Which of the following SNMP versions was the first version to offer both authentication and encryption? (Select the best answer.)
Simple Network Management Protocol version 3 (SNMPv3) was the first version to offer both authentication and encryption. Simple Network Management Protocol (SNMP) is used to remotely monitor and manage network devices. SNMP version 1 (SNMPv1) and SNMPv2 use community strings to provide authentication. However, neither SNMPv1 nor SNMPv2 uses encryption? all data and community strings are sent in clear text. A malicious user can sniff an SNMP community string and use it to access and modify network devices. SNMPv3 is an enhancement to the SNMP protocol that uses encryption to provide confidentiality, integrity, and authentication. SNMPv4 is not currently recognized as a standard.