certificacion windows server

7/21/2019 Certificacion windows server

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Module 2

Connecting NetworkComponents


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Module Overview

Understanding the OSI Model

Understanding Adapters, Hubs, and Switches

Understanding Routing

Understanding Media Types


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esson !" Understanding the OSI Model

The OSI Model

The ower ayers o# the OSI Model

The Middle ayers o# the OSI Model

The Upper ayers o# the OSI Model


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The OSI Model

$ach layer de#ines networ%ing tas%s

$ach layer co&&unicates with thelayers above and below it

ayer ' provides services #or progra&sto gain access to the networ%

ayers ! and ( de#ine the networ%)sphysical &edia and related tas%s

Application

Presentation

Session

Transport

NetworkData-Link

Physical

7

3

4

5

6

2

1

The S! "o#el #e$ines the %eneric tasks that are per$or"e# $ornetwork co""&nication

The S! "o#el #e$ines the %eneric tasks that are per$or"e# $ornetwork co""&nication


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The ower ayers o# the OSI Model

S! Layer '&nctions

*ata+lin% layer

Trans#erring data between devices

Managing MA addressing

$ncapsulating higher protocols into #ra&es

-assing protocol+speci#ic data up the stac%

$rror chec%ing

-hysical layer

Managing connections to the &edia

Managing shared &edia access

Merging data onto the &edia

onverting signals on the &edia into #ra&es

The lower layers o$ the S! "o#el are responsi(le $or

encaps&latin% re)&ests $ro" the &pper layers into a"eanin%$&l str&ct&re to (e "er%e# onto the "e#ia

The lower layers o$ the S! "o#el are responsi(le $orencaps&latin% re)&ests $ro" the &pper layers into a"eanin%$&l str&ct&re to (e "er%e# onto the "e#ia


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The Middle ayers o# the OSI Model

These layers are o$ten re$erre# to as thenetwork protocol layer

These layers are o$ten re$erre# to as thenetwork protocol layer

S! Layer '&nctions

Transport layer

Trans#erring data between applications

-roviding reliable end+to+end trans#er$ncapsulating application re.uests

-assing inco&ing datagra&s to the appropriatesession layer protocol

/etwor% layer

I&ple&enting a logical addressing sche&e

Routing pac%ets to the appropriate logical address

$ncapsulating transport layer datagra&s

-assing inco&ing pac%ets up the protocol stac%


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The Upper ayers o# the OSI Model

These &pper layers are occ&pie# (y network applications*

or ser+ices

These &pper layers are occ&pie# (y network applications*or ser+ices

S! Layer '&nctions

Application layer

Identi#ying networ% hosts

*eter&ining available resourcesSynchroni0ing co&&unications

-resentation layer1or&atting and encrypting data

-roviding co&patibility by selecting appropriatesynta2

Session layer$stablishing, &aintaining, and ter&inating sessions

Selecting the appropriate transport layer protocol


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esson (" Understanding Adapters, Hubs, andSwitches

3hat Is a /etwor% Adapter4

Trans&ission Speeds

3hat Is a Hub4

haracteristics o# a Switch

3hat Is a 5 A/4


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3hat Is a /etwor% Adapter4

The network a#apter encaps&lates the instr&ctions itrecei+es $ro" the protocol stack into a lo%ical se)&ence

known as a $ra"e

The network a#apter encaps&lates the instr&ctions itrecei+es $ro" the protocol stack into a lo%ical se)&ence

known as a $ra"e

A network a#apter,

on+erts instr&ctions $ro" the network protocol stack intoelectrical si%nals

.er%es these si%nals onto the wire

on+erts electrical si%nals recei+e# on the wire into"eanin%$&l instr&ctions $or the network protocol stack


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Trans&ission Speeds

The ter" (an#wi#th is o$ten &se# to #escri(e thetrans"ission spee# o$ a networkThe ter" (an#wi#th is o$ten &se# to #escri(e thetrans"ission spee# o$ a network

To#ay/s 0thernet is typically 1 i%a(its per secon#

ontention re#&ces thro&%hp&t

0arly 0thernet operate# at 3 .e%a(its per secon#


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3hat Is a Hub4

A h&(,0na(les star wirin% to pro+i#e a central wirin% point

S&pports "&ltiple ports

Pro+i#es $or a #e%ree o$ $a&lt isolation

0 ten#s yo&r network


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haracteristics o# a Switch

A switch pro+i#es the sa"e (asic $&nctionality as a h&(A switch pro+i#es the sa"e (asic $&nctionality as a h&(

