san interview

8/12/2019 SAN Interview

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1. A “Logical Volume Manager” helps ina. Virtualizing storage.b. provide direct access to the underlying storage.c. Manage disk space efficiently ithout having to kno the actual hardare details.d. !oth a " c

e. #one of the aboveVie Anser

Anser$d

%. &hysical Volumes area. 'he space on a physical storage that represent a logical volume.b. (isk or disk partitions used to construct logical volumes.c. A bunch of disks put together that can be made into a logical volume.d. #one of the aboveVie Anser

Anser$b

). *hich of the folloing are true. Logical Volumesa. +an span across multiple volume groups.b. +an span across multiple physical volumes.c. +an be constructed only using a single physical disk.d. #one of the aboveVie Anser

Anser$b

,. A logical -tent/L-0 and &hysical etent/&-0 are related as follosa. &- resides on a disk hereas L- resides on a logical volumeb. L- is larger in size than a &-c. L-2s are uni3ue hereas &-2s are notd. -very L- maps to a one and only one &-Vie Anser

Anser$ad

4. *hich of the folloing statements are truea. LVM is storage independent hereas a 5A6( system is limited to the storage subsystem

b. LVM provides snapshot featurec. *ith LVM e can gro volumes to any sized. 5A6( system can provide more storage space than a LVMVie Anser

Anser$a b c

7. LVM is independent of device 6(s because



a. LVM uses it2s on device naming to identify a physical diskb. LVM stores the volume management information on the disks that helps it reconstruct volumesc. LVM is an abstraction layer over physical devices and does not need device idsd. (evice ids are used only by the device driversVie Anser

Anser$b

8. +oncatenation is the techni3ue ofa. Adding physical volumes together to make a volume groupb. 9illing up a physical volume completely before riting to the net one in a logical volumec. riting a block of data onto one disk and then a block onto another disk in an alternate fashiond. 6ncreasing the size of a volume by adding more disksVie Anser

Anser$b

:. *hich of the folloing is not a feature of LVMa. 6ndependent of disk locationb. +oncatenation and striping of storage systemsc. protection against disk failuresd. snapshot capabilityVie Anser

Anser$c

;. LVM does not incur much performance overheads becausea. 'he rites<reads happen only to logical devices

b. 'he mapping of logical to physical storage is kept in 5AMc. 'he time lost in mapping devices is gained by riting to disks in paralleld. #one of the aboveVie Anser

Anser$b

1=. V>(A representsa. 'he data stored on the logical volumeb. 'he data stored on physical volumec. LVM configuration data stored on each physical volume

d. #one of the aboveVie Anser

Anser$c



1. *hich of the belo is component of ?A#a. -thernet sitchb. 9ibre ?itchc. -thernet +ardd. #one of the aboveVie Anser

Anser$b

%. *hat components on ?A# can be virtualizeda. (iskb. 'ape (rivec. 'ape Libraryd. All the aboveVie Anser

Anser$d

). +@@? is a terminology related toa. Logical (isksb. &hysical (iskc. &hysical Volumed. #one of the above

Vie Anser

Anser$b

,. *hich device implements 'ape@Bver@'ape Virtualizationa. 9alconstor V'Lb. V?M Bpenc. ?#7===d. #one of the aboveVie Anser

Anser$c

4. *hat emulates the ?csi Media +hanger command setCa. V'Lb. V'c. &hysical (iskd. &hysical VolumeVie Anser



Anser$a

7. *hat is one significant advantage of Virtualization in datacentersa. +an manage the (ata center ith Dero Manpoerb. Mirroring for (isaster 5ecovery

c. -liminate the need of physical devices for the (ata centerd. #one of the aboveVie Anser

Anser$b

8. &oerpath is the M&6B softare ofa. Microsoftb. Veritasc. -M+d. #one of the above

Vie AnserAnser$c

:. *hich is the correct statementa. Virtualization cloud presents itself as host to the hostb. Virtualization cloud presents itself as targets to the hostc. #one of A or !d. !oth A and !Vie Anser

Anser$b

;. (ecoupling the ost and real targets in a datacenter is a bliss becausea. Allos dynamic configuration of targets ithout host knoing about it.b. Allos dynamic of configuration of hosts ithout targets knoing about it.c. !oth the aboved. #one of A or !Vie Anser

Anser$a

1=. A ?A# netork can have

a. 1 9+ sitchb. % 9+ sitchc. 'here can be many 9+ sitchesd. #o 9+ sitchVie Anser

Anser$c



1. *hich of the folloing company manufactures 5aid arraysa. yundaib. ondac. itachi

d. MitsubishiVie Anser

Anser$c

%. An 9+ Eammer@analyzer can be used toa. +apture all 9+ framesb. 'amper 9+ packetsc. 6<B performanced. All the aboveVie Anser

Anser$d

). #etork level virtualization in a ?A# fabric can be implemented by having virtualization enginerunning ina. !Ab. 9+ sitchc. 5aid arrayd. Any of the aboveVie Anser

Anser$b

,. V'L emulatesa. Library and 'ape driveb. Library and (isk driverc. Virtual 'ape onlyd. Any of the aboveVie Anser

Anser$a

4. *hich of the folloing company manufacture ?an 9abric sitches

a. -muleb. +iscoc. F#6d. All the aboveVie Anser

Anser$b



1. An “6node” representsa. !ufferb. (atac. 9iles " (irectories


Anser$c

%. Fournaling is preferred fora. 9aster file system recoveryb. 9aster rite operationc. ?toring logsd. ?toring metadataVie Anser

Anser$a

). -amples of Fournaling filesystema. -t%b. -t)c. G9?d. F9?Vie Anser

Anser$b

,. ard links " soft links are samea. '5G-b. 9AL?-Vie Anser

Anser$b

4. A+L stands fora. A++-?? control listb. A++-?? check listc. Audit control list

d. Audit check listVie Anser

Anser$a

7. V9?a. ?tandalone filesystemb. ?upport multiple filesystem type



c. #etork filesystemd. #one of the aboveVie Anser

Anser$b

8. !uffer cache helps toa. ?tore datab. 6mproved read<rite performancec. Allocate memoryd. #one of the aboveVie Anser

Anser$b

:. *ear leveling affectsa. ard disk

b. 9lashc. Bptical storaged. 5AMVie Anser

Anser$b

;. (eframentation is the process ofa. physically reorganizing the contents of the disk to store the pieces of each file close together andcontiguously.b. +reate etra space in filesystem

c. 5esizing the filesystem.d. #one of the above.Vie Anser

Anser$a

1=. 'he ?uperblock is re3uired fora. (escription of the basic size and shape of this file system.b. 'his is the inode number of the first inode in the file system.c. 'he number of free blocks in the file systemd. All of the above

Vie AnserAnser$d

1. 9ileystem is created using commanda. Mkfsb. 9ormatc. 9sck



d. defragVie Anser

Anser$a

%. &seudo filesystem /<procfs0a. Access kernel information about processesb. ?toring mount pointsc. ?toring filesystem pathd. All of the aboveVie Anser

Anser$a

). -very 9ile or directory has uni3uea. 6nodeb. (irectory

c. &athnamed. 6node " pathnameVie Anser

Anser$d

,. 6node bitmaps used fora. inode allocation and deallocationb. block allocationc. data blocksd. All of the above

Vie Anser

Anser$a

4. (irty buffer cache containsa. 6nvalid datab. #e valid datac. 9iled. 6nodeVie Anser

Anser$b

'his set of multiple choice ?A# storage 3uestions and ansers focuses on ?+?6 standards.

