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1Assystemadministrator,youtypendebugipxsapnandreceive
thefollowinglinesaspartoftheIOSresponse:type0x4,
''HELLO2'',199.0002.0003.0006(451),2hopstype0x4,
HHELLOr\199.0002.0003.0008(451),2hopsWhatdoesn0x4H
signify?
A.ThatisaGetNearestServerresponse.
B.ThatitisaGeneralquery.
C.ThatitisaGeneralresponse.
D.ThatitisaGetNearestServerrequest.
2TomonitorIPigrptraffic,youcanuse"debugIPigrp
transactionMor"debugIPigrpevents”.Howdoyoudisplay
informationaboutIPXroutingupdatepackets?
A.debugrouting
B.debugipxtransaction
C.debugipxroutingactivity
D.debugipxevents
3Tomonitoripxtrafficonanetwork,whatcommandwouldyouuse?
A.debugipxtransaction
B.showipxtraffic
C.showipxevents
D.displayipxtraffic
AnsB
4WhatcommandwouldyouusetofindoutthenamesofNovellservers
onanetwork?
A.showipxserversB.showipxhosts
C.showipxsap
D.showipxnodes.
5Thenipxdelaynumber"commandwillallowanadministratortochangethe
default
settings.Whatarethedefaultsettings?
A.ForLANinterfaces,onetick;forWANinterfaces,sixticks
B.ForLANinterfaces,sixticks;forWANinterfaces,onetick
C.ForLANinterfaces,zeroticks;forWANinterfaces,fiveticks
D.ForLANinterfaces,fiveticks;forWANinterfaces,zeroTicks
AnsAThedefaultis-forLANinterfaces,onetick;forWANinterfaces,sixticks
6Asasystemadministrator,youneedtosetuponeEthernet
interfaceontheCiscoroutertoallowforbothsapandNovell-ether
encapsulations.Whichsetofcommandswillaccomplishthis?
A.interfaceethernet0.1ipxencapsulationNovell-etheripxnetwork9einterface
ethemet
0.2ipxnetwork6c
B.interfaceethernet0ipxencapsulationNovell-etheripxnetwork9einterface
ethernet0
ipxencapsulationsapipxnetwork6c
C.interfaceethernet0.1ipx
encapsulationNovell-etherinterface
ethernet0.2ipxencapsulationsap
D.interfaceethernet0.1ipx
encapsulationNovell-etheripx
network9einterfaceethernet0.2ipx
encapsulationsapipxnetwork6c
AnsD
Thefollowingcommandssetupthesubinterfacestoallowfortwotypesof
encapsulation:
interfaceethernet0.1ipxencapsulationNovell-etheripxnetwork9einterfaceetheme
0.2
ipxencapsulationsapipxnetwork6c
7Whatdoesthe“IPXmaximum-paths2ncommandaccomplish?
A.Itenablesloadsharingon2pathsifthepathsareequalmetric
paths.
B.Itsetsuproutingtogotonetwork2.
C.ItisthedefaultforCiscoIPXloadsharing.
D.Itenablesloadsharingon2pathsifthepathsare
unequalmetricpaths.
AnsAItenablesloadsharingon2pathsifthepathsareequalmetricpaths.The
defaultis1
pathandthemaximumis512paths.
8Youwanttoenablebotharpaandsnapencapsulationononerouter
interface.Howdoyoudothis?
A.Theinterfacecanhandlemultipleencapsulationtypeswithno
extraconfiguration.
B.Assigntwonetworknumbers,oneforeachencapsulationtype.
C.EnableNovell-ethertorunmultipleencapsulationtypes.
D.Botharpaandsnapareenabledbydefaultsoyoudon'thaveto
configureanything.
AnsBToassignmultiplenetworknumbers,youusuallyusesubinterfaces.Asample
configurationfollows:ipxethernet0.1ipxencapsulationnovell-etheripxnetwork9e
interfaceethernet0.2ipxencapsulationsapipxnetwork6c
8Bydefault,CiscoroutersforwardGNSSAPstoremotenetworks.
