Certificacion windows server
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Transcript of 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 "<iple ports
Pro+i#es $or a #e%ree o$ $a< 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< $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