Which set of commands binds SIP media and signaling to interface GigabitEthernet0/0 when dial peer 1 is chosen for call routing?

Question

Options

• Adial-peer voice 1 voip voice-class source interface GigabitEthernet0/0
• Bvoice service voip bind sip source-interface GigabitEthernet0/0
• Cvoice service voip sip bind all source-interface GigabitEthernet0/0
• Ddial-peer voice 1 voip voice-class bind control source-interface GigabitEthernet0/0 voice-class sip bind media source-interface GigabitEthernet0/0

• A
  2% (1)
• B
  4% (2)
• C
  92% (49)
• D
  2% (1)

Explanation

The correct IOS syntax for binding both SIP media (RTP) and SIP signaling to a specific source interface globally is: enter 'voice service voip', then 'sip', then 'bind all source-interface GigabitEthernet0/0'. The keyword 'all' binds both control (signaling) and media simultaneously to the specified interface. Option A uses a non-existent 'voice-class source interface' construct. Option B is missing the 'sip' sub-mode keyword and uses incorrect syntax. Option D attempts per-dial-peer binding using 'voice-class bind' and 'voice-class sip bind' - while per-dial-peer binding is possible in some IOS versions, the syntax shown in option D is incorrect and incomplete.

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