思科认证是由网络领域著名的厂商--Cisco公司推出的。是互联网领域的国际权威认证。思科认证有CCNA、CCDA、CCNP、CCDP、CCSP、CCIP、CCVP、CCIE(又分为针对路由和交换;语音;存储网络;安全;电信运营商)等多种不同级别、不同内容、不同方向的各种认证。
下面一起来看看思科认证的考试题库吧!
Belowarequestions1-19.Toseeanexplanationforeachquestion,pleaserefertotheexplanationlinkbelowthequestionorselectexplanationsonthenavigationbartotheleft.
Questions
1.[OxNx]DuringaTFTPtransferusingCiscoRouterswhatisthenumericvalue,indecimal,ofthedestinationportfieldoftheUserDatagramProtocol(UDP)header
a)96
b)47
c)arandomnumberabove1024
d)69
e)noneoftheabove
2.[CxNx]WhatisthestandardencapsulationmethodusedbyCiscoroutersfortheInternetProtocol(IP)onit’sEthernetinterfaces
a)SNAP
b)ARPA
c)NOVELL-ETHER
d)DARPA
e)Ethernet_802.3
3.[CxNx]WhatwillbethecorrectcommandonaCiscoroutertosettheIPaddressofaninterfaceassumingyouareatthe"router(config-if)#"prompt
a)ipaddress1.1.1.1255.255.255.0
b)ipaddress1.1.1.1
c)ip1.1.1.1
d)ip1.1.1.1255.255.255.0
4.[CxNx]WhichcommandswilldisplaytheIPaddressesofallinterfacesonaCiscoRouter(Chooseallthatapply)
a)showiproute
b)showipaddress
c)showipinterface
d)showinterface
e)displayipaddresses
5.[CxNx]WhichofthefollowingcommandswilldisplaythecontentsoftheARPcacheofyourCiscorouter
a)showiparpcache
b)showiproute
c)showiparp
d)showarp
e)thereisnowaytodisplaytheARPcache
6.[CxNx]ReverseAddressResolutionProtocol(RARP)istheprocessUM0-4111T6-530920-1152B0-0242B0-022:
a)WhereanIPhostresolvesit’sIPaddressbybroadcastingit’sMACaddresstothenetworkandaBOOTPserverassignsitanIPaddress.
b)WhereanIPhostresolvesit’sMACaddressbybroadcastingtothelocalnetworkit’sIPaddress.
c)WhereanIPhosttriestoresolvetheMACaddressofadestinationbysendinganetworkbroadcast.Thedestinationrespondstothebroadcastwithit’sMACaddress.
d)WhereanIPhostresolvesadestinationIPaddressbysendingabroadcastonthelocalnetworkandthedestinationhostrespondswithit’sIPaddress.
e)Thereisnosuchprocess.
7.[OxNx]Whichofthefollowingapplicationsrequirestheconnection-orientedlayerfourprotocol,TCP(Chooseallthatapply)
a)Telnet
b)FTP
c)TFTP
d)SNMP
8.[RxNx]WhichofthefollowingarelinkstateRoutingProtocols.
(Chooseallthatapply.)
a)IP
b)OSPF
c)RIP
d)EIGRP
e)IS-IS
9.[CxNx]Ofthefollowingcommands,identifythecorrectoneforclearingtheIParptableinmemoryoftherouters10-1002B0-102190-534HP0-750.
a)cleariparp-cache
b)cleariparp-table
c)cleararp-cache
d)cleararp-table
e)cleararp-ram
10.[CxNx]WhichofthefollowingexplainsthecorrectdefinitionofadministrativedistanceasitpertainstoCisco’sIOSmd0-2519A0-013jn0-541
a)Theprocessbywhichroutersselectanadministratorforanautonomoussystem.
b)Theprocesswherearouterwillselectthebestpathtoadestinationnetwork.
c)Theprocesswherearouterwilldistanceitselffromotherroutersduetoit’slackofadministrativeexperience.
d)Theprocesswherearouterwillprioritizeroutingprotocolssothatintheeventtworoutingprotocolshaveconflictingnexthopaddresses,theroutingprotocolwiththelowestadministrativedistancewilltakepriority.
e)Theprocesswherearouterwillprioritizeroutingprotocolssothatintheeventtworoutingprotocolshaveconflictingnexthopaddresses,theroutingprotocolwiththehighestadministrativedistancewilltakepriority.
11.[ExNx]Collisionsoccurwhen
a)multiplepacketsareplacedonaseriallink
b)multiplestationslistenfortrafficandtransmitatthesametime
c)whenmultipletokensareonaringsimultaneously
d)beaconingprocesstakesplace
12.[RINx]HowmanysubnetsarepossiblewithaClassCaddressandasubnetmaskof255.255.255.252
a)32
b)30
c)60
d)62
e)4
13.[RxNx]Whatcommandswilllistallprotocolsthatarecurrentlybeingrouted(Chooseallthatapply.)
a)showipprotocol
b)showprotocol
c)showrun
d)showstart
e)Alloftheabove
14.[xxNx]Whichofthefollowingaretrueofaccesslists
a)Accesslistshouldhaveatleastonepermitstatement.
b)Thelastconfiguredlineshouldalwaysbeapermitstatement.
c)Everyaccess-listwillimplicitlydenyalltraffic.
d)Access-listsareprocessedtopdown.
e)Alloftheabove.
15.[xxNx]Iftheaccess-groupcommandisconfiguredonaninterfaceandthereisnoaccess-listcreatedwhichofthefollowingismostcorrect
a)Anerrormessagewillappear.
b)Thecommandwillbeexecutedanddenyalltrafficout.
c)Thecommandwillbeexecutedandpermitalltrafficout.
d)Thecommandwillbeexecutedandpermitalltrafficinandout.
e)Thecommandwillbeexecutedanddenyalltrafficinandout.
16.[xxNx]Whatistheresultofthecommand
"access-list101permittcpany172.16.0.00.0.255.255established"
a)telnetsessionswillbepermittedregardlessofthesourceaddress
b)telnetsessionswillbedeniedregardlessofthesourceaddress
c)telnetsessionswillbedeniedifinitiatedfromanyaddressotherthan172.16.0.0network
d)telnetsessionswillbepermittedtothe172.16.0.0networkonly
e)telnetsessionswillbedeniedtothe172.16.0.0networkonly
17.[xxNx]Whichisgenerallytrueofthelocationofaccess-lists(Chooseallthatapply.)
a)Standardlistswillmostlikelybeplacedclosetothedestination.
b)Standardlistswillmostlikelybeplacedclosetothesource.
c)Extendedlistswillmostlikelybeplacedclosetothedestination.
d)Extendedlistswillmostlikelybeplacedclosetothesource.