SNMPv3authorizesmanagementoperationsonlybyconfiguredusersandencryptsSNMPmessages.WhichauthenticationprotocolsdoesCiscoNX-OSSoftwareuseforSNMPv3？（）
A. NMAC-SHA-96authenticationprotocol
B. HMAC-MD5-96authenticationprotocol
CommunityStringMatchprotocol
D. NMAC-MD5-96authenticationprotocol
E. HMAC-SHA-96authenticationprotocol
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Whichonesarethetwotypeofciphers？（）
A. Blockingcipherandnon-blockingcipher
B. CBCcipherandEBCcipher
C. BlockcipherandStreamcipher
D. BlockercipherandStreamercipher
E. 3DEScipherandAEScipher
WhichSSLprotocoltakesanapplicationmessagetobetransmitted，fragmentsthedataintomanageableblocks，optionallycompressesthedata，appliesaMAC，encrypts，addsaheader，andtransmitstheresultingunitinaTCPsegment？（）
A. SSLHandshakeProtocol
B. SSLAlertProtocol
C. SSLRecordProtocol
D. SSLChangeCipherSpecProtocol
ForaroutertoobtainacertificatefromaCA，whatisthefirststepofthecertificateenrollmentprocess？（）
A. theroutergeneratesacertificaterequestandforwardsittotheCA
B. theroutergeneratesanRSAkeypair
C. theroutersendsitspublickeytotheCA
D. theCAsendsitspublickeytotherouter
E. theCAverifiestheidentityoftherouter
F. theCAgeneratesacertificaterequestandforwardsittotherouter
WhatistheportnumberofanIPsecEncapsulatingSecurityPayloadpacket？（）
A. IPprotocol50
B. IPprotocol51
C. TCPport50
D. TCPport51
E. UDPport50
F. UDPport51
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