A.False
B.True
AnsA
GNSisNovell'sprotocoltoGetNearestServer.Ifthereisaserveronthelocal
network,that
serverwillrespond.Ifthereisnft,theCiscorouterhastobeconfiguredtoforwardthe
CAp
9TopreventServiceAdvertisements(SAPs)fromfloodinga
network,Ciscoroutersdonotforwardthem.Howareservices
advertisedtoothernetworks?
A.EachrouterbuildsitsownSAPtableandforwardsthatevery
60seconds.
B.Eachrouterassignsaservicenumberandbroadcaststhat.
C.SAPsaren*tnecessarywithCiscorouters.
D.CiscoroutersfilteroutallSAPs.
Ans:ACiscoroutersbuildSAPtablesandforwardthetableevery60seconds.All
SAPs
can'tbefilteredevenwith4.xsinceNDSandtimesynchronizationusesSAPs.
10NovelFsimplementationofRIPupdatesroutingtablesevery
seconds.
A.60
B.90
C.10
D.30
AnsANovell'sRIPupdatesroutingtablesevery60seconds,Apple'sRTMPisevery
i八
seconds,routersARPevery60seconds,IGRPsignalevery90seconds,andBanyan
VINES
signalsevery90seconds.
11InNovell'suseofRIP,therearetwometricsusedtomakerouting
decisions.Selectthetwometrics.
A.Ticks.
B.Hops
C.Loops
D.Counts
Ans:A&BItfirstusesticks(whichisabout1/18sec.);ifthereisatie,ituseshops;if
areequal,thenitusesanadministrativelyassignedtiebreaker.
12WhatistheCisconamefortheencapsulationtypeusedonaserial
interface?
A.HDLC
B.SDLC
C.SAP
D.SNAP
13narpanisusedbytheCiscoIOSforwhichencapsulationtypes?
A.Ethernet_II
B.Ethernet_802.3
C.Ethemet_802.2
D.Ethernet_SNAP
AnsANovelFsIPXandCisco'sIOSnametheirprotocolsdifferently.Ciscousessap
for
Ethernet_802.2,Token-Ring,andNovell'sFDDI_802.2.Ciscousessn叩for
Ethernet_SNAP,Token-Ring_SNAP?andFDDI_SNAP.Ciscousesarpafor
Ethernet_II
and,finallytliedefaultisNovell-etherforNovell'sEthernet_802.3.
14''snap''isusedbytheCiscoIOSforwhichencapsulationtypes?
A.Ethernet_SNAP
B.Token-Ring_SNAP
C.FDDI_SNAP
D.Novell-SNAP
E.Novell-FDDI.
Ans:A.B&CNovelFsIPXandCisco*sIOSnametheirprotocolsdifferently.Cisco
usessap
forEthernet_802.2,Token-Ring,andNovelFsFDDT_802.2.Ciscousessnapfor
Ethernet_SNAP,Token-Ring_SNAP,andFDDI_SNAP.Ciscousesarpafor
Ethernet_II
and,finallythedefaultisNovell-etherforNovell'sEthernet_802.3.
15nsapnisusedbytheCiscoIOSforwhichencapsulationtypes?
A.Ethernet_802.2
B.Token-Ring
C.FDDI_SNAP
D.Ethernet_802.3
E.FDDI_802.2
AnsA,B&E
NovelFsIPXandCisco'sIOSnametheirprotocolsdifferently.Ciscousessapfor
Ethernet_802.2,Token-Ring,andNovell'sFDDI_802.2.Ciscousessnapfor
Ethernet_SNAP,Token-Ring_SNAP,andFDD1_SNAP.Ciscousesarpafor
Ethernet_II
and,finallythedefaultisNovell-etherforNovell'sEthemet_802.3.