A switch,

Pro+i#es wirin% concentrator $&nctionality like a h&(

0na(les network tra$$ic "ana%e"ent

Per$or"s $irewall $&nctions

.akes ro&tin% #ecisions (ase# &pon tra$$ic priority

Type Description

ayer ( MA +level bridging

ayer 6 Routing #unctionality added

ayer 7 1irewall and 8OS support available


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A LAN ena(les yo& to,

!solate network tra$$ic

3hat Is a 5 A/4

.ana%e network tra$$ic

econ$i%&re the network witho&t nee#in% to "o+eno#es

!ncrease the n&"(er o$ no#es witho&t nee#in% to

rewire the network

ro&p physically #isperse# no#es into lo%ical LANs

5 A/ A

5 A/ 9


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esson 6" Understanding Routing

3hat Is a Router4

How a Router *eter&ines a *estination

o&&on Routing -rotocols

*iscussion" Selecting a Suitable Routing -rotocol


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3hat Is a Router4

A ro&ter,

.ana%es network tra$$ic (y only $orwar#in% packetswhen re)&ire#

.akes ro&tin% #ecisions (ase# on the in$or"ation"aintaine# in its ro&tin% ta(le

ecei+es e plicitly a##resse# $ra"es $ro" networkno#es

S&pports one or "ore ro&ta(le protocols* s&ch as !P

Ser+er

LAN

LAN

o&ter ateway o&ter ateway

Ser+er


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How a Router *eter&ines a *estination

/etwor% A

/etwor% 9

/etwor%

-ac%et to "!(

Routing Table

*est" Send to"A A:!9 9:!

9:(;7

Routing Table

*est" Send to"A 9:!9 9:(;7

:(;7

A"!

9"! 9"(;7

"(;7


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o&&on Routing -rotocols

Protocol Description

RI- I unreachable

OS-1

I


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*iscussion" Selecting a Suitable Routing -rotocol

Which routing protocol shouldyou use?


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esson 7" Understanding Media Types

oa2ial able

Twisted+-air able

3hat Are the AT Standards4

1iber able

*iscussion" Selecting a Suitable abling Strategy


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oa2ial able

oa ial ca(les "&st (e ter"inate#oa ial ca(les "&st (e ter"inate#

Types o$ oa ial a(le Description

Ri&pedance !7 A3< cable provides the solid core


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Twisted -air able

Twiste#-pair characteristics,

!nstallation is co"parati+ely ine pensi+e

'a&lt $in#in% is easier #&e to the star wire# way in whichthe ca(le is lai#

The ca(le s&pports "any &ses* inclin% #ata an#telephony


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3hat Are the AT Standards4

ATstan#ar# sa%e

! 5oice or &ode&

( I9M cabling

6 $thernet

7 To%en Ring

; High+speed $thernet

;e a !@< $thernet

' !@< $thernet


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1iber able

Types o$ $i(er ca(le Description

Multi&ode #iber Supports bandwidths o# around !@@ Mbps

at distances o# up to ( %ilo&eters and !@


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*iscussion" Selecting a Suitable abling Strategy

What cabling system shouldyou use?


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ab" onnecting /etwor% o&ponents

$2ercise !" *eter&ining the Appropriate /etwor%Hardware

$2ercise (" Selecting a Suitable 3iring In#rastructure

0sti"ate# ti"e, 3 "in&tes


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ab Scenario

ontoso, td: has created a new research anddevelop&ent tea&: As a result, a nu&ber o# re&ote R D *branch o##ices are being #itted

Eou are responsible #or planning the installation o# newnetwor% co&ponents #or these new branch o##ices: Alan9rewer, the national R D * Manager, has beenco&&unicating with you about his speci#ic re.uire&ents#or the regional o##ices: In addition, $d Meadows, yourboss in IT, has visited so&e o# the branch o##ices

Eou are ready to deploy the selected networ% co&ponentsFhowever, #irst you &ust deter&ine a wiring plan #or eachbranch


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ab Review

In the lab, you were as%ed to consider a wiring sche&e #orbranch o##ices: Eou were constrained by budget: Had younot been, how would that have changed your plans, i# atall4


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Module Review and Ta%eaways

Review 8uestions

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