1. *hat is ?+?6Ca. ?mall +omputer ?imple 6nterfaceb. ?ystem +omputer ?elect 6nterface



c. ?mall +omputer ?ystem 6nterfaced. ?mall +omputer ?ystem 6nterconnectVie Anser

Anser$c

%. #eus is a relation beteena. 6nitiator and 'argetb. 6nitiator 'arget and Logical Gnitc. 6nitiator 'arget Logical Gnit and 'askd. Any of the aboveVie Anser

Anser$d

). 'ask can constitutea. Bne command only

b. Bne or more commandsc. A single command or group of linked commandsd. Linked +ommands BnlyVie Anser

Anser$c

,. 'ask managera. Manages the devicesb. Manages tasksc. !oth a " b


Anser$b

4. Gntagged task is represented bya. 6H' neusb. 6H'HL neusc. 6H'HLHI neusd. #one of the aboveVie Anser

Anser$b

7. *hich is not the main phase of 6<BCa. (atab. +ommandc. ?tatusd. +ontrol



Vie Anser

Anser$d

8. *hich of the folloing is falseCa. +(! has a operation codeb. +(! has a control bytec. !oth a " bd. #one of the aboveVie Anser

Anser$d

:. *hat is incorrect about +ommand (escriptor blockCa. 6t has ?+?6 commandb. as fied length of 7 1= 1% or 17 bytesc. 'arget fetches +(! from initiator

d. 'he +(! is sent during (ata &haseVie Anser

Anser$d

;. *hat is a Logical GnitCa. subset of 'arget deviceb. subset of 6nitiatorc. ?ubset of (evice ?erverd. +omponent of 6nterfaceVie Anser

Anser$a

1=. *hich of them is not a valid ?+?6 commandCa. !us 5esetb. 6n3uiryc. Mode ?ensed. 5eadH1=Vie Anser

Anser$a

'his set of ?A# 3uestions and ansers helps anyone preparing for +isco ?torage certification eams.Bne should practice our complete set of 3uestions and ansers continously for %@) months for throughunderstanding of ?A# 9undamentals and various eams and intervies.

1. +ontrol byte isa. the first byte in a +(!b. the second byte in +(!



c. the last byted. not part of +(!Vie Anser

Anser$c

%. Length of Logical Gnit number isa. : bitb. 17 bitc. )% bitd. 7, bitVie Anser

Anser$d

). *hich of the folloing statement is<are trueCa. ?+?6 supports only one type of device

b. ?+?6 supports multiple types of devicec. Large number of devices can be connected in ?+?6d. 6(- is more intelligent than ?+?6Vie Anser

Anser$b c

,. ?+?6 (omain should have$a. At least one deviceb. At least to devicesc. a service delivery subsystem


Anser$b c

4. *hich of the folloing is falseCa. All storage devices talk using ?+?6 commands and responsesb. ?+?6 is manufacturer independentc. ?+?6 command is independent of underlying transports like i?+?6 9+& etc.d. #one of the aboveVie Anser

Anser$d

'his set of multiple choice ?A# storage 3uestions and ansers focuses on ?A'A protocol standards.

1. ?A'A initially came as a evolution<improvement overa. 6(-b. 9iber +hannel



c. ?A?d. ?+?6Vie Anser

Anser$a

%. *hat is the !G? architecture used by ?A'ACa. &arallelb. ?erialc. (epends on the chipset usedd. #one of the aboveVie Anser

Anser$b

). Maimum number of ?A'A devices that can be connected through ?A'A isa. 1

b. 4c. :d. 14Vie Anser

Anser$d

,. *hat is the maimum distance that you can connect through a ?A'ACa. 1 meterb. 1 kilometersc. 1== kilometers2 ith repeaters.

d. 4 meters.Vie Anser

Anser$a

4. *hat are the advantages of ?A'A over A'ACa. igher speeds.b. Lesser compleity ith respect to poer and cabling re3uirements.c. ot ?apping.d. !etter -nclosure managemente. All of the above

Vie AnserAnser$e

7. *hat is the maimum number of commands that you can 3ueue hen you use #ative +ommandIueuing.a. )%b. 17



c. :d. ,Vie Anser

Anser$a

8. #+I gives best improvement in performance hen the access from the host isa. ?e3uentialb. 5andomc. !oth ?e3uential and 5andomVie Anser

Anser$a

:. *ith &ort Multiplier you can increase the number of devices toa. %b. ,

c. :d. 14Vie Anser

Anser$d

;. 6n +ommand !ased sitching hich of the folloing is not truea. ost can issue only one command to one drive at a time.b. 6s ideal hen epansion of capacity is more important than drive performance.c. 'he host issues and completes commands to the drives simultaneously.d. Might not take advantage of the complete speed of the link.

Vie Anser

Anser$c

'his set of multiple choice ?A# storage 3uestions and ansers focuses on ?torage Managementaspects.

1. A ?ubprofile can reference other subprofilesa. 'rueb. 9alse

Vie AnserAnser$a

%. +lients use hich protocol to discover ?M6 Agents on ?torage Area #etorkCa. ?L& /?ervice Location &rotocol0b. A>&/Agent (iscovery &rotocol0c. ?M6& /?M6 &rotocol0



Vie Anser

Anser$a

). -ncoding mechanism of +6M (ata as JML -lements Ca. +6M@JMLb. ml+6Mc. ?>MLVie Anser

Anser$b

,. +an a vendor implement additional +lasses or support additional &roperties than are defined in a&rofile and still be considered conformantCa. 'rueb. 9alseVie Anser

Anser$a

4. +6M and *!-M has been defined by Ca. (M'9b. ?M6 ?tandards Brganizationc. Bpen ?tandards !odyVie Anser

Anser$a

7. HHHHHHHHH instruments one or more aspects of the +6M ?chemaa. (istributorb. &roviderc. ManagerVie Anser

Anser$b

8. 'he server can operate directly on the underlying system by calling the system2s commandsservices and library functions.a. 'rue

b. 9alseVie Anser

Anser$a

:. 'ransport protocol used for JML+6M isa. G(&b. ''&



c. ?#M&Vie Anser

Anser$b

;. A single +6M based management application can manage storage arrays from multiple vendors.a. 'rueb. 9alseVie Anser

Anser$a

1=. +ollects responses from providers and returns to the clienta. ml+6Mb. +6MBMc. (M'9Vie Anser

Anser$b

'his set of 3uestions and ansers helps anyone preparing for & " itachi ?A# ?torage certificationeams and<or ?M6@?. Bne should practice our complete set of 3uestions and ansers continuously for%@) months for through understanding of ?A# 9undamentals and various eams and intervies.

1. 'o sho +6M elements in diagram form the ?M6@? 1.1.= uses a variation of hich standardspecification from BM>a. JML?6Mb. GML

c. F&->Vie Anser

Anser$b

%. A ?ubprofile defines additional +6M elements that a vendor may choose to implement in order toenhance a &rofile.a. 'rueb. 9alseVie Anser

Anser$a

). &ackages K these are similar to sub@profiles but optional for a parent profilea. 'rueb. 9alseVie Anser

Anser$b



,. +6MBM and &roviders are hosted on +6M +lienta. 'rueb. 9alseVie Anser

Anser$b

4. +6M +lient can only Monitor but cannot control remote resourcesa. 'rueb. 9alseVie Anser

Anser$b

'his set of multiple choice 3uestions and ansers on ?torage Area #etork focuses on ?torageManagement aspects. Bne should practice our complete set of 3uestions and ansers continously for %@

) months for through understanding of ?A# 9undamentals and various eams and intervies.