16WhichtypeofEthernetframingisusedforTCP/IPand
AppleTalk?
A.Ethernet802.3
B.Ethernet802.2
C.EthernetII
D.EthernetSNAP
AnsDEthernet802.3isusedwithNetWareversions2through3.11,Ethernet802.2is
used
withNetWare3.12andlaterplusOSIrouting,EthernetIIisusedwithTCP/IPand
DECnet,
andEthernetSNAPisusedwithTCP/IPandAppleTalk.
17WhichtypeofEthernetframingisusedforTCP/IPand
DECnet?
A.Ethernet802.3
B.Ethernet802.2
C.EthernetII
D.EthernetSNAP
Ans:CEthernet802.3isusedwithNetWareversions2through3.11,Ethernet802.2
isused
withNetWai'e3.12andlaterplusOSIrouting,EthernetIIisusedwithTCP/IPand
DECnet,
andEthernetSNAPisusedwithTCP/IPandAppleTalk.
18YouareasystemadministratoronaNetWarenetwork,youare
runningNetWare4.11andyoucannotcommunicatewithyourrouter.
Whatisthelikelyproblem?
A.NetWare4.11defaultsto802.2encapsulation.
B.NetWare4.11defaultsto802.3encapsulation
C.CiscoroutersonlyworkwithNetWare3.11.
D.NetWare3.11defaultsto802.2encapsulation.
AnsAThedefaultencapsulationonCiscoroutersisNovellEthernet_802.3and
NetWare
3.12andlaterdefaultsto
802.2encapsulation,3.11andearlierdefaultsto802.3.
19NetWareIPXaddressingusesanetworknumberandanode
number.Whichstatementsaretrue?
A.Thenetworkaddressisadministrativelyassignedandcanbeup
to16hexadecimaldigitslong.
B.Thenodeaddressisalwaysadministrativelyassigned.
C.ThenodeaddressisusuallytheMACaddress.
D.IftheMACaddressisusedasthenodeaddress,thenIPX
eliminatestheuseofARP.
AnsA,C&D
Thenetworkaddresscanbeupto16hexadecimaldigitsinlength.Thenodenumber
is12
hexadecimaldigits.ThenodeaddressisusuallytheMACaddress.AnexampleIPX
address
is4a1d.0000.0c56.de33.Thenetworkpartis4ald.Thenodepartis0000.0c56.de33.
The
networknumberisassignedbythesystemadministratoroftheNovellnetwork.
20WhichNetWareprotocolworksonlayer3-networklayer-ofthe
OSImodel?
A.IPX
B.NCP
C.SPX
D.NetBIOS
AnsAIPX(InternetworkPacketExchange)isaNetWarenetworklayer3protocol
;edfor
transferringinformationonLANs.
21WhichNetWareprotocolprovideslink-staterouting?
A.NLSPB.RIP
C.SAP
D.NCP
Ans:A
NetWai'eLinkServicesProtocol(NLSP)provideslink-staterouting.
SAP(ServiceAdvertisementProtocol)advertisesnetworkservices.
NCP(NetWareCoreProtocol)providesclient-to-server
connectionsandapplications.RIPisadistancevectorrouting
protocol.
22Asasystemadministrator,youwanttodebugigrpbutare
worriedthatthe“debugIPigrptransaction0commandwillflood
theconsole.Whatisthecommandthatyoushoulduse?
A.debugIPigrpevent
B.debugIPigrp-events
C.debugIPigrpsummary
D.debugIPigrpevents
AnsDThe"debugIPigrpevents"isusedtoonlydisplayasummaryofIGRProuting
information.YoucanappendanIPaddressontoeithercommandtoseeonlythe
IGRP
updatesfromaneighbor.
23Whatdoesthefollowingseriesofcommandsaccomplish?
routerigrp71network
routerigrp109
network
A.Itisolatesnetworksand.
B.Itloadsigrpfornetworks109and71.
C.ItdisablesRIP.
