单选题Which statement about SNMP is true？（）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 withCProxy 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 to the SNMP version 1 agent.
单选题
Which statement about SNMP is true？（）
A
SNMP version 2 uses a proxy agent to forward GetNext message to SNMP version 3.
B
SNMP version 2 supports message integrity to ensure that a packet has not been tampered with
C
Proxy agents were used only in SNMP version 1.
D
SNMP version 3 supports encryption and SNMP version 2 support authentication.
E
GetBulk messages are converted to GetNext messages by the proxy agent and are then forwarded to the SNMP version 1 agent.
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