cs2402 question bank

8/10/2019 Cs2402 Question Bank

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CS2402 MOBILE AND PERVASIVE COMPUTING L T P C 3 0 0 3

UNIT I MOBILE NETWORKS 9Cellular Wireless Networks GSM Architecture Protocols Connection

Establishment Frequency Allocation Routin Mobility Mana ement Security GPRS!

UNIT II WIRELESS NETWORKS 9Wireless "ANs an# PANs $EEE %&'!(( Stan#ar# Architecture Ser)ices Network *i+er"AN ,lue -ooth. Wi.Fi WiMA/

UNIT III ROUTING 9Mobile $P 0*CP A#*oc Proacti)e an# Reacti)e Routin Protocols MulticastRoutin !

UNIT IV TRANSPORT AND APPLICATION LAYERS 9Mobile -CP WAP Architecture WWW Pro rammin Mo#el W0P W-"S W-P WSP WAE W-A Architecture WM" WM"Scri+ts!

UNIT V PERVASIVE COMPUTING 9Per)asi)e com+utin in1rastructure.a++lications. 0e)ice -echnolo y . *ar#ware2*uman.machine $nter1aces2 ,iometrics2 an# 3+eratin systems 0e)ice Connecti)ity Protocols2 Security2 an# 0e)ice Mana ement. Per)asi)e Web A++lication architecture.Access 1rom PCs an# P0As . Access )ia WAP

TOTAL: 45 PERIODS

TEXT BOOKS:(! 4ochen Schiller2 5Mobile Communications62 P*$2 Secon# E#ition2 '&&7!'! 4ochen ,urkhar#t2 Per)asi)e Com+utin 8 -echnolo y an# Architecture o1 Mobile$nternet A++lications2 A##ison.Wesley Pro1essional9 7r# e#ition2 '&&:

REFERENCES:(! Frank A#elstein2 San#ee+ ;S Gu+ta2 Gol#en Richar#2 Fun#amentals o1 Mobile an#Per)asi)e Com+utin 2 McGraw.*ill '&&% W&'( '6/ (&/ (7, (), * , (&/ (6' *1,6( .';/6 ) (&/ ) (/6 /(

-he two 1unctions o1 the trans+ort layer in the internet are check summin o)er

user #ata an# multi+le in > #emulti+le in o1 #ata 1rom a++lications!

2?% W&'( )* '../8 (&/ /=1, / ()'. 6,7(& , (&/ , /*(), 7) 8,7

-he sen#ers always calculate con estion win#ow 1or a win#ow start si e o1 the

con estion win#ow is one se ment! Sen#er sen#s one +acket an# waits 1or

acknowle# ement! $1 acknowle# ement arises it raises the le)el o1 con estion win#ow by

one! $1 sen#er sen#s two +ackets i1 acknowle# ement arises it raises the le)el o1

con estion win#ow by two! -his scheme raises the le)el o1 con estion win#ow e)ery

time the acknowle# es come back2 which takes roun#tri+ time ?R--@!-his is calle# the

e +onential rowth o1 the con estion win#ow!

2@% A8


23/48

Partitionin into two connections also allows the use o1 a #i11erent trans+ort layer

+rotocol between the 1orei n a ent an# the mobile host or the use o1 com+resse#

hea#ers etc! -he 1orei n a ent can act as a ateway to translate between #i11erent

+rotocols!

29% D)*'8


24/48

A *: ;/*

,u11erin o1 +ackets sent to the mobile host lost +ackets on the wireless link ?both

retransmitte# imme#iately by the mobile host or #irections@ will be 1orei n a ent2

res+ecti)ely ?so calle# local retransmission@

-he 1orei n a ent there1ore snoo+s the +acket 1low an# reco ni es

acknowle# ements in both #irections2 it also 1ilters AC;s

Chan es o1 -CP only within the 1orei n a ent

34% W&'( '6/ (&/ /; /./+/ (* , (&/ WAP *1/ ) ) '(),

Networks an# Network ,earers

-CP>$P as -rans+ort Protocol

Processors

35% W&'( '6/ (&/ ,'.* , WTLS .';/6

$t +ro)i#es the u++er.le)el layer o1 WAP with a secure trans+ort ser)ice inter1ace

that +reser)es the trans+ort ser)ice inter1ace below it! $n a##ition2 W-"S +ro)i#es an

inter1ace 1or mana in ?e! !2 creatin an# terminatin @ secure connections! $t +ro)i#es

1unctionality similar to -"S (!& an# incor+orates a##itional 1eatures such as #ata ram

su++ort2 o+timi e# han#shake an# #ynamic key re1reshin !

3>% W&'( )* +/' -; SCPS"TP

-he set o1 +rotocols #e)elo+e# 1or s+ace communication is known as s+ace

communications +rotocol stan#ar#s ?SCPS@2the e ten#e# -CP is calle# SCPS trans+ort

+rotocols?SCPS.-P@!