D.Itdisablesallroutingprotocols.
AnsAItisolatesnetworkandandassociatesautonomoussystems
109
and71withIGRP.IGRPdoesnotdisableRIP.bothcanbeusedatthesametime.
24Inthecommandnrouterigrp109"whatdoes109signify?
A.anautonomoussystem
B.anynetworknumberwhichtherouterisattachedtoC.theallowablelengthofthe
routingtable
D.thenetworksocketnumber
AnsATheCiscoIOSglobalconfigurationcommand"routerigrpxxx°isusedto
configure
theInteriorGatewayRoutingProtocol.Inthiscase,the109iscalledtheprocess-id,
which
canalsobeusedforanautonomoussystemnumber.
25IGRPsupportsafeaturethatallowstraffictobe
distributedamongupto6(4default)pathstoprovidegreater
overallthroughputandreliability.Whatisthiscalled?
A.unequal-costloadbalancing
B.equal-costloadbalancing
C.proportionateloadbalancing
D.lowcostloadbalancing
AnsAAnunequal-costloadbalancingisusedtoprovidealternatepathsfordata
distributiononaninternetwork.Ciscodevelopedthismethodtouseunusedorunder
utilizedlinkstoincreasebandwidthandnetworkavailability.
26IGRPusesflashupdates,poisonreverseupdates,holddowntimes,
andsplithorizon.Howoftendoesitbroadcastitsroutingtable
updates?
A.90seconds
B.10seconds
C.30seconds
D.45seconds
AnsA
27ThecommandnshowIPprotocolndisplayswhichinformation?
A.routingtimers
B.networkinformation
C.contentsoftheIProutingtable
D.informationaboutallknownnetworkandsubnetworks
AnsA&B
"showIPprotocol"displaysroutingtimersandnetwork
information.nshowIProute"displaystheroutingtablewith
informationaboutallknownnetworksandsubnetworks.
28WhenusingRIP,routingupdatesarebroadcastevery
seconds.
A.30
B.10
C.60
D.90
Ans:ANovell'sRIPupdatesroutingtablesevery60seconds,Apple'sRTMPisevery
10
seconds,routersARPevery60seconds,DECnethostsandIGRPsignalevery15
seconds,
andBanyanVINESsignalsevery90seconds.
29Anautonomoussystemcanonlyexistifallroutersinthatsystem
meetwhichcriteria?
A.interconnected
B.runthesameroutingprotocol
C.assignedsameautonomoussystemnumber
D.runIGRPonly
E.runRIPonly
AnsA,B&CAnautonomoussystemisasetofroutersandnetworksunderthesame
administration.Eachroutermustbeinterconnected,runthesameroutingprotocol,
and
assignedthesameautonomoussystemnumber.ThenetworkInformationCenter
(NIC)
assignsauniqueautonomoussystemnumbertoenterprises.
30Adefaultrouteisanalogoustoa.
A.defaultgateway
B.staticroute
C.dynamicroute
D.one-wayroute
Ans:AAdefaultrouteisanalogoustoadefaultgateway.Itisusedtoreducethe
lengthof
routingtablesandtoprovidecompleteroutingcapabilitieswhenaroutermightnot
know
theroutestoallothernetworks.
31Routerscanlearnaboutdestinationsthroughstaticroutes,default,
ordynamicrouting.Bydefault,arouterwilluseinformationderived
from,
A.IGRP
B.RIP
C.IP
D.TCP
AnsAThequalityofinformationisrated:Connectedinterface0Staticroute1IGRP
100
RIP120Unknown255Thelowerthevalue,themorereliablethesourcewith255
signifyinginfonnationthattherouterwillignore.So,therouterwilluseIGRP,rated
aiiuu,
beforeIP,ratedal
120.
32Youareloggedintoarouter,whatcommandwouldshow
youtheIPaddressesofroutersconnectedtoyou?
