Which statement about SNMP is true?

Question

Options

• ASNMP version 2 uses a proxy agent to forward GetNext message to SNMP version 3.
• BSNMP version 2 supports message integrity to ensure that a packet has not been tampered with
• CProxy agents were used only in SNMP version 1.
• DSNMP version 3 supports encryption and SNMP version 2 support authentication.
• EGetBulk messages are converted to GetNext messages by the proxy agent and are then forwarded

• A
  4% (2)
• B
  2% (1)
• C
  8% (4)
• D
  2% (1)
• E
  84% (41)

Explanation

A SNMPv2 agent can act as a proxy agent on behalf of SNMPv1 managed devices, as follows: A SNMPv2 NMS issues a command intended for a SNMPv1 agent. The NMS sends the SNMP message to the SNMPv2 proxy agent. The proxy agent forwards Get, GetNext, and Set messages to the SNMPv1 agent unchanged. GetBulk messages are converted by the proxy agent to GetNext messages and then are forwarded to the SNMPv1 agent. The proxy agent maps SNMPv1 trap messages to SNMPv2 trap messages and then forwards them to the NMS. SNMPv3 provides important security features:[11] Confidentiality - Encryption of packets to prevent snooping by an unauthorized source. Integrity - Message integrity to ensure that a packet has not been tampered while in transit including an optional packet replay protection mechanism. Authentication - to verify that the message is from a

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