Which Cisco IOS-XE dial-peer command has the lowest preference for inbound POTS dial-peer matching?
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A. B. C. D. E.C.
https://www.cisco.com/c/en/us/support/docs/voice/ip-telephony-voice-over-ip-voip/211306-In-Depth-Explanation-of-Cisco-IOS-and-IO.html#anc8In Cisco IOS-XE, when a call is received on a POTS (Plain Old Telephone Service) dial-peer, the router matches the incoming call to the appropriate inbound POTS dial-peer. This matching process is based on certain criteria, and the dial-peer with the highest matching preference is selected.
Out of the given options, the dial-peer command with the lowest preference for inbound POTS dial-peer matching is "Destination-pattern <number-string>."
Explanation of other options:
A. Carrier-id source <string>: This command is used to specify the carrier identification source for the POTS dial-peer. It is not used in the inbound POTS dial-peer matching process.
B. Answer-address <number-string>: This command is used to specify the address to which the call should be answered. It is not used in the inbound POTS dial-peer matching process.
C. Port <voice-port-number>: This command is used to specify the voice port on which the call should be received. It is not used in the inbound POTS dial-peer matching process.
D. Destination-pattern <number-string>: This command is used to specify the called number pattern that should match the incoming call. The dial-peer with the highest matching preference is selected. However, in this question, we are asked for the dial-peer command with the lowest preference for inbound POTS dial-peer matching.
E. Incoming called-number <number-string>: This command is used to specify the called number that should match the incoming call. It is not used in the inbound POTS dial-peer matching process.
Therefore, the correct answer is D, i.e., "Destination-pattern <number-string>."