As a network administrator, you should be familiar with various commands. Which command can
be used to enable a SIP user agent on a Cisco router?

A.
sip-ua interface configuration mode subcommand

B.
sip-ua dial-peer configuration mode subcommand

C.
sip-ua global configuration mode command

D.
No special command is required. SIP is on by default.

Explanation:
The SIP UA does not require configuration to function, but you might want to make some
adjustments. Enter UA configuration mode by issuing thesip-uacommand. As with dial peers, the
options vary by Cisco IOS and device. Table 4-2 shows some common UA commands.
http://www.ciscopress.com/articles/article.asp?p=664148&seqNum=6