A.showcdpneighborsdetail
B.showrun
C.showneighbors
D.showcdp
AnsA
33Asasystemadministrator,youperformanextendedpingatthe
privilegedEXECprompt.Aspartofthedisplay,youseenSetDFbit
inIPheader?[yes]:nWhatwouldhappenifyouanswerednoatthe
prompt.
A.Thisletstherouterfragmentthepacket.
B.Ittellstherouternottofragmentthepacket.
C.Thisletstherouterdirectthepackettothedestinationitfinds
initsroutingtable.
D.Ittelltheroutertosendthepackettothenexthoprouter.
AnsA"SetDFbitinIPheader?”isaresponsetoanextendedpingattherouter.If
you
answeryes(thedefault)therouterwillnotfragmentthepacket.Ifyouanswerno,the
router
willfragmentthepacket.
34Youhavetyped"ping”andgetthefollowingdisplay:Type
escape
sequencetoabort.Sending5,100-byteICMPEchoesto,
timeoutis2seconds:
!!!!
Whatdoesthesignify?
A.Thatonemessagetimedout.
B.Thatallmessagesweresuccessful.
C.Thatonemessagewassuccessful.
D.Thatonemessagecompletedinundertheallotted
timeframe.
AnsA
Thepossibleresponsesfromthepingcoinmandare:
!Successfulreceiptofanechoreply..Timed
outwaitingforareplyUDestination
unreachableCCongestion-experienced
packetIPinginteiTupted?Packettype
unknown&PacketTTLexceeded
35Whichcommand,thatisusedtotestaddressconfiguration,uses
Time-To-Live(TTL)valuestogeneratemessagesfromeachrouter.
A.trace
B.ping
C.telnet
D.bootp
Ans:ATheCiscoIOSEXECcommandntrace[protocol][destination]"isusedto
discover
routesthatpacketswilltraveltotheirdestinationhosts.TraceusesTTL(Timeto
Live)
valuestoreportdestinationrouteinformation.
36Whatdoesthecominand“IPname-server55”
accomplish?
A.Itsetsthedomainnamelookuptobealocalbroadcast.
B.Thisisanillegalcommand.
C.Itdisablesdomainnamelookup.
D.Thecommandisnowdefunctandhasbeenreplacedby"IP
server-nameipany”
AnsABydefaultDNSisenabledonarouterwithaserveraddressof
55.
whichprovidesforalocalbroadcast.
37Asasystemadministrator,youneedtoprovideyourrouterswithaDomain
Name
System(DNS)server.HowmanyDNSserverscanyouspecifywithone
command?
A.6
B.1
C.2
D.4
AnsAYoucanonlyspecifysixnameserversinonecommand.Thesyntaxis"IP
name-serverserver-address1[[server-address2]...server-address6].Youmustalso
enable
DNS.
38HowwouldyouconfigureonehostnamethatpointstotwoIP
addresses?
A.IPhostjacob
B.IPjacob
C.IPhostjacob
D.IPhostduplicate"all”
AnsAThecorrectsyntaxisIPhostname[TCP-port-number]address[address]
So,
nIPhostP1R11.0,0.5"isthecorrectchoice.nIPhostjacob"only
pointsthe
hostnamejacobtooneIPaddress-.
39Thefollowingselectionsshowthecommandpromptandtheconfigurationof
theIP
networkmask.Whichtwoarecorrect?
A.Router#termIPnetmask-format{bitcountIdecimalIhexadecimal}
B.Router(config-if)#IPnetmask-format{bitcountIdecimalIhexadecimal}
C.Router(config-if)#netmask-format{bitcountIdecimalIhexadecimal}
D.Router#ipnetmask-format{bitcountIdecimalIhexadecimal}
AnsA&BRouter#termIPnetmask-fonnat{bitcountIdecimalIhexadecimal}and
Router(config-if)#IPnetmask-format{bitcountIdecimalIhexadecimal}arecorrect.
canconfigurethemaskforthecurrentsessionandyoucanconfigureitforaspecific
line.