1. ?torage management comprises ofa. ?A# Managementb. (ata protectionc. (isk operationd. All of the aboveVie Anser

Anser$d

%. 6dentify the storage devicesa. ?itchb. 5A6( Arraysc. 'ape drivesd. All of the aboveVie Anser

Anser$d

). *hich protocols are used for ?torage managementa. ?#M&

b. L(A&c. &B&)d. All of the aboveVie Anser

Anser$a

,. 6dentify the difficulties the ?A# administrator incur hile dealing ith diverse vendors



a. &roprietary management interfaces.b. Multiple applications to manage storage in the data center.c. #o single vie.d. All of the aboveVie Anser

Anser$d

4. o do ?torage administrators ensure secure access to storage devices$a. !y using Doningb. !y putting a physical lock on the storage devicec. !y keeping devices shutdon hen not in used. All of the aboveVie Anser

Anser$a

7. -ffective ?torage management includesa. ?ecuritiesb. !ackupsc. 5eportingd. All of the aboveVie Anser

Anser$d

8. 6dentify the tasks involved in ?torage +apacity managementa. 6dentifying storage systems are approaching full capacity.

b. Monitoring trends for each resourcec. 'racking 'otal capacity total used total availabled. All of the aboveVie Anser

Anser$d

:. 6dentify the tasks involved in ?torage &erformance Management.a. ave performance thresholds been eceeded for the storage systemsCb. 6s above causing 6' to not meet its service level obEectivesc. -ach ?erver and logical disks in each server processor utilization

d. All of the aboveVie Anser

Anser$d

;. -ffect of open standards like ?M6/s0a. ?tandardization drives softare interoperability and interchange ability.b. !reaks the old@style dependence on proprietary methods trade secrets and single providers.



c. !uilds a strong foundation on hich others can 3uickly build and innovate.d. All of the aboveVie Anser

Anser$d

1=. 'ask of (istributed Management 'ask 9orce is toa. 'o promote interoperability among the management solution providers.b. Acts as an interface beteen the various budding technologies and provide solution to managevarious environmentsc. Bnly /a0d. !oth /a0 and /b0Vie Anser

Anser$d

11. ?M6@? ?tandard uses

a. Fava 5M6b. +6M@JML<''&c. +B5!Ad. .#-'Vie Anser

Anser$b

'his set of multiple choice 3uestions and ansers focuses on ?A# (ata +enter.

1. 'his is a repository for the storage management and dissemination of data in hich the mechanicallighting electrical and computer systems are designed for maimum energy efficiency and minimumenvironmental impact.a. ?torage labb. (ata +enterc. (ata arehoused. 9abricVie Anser

Anser$b

%. 'his is the process of assigning storage usually in the form of server disk drive space in order tooptimize the performance of a storage area netork.a. ?torage &rovisioningb. (ata miningc. ?torage assignmentd. (ata *arehousingVie Anser

Anser$a



). ?imply stated these are large boes that hold lots of hard disks.a. ostb. 'ape libraryc. ?itchd. (isk Array

Vie AnserAnser$d

,. 'his consists of the precautions taken so that the effects of a disaster ill be minimized.a. (ata retrievalb. (isaster recoveryc. Archived. 5eplicationVie Anser

Anser$b

4. 'his is the practice of collecting computer files that have been packaged together for backup totransport to some other location for saving aay from the computer so that more hard disks can bemade available or for some other purpose.a. !ackupb. Archivec. Migrationd. +ompressionVie Anser

Anser$b

'his set of ?A# multiple choice 3uestions and ansers focuses on (ata Management Areas.

1. 'his is a ay of storing the data in different places on same<different storage. !y doing so 6<Boperations can overlap in a balanced ay improving performance and providing fault tolerancea. 5A6(b. 5A6'c. #one of the aboved. !oth /a0 " /b0Vie Anser

Anser$d

%. 'his is a method of reducing storage needs by eliminating redundant dataa. (ata snapshotb. (ata (e@duplicationc. (ata compressiond. (ata encryptionVie Anser



Anser$b

). 'his is the pooling of physical storage from multiple netork storage devices into hat appears to bea single storage device that is managed from a central console.a. ?erver &rovisioning

b. (ata miningc. (isk<'ape virtualizationd. #one of the aboveVie Anser

Anser$c

,. 'his is the assignment of different categories of data to different types of storage media in order toreduce total storage cost. +ategories may be based on levels of protection needed performancere3uirements fre3uency of use and other considerations.a. (ata mining

b. 'iered storagec. (ata protectiond. Meta@(ata managementVie Anser

Anser$b

4. 'his is the activity of copying files or databases so that they ill be preserved in case of e3uipmentfailure or other catastrophe.a. ?napshotb. 5eplication

c. Archivald. !ackupVie Anser

Anser$d

7. 'his technology provides the benefits of disk storage in a system that emulates a tape library toeisting backup softare.a. (ata compressionb. V'Lc. -'Ld. #one of the aboveVie Anser

Anser$b

8. 'his is a feature of storage security that is gaining favor among enterprises that use storage areanetorks /?A#s0.a. (ata &rotectionb. (ata de@duplication



c. ?torage encryptiond. (ata compressionVie Anser

Anser$c

:. *ithout this practice backing up data is virtually useless.a. (ata Archivalb. (ata 5etrievalc. (ata 3uality assuranced. (ata 5ecoveryVie Anser

Anser$b

;. 'his ensures proper adherence to government regulations regarding the integrity accessibility andretention of important data.

a. 6&AAb. (ata encryptionc. (ata complianced. ?BJVie Anser

Anser$c

1=. 'here are endless rules and regulations in this area of storage technology.a. (ata &rotectionb. (ata ?torage Management

c. (atabase managementd. Meta data managementVie Anser

Anser$b

'his set of ?A# multiple choice 3uestions and ansers focuses on !ackup and 5ecovery.

1. 'he purpose of backup is$a. 'o restore a computer to an operational state folloing a disaster

b. 'o restore small numbers of files after they have been accidentally deletedc. 6s to free space in the primary storaged. #one of the aboveVie Anser

Anser$a b

%. !ackup of the source data can be created



a. Bn the same deviceb. Bn another devicec. At some other locationd. All the aboveVie Anser

Anser$d

). *hich of the folloing backup techni3ue is most space efficientCa. 9ull backupb. 6ncremental backupc. (ifferential backupVie Anser

Anser$b

,. *hich of the folloing statements are trueC

a. (ata can be recovered fastest in online backupb. 'ape library is an eample of nearline storagec. (ata recovery can take hours for offline backupd. All the aboveVie Anser

Anser$d

4. *hich of the folloing 3ualifies as best (5 /(isaster 5ecovery0 siteCa. (5 site in the same campusb. (5 site in the same city

c. (5 site in the same countryd. (5 site in a different countryVie Anser

Anser$d

7. *hich of the folloing techni3ues can be used for optimizing backed up data spaceCa0 -ncryptionb0 +ompressionc0 Authenticationd0 (eduplication

Vie AnserAnser$b d

8. 'o decide on a backup strategy for your organization hich of the folloing should you considerCa. 5&B /5ecovery &oint BbEective0b. 5'B /5ecovery 'ime BbEective0c. !oth 5&B " 5'B




Anser$c

:. *hich of the folloing can be used for reducing recovery timeCa. Automatic failoverb. !y taking backup on a faster devicec. 'aking multiple backups K one in same location another at different locationd. All the aboveVie Anser

Anser$d

;. *hich of the folloing is falseCa. 'he more important the data the greater the need for backing it upb. A backup is as useful as its associated restore strategy

c. ?toring the backup copy near to its original site is best strategyd. Automated backup and scheduling is preferred over manual operationsVie Anser

Anser$c

1=. *hich of the folloing is !ackup softareCa. Amandab. !aculac. 6!M 'ivoli ?torage Managerd. All the above

Vie Anser

Anser$d

'his set of ?A# multiple choice 3uestions and ansers focuses on ?napshot 'echnology.

1. *hich of the folloing statement is falseCa. 6n synchronous mirroring rite acknoledgement is sent once both the mirrors are rittenb. 6n synchronous mirroring rite response time can be slo as it depends on the sloest disk of themirror

c. *rite response to an application is faster for asynchronous mirroring as compared to synchronousmirroringd. #one of the aboveVie Anser

Anser$d

%. *hich of the folloing statement is false for snapshotsC



a. ?napshot techni3ue can use copy@on@rite mechanismb. Gses point@in@time to ensure data integrityc. ?napshot copy must be on a different deviced. #one of the aboveVie Anser

Anser$c

). *hich of the folloing is true for +(& K +ontinuous (ata &rotectionCa. 6t backs up every change to the datab. +an restore to any time in the pastc. !oth the aboved. #one of the aboveVie Anser

Anser$b

,. *hich of the folloing is false for (%(%' K (isk to (isk to 'ape backupCa. !ackup and 5estore is fasterb. 'ape is used for archiving and<or long term storagec. +heaper disks are generally used for backup deviced. #one of the aboveVie Anser

Anser$d

4. *hich of the folloing is false for #(M& protocolCa. #(M& uses '+&<6&

b. #(M& allos selective file recoveryc. #(M& allos asynchronous event notificationd. #one of the aboveVie Anser

Anser$d

7. 'he serverless backup technology mainly depends ona. +opy commandb. -tended copy commandc. 5ead<rite command

Vie AnserAnser$b

8. ?napshot provides a mechanism to take backup ofa. ?tatic datab. (eleted datac. (ynamic data



Vie Anser

Anser$c

:. ?napshot provides information ona. 'he latest data on the volumeb. 'he old data on the volumec. 'he data present on the volume at specified timeVie Anser

Anser$c

;. 'he +(& is mainly based ona. J+B& commandb. (ata mirroringc. ?napshot mechanismVie Anser

Anser$c

1=. *hich snapshot techni3ue is space efficientCa. ?plit@Mirrorb. +opy@on@*riteVie Anser

Anser$b

'his set of ?A# multiple choice 3uestions and ansers focuses on (ata &rotection 'echni3ues.

