CiscoNX-OSSoftwaresupportsSNMPv1，SNMPv2c，andSNMPv3.BothSNMPv1andSNMPv2cuseacommunity-basedformofsecurity.SNMPv3providessecureaccesstodevicesbyacombinationofauthenticatingandencryptingframesoverthenetwork.WhichsecurityfeaturesareprovidedinCiscoNX-OSSNMPv3？（）A. encryption—scrambles the packet contents to prevent them from being seen by unauthorized sourcesB. password—a password （community string） sent in clear text between a manager and agent for added protectionC. authentication—determines that the message is from a valid sourceD. message integrity—ensures that a packet has not been tampered with while it was in transit E. user—to determine if user authentication is used instead of community strings

多项选择题

Cisco NX-OS Software supports SNMPv1， SNMPv2c， and SNMPv3. Both SNMPv1 and SNMPv2c use a community-based form of security. SNMPv3 provides secure access to devices by a combination of authenticating and encrypting frames over the network. Which security features are provided in Cisco NX-OS SNMPv3？（）

A. encryption—scrambles the packet contents to prevent them from being seen by unauthorized sources
B. password—a password （community string） sent in clear text between a manager and agent for added protection
C. authentication—determines that the message is from a valid source
D. message integrity—ensures that a packet has not been tampered with while it was in transit
E. user—to determine if user authentication is used instead of community strings

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