40WhenconfiguringthesubnetmaskforanIPaddress,which
formatscanbeused?A.dotted-decimal.
B.HexadecimalC.Bit-count
D.Octal
E.Binary
41Youaregiventhefollowingaddress:7/25.Determine
thesubnetmask,addressclass,subnetaddress,andbroadcast
address.
A.255.255.255,128,B,,27
B.28,C,,27
C.28,C,27,
D.24,C,,27
42Youaregiventhefollowingaddress:3/30.
Determinethesubnetmask,addressclass,subnetaddress,and
broadcastaddress.
A.52,B,2,5
B.52,C,2,5
C.52,B,5,2
D.48,B,2,5
AnsA
43Youaregiventhefollowingaddress:/21.Determine
thesubnetmask,addressclass,subnetaddress,andbroadcast
address.
A.,A,,55
B.,B,,55
C.,A,55,
D.,A,,55
44YouhaveanIPhostaddressof21andasubnetmask
of48.Whatisthebroadcastaddress?
A.27
B.20
C.21
D.22
AnsATheeasiestwaytocalculatethisistosubtract
48(subnetmask)from55,thisequals7.Convertthe
address
21tobinai-y-11001001110111100000010101111001.Convertthemask
48tobinary-11111111111111111111111111111000.ANDthem
togethertoget:11001001110111100000010101111000or20.
20
isthesubnetaddress,add7tothisaddressfor27orthebroadcastaddress.
21through26arethevalidhostaddresses.
45Giventheaddress20andthesubnetmaskof
.Howmanyhostsareavailable?
A.254
B.510
C.126
D.16,372
AnsA
172.16.2120isastandardClassBaddresswithasubnetmaskthatallows254hosts.
You
areanetworkadministratorandhavebeenassignedtheIPaddressof.
You
needtohave20subnetswith5hostspersubnet.Thesubnetmaskis48.
46Whichaddressesarevalidhostaddresses?
A.7
B.8
C.6
D.9
E.1
AnsA,B&DSubnetaddressesinthissituationareallinmultiplesof8.Inthis
example,
6isthesubnet,1isthebroadcastaddress.Therestarevalid
hostIDs
onsubnet6.
47YouareanetworkadministratorandhavebeenassignedtheIP
addressof.Youneedtohave20subnetswith5hostsper
subnet.Whatsubnetmaskwillyouuse?
A.48
B.28
C.92
D.40
AnsAByborrowing5bitsfromthelastoctet,youcan.have30subnets.Ifyou
borrowed
only4bitsyoucouldonlyhave14subnets.Theformulais(2tothepowerofn)-2.By
bon*owing4bits,youhave(2x2x2x2)-2=14.Byborrowing5bits,youhave
(2x2x2x2x2)-2=30.Toget20subnets,youwouldneedtoborrow5bitssothesubnet
mask
wouldbe
48.
48YouaregiventheIPaddressof60withasubnetmask
of.Whatisthenetworkaddressinbinary?
A.1010110000010000
B.0000001010100000
C.1010110000000000
D.1110000011110000
Ans:ATofindthenetworkaddress,converttheIPaddresstobinary-10101100
0001000000000001010100000-thenANDeditwiththesubnetmask-11111111
111111110000000000000000.Therestis10101100000100000000000000000000,
whichisindecimal.Thefirstoctetrulestatesthattheclassofanaddress
canbe
deteiTninedbythenumericalvalueofthefirstoctet.
49WhichaddressesareINCORRECTLYpairedwiththeirclass?
A.128to191,ClassB
B.192to223ClassB
C.128to191,ClassC
D.192to223,ClassC
AnsB&CAddressclassesare:1to126,ClassA;128to191,ClassB,192to223,
224to239.ClassD;and240to255,ClassE.Thefirstoctetrulestatesthattheclass
ofan
addresscanbedeterminedbythenumericalvalueofthefirstoctet.