1. (ata protection is re3uired to recover froma. (isk<?ystem failuresb. ?oftare corruption through virusc. uman errorsd. All the aboveVie Anser

Anser$d

%. 'he challenges for data protection are

a. 'aking care of the old datab. !acking up the dynamic datac. All the aboveVie Anser

Anser$b

). #ame the mechanism hich provides the highest level of data protection



a. 5A6( =b. 5A6( 1c. 5A6( 7Vie Anser

Anser$c

,. *hich statements are true .r.t ?MA5' disksa. (etect and correct the errors that occur because of failureb. Monitors the disk at regular intervalsc. &rovides information on the disk failures in advanced. a and be. b and cVie Anser

Anser$e

4. 'he draback of data mirroring isa. !acking up the datab. &erformance degradationc. (ifficulty involved in configuring the mirrored volumeVie Anser

Anser$b

7. *ith reference to Volume Manager is the folloing statement '5G- or 9AL?- under specificconfigurationC@ Volume manager provides protection against multiple disk failures

a. 'rueb. 9alseVie Anser

Anser$a

8. *hich are all the statements valid statements .r.t volume managera. Achieve protection against single<multiple disk failuresb. ?ustain system<node failurec. >et better performance compared to using individual diskd. All the above

Vie AnserAnser$d

:. &oint out the false statement. Volume cana. ?pan across different partitions<disksb. ?pan across different disk arraysc. !e created on tape device



d. !e a shared volumeVie Anser

Anser$c

;. 6dentify the correct statements .r.t. Fournal 9ile ?ystem /F9?0a. F9? keeps pointers to all the stale datab. *hile recovering data on a system F9? helps in 3uicker recoveryc. All the aboveVie Anser

Anser$b

1=. 6n a clustered volume manager scenario identify the incorrect statementa. All the nodes in the system ill have access to shared volumesb. Bnly a set of nodes ill have access to shared volumesc. All the nodes ill be alloed to rite data to the shared volume

Vie Anser

Anser$b

'his set of ?A# multiple choice 3uestions and ansers focuses on igh Availability Areas.

1. !athtub +urve is used to represent the reliability characteristics of hardare components. *hy isthis not applicable to softare modulesCa. ?oftare failures tends to stabilize and do not increase ith respect to time.b. ?oftare failures cannot be predicted.c. ardare components do not fail for a long time

d. ?oftare fails more compared to hardareVie Anser

Anser$a

%. *hich one of the belo is measured by M'!9Ca. 'oleranceb. Life timec. 5eliabilityd. IualityVie Anser

Anser$c

). 6n designing a fault@tolerant system hich one of the methods is appropriateCa. 9ail ?afeb. 9ail 9astc. Multi@9aild. 9ail 5are



Vie Anser

Anser$b

,. A system has M'!9 of 1===== hours and M''5 of )= minutes. *hat is the average don time ofthe system in one yearCa. %.7 minutesb. 1.: minutesc. 1: minutesd. )= minutesVie Anser

Anser$a

4. *hat is the most common redundancy configuration for ACa. #1b. #M

c. %#d. 4#Vie Anser

Anser$a

7. Bne of the common problems seen in a cluster configuration has a name hich contains the mostcomple part of human body.a. ?plit@brainb. +lusterc. Multi@!rain

d. eart !eatVie Anser

Anser$a

8. *hich one of the folloing is a cluster based on shared nothing modelCa. M?++ #',b. #etare +?c. Gniare 8d. Linu@AVie Anser

:. 'he M'!9 of system should be high for fault tolerant systems itha. ?ingle &oint 9ailureb. Multi &oint 'olerantc. ?ingle &oint 'olerantd. Multi@'olerantVie Anser

Anser$a



;. *hich one of the folloing is #B' a ?ingle ?ystem 6mage +lustering ?olutionCa. Bpen VM?b. &@'ru+lusterc. Bpen??6d. #ovel#etare

Vie AnserAnser$d

1=. *hich one is a common softare fault tolerant model for safety critical Eobs such as flight controlsoftareCa. Active@Active config.b. Active@!ackup configc. #@Version &rogrammingd. 9ailoverVie Anser

Anser$c

'his set of ?A# multiple choice 3uestions and ansers focuses on 9ault 'olerance Areas.

1. *hich is the most common cause of soft errors in hardareCa. 'hermal 6ssueb. +osmic 5aysc. Alpha &articiled. Voltage 9luctuationVie Anser

Anser$b

%. 6f J is the M'!9 of a system and is the failure rate of the system then hich one is trueCa. J N O 1b. J O c. #J O here # is the life timed. J< O # here # is the life timeVie Anser

Anser$a

). *hich one of the property is #B' a re3uirement for 9ault 'oleranceCa. 9ault +ontainmentsb. 9ault 6solationc. (ynamic 5ecoveryd. 9ail ?afeVie Anser

Anser$d



,. *hich of the operating system architecture is suitable for 9' based systemsCa. A K Monolithic Pernelb. ! K Micro Pernelc. + K 5eal 'ime Perneld. ( K All of the Above

Vie AnserAnser$b

4. 'he common mechanism used to find latent failure in memory modules$a. ?niffingb. ?crubbingc. ?appingd. &agingVie Anser

Anser$a

7. *hich one of the availability criteria is optimal for carrier grade class systemsCa. ,= seconds of don time per yearb. ,= minutes of don time per yearc. 1= minutes of don time per yeard. 1= seconds of don time per yearVie Anser

8. M''5 is the best ay to characterizea. Availabilityb. 5eliability

c. 9ault 'oleranced. (ependabilityVie Anser

Anser$a

'his set of ?A# 3uestions and ansers helps anyone preparing for -M+ 6?M ?torage certificationeams. Bne should practice our complete set of 3uestions and ansers continously for %@) months forthrough understanding of ?A# 9undamentals and various eams and intervies.

1. *hich of the folloing suffers from rite hole problemCa. 5A6( =b. 5A6( 1c. 5A6( 4d. 5A6(DVie Anser

Anser$c

%. 6f read and rite performance is the only criterion hich ould you chooseC



a. 5A6( =b. 5A6( 1c. 5A6( 4d. 5A6( 4=e. F!B(

Vie AnserAnser$a

). *hich one of the folloing is an invalid 5A6( levelCa. 5aid 1=b. 5aid 4=c. 5aid 4)d. 5aid :=Vie Anser

Anser$d

,. *hich of the folloing 5A6( levels guarantees double disk failure protectionCa. 5aid 4b. 5aid 7c. 5aid =1d. 5aid 1=Vie Anser

Anser$b c d

4. *hich of the folloing 5A6( levels are nestedC

a. 5aid 4e. 5aid 7b. 5aid 1=c. 5aid 4=Vie Anser

Anser$b c

7. *hat is the name of raid module in a linu kernelCa. lvmb. raidsoft

c. mdd. none of the aboveVie Anser

Anser$c

8. *hat is the minimum number of disks needed for 5aid level 4Ca. %



b. )c. ,d. 4Vie Anser

Anser$b

:. *hen one disk fails in a 5A6( 4 array ith a hot spare hich one of the folloing statements istrueCa. #o 6B can continueb. 5eads continue from hot spare but rites failc. !oth reads and rites can continued. Array must be shut don immediately for replacing the failed diskVie Anser

Anser$c

;. *hen one disk fails in a 5A6( 4 array ithout a hot spare hich one of the folloing statements istrue$a. #o 6B can continueb. 5eads continue from hot spare but rites failc. !oth reads and rites can continued. Array must be shut don immediately for replacing the failed diskVie Anser

Anser$c

'his set of multiple choice ?A# storage 3uestions and ansers focuses on 5A6( technology and

various levels of 5A6(.