3?% W&'( '6/ A8


25/48


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there1ore not #isseminate# 1urther !A no#e waits with #issemination i1 these chan es are

most likely not yet stable! Waitin time #e+en#s on the time between the 1irst an# the best

announcement!

42% D/ ) / WDP%

W0P is Wireless 0ata ram Protocol o+erates on to+ o1 many #i11erent bearer

ser)ices ca+able o1 carry in #ata! At the -.SAP W0P o11ers a consistent #ata ram

trans+ort ser)ice in#e+en#ent o1 the un#erlyin bearer!W0P o11ers source an# #estination

+ort numbers use# 1or multi+le in an# #emulti+le in o1 #ata res+ecti)ely!

43% W&'( '6/ (&/ (&6// 7';* , WTA /=(/ 8* (&/ WAE '11.) '(), +,8/.

i! Content +ush8 A W-A or an ser)er can +ush the content!ii! *an#lin o1 network e)ents8 A #e)ice can ha)e a table in#icatin how to react to

certain e)ents 1rom the mobile network!

iii! Access to tele+hony 1unction8 A++lication runnin on the client can access

tele+hony 1unctions 1rom WM" or WM" scri+t is )ery sim+le!

44% D/ ) / WCMP%

-he wireless control messa e +rotocol +ro)i#es error han#lin mechanism 1or

W0P an# shoul# there1ore be im+lemente#! WCMP contains control messa es that

resemble the internet control messa e +rotocol 1or $P) 2 messa es an# can also be use#

1or #ia nostic an# in1ormational +ur+oses! WCMP can be use# by W0P no#es an#

ateways to re+ort error!

45% W&'( '6/ (&/ '1'-).)()/* , WML S 6)1(

WM" Scri+t ser)es as a com+lement to WM" an# +ro)i#es a eneral scri+tin

ca+ability in the WAP architecture! While all WM" content is static WM" Scri+t o11er

se)eral ca+abilities!

i@ Dali#ity check o1 user in+ut

ii@ Access to #e)ice 1acility

iii@ "ocal user interaction

i)@ E tensions to the #e)ice so1tware

CS' &' M3,$"E AN0 PERDAS$DE C3MPB-$NG 'I


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4>% D/ ) / WSP%

-he wireless session +rotocol has been #esi ne# to 1unction on to+ o1 the

#ata ram ser)ice W0P or the transaction ser)ice W-P! For both ty+e security can be

inserte# usin the W-"S security layer i1 require#!WSP +ro)i#e a share# state between a

client an# a ser)er to o+timi e content trans1er! *--P2 a +rotocol WSP tries to re+lace

within the wireless #omain!

4?% W&'( '6/ /; /'( 6/* , (&/ 66/ ( 8/ communication ser)ices to a class o1 users2 +re1erably trans+arently an# can

+ro)i#e +ersonali e# ser)ices while ensurin a 1air #e ree o1 +ri)acy > non.intrusi)eness!

2% W&'( '6/ (&/ -'*) '*1/ (* ,6 , ' P/6


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A lar e number o1 #i11erent inter1aces are use# to buil# an o+timi e# user

inter1ace! -here is a concurrent o+eration o1 o11line2 an# tem+orary online

systems!

A lar e number o1 s+eciali e# com+uter systems are interconnecte# )ia local

buses an# the internet!

Short ran e an# wi#e area wireless communication are inte rate#!

Security element +ro)i#e unauthori e# access!

3% L)*( (&/ &'6' (/6)*() * , ' P/6 Palmto+s > Pocket PCs > Cell +hones > Smart +hones > WAP +hones

"a+to+s > -ablet PCs > Notebook PCs

0eskto+ PCs > Ser)ers > Web -Ds

;iosks

$n)isible com+utin #e)ices > Smart interacti)e +osters

Wearable com+uters

5% W&'( '6/ (&/ ,+1, / (* , 1/6


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Com+onents o1 $n1rastructure 1or Per)asi)e Com+utin inclu#e Mobile com+utin

#e)ices2 Fi e# com+utin #e)ices2 Multimo#e RF Mobile communication in1rastructure

Fi e#.to.Mobile an# Mobile.to. Fi e# communication system inter1acesT2 -rust system

?security an# +ri)acy@2 Protocol stacks an# Personali e# ser)ice 1rameworks!

>% L)*( (&/ )** /* )


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@% D/ ) / L,7"1,7/6 D/ +ower units2 consum+tion

o1 lower +ower2 e tension o1 +ower +ro)isionin +erio# etc! assume critical si ni1icance!