50WhichaddressesareINCORRECTLYpairedwiththeirclass?
A.1to126,ClassA
B.128to191,ClassA
C.1to126,ClassB
D.128to191,ClassB
Ans:B&C.Addressclassesare:1to126,ClassA;128to191,ClassB,192to223,
,ClassD;and240to255.ClassE.Thefirstoctetrulestatesthatthe
anaddresscanbedeterminedbythenumericalvalueofthefirstoctet.
51WhichaddressesareINCORRECTLYpairedwiththeirclass?
A.240-255,ClassD
B.240-255,ClassE
C.224-239,ClassD
D.224-239,ClassE
AnsA&DAddressclassesare:1to126,ClassA;128to191,ClassI
224to239,ClassD;and240to255,ClassE.
52WhichIPAddressClassisINCORRECTLYpairedwithitsrangeof
networknumbers?
A.ClassAaddressesincludethrough
B.ClassAaddressesincludethrough
C.ClassBaddressesincludethrough
D.ClassCaddressesincludethrough
E.ClassDaddressesincludethrough
AnsAClassAaddressesincludethrough
ClassBaddressesincludethroughClassCaddresses
includethroughClassDaddressesincludethrough
53WhichIPAddressClasscanhave16millionsubnetsbut
support254hosts?
A.ClassC
B.ClassA
C.ClassB
D.ClassD
AnsAPossibleSubnetsIPAddressClassPossibleHosts254A16M.64KB64K
16MC
254
54WhichIPAddressClasscanhave64,000subnetswith64,000hosts
persubnet?
A.ClassBB.ClassA
C.ClassC
D.ClassD
AnsAIPAddressClassPossibleSubnetsPossibleHosts254AI6M64KB64K
16MC
254
55TherearetwoprocessestopairMACaddresswithIP
addresses.WhichprocessfindsanIPaddressfromaMAC
address?
A.RARP
B.ARP
C.RIP
D.IGRP
AnsAARP(AddressResolutionProtocol)mapsanIPaddresstotheMACaddress,
RARP
(ReverseAddressResolutionProtocol)mapstheMACaddresstotheIPaddress.ARP
and
RARPworkattheinternetlayeroftheInternetModelorthenetworklayeroftheOSI
model.
56Whentherouterrunsoutofbufferspace,thisiscalled
A.SourceQuench
B.Redirect
C.InformationRequest
D.LowMemory
AnsASourcequenchistheprocesswherethedestinationrouter,orend
internetworking
devicewill"quench"thedatefromthe"source",orthesourcerouter.Thisusually
happens
whenthedestinationrouterrunsoutofbufferspacetoprocesspackets.
57WhichprotocolcarriesmessagessuchasdestinationUnreachable,
TimeExceeded,ParameterProblem,SourceQuench,Redirect,Echo,
EchoReply,Timestamp,InformationRequest,InformationReply,
AddressRequest,andAddressReply?
A.ICMP
B.UDP
C.TCP
D.TFTP
E.FTP
AnsAICMP(InternetControlMessageProtocol)isanetworklayerinternetprotocol
describedinRFC#792.ICMPreportsIPpacketinfomiationsuchasdestination
Unreachable,TimeExceeded,ParameterProblem,SourceQuench,Redirect,Echo,
Echo
Reply,Timestamp,InformationRequest,InformationReply,AddressRequest,and
Address
Reply.
58TwooftheprotocolsthatcanbecarriedintheProtocolfieldof
anIPpacketare?