1. *hich to are advantages of hardare 5A6( controllersCa. Volume management is performed by the serverb. Volume management is performed by controller cardc. (edicated cache memory increases server rite performanced. &arity calculation by the server and cache memory in the 5A6( controller increases read and riteperformanceVie Anser

Anser$b c

%. *hich to 5A6( types use parity for data protectionCa. 5A6( 1b. 5A6( ,c. 5A6( 1 =d. 5A6( 4Vie Anser

Anser$b d



). *hich one of these is characteristic of 5A6( 4Ca. (istributed parityb. #o &arityc. All parity in a single diskd. (ouble &arity

Vie AnserAnser$a

,. *hat is the uni3ue characteristic of 5A6( 7 /+hoose one0Ca. (istributed &arityb. ?tripingc. 'o independent distributed parityd. MirroringVie Anser

Anser$c

4. *hich of the folloing combinations can support 5A6( =4Ca. % sets ith ) disks eachb. ) sets ith % disks eachc. , sets ith ) disks eachd. , sets ith 1 disk eachVie Anser

Anser$b c

7. *hat is the minimum number of disks re3uired for 5A6(1C

a. 1b. %c. ,d. 4Vie Anser

Anser$b

8. *hich of the folloing raid levels provides maimum usable disk spaceCa. 5A6( 1b. 5A6( =

c. 5A6( 4d. 5A6( 7Vie Anser

Anser$b

:. +an you help decide on the 5A6( level to use K e are a media house and e use lot ofgraphics<video applications K e need large throughputs for videos to get played ithout any Eitter and



since e are in publishing business e can2t afford dontimes.-ven if there is any dontime e ould like our data to be 3uickly reconstructed and enable us tocontinue ith out ork in less timea. 5aid 4b. 5aid 1=

c. 5aid 7d. 5aid =1e. 5aid =Vie Anser

Anser$b

;. 'he mean time to failure of a single disk is %===== hrs. 6f an array of disks is using 4 such disks themttf of the array isa. %===== hrsb. ,==== hrsc. 1====== hrsd. +an not be determinedVie Anser

Anser$b

1=. An array of disks is more likely to fail compared to a single disk. o is it that 5A6( arrays stillmanage to provide more data protection compared to a single diskCa. Gsing either mirroring or stripingb. Gsing either mirroring or parityc. Gsing better 3uality disksd. Gsing dedicated hardare

Vie Anser

Anser$b

'his set of ?A# 3uestions and ansers helps anyone preparing for #etapp (ata B#'A& ?toragecertification eams. Bne should practice our complete set of 3uestions and ansers continously for %@)months for through understanding of ?A# 9undamentals and various eams and intervies.

1. *hich of the folloing is false regarding multiple pathsCa. Load balancing can be doneb. igher throughput can be achieved

c. &ath 9ailover can be doned. #one of the aboveVie Anser

Anser$d

%. *hich of the folloing is invalid error recovery levelCa. ?ession level recovery



b. ?+?6 level recoveryc. +onnection level recoveryd. (igest failure recoveryVie Anser

Anser$b

). *hich of the folloing statement is trueCa. i?+?6 can be implemented in softareb. i?+?6 can be implemented in hardarec. ?ystem can boot from i?+?6 disk over netorkd. All the aboveVie Anser

Anser$d

,. *hich of the folloing statement is falseC

a. i?+?6 is limited to local LA#b. i?+?6 can run both on 1>! and 1=>! netorksc. i?+?6 re3uires 9ibre +hannel !A on the hostd. i?+?6 re3uires netork card on the hostVie Anser

Anser$a c

4. *hich of the folloing companies have i?+?6 productsCa. -3uallogicb. Ilogic

c. -M+d. All the aboveVie Anser

Anser$d

'his set of multiple choice ?A# storage 3uestions and ansers focuses on i?+?6 protocol.

1. i?+?6 is mapping ofa. ?+?6 over '+&<6&b. 6& over ?+?6

c. 9+ over 6&d. #one of the aboveVie Anser

Anser$a

%. i?+?6 allos hat type of accessa. block level



b. file levelc. !oth a " bd. none of the aboveVie Anser

Anser$a

). i?+?6 names are$a. >lobally uni3ueb. Local to the setupc. permanentd. temporaryVie Anser

Anser$a c

,.*hich of the folloing is not true of i?+?6 namesC

a. i?+?6 names are associated ith i?+?6 nodes/targets and initiators.b. i?+?6 names are associated ith n< adapter cardsc. i?+?6 names are orld ide uni3ue.d. i?+?6 names are permanant.Vie Anser

Anser$b

4. *hich of the folloing is not a valid i?+?6 nameCa. i3n.%==1@=,.com.mystorage$storage.tape1b. i3n.%==1@=,.com.mystorage

c. i3n.=1@=,.com.eample.diskd. none of the above.Vie Anser

Anser$c

7. *hich of the folloing is not a valid i?+?6 nameC a. eui.1%),=;:87;8:4),1b. eui.,%)8=;:87;8:4),1c. eui.1%),=;:87;8:4),%%.diskd. none of the aboveVie Anser

Anser$c

8. (iscovery session in i?+?6 is used for$a. (iscovering i?+?6 targets and their 'argetAddresses.b. &robing Luns on i?+?6 targets.c. either of aboved. #one of the above.



Vie Anser

Anser$a

:. *hich of the folloing are valid ?end'argets commandsCa. ?end'argetsOi3n.%==1@=,.com.mystorage$storage.tape1b. ?end'argetsOallc. !oth a. and b.d. #one of the aboveVie Anser

Anser$c

;. i?+?6 targets can be discovered bya. ?end'argetsb. ?tatic configurationc. using ?L&<i?#?

d. All of the aboveVie Anser

Anser$d

1=. *hich of the folloing is falseCa. i?+?6 re3uires login from initiator to targetb. there can be multiple paths beteen initiator and targetc. (ata integrity is ensured using digestsd. #one of the aboveVie Anser

Anser$d

'his set of 3uestions and ansers helps anyone preparing for !rocade ?A# ?torage certificationeams. Bne should practice our complete set of 3uestions and ansers continously for %@) months forthrough understanding of ?A# 9undamentals.

1. *hich of the folloing protocol can have maimum device connectedCa. ?A'Ab. ?A?

c. 9+@ALd. A'AVie Anser

Anser$b

%. ?A? port identifier is$a. : bit



a. ?A? is compatible ith ?A'A physical layerb. ?A? is not parallel ?+?6c. ?A? has multiple channels per portd. All the aboveVie Anser

Anser$d

). ?A? (omain can have$a. 17%47 devices in a single domainb. 1%: epanders per domainc. 1%: phys per epanderd. All the aboveVie Anser

Anser$d

,. *hich of the folloing is falseCa. ?A? and ?A'A devices can2t be connected in the same systemb. ?A? is a point to point protocolc. -panders are used to connect to multiple devicesd. #one of the aboveVie Anser

Anser$a

4. *hich of the folloing is falseCa. ?A? devices can have narro ports and<or ide ports

b. -pander port is a type of ?A? portc. -ach ?A? port has a ?A? addressd. #one of the aboveVie Anser

Anser$b

7. *hich of the folloing is falseCa. ?A? disk device ith to phys can be a ide portb. -pander device is not a ?A? devicec. !A having multiple ports can be configured to have ide and narro ports


Anser$a

8. *hich of the folloing is true for -pander deviceCa. -pander device has a ?A? addressb. as epander ports



c. May contain ?A? deviced. All the aboveVie Anser

Anser$d

:. *hich of the folloing is falseCa. -pander device has optional ?M& initiator portb. -pander device has optional ?M& target port

c. -pander port can connect to ?A? target deviced. -pander port can connect to another epander deviceVie Anser

Anser$b

;. *hich of the folloing layer is present in a ?A? portC

a. 'ransport layerb. &hy layerc. &ort layerd. All of the aboveVie Anser

Anser$d

1=. *hich of the folloing protocol has sloest speedCa. ?A'Ab. ?A?c. 9+@ALVie Anser

Anser$a

'his set of ?A# 3uestions and ansers helps anyone preparing for +omp'6A ?torage " ?#6Acertification eams. Bne should practice our complete set of 3uestions and ansers continously for %@)months for through understanding of ?A# 9undamentals and various eams and intervies.