$n a##ition2 +re)ention 1rom e cessi)e heatin also requires attention! Power

requirements can be re#uce# by se)eral means ri ht 1rom material selection an# chi+.

le)el #esi nin to so1tware #esi nin an# communication system #esi nin ! Power

+ro)isionin technolo y inclu#in the ,attery #esi n technolo y +lays a )ery im+ortant

role in the +rocess!

9% L)*( (&/ +' ,6 8)*1.'; 8/


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$$% W&'( )* PALM OS

Palm 3S is the com+uter o+eratin system that +ro)i#es a so1tware +lat1orm 1or

the Palm series o1 han#hel# +ersonal #i ital assistants ?P0As@ ma#e by Palm $nc!

Accor#in to Palm2 Palm 3S was #esi ne# 1rom the be innin to 1it into a +alm.si e

#e)ice o1 a s+eci1ic si e an# with a s+eci1ic #is+lay si e!

$2% E=1.') -6)/ .; '-, ( BE OS%

,e3S is a +ower1ul 3S #esi ne# +rimarily 1or Multime#ia #eskto+ use!

3ri inally ,e3S was #esi ne# 1or a custom com+uter system known as the ,e,o that

ha# s+ecial multime#ia in+ut>out+ut 1eatures2 an# was later +orte# to the Macintosh2 an#

1inally +orte# to the PC!

$3% L)*( (&/ &'6' (/6)*() * , I6DA%

Frequency ban#

Security

-ransmittin ca+abilities

,an#wi#th

S+eech

$4% W&'( )* (&/ .'(/*( (/ & ,., ; /+/6 /8 ) -'((/6)/*

-he latest in battery technolo y is the emer ence o1 lithium +olymer cells2 which

use a el material 1or the electrolyte! -he batteries are ma#e 1rom a 1ew thin an# 1le ible

layers2 an# #o not require a leak.+roo1 casin ! -his means the batteries can be ma#e in

any sha+e or si e!

$5% D/ ) / C6 *,/ 16, /**,6%

-he crusoe +rocessor consists mostly o1 so1tware! -he relati)ely small +rocessor

is #esi ne# as a ('%.bit )ery lon instruction wor# +rocessor ca+able o1 e ecutin u+ to

1our o+erations +er cycle!

CS' &' M3,$"E AN0 PERDAS$DE C3MPB-$NG 7(


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$>% W&'( 8, ;, +/' -; F)('.;J

-he 1italy keyboar# arran es the letters base# on their in#i)i#ual 1requency an#

the +robability o1 transitions in the En lish lan ua e! -he name is #eri)e# 1rom the

or#ers o1 letters in one o1 the to+ rows o1 the layout2 Qust as the JWER- layout!

$?% W&'( )* +/' ( -; B),"M/(6) *

,iometrics is the science an# technolo y o1 measurin an# analy in biolo ical

#ata! $n in1ormation technolo y2 biometrics re1ers to technolo ies that measure an#

analy e human bo#y characteristics2 such as 0NA2 1in er+rints2 eye retinas an# irises2

)oice +atterns2 1acial +atterns an# han# measurements2 1or authentication +ur+oses!

$@% W&'( )* ' O ('


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P'6( B $> M'6 *

UNIT I

(! 0iscuss brie1ly about the cellular systems!

'! 0iscuss the +rotocol architecture o1 GSM telecommunication system!

7! 0iscuss brie1ly the GPRS system!

! *ow #oes the near>1ar e11ect in1luence -0MA systemsK What ha++ens in C0MA

SystemsK What are countermeasures in -0MA systemsK

I! *ow is synchroni ation achie)e# in GSM an# why is it im+ortantK *ow system

security is maintaine# in GSMK

:! Re+resent #ia rammatically the +rotocol machines 1or multi+le access with collisiona)oi#ance!

%! 0escribe mobility mana ement in #etail

H! E +lain in #etail #i11erent routin mechanisms!

UNIT II

(! 0iscuss in #etail about the channel access control sub layer o1 *$PER"AN technique!

'! 0iscuss in #etail about the me#ium access control layer o1 $EEE%&'!((!

7! E +lain the han#o)er scenarios o1 *$PER"AN' in #etail!

! 0iscuss the 1unctionalities an# su++ort +ro)i#e# by "'CAP!

CS' &' M3,$"E AN0 PERDAS$DE C3MPB-$NG 77


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7! 0iscuss in #etail about the 0SR routin +rotocol use# in a#.hoc networks!

! S+eci1y the ine11iciencies o1 mobile $P re ar#in #ata 1orwar#in 1rom a

corres+on#ent no#e to a mobile no#e!

their routin table or cache contents!

I! 0iscuss an# #etail the #i11erences in to+olo y reor ani ation in 0S0D an# 0SR

routin +rotocols!

:! What are the eneral +roblems o1 mobile $P re ar#in security an# su++ort o1 quality

o1 ser)iceK

%! E +lain the 0ynamic *ost Con1i uration Protocol!

