SNMPv2 Authentication Types

D

NEW QUESTION NO: 278

The correct answer is D. community strings.

Simple Network Management Protocol version 2 (SNMPv2) uses community strings as its authentication method. SNMPv2 is a protocol used for managing and monitoring network devices, such as routers, switches, and servers. It operates by sending SNMP messages between a management station and SNMP agents on network devices.

A community string is a text string used as a password to control access to SNMP network management information. It is sent in clear text format, so it is not considered a secure method of authentication. Community strings are used to identify the level of access that is granted to SNMP agents. There are two types of community strings:

1. Read-only: grants read-only access to SNMP management information.
2. Read-write: grants read and write access to SNMP management information.

SNMPv2 also supports SNMPv1 community strings for backward compatibility. However, SNMPv1 community strings only support read-only access.

HMAC-MD5 and HMAC-SHA are authentication types used by SNMPv3, which is the most secure version of SNMP. HMAC-MD5 uses the MD5 algorithm to generate a message digest, while HMAC-SHA uses the SHA-1 algorithm to generate a message digest. CBC-DES is a type of encryption used by SNMPv3 to secure SNMP messages.