1. *hat is the maimum number of loop ports that can participate in an arbitratedCa. 1%:b. 1%8

c. %47d. =Vie Anser

Anser$b

%. 6n a fabric topology hat is the discovery process that allocates fabric address to the participating n@portsC



a. 9logib. 9discc. !oth a " bd. #one of the aboveVie Anser

Anser$c

). *hich 9+ layer is responsible for echange<frame and se3uence managementCa. Layer =b. Layer 1c. Layer %d. Layer , /GL&0Vie Anser

Anser$c

,. *hich of the folloing login is associated ith creating an GL& level image pairCa. 9logib. &logic. &rlid. All of the a aboveVie Anser

Anser$c

4. *hat is the mechanism used to do flo control beteen participating #@&orts in a 9+communicationC

a. !@! +redit mechanismb. -@- +redit mechanismc. !oth a " bd. #one of the aboveVie Anser

Anser$c

7. 6n 9+& /9+ protocol for ?+?60 hich of the folloing phases is not mandatory for read typecommandsCa. +ommand phase

b. (ata phasec. 'ransfer ready phased. 5esponse phaseVie Anser

Anser$c

8. *hich of the folloing is /are0 not the responsibility of 5?+# service in a fabricC



a. #odes Eoining or leaving the fabricb. ?itches Eoining or leaving the fabricc. Allocation of fabric 6(sVie Anser

Anser$c

:. *hich component of the 9+ frame header has details about the GL&Ca. 5outing +ontrolb. +lass specific controlc. 'ype fieldd. (ata field controlVie Anser

Anser$c

;. *hich of the folloing enforces access control in ?A#<9+ sitchesC

a. Doningb. 'runkingc. 9lo controld. +lass of serviceVie Anser

Anser$a

1=. *hat is the significance -@&ortCa. +reates an arbitrated loopb. -tends the fabric by connecting to other fabrics

c. 5epresents un@initialized state of a portd. 5epresents port ith disconnected 9+ linkVie Anser

Anser$b

'his set of multiple choice ?A# storage 3uestions and ansers focuses on 9iber +hannel protocols.

1. 6n 9+ hich of the folloing are analogous to 6& address in data netorksCa. #ode **#b. &ort **#

c. 9abric addressd. *ell knon addressesVie Anser

Anser$c

%. *ho determines the **# of 9+ end pointa. Vendor



b. 9abric controllerc. #ode<Loop ports participating in the 9+ connectiond. #one of the aboveVie Anser

Anser$a

). *hich of the folloing is the use of trunkingCa. igh bandidth creation beteen sitchesb. 9lo controlc. 6n order deliveryd. 'iming serviceVie Anser

Anser$a

,. *hich field of the frame header signifies the presence of optional headerC

a. 5outing controlb. (ata field controlc. 9rame controld. +5+Vie Anser

Anser$b

4. *hich of the folloing uni3uely identifies an upper layer protocol command ithin a 9+ systemCa. Briginator echange idb. Briginator echange id and source id

c. 5eceiver echange idd. !oth /b0 " /c0Vie Anser

Anser$d

'his set of 9iber channel ?A# intervie 3uestions and ansers helps anyone preparing for !rocadeIlogic Adaptec intervies. Bne should practice complete set of 3uestions and ansers continously for%@) months for better understanding.

1. *hich of the folloing company manufactures 9+ sitches

a. !rocadeb. Iuantumc. #etAppsd. MedusaVie Anser

Anser$a



%. An 9+ analyzer can be used toa. +apture corrupted 9+ framesb. 9ind netork bandidth usagec. 6<B performanced. #one of the above

Vie AnserAnser$a

). 'o increase the distance of a fiber you ill usea. !Ab. 9+ sitchc. 5epeatersd. Media 6nterface AdaptersVie Anser

Anser$c

,. >!6+ >LM and ?9&s carry outa. ?imilar taskb. (ifferent tasksc. (epends on their usaged. Any of the aboveVie Anser

Anser$a

4. *hich of the folloing company manufactures 9+ !A

a. -muleb. Ilogicc. L?6d. All the aboveVie Anser

Anser$d

'his set of 9iber channel ?A# intervie 3uestions and ansers helps anyone preparing for +isco-mule L?6 ?torage etc. company intervies. Bne should practice complete set of 3uestions andansers continously for %@) months for better understanding.

1. A “9iber +onnector” is used toa. 9acilitate conversion beteen to forms of mediab. 'erminate the end of an optical fiber and it enables 3uicker connection and disconnectionc. +onnects a computer to storage devicesd. #one of the aboveVie Anser

Anser$b



%. ?9&/?mall form@factor pluggable0 uses hich kind of 9iber +onnectora. Lucent +onnector /L+0connectorsb. ?ubscriber +onnector /?+0 connectorsc. Multi@mode /MM0 fiberd. Any of the above

Vie AnserAnser$a

). 9iber Bptic +able usesa. electronic pulses to transmit 6nformation don copper linesb. light pulses to transmit 6nformation don fiber linesc. (oes not send any pulsesd. 5e3uires a connector to send any pulsesVie Anser

Anser$b

,. ?ingle@mode fiber supports transmission distance up toa. % kmb. 4 kmc. )=kmd. 1= kmVie Anser

Anser$d

4. As per the color coding schemes hich color is used for multi mode fiber cable

a. orangeb. yelloc. greend. redVie Anser

Anser$a

7. *hat is used to facilitate conversion beteen to forms of mediaa. ?9&b. M6A

c. ?+ 9iber +onnectord. L+ 9iber +onnectorVie Anser

Anser$b

8. *hat is the typical 6<B (ata rate supported by Ilogic %, series of 9+ !Aa. %>b



b. )>bc. 1=>bd. ,>bVie Anser

Anser$d

:. -ach 9+ !A has aa. Mac Addressb. 6& Addressc. *orld *ide #amed. #one of the aboveVie Anser

Anser$c

;. *hen a 9iber +hannel sitch is implemented in a ?A# the netork is referred to

a. 9abricb. (omainc. Active directoryd. ?itched fabricVie Anser

Anser$a d

1=. A ?A# netork can havea. 1 9+ sitchb. % 9+ sitch

c. 'here can be many 9+ sitchesd. #o 9+ sitchVie Anser

Anser$c

'his set of ?A# 3uestions and ansers helps anyone preparing for ?#6A " +omp'6A ?toragecertification eams. Bne should practice our complete set of 3uestions and ansers continously for %@)months for through understanding of ?A# 9undamentals and various eams and intervies.

1. *hich command is used to vie #9? shared directoriesC

a. shareb. shareallc. sharetabd. dfsharesVie Anser

Anser$d



a. &+!b. #'9?c. ?M!d. #6?Vie Anser

Anser$c

:. +69? authentication is done bya. Perberosb. #'LMc. L(A&d. !oth a " bVie Anser

Anser$d

;. ?M! as originally developed bya. 6!Mb. Microsoftc. )+BMd. 6ntelVie Anser

Anser$a

1=. 5&+ is used fora. transporting data over the netork

b. eecuting program on different computerc. reporting process controld. #one of the aboveVie Anser

Anser$b

'his set of multiple choice ?A# storage 3uestions and ansers focuses on various #A? storageprotocols such as #9? +69? and ?M! protocols.