H! E +lain about -ra#itional routin al orithms in #etail!

(&! 0iscuss about A#hoc.networks!

UNIT IV

(! 0iscuss in #etail about the classical in#irect -CP an# the snoo+in -CP!

'! 0iscuss in #etail about the com+onents an# inter1ace o1 the WAP architecture!

7! Com+are snoo+in -CP with mobile -CP with e am+le network scenarios!

! *ow an# why #oes $ -CP isolate +roblems on the wireless linkK What are the main

#rawbacks o1 this solutionK

I! E +lain the WAE lo ical mo#el!

:! Which W-P class re1lects the ty+ical web access bestK *ow is unnecessary o)erhea#

a)oi#e# when usin WSP on to+ o1 this class 1or web browsin K

%! What are the enhancements o1 WAE to the classic client>ser)er mo#el o1 the webK

What are the 1unctions o1 this enhancementK

H! E +lain the 1ollowin 8 Free in an# transaction oriente# -CP!

(&! E +lain about WM" an# WM" scri+t with the hel+ o1 an e am+le!

UNIT V



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(! E +lain the requirement o1 com+utational in1rastructures!

'! E +lain the +er)asi)e com+utin technolo y! Com+are with ubiquitous com+utin !

7! E +lain in #etail about the relationshi+ between +er)asi)e an# mobile com+utin !

! "ist an# e +lain the a++lication o1 +er)asi)e Com+utin !

I! What are the 1eatures o1 #istribute# Com+utin K

:! What are the #esi n an# im+lementation +roblems in +er)asi)e com+utin K

%! E +lain in #etail about the +er)asi)e web a++lication architecture!

H! 0iscuss the a++roaches on how the users connect to the internet )ia P0A!

(&! 0iscuss the al orithms an# +rotocols to a##ress security issue in 0e)ice connecti)ity!

ANAND INSTITUTE OF HIGHER TECHNOLOGY

KA HIPATTUR

DEPARTMENT OF COMPUTER SCIENCE ! ENFINEERING

CS2402" MOBILE AND PERVASIVE COMPUTING

UNIT WISE UNIVERSITY #UESTIONS

UNIT I

PART A



36/48

(! Assume a recei)er is locate# (& km 1rom a (F0M system com+are# to a

C0M systemK What ha++ens to the transmission quality o1 connections i1 the loa#

ets hi her on the cellK A16 M'; 200@

7! What is s+rea#in 1actorK A16 M'; 20$0

! What is +ollin K A16 M'; 20$0

+ro+a ationK N,< D/ 200?

I! 0iscuss about the F00 scheme! N,< D/ 200?

:! *ow the recei)er a#o+ts 1or multi +ath +ro+a ation e11ects #urin wireless rece+tionK

N,< D/ 200@

%! "ist out the #isa#)anta es o1 cellular system! N,< D/ 200@

H! What are the 1our ty+es o1 han#o)er a)ailable in GSMK NOV DEC 20$$

(&! 0istin uish between mobile terminate# call an# mobile ori inate# call! NOV DEC

20$$

((! What are the new com+onents a##e# to GPRS networkK MAY UNE20$2

('! Why are so many #i11erent i#enti1iers>a##ress nee#e# in GSMK MAY UNE20$2

(7! What are the #i11erent control channels use# in GSMK NOV DEC 20$2

( ! What are the security ser)ices +ro)i#e# by the GSMK NOV DEC 20$2

PART B(! *ow #oes 1requency reuse enhance cellular network ca+acityK ,esi#es the number o1

users2 what other maQor 1actor in1luences the #ecision on cluster si eK A cellular

system uses 1requency s+ectrum (%&& M* to (% & M* 1or u+link channels an#

(%I& M* to (H&& M* 1or #ownlink channels res+ecti)ely! Each channel takes '&&

;* an# can be share# by % users! Each user nee#s one u+link an# one #ownlink

CS' &' M3,$"E AN0 PERDAS$DE C3MPB-$NG 7I


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channel! *ow many users can be su++orte# without 1requency reuse in this cellular

systemK ?(I@ A16 M'; 200@

'! What is the use o1 s+rea# s+ectrumK Sketch the block #ia ram o1 the -ransmitter an#

Recei)er o1 0SSS! E +lain what each block #oes an# what the si nal looks like ? in

time an#>or 1requency #omains@ at each location in the block #ia ram with an

e am+le! ?(I@ A16 M'; 200@

7! 0iscuss in #etail the ty+es o1 antennas with their ra#iation +atterns V(' A16 M';

20$0

! E +lain #i)ersity techniqueV A16 M'; 20$0

achie)e#K *ow can 0SSS systems bene1it 1rom multi.+ath +ro+o ationK?(I@

N,< D/ 200@

(7! ?i@ E +lain the GSM system architecture with a neat #ia ram! ?%@ NOV DEC 20$$

