WhichthreeapproachescanbeusedwhilemigratingfromanIPV4addressingschemetoanIPV6scheme？（）
A. staticallymapIPV4addresstoIPV6addresses
B. configurationIPv4tunnelsbetweenIPV6islands
C. useDHCPv6tomapIPV4addressestoIPV6addresses
D. useproxyingandtranslationtotranslateIPV6packetsintoIPV4packets
E. configureIPV6directly
F. enabledual-stackrouting
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Whatinformationdoesarouterrunningalink-stateprotocolusetobuildandmaintainitstopologicaldatabase？（）
A. hellopackets
B. SAPmessagessentbyotherrouters
C. LSAsfromotherrouters
D. beaconsreceivedonpoint-to-pointlinks
E. routingtablesreceivedfromotherlink-staterouters
F. TTLpacketsfromdesignatedrouters
下列哪些是散列函数（）
A. MD5
B. RSA
C. HMAC
D. SHA-1
AciscorouterisbootingandhasjustcompletedthePOSTprocess.Itisnowreadytofindandloadan IOS image.whatfunctiondoestherouterperformnext？（）
A. Itcheckstheconfigurationregister
B. ItattemptstobootfromaTFTPserver
C. Itloadsthefirstimagefileinflashmemory
D. ItinspectstheconfigurationfileinNVRAMforbootinstructions
Forsecurityreasons,thenetworkadministratorneedstopreventpingsintothecorporatenetworksfromhostsoutsidetheinternetwork.Whichprotocolshouldbeblockedwithaccesscontrollists？（）
A. IP
B. ICMP
C. TCP
D. UDP
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