1. 9olloing are some of the file sharing protocols

a. 'elnetb. #9? " +69?c. 9'&d. ''&Vie Anser

Anser$b



%. 9ile access protocols operate in hich layer of the B?6 modela. Applicationb. ?essionc. 'ransportd. #one of the above

Vie AnserAnser$a

). #9? " +69? area. 9ilesystemsb. Bperating systemsc. 'ransport protocolsd. 9ile access protocolsVie Anser

Anser$d

,. Gsing file access protocols data residing on hich of the folloing can be accessed$a. Local diskb. 5emote diskc. !othd. #eitherVie Anser

Anser$b

4. 'he file access protocols are primary features of

a. ?A#b. #A?c. 5outerd. Application serverVie Anser

Anser$b

7. #9? stands fora. #ull 9ile ?ystemb. #e 9ile ?ystem

c. #etork 9ile ?ystemd. #etare 9ile ?erverVie Anser

Anser$c

8. #9? doesn2t have the folloing characteristicsa. 6dempotent procedures



b. Bver #et!6B?c. ?tatelessd. Gses 5&+Vie Anser

Anser$b

:. #6? is used forCa. 5outing of packetsb. 9ile sharingc. #aming servicesd. 'erminal servicesVie Anser

Anser$c

;. Auto9? is a feature used forC

a. Automatic space allocationb. ?canning a filesystemc. (irectory servicesd. Mounting filesystemsVie Anser

Anser$d

1=. 9olloing are #aming servicesa. L(A&b. 9'&

c. 5&+d. &ingVie Anser

Anser$a

'his set of ?A# intervie 3uestions and ansers helps anyone preparing for 6!M and other storagecompanies intervies. Bne should practice the complete set of ?A# 3uestions for a thoroughunderstanding of ?torage concepts.

1. &ick the false statement

a. 5A6( Level 1 provides disk mirroringb. 5A6( Level % provides bit level striping ith amming code -++c. 5A6( Level , provides block level stripingd. 5A6( Level 4 provides block level striping and error correction informationVie Anser

Anser$d



%. *hich of the folloing provides byte level stripingCa. 5A6( 7b. 5A6( ,c. 5A6( %d. 5A6( 4

Vie AnserAnser$d

). ?tate true or falsea. #ested 5A6( provides better performance characteristics than the 5A6( levels that comprise them/true<false0 K 'rueb. 5A6( Level 7 has dual parity here as 5A6( Level 4 has single parity and both does block levelstriping/ true<false0 K 9alsec. 5A6( Level 8 does Asynchronous cached striping ith dedicated parity/true<false0 K 'rueVie Anser

Anser$d

,. *hich of the folloing is false about tape devicesCa. A tape drive is a data storage device that reads and rites data stored on a Magnetic tapeb. 'ape drives are used for archival storage of datac. 'ape media has lo unit cost and long archival stabilityd. 'ape drives allo random access of dataVie Anser

Anser$d

4. ?elect the correct option regarding tape drivea. 'ape drives have fast average seek timesb. 'ape drives can stream data at a very fast ratec. Archival life of data stored on tape is around 4 yearsd. 'ape drives can be used t store data on optical disksVie Anser

Anser$b

7. A tape library does not containa. 'ape (rive

b. !ar +ode 5eaderc. 5obotic Armd. 5A6( ArrayVie Anser

Anser$d

8. *hich of the folloing is not true about a tape siloC



a. Libraries provide large storage capacity at a very cheap rateb. 'hey have slo access timec. 'ape libraries are primarily used for backups and as the final stage of digital archivingVie Anser

Anser$b

:. 9or long term storage /archival0 of data hich of the folloing storage devices is generally useda. ard (iskb. +( 5omc. 9loppy (iskd. 'ape +artridgesVie Anser

Anser$d

;. *hich of the folloing +ompany manufactures 'ape LibraryC

a. Iuantumb. !rocadec. #etAppsd. +iscoVie Anser

Anser$a

1=. *hich of the folloing +ompany manufactures 5A6( devicesCa. Ilogicb. L?6

c. 9alconstord. IuantumVie Anser

Anser$b

'his set of ?A# intervie 3uestions and ansers helps anyone preparing for -M+ #etapp and otherstorage companies intervies. Bne should practice the complete set of ?A# 3uestions for a thoroughunderstanding of ?torage concepts.

1. *hich of the folloing is not a non volatile storage deviceC

a. Memory ?tickb. ard (iskc. 5andom Access Memoryd. #V5AMVie Anser

Anser$c



%. *hich of the folloing is se3uential access storage deviceCa. ard (iskb. +(@5BMc. 'ape +artridged. Main Memory

Vie AnserAnser$c

). *hich of the 9olloing is not an off@line storage deviceCa. 'ape +artridgeb. 9lash Memoryc. 'ape Libraryd. +(@5BMVie Anser

Anser$c

,. &ick the rong statement about the hard diskCa. ard disk has multiple platters and each platter has to read<rite heads one on each sideb. 6t2s a non@volatile " random access storage devicec. ard disk can only have 6(- or G?! interfaced. (ata 'ransfer rate is over := M!&?Vie Anser

Anser$c

4. *hich of the folloing statements about various hard disks is rongC

a. ?A'A (isks support faster transfer rates and have support for hot sappingb. G?! ard disks store data on flash memoryc. A'A hard disks cannot be connected eternally to computerVie Anser

Anser$b

7. *hich of the folloing is falseCa. #V5AM has built in battery hich keeps poer applied to it even after the poer is sitched off.b. 9lash memory can be electrically erased and reprogrammedc. 9lash memory is used in memory sticks

d. 9lash disk can only have G?! interface.Vie Anser

Anser$d

8. *hich of the folloing is not true about F!B(Ca. F!B( can combine hard disks of different sizes into a single unit ithout loss of any capacity.b. 6f a drive in a F!B( set dies then it may be easier to recover the files on the other (rives



c. F!B( supports data redundancyd. F!B( doesn2t has any storage controller intelligenceVie Anser

Anser$c

:. &ick odd one outa. Mirroringb. ?tripingc. -rror@correctiond. fault toleranceVie Anser

Anser$d

;. *hich one of the folloing is not an advantage of 5A6(Ca. (ata ?ecurity

b. 6ncreased " integrated capacityc. 6mproved performanced. -ffective data capacity increasesVie Anser

Anser$d

1=. &ick the false statement about 5A6( =a. &rovides no redundancyb. &rovides data stripingc. improves performance

d. &rovides fault toleranceVie Anser

Anser$d

'his set of ?A# intervie 3uestions and ansers helps anyone preparing for ?A# storage intervies.Bne should practice complete set of 3uestions and ansers continously for %@) months for betterunderstanding.

1. *hat ill be used by ?A# to provide connectivity beteen hosts and storageCa. 9+

b. i?+?6c. 9+ or i?+?6d. ?+?6Vie Anser

Anser$c

%. 6n 9+ structure hich layer maps block 6<B ?+?6 commands into 9+ framesC



a. 9+@,b. 9+@1c. 9+@=d. #one of the aboveVie Anser

Anser$a

). *hat are the maEor benefits of ?A#Ca. +entralized backupb. ?torage consolidationc. LA#@less backupd. ?hare resourcese. All of the aboveVie Anser

Anser$e

,. *hich data storage technology offers the best performanceCa. ?A#b. #A?c. (A?d. #one of the aboveVie Anser

Anser$a

4. 6dentify the data storage technology used in the belo data centerC

a. #A?b. ?A#c. (A?d. #one of the aboveVie Anser

Anser$b

'his set of multiple choice ?A# storage 3uestions and ansers focuses on ?torage 'opologies viz.(A? #A? and ?A# topologies.