?ii@ 0escribe the security ser)ices +ro)i#e# by GSM! ?%@ NOV DEC 20$$

( ! ?i@ E +lain the +rotocol architecture o1 GSM 1or si nalin ! ?%@ NOV DEC 20$$?ii@ E +lain the architecture o1 GPRS with a neat #ia ram! ?%@ NOV DEC 20$$

(

MAY UNE20$2

CS' &' M3,$"E AN0 PERDAS$DE C3MPB-$NG 7:


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?ii@ What are the ty+ical ste+s 1or han#o)er on GSM networkK?I@

MAY UNE20$2

(I! E +lain the ste+s in)ol)e# in the call #eli)ery +roce#ure in GSM network in the

1ollowin cases8

?i@ GSM mobile terminate# call

?ii@ GSM mobile ori inate# call

(:! Write notes on the system architecture o1 the GSM?(I@ NOV DEC 20$2

(%! What are the )arious +ossible han#o)er scenarios in GSMK E +lain them in #etail!

NOV DEC 20$2

UNIT II

PART A

(! Consi#er the han#o11 +roce#ure in GSM systems that is base# on relati)e si nalstren th with threshol#9 that is2 a mobile switches 1rom one cell to another i1

?a@ the si nal at the current ,S is su11iciently weak ?less than a +re#e1ine# threshol#@

an# ?b@ the other si nal is stron er than the two! What are the #rawbacks o1 this

scheme2 when the threshol# is too low or too hi hK A16 M'; 200@

'! State the #i11erent ty+es o1 trans+ort mo#es an# the channels use# to carry +ackets in

0i ital Au#io ,roa#castin ! A16 M'; 200@

7! 0istin uish between so1t han#o)er an# har# han#o)erK A16 M'; 20$0

! 0e1ine 1oot+rint with res+ect to satellite systemK A16 M'; 20$0

(&! What are the three "ow Power States +ro)i#e# by ,luetoothK NOV DEC 20$$

((! $n what situations collisions occur in $EEE %&'!((K MAY UNE20$2

CS' &' M3,$"E AN0 PERDAS$DE C3MPB-$NG 7%


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('! What is a#a+ti)e mo#ulationK MAY UNE20$2

(7! 0istin uish between in1rastructure an# a# hoc networks! NOV DEC 20$2

( ! What is ,luetoothK NOV DEC 20$2

PART B

(! Name the main elements o1 GSM system architecture an# #escribe their 1unctions!

What are the a#)anta es o1 s+eci1yin not only the ra#io inter1ace but also the

internal o1 the GSM SystemK E +lain the inter ,SC2 intra MSC han#o)er +rocess

in the GSM system usin ty+ical si nals an# a messa e sequence chart! E +lain the

#ecision +oints an# the resource allocation ste+s2 i1 they e ist! ?(I@ A16 M'; 200@

'! What is 0A,K E +lain the com+onents2 1rame 1ormat an# the +rotocol use# by 0A,

to access #i11erent 1ormats o1 #ata also #escribe how 0D, is use# 1or #ata

broa#castin an# to access hi h s+ee# internet! ?(I@ A16 M'; 200@7! 0escribe 0A,V(I A16 M'; 20$0

! E +lain routin 2 locali ation an# han#o)er in satellite systems! V(I A16 M'; 20$0

200?

I! 0iscuss brie1ly the GPRS system!?(I@ N,< D/ 200?

:! E +lain the GSM han#o)er schemes an# state the reasons 1or their occurrence !Whish

resources nee# to be allocate# #urin han#o)er 1or #ata transmission usin GPRS by

satis1yin JosK?(I@ N,< D/ 200@

%! *ow is synchroni ation achie)e# in GSM an# why it is im+ortantK *ow system

security is maintaine# in GSMK?(I@ N,< D/ 200@

H! ?i@ 0escribe *i+er"AN architectural com+onents an# their interactions! ?%@

NOV DEC 20$$

?ii@ E +lain the architecture o1 WiFi in #etail! ?%@ NOV DEC 20$$

(&! ?i@ E +lain the system architecture o1 $EEE %&'! ?%@ NOV DEC 20$$?ii@ 0escribe the architecture o1 WiMA/ in #etail! ?%@ NOV DEC 20$$

((! Com+are *i+er"AN an# ,luetooth in terms o1 a#hoc ca+abilities2 +ower sa)in

mo#e2 sol)in hi##en terminal +roblem2 +ro)i#in reliability 1airness +roblem

re ar#in channel access! MAY UNE20$2

CS' &' M3,$"E AN0 PERDAS$DE C3MPB-$NG 7H


40/48

('! ?i@ E +lain the o+eration o1 0FWMAC 0CF with a neat timin #ia ram?%@

MAY UNE20$2

?ii@ 0raw the MAC 1rame o1 %&'!(( an# list the use o1 the 1iel#s!?%@

MAY UNE20$2

(7! Write notes on the MAC mana ement o1 the $EEE %&'!(( +rotocol! NOV DEC

20$2

( ! Write notes on the channel access control sublayer! NOV DEC 20$2

UNIT IIIPART A

(! $n the 0istribute# Coor#ination Function ?0CF@ +rotocol o1 $EEE %&'!((2 why #oes a