A.TCP
B.UDP
C.FTP
D.TFTP
AnsA&BThefollowingaretliefieldsinanIPsegment,theirlength,andtheir
definitions:
VERS(Versionnumber-16bits)HLEN(Numberof32-bitwordsintheheader-4
bits)
TypeofServer(Howthedatagramshouldbehandled-32bits)TotalLength(Total
length
ofheaderanddata-32bits)Identification(Providefragmentationofdatagramsto
allow
differentMTUsintheinternet-4bits)Flags(Providefragmentationofdatagramsto
allow
differentMTUsintheinternet-4bits)FragOffset(Providefragmentationof
datagramsto
allowdifferentMTUsintheinteniet-6bits)TTL(Time-To-Live-6bits)Protocol
(Upperlayerprotocolsendingthedatagram-16bits)HeaderChecksum)Integrity
checkon
theheader-16bits)SourceIPAddress(32bits)DestinationIPAddress(32bits)IP
Options(networktesting,debugging,securityandothers
-4bits)Data(4bits).
59WherewouldnetworktestingbeincludedinanIPpacket?
A.IPOptionsfieldB.Identificationfield
C.TypeofServicefield
D.Reservationfield
AnsAThefollowingarethefieldsinanIPsegment,theirlength,andtheir
definitions:
VERS(Versionnumber-16bits)HLEN(Numberof32-bitwordsintheheader-4
bits)
TypeofServer(Howthedatagramshouldbehandled-32bits)TotalLength(Total
length
ofheaderanddata-32bits)Identification(Providefragmentationofdatagramsto
allow
differentMTUsintheinternet-4bits)Flags(Providefragmentationofdatagramsto
allow
differentMTUsintheinternet-4bits)FragOffset(Providefragmentationof
datagramsto
allowdifferentMTUsintheinternet-6bits)TTL(Time-To-Live-6bits)Protocol
(Upperlayerprotocolsendingthedatagram-16bits)HeaderChecksum)Integrity
checkon
theheader-16bits)SourceIPAddress(32bits)DestinationIPAddress(32bits)IP
Options(networktesting,debugging,securityandothers
-4bits)Data(4bits).
60WhatfieldtellstheInternetlayerhowtohandleanIPpacket?
A.TypeofService
B.Identification
C.Flags
D.FragOffset
AnsAThefollowingarethefieldsinanIPsegment,theirlength,andtheir
definitions:
VERS(Versionnumber-16bits)HLEN(Numberof32-bitwordsintheheader-4
bits)
TypeofSei*ver(Howthedatagramshouldbehandled-32bits)TotalLength(Total
length
ofheaderanddata-32bits)Identification(Providefragmentationofdatagramsto
allow
differentMTUsintheinternet-4bits)Flags(Providefragmentationofdatagramsto
allow
differentMTUsintheinternet-4bits)FragOffset(Providefragmentationof
datagramsto
allowdifferentMTUsin由einternet-6bits)TTL(Time-To-Live-6bits)Protocol
(Upperlayerprotocolsendingtliedatagram-16bits)HeaderChecksum)Integrity
checkon
theheader-16bits)SourceIPAddress(32bits)
DestinationIPAddress(32bits)
IPOptions(networktesting,debugging,securityandothers
-4bits)Data(4bits).
61WhichfieldsofanIPpacketprovideforfragmentationof
datagramstoallowdifferingMTUsintheinternet?
A.Identification
B.Flags
C.FragOffset
D.TypeofService
E.TotalLength
AnsA,B&CThefollowingarethefieldsinanIPsegment,theirlength,andtheir
definitions:VERS(Versionnumber-16bits)HLEN(Numberof32-bitwordsinthe
header
-4bits)TypeofServer(Howthedatagramshouldbehandled-32bits)TotalLength
(Total
lengthofheaderanddata-32bits)Identification(Providefragmentationofdatagrams
to
allowdifferentMTUsintheinternet-4bits)Flags(Providefragmentationof
datagramsto
allowdifferentMTUsintheinternet-4bits)FragOffset(Providefragmentationof
datagramstoallowdifferentMTUsintheinternet-6bits)TTL(Time-To-Live-6
bits)
Protocol(Upper!ayerprotocolsendingthedatagram-16bits)Header
Checksum)lntegrity
checkontheheader-16bits)SourceIPAddress(32bits)
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