1. *hat is the most basic level of storagea. ?A#b. (A?c. #A?d. 6?+?6Vie Anser

Anser$b



%. A #A? solution is most appropriate for hat type of data environmenta. ?ecured Accessb. ?hared accessc. 5emote accessd. &arallel access

Vie AnserAnser$b

). *hich three statements describe differences beteen ?torage Area #etork /?A#0 and #etorkAttached ?torage /#A?0 solutionsC +hoose three.a. ?A# is generally more epensive but provides higher performanceb. #A? uses '+&<6& for communication beteen hosts and the #A? serverc. #A? re3uires additional hardare on a host$ a host bus adapter for connectivityd. ?A# uses proprietary protocols for communication beteen hosts and the ?A# fabricVie Anser

,. 6<B re3uests to disk storage on a ?A# are calleda. 9ile 6<Bsb. ?A# 6<Bsc. !lock 6<Bsd. (isk 6<BsVie Anser

Anser$c

4. (emerits of (A? are. +hoose to.a. 6nterconnect limited to 1=km

b. -cessive netork trafficc. (istance limitationsd. 6nability to share data ith other serversVie Anser

Anser$c d

7. *hich topology is best suited for medium sized enterprise.a. #A?b. ?A#c. (A?Vie Anser

Anser$a

8. (isk controller driver in (A? architecture is replaced in ?A# either ith QQ a. 9+ &rotocolb. i?+?6c. '+&<6& stackd. Any one of the above



Vie Anser

Anser$d

:. *hich storage technology re3uires dontime to add ne hard disk capacitya. (A?b. ?A#c. #A?d. #one of the aboveVie Anser

Anser$a

;. 6n ?A# storage model the operating system vie storage resources as QQ devicesa. 9+b. ?+?6c. ?A#


Anser$b

1=. 6dentify a netork file protocol in the belo mentioned set.a. 9+b. +69?c. ?+?6d. #A?Vie Anser

Anser$b



'he folloing Eob intervie 3uestions highlight the evolution of storage topology from directlyattached storage model to netork attached model to storage area netorks. 6t also tests intervieee2spractical knoledge and understanding on various storage topology and components their advantagesand disadvantages.

1. +ompare and contrast the advantages and disadvantages of (A? #A? and ?A# topologies%. List don at least 1 practical eample here each of these topology is used.). List don reliability attributes of a (isk.,. +ompare and contrast 9+ ?A? and ?A'A (isks.4. *hat are the key differences beteen ?olid ?tate (rives and 5egular (isk (rives. *hich one

to choose for hich class of applicationC7. *hat are the advantages and disadvantages of using 'ape over (isk for backupC

'he folloing Eob intervie 3uestions test intervieee2s knoledge and understanding of variousstorage protocols$

1. +ompare and contrast A'A and ?A'A protocol%. +ompare and contrast &arallel and ?erial ?+?6). +ompare and contrast 9+ and i?+?6,. +ompare and contrast ?A? and 9+4. *hat is the need of **#C7. *hat makes a **# uni3ueC8. o many Maimum number of devices can be put in a &arallel ?+?6 !usC



:. o many ?A? devices can be connected in a ?A? (omainC;. o many 9+ devices can be connected in AL@'opologyC1=. o many 9+ devices can be connected in 9abric@'opologyC11. +ompare and contrast Doning and Lun MaskingC1%. *hat is the port number i?+?6 ?erver useC

1). *hat is the implication of 9+o- on i?+?6C1,. *hat is the impliation of 1=> ethernet on i?+?6C

'he folloing Eob intervie 3uestions test intervieee2s knoledge and understanding of various5A6( Levels and their advantage and disadvantages$

1. o many 6<B operations are issued by a 5A6( controller for a 5A6(4 rite operation /letsassume , disks in total0C

%. +ompare and contrast 5A6( , and 5A6( 4 ith respect to performance issues /read " riteperformances0.

). But of 5A6(1= and 5A6(=1 K hich is better for fault tolerance and hyC /lets have , disks in

total0,. *hat is 5A6( 4 *rite oleC4. *hat is degraded mode of operationC7. *hat is a ot ?pareC8. +alculate storage efficiency /in R terms0 for the folloing configurations. ?torage efficiency

can be defined as the actual amount of real data than can be stored in a given storage system.

a0 5A6(1 K (isk1 size 4= >! (isk% size 4= >!.b0 5A6(1 K (isk1 size 4= >! (isk% size 14= >!.c0 5A6(, K (isk1 size 4= >! (isk% size 4= >! (isk) size 4= >!.d0 5A6(, K (isk1 size 4=>! (isk% size 1== >! (isk) size 14= >!.e0 5A6(, K (isk1 size 4=>! (isk% size 1== >! (isk) size 14= >! (isk, size %==>!.f0 5A6(4 K (isk1 size 4= >! (isk% size 4= >! (isk) size 4= >!.g0 5A6(4 K (isk1 size 4=>! (isk% size 1== >! (isk) size 14= >!.h0 5A6(7 K (isk1 size 4= >! (isk% size 4= >! (isk) size 4= >! (isk, size 4= >!.i0 5A6(7 K (isk1 size 4= >! (isk% size 1== >! (isk) size 14= >! (isk, size %== >!. E0 But of all 5A6( levels *hich 5A6( level has maimum storage efficiencyC

'he folloing Eob intervie 3uestion test intervieee2s knoledge and understanding of various?torage (evice Management 'echni3ues. 'he focus is on intervieee2s ability to debug a typicalproblem seen in the data center in a step@by@step manner. ere is a problem statement$



6n the above setup application ere running on a ?erver hich is connected to a storage array througha ?A# cloud. After running smoothly for fe days the application reported sloness in response for6B initiated from the server. List don all the possibilities of sloness from device managementperspective.

'he folloing Eob intervie 3uestion test intervieee2s knoledge and understanding of various

?torage netork Management 'echni3ues. 'he focus is on intervieee2s ability to debug a typicalproblem seen in the data center in a step@by@step manner. ere is a problem statement$



6n the above setup ) ?ervers are connected to ) ?torage Arrays through an 9+ sitch.

List don at least 1= possible issues ith this topology. 'he issues could be related to performance orhigh availability or anything else that comes to you after seeing the picture.

?uggest ays to improve or change the topology.

'he folloing Eob intervie 3uestion test intervieee2s knoledge and understanding of various (ataManagement 'echni3ues as ell as igh Availability ?olutions.

1. (ra a picture describing an end@to@end fault tolerant or highly available storage infrastructure

from server to /both 6&@?A# and 9+ ?A#0 to storage@device. 'hink of high availability at everypossible point in the topology.

%. *hat are various (ata &rotection MethodsC). *hat is ?M K ierarchical ?torage ManagementC,. *hat are various (isaster 5ecovery ?olutionsC4. *hat are various backup challengesC7. +ompare and contrast !ackup and ?napshotC8. +ompare and contrast ?napshot and +(&C

!ackup Assignment @ 'he file system size is 1>! %>! )>! ,>! " 4>! for 4 consecutive days/assume only file additions have happened every consecutive day0

1. 'otal space needed for full backup for 4 days ould beC%. 'otal space needed for incremental backup for 4 days ould beC). 'otal space needed for differential backup for 4 days ould beC

'he folloing Eob intervie 3uestions highlight the enormity of storage challenges organizations facefor internet scale businesses as ell as traditional businesses. -ample includes K >oogle 9acebookLinked6n 'itter and many more companies.

+onvert the folloing storage capacities in terms in %S bytes or 1=Sy bytes$

1. 1 '! K C%. 1 P! K C). 1 >! K C,. 1 &! K C4. 1 ! K C



7. 1 D! K C8. 1 M! K C:. 1 -! K C;. >ive an eample of a file format or an application or a type of application that generates data

ith such capacities as mentioned above.

ere2s an eample of storage capacity needed by >oogle for >mail ?ervice /there are many otherstorage services like ou'ube >oogle !logger &icasa *eb Album >oogle Maps >oogle -arthetc.0.

+alculate the total storage capacity needed by email providers like >oogle for it2s >mail service$

1. *hat is the storage capacity of a typical hard diskC%. o much free storage space allocated to per gmail userC). *hat is the total number of gmail users<accounts in 6ndia " *orldC,. o many hard disks ill be needed to storage data of all gmail users in 6ndia " *orldC4. o >oogle solves this problemC

san interview

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