No#e wait only S$FS time units ?a1ter the last #ata +acket rece+tion@ be1ore sen#inan AC;2 while waitin 0$FS time units be1ore attem+tin a #ata transmissionK

A16 M'; 200@

'! What are the a#)anta es an# +roblems o1 1orwar#in mechanisms in ,luetooth

networks re ar#in security an# +ower sa)in K A16 M'; 200@

7! State the three +hases o1 the me#ium access o1 #i11erent com+etin no#es! A16 M';

20$0

! What are the +ower sa)in mechanisms in ,luetoothK A16 M'; 20$0

:! Why the P* layer o1 $EEE %&'!(( is sub#i)i#e#K What about *i+er"AN' an#

,luetoothK N,< D/ 200@

%! What is the 1unctionality "'CAPK "ist the #i11erent ty+es o1 lo ical channels it

+ro)i#esK N,< D/ 200@

H! What are the requirements o1 mobile $P stan#ar#K NOV DEC 20$$

CS' &' M3,$"E AN0 PERDAS$DE C3MPB-$NG &


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(&! 0i11erentiate wire# networks routin 1rom a#.hoc wireless networks

routin ! NOV DEC 20$$

((! What is re)erse tunnelin K MAY UNE20$2

('! What are the +roblems o1 +roacti)e routin K MAY UNE20$2

(7! What are the #isa#)anta es o1 $.-CPK NOV DEC 20$2

( ! What are the basic 1eatures o1 WM"K NOV DEC 20$2

PART B

(! Bsin $EEE %&'!(( ?0CF@8 S( an# S' sen# C,R>B0P tra11ic to the common

#estination 0! Consi#er S(2 S' an# 0 all within recei)e ran e o1 each other when the

basic scheme is use# ?no R-S>C-S@8 0escribe a collision ?what ha++ens be1ore2

#urin 2 an# a1ter@! What #oes the collision +robability #e+en# onK When R-S>C-S is

use#8 what are the chan es to the +re)ious answersK Comment also on the throu hout

an# 1airness! ?(I@ A16 M'; 200@

'! 0escribe the brie1ly how collision is a)oi#e# in *$PER"AN (! ?%@ A16 M';

200@

7! 0raw the +rotocol architecture o1 ,luetooth an# e +lain brie1ly the ,ase ban# layer

an# "'CAP o1 ,luetooth! ?%@! A16 M'; 200@

! 0escribe the architecture o1 ,luetooth! V(I A16 M'; 20$0

:! 0iscuss in #etail about the MAC layer o1 $EEE %&'!((?(I@ N,< D/ 200?

CS' &' M3,$"E AN0 PERDAS$DE C3MPB-$NG (


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%! E +lain the 1iel#s o1 $EEE %&'!(( MAC +acket structure !Com+are them with $EEE

%&'!((b MAC 1iel#s!?%@ N,< D/ 200@

H! E +lain the han#o)er scenarios o1 hi+er"AN' in #etail!?%@ N,< D/ 200@

(&! *ow is roamin on layer ' achie)e#2 an# how are chan es in to+olo y re1lecte#K

What are the #i11erences between in1rastructure base# an# a#hoc networks re ar#in

roamin K?(I@ N,< D/ 200@

((! ?i@ "ist the entities in)ol)e# in mobile $P an# #escribe the +rocess o1 #ata trans1er

1rom a mobile no#e to a 1i e# no#e an# )ice

)ersa! ?%@ NOV DEC 20$$

?ii@ Why is con)entional routin in wire# networks not suitable 1or wireless

networksK Substantiate your answers with suitable e am+les! ?%@ NOV DEC 20$$

('! ?i@ E +lain in #etail 0ynamic *ost Con1i uration Protocol! ?%@ NOV DEC 20$$

?ii@ 0escribe how the multicast routin is #one in a#.hoc networks! ?%@ NOV DEC

20$$

(7! ?i@ Show the ste+s require# 1or a han#o)er 1rom one FA to another FA inclu#in layre.

' an# layre.7! Assume %&'!(( as layer.'! ?%@ MAY UNE20$2?ii@ Name the ine11iciencies o1 Mobile $P re ar#in #ata 1orwar#in 1rom CN to

MN! What are the o+timi ations +ossibleK MAY UNE20$2

( ! ?i@ What are the #i11erences between wire# networks an# a#hoc wireless networks

relate# to routin K MAY UNE20$2

?ii@ What is the nee# 1or 0*CPK With the state chart e +lain the o+erations o1

0*CPK MAY UNE20$2

(

NOV DEC 20$2

(I! With an e am+le e +lain the +rocess o1 the #ynamic source routin o1 the A#.hoc

network! NOV DEC 20$2

UNIT IV

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PART A

$% *ow can 0*CP be use# 1or mobility an# su++ort o1 mobile $PK A16 M'; 200@

2% What are the #i11erences between A30D an# the stan#ar# #istance )ector al orithmK

Why are e tensions nee#e#K A16 M'; 200@

3% What are the #rawbacks o1 wire# networksK A16 M'; 20$0

4% 0e1ine 0SR A16 M'; 20$0

5% What are the +roblems relate# to the use o1 0*CPK N,< D/ 200?

>% 0iscuss some o1 the routin metrics to be consi#ere# in a mobile network layerK

N,< D/ 200?

?% *ow #oes re istration on layer 7 o1 a mobile no#e workK N,< D/ 200@

@%S+eci1y the 0*CP state transition #ia ram 1or acquirin the $P a##ress! N,< D/

200@

9% "ist the a#)anta es an# #isa#)anta es o1 mobile -CPK NOV DEC 20$$

$0%0e1ine WAE! NOV DEC 20$$

$$% Name the a#)anta es an# #isa#)anta es o1 user acknowle# ement in W-P!

MAY UNE20$2

$2%*ow $.-CP isolate the +roblems on the wireless linkK MAY UNE20$2

$3%What is Case.o1 A##ressK NOV DEC 20$2

$4%Mention certain situation where A# hoc networks are the only choice! NOV DEC20$2

PART B



44/48

(! Gi)en the network to+olo y below2 use the #ynamic source routin al orithm to

com+ute the shortest +ath 1rom A to all other no#es! Make sure to show the results o1

the com+utation at each ste+! ?(I@ A16 M'; 200@

'! Consi#er a mobile no#e MN 1rom network /! -he user o1 MN wishes to

communicate with a corres+on#in no#e CN in network ! -he no#e MN mo)es 1rom

/ to a 1orei n network A! 0escribe the sequence o1 messa es that are require# in

Mobile $P) so that MN an# CN can continue to communicate! $nclu#e both the user

#ata messa es an# the Mobile $P control messa es! Now2 consi#er the case where CN

mo)es to 1orei n network , while MN is still in the 1orei n network A! Can CN an#

MN still communicateK ?0oes Mobile $P su++ort both en#+oints mo)in K@ Show the

messa e 1low to in#icate how it will succee# or 1all in this case! ?(I@ A16 M';

200@

7! E +lain o+timi ation in mobile $P in #etail! V(I A16 M'; 20$0

! E +lain $P)I +rotocol in #etail! V(I A16 M'; 20$0

I! 0iscuss how o+timi ation is achie)e# in mobile $PK?I@ N,< D/ 200?

:! 0iscuss in #etail about the 0SR routin +rotocol use# in a#hoc networksK?(I@

N,< D/ 200?

%! S+eci1y the ine11iciencies o1 mobile $P re ar#in #ata 1orwar#in 1rom a

corres+on#ent no#e to a mobile no#e! State the eneral +roblems o1 mobile $P

re ar#in security an# su++ort o1 Juality o1 ser)iceK?(I@ N,< D/ 200@

CS' &' M3,$"E AN0 PERDAS$DE C3MPB-$NG


45/48

H! With a suitable e am+le com+are the beha)iour o1 0S0D an# 0SR al orithms with

their routin table or cache contentsK?(I@! N,< D/ 200@

(&! ?i@ State the requirements o1 WAP! E +lain its architectural com+onents! ?%@

NOV DEC 20$$

?ii@ E +lain WM" an# WM" scri+ts with an e am+le! ?%@ NOV DEC 20$$

((! ?i@ What is W-PK 0iscuss about its classes! ?%@ NOV DEC 20$$

?ii@ E +lain the architecture o1 W-A! ?%@ NOV DEC 20$$

('! ?i@ E +lain the mechanism o1 -CP that in1luence the e11iciency in mobile

en)ironment!?%@ MAY UNE20$2

?ii@ E +lain the o+eration o1 mobile -CPK MAY UNE20$2

(7! ?i@ Why has a scri+tin lan ua e been a##e# to WM"K *ow can this lan ua e hel+

sa)in ban#wi#th an# re#ucin #elayK MAY UNE20$2

?ii@ Which W-P class re1lects the ty+ical web access bestK *ow is unnecessary

o)erhea# a)oi#e# when usin WSP on to+ o1 this class o1 web browsin K ?%@

MAY UNE20$2

( ! What is the nee# 1or snoo+in -CPK E +lain its +rocessin with its a#)anta es an#

#isa#)anta es! NOV DEC 20$2

(

UNIT V

PART A

(! *ow an# why #oes $ -CP isolate +roblems on the wireless linkK What are the main

#rawbacks o1 this solutionK A16 M'; 200@

'! Mention two WAP ser)ice +ro)i#ers! Fin# two cell +hones su++ortin WAP an#

i#entity which WAP )ersion they su++ort! A16 M'; 200@

7! What is the #i11erence between -CP an# B0P A16 M'; 20$0

CS' &' M3,$"E AN0 PERDAS$DE C3MPB-$NG


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! Mention any salient 1eatures o1 WAP! A16 M'; 20$0

networksK N,< D/ 200?

I! 0iscuss the +roblems o1 a 1ile system in mobile en)ironmentK N,< D/ 200?

:! Can the +roblems usin -CP 1or mobile communication be sol)e# by re+lacin -CP

with snoo+in -CPK 4usti1y your answer! N,< D/ 200@

%! S+eci1y the 1iel#s o1 minimal enca+sulation metho# in mobile network layer!

N,< D/ 200@

H! What is Per)asi)e Com+utin K NOV DEC 20$$

(&! What are the )arious issues relate# to #e)ice mana ement in +er)asi)e

com+utin K NOV DEC 20$$

((! What is meant by +er)asi)e com+utin K *ow is it #oneK MAY UNE20$2

('! What makes #e)ice connecti)ity +ossible in +er)asi)e com+utin K

MAY UNE20$2

(7! What are the key +arts o1 the har#ware o1 +er)asi)e technolo iesK NOV DEC 20$2

( ! *ow #oes biometric authentication work in +er)asi)e com+utin K NOV DEC 20$2

PART B

(! As a trans+ort layer +rotocol2 -CP uses a win#ow mechanism to e ercise 1low control

o)er the best e11ort $P in the internet! Flow control is e ercise# by the e# e router

base# on con estion status encountere# in the core routers between the -CP sen#er

an# the -CP recei)er! ?i@ 0escribe the o+eration o1 the win#ow 1low control

mechanism! ?%@ A16 M'; 200@

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47/48

'! AC;s 1rom the -CP recei)er are the basis that the -CP sen#er uses to a#Qust the

sen#in win#ow si e! 0escribe an# #iscuss how AC;s ?%@ A16 M'; 200@

7! S+eci1y the enhancements ma#e to the basic client ser)er architecture o1 the web to

suit a mobile wireless userK ,rie1ly #iscuss the main oals o1 WAP! E +lain the layers

o1 WAP +rotocol use# to achie)e the 1ollowin 8 A client wants to ha)e a share# state

with the ser)er 1or trans1errin the content! ?(I@ A16 M'; 200@

! 0iscuss the role o1 WWW in su++ort 1or mobility!V(I A16 M'; 20$0

'% $n#irect -CP VI

-% Snoo+in -CPVI

% Per1ormance enhancin +ro iesV A16 M'; 20$0

I! 0iscuss in #etail about the classical in#irect -CP an# snoo+in -CP!?(I@ N,< D/

200?

:! 0iscuss in #etail about the com+onents an# inter1ace o1 the WAP architecture!?(I@

N,< D/ 200?

%! Com+are snoo+in -CP with Mobile -CP with e am+le network scenarios!?%@

H! *ow an# why #oes $.-CP isolate +roblems on wireless linkK What are the main

#rawbacks o1 this solutionK?%@ N,< D/ 200@

(&! E +lain in #etail about the architecture o1 WAPK?(I@ N,< D/ 200@

((! ?i@ 0escribe the )arious har#ware com+onents in)ol)e# in +er)asi)e com+utin

#e)ices! ?%@ NOV DEC 20$$

CS' &' M3,$"E AN0 PERDAS$DE C3MPB-$NG :


48/48

?ii@ E +lain how a +er)asi)e web a++lication can be secure# usin an XAuthentication

Pro yL! ?%@ NOV DEC 20$$

('! ?i@ What are the a++lications o1 +er)asi)e com+utin K 0iscuss any two o1 them! ?%@

NOV DEC 20$$

?ii@ E +lain how +er)asi)e web a++lications can be accesse# )ia WAP!?%@

NOV DEC 20$$

(7! ?i@ E +lain the o+eratin system issues relate# to miniature #e)ices?%@

MAY UNE20$2

?ii@ What are the #esi n an# im+lementation issues in #e)ice connecti)ity as+ecto1 +er)asi)e com+utin K E +lain! ?%@ MAY UNE20$2

( ! E +lain the )arious so1t sur1ace an# semi.so1t.sur1ace base# #is+lay systems an#

technolo ies! ?(I@ MAY UNE20$2

(

NOV DEC 20$2

(I! Write short notes on the smart.car# base# authentication )ia the $nternet! NOV DEC

20$2

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