Exam 350-801 topic 1 question 250 discussion

Correct answer is B...On the Edit General Configuration page, for IP Addressing Mode, select the option from the list to control where Connection listens for incoming traffic: • IPv4 • IPv6 • IPv4 and IPv6

Correct answer is B based on the below description from the design guide for CUC: For SIP integrations with Cisco Unified CM, if Unity Connection is configured to listen for incoming IPv4 and IPv6 traffic, you can configure the addressing mode that Unity Connection uses for call control signaling for each port group to use either IPv4 or IPv6. (This mode is also used when connecting to a TFTP server.) In addition, you can configure the addressing mode that Unity Connection uses for media for each port group to use either IPv4 or IPv6.

For SIP integrations with Cisco Unified CM, if Unity Connection is configured to listen for incoming IPv4 and IPv6 traffic, you can configure the addressing mode that Unity Connection uses for call control signaling for each port group to use either IPv4 or IPv6. (This mode is also used when connecting to a TFTP server.) In addition, you can configure the addressing mode that Unity Connection uses for media for each port group to use either IPv4 or IPv6. Answer B

Correct answer is B

"IP Addressing Mode" is the name of the parameter in CUC, under System Settings -> General Configuration. If you go to the Help -> This Page menu, it says this about that parameter: "When Unity Connection is configured for IPv6, select the option from the list to control where Unity Connection listens for incoming traffic: IPv4 IPv6 IPv4 and IPv6 Default Setting: IPv4" Per the above, it DOESN'T listen for incoming traffic for IPv6 by default, but the question says "if the Cisco Unity Connection is configured to listen for incoming IPv4 and IPv6 traffic", so to me, that implies that it has ALREADY correctly been set to "IPv4 and IPv6". If it has already correctly been set, then no additional setup is required, so A. There are no IPv4/IPv6 settings in the port or port group settings, so B and C are not a thing, and D refers to a CUCM config, not Unity.

As per Design guide, I believe that A is the correct answer as Unity with SIP integration work either with IPv4 or IPv6 so here if IPv4 configured so unity would work automatically or if IPv6 configured so unity would work automatically also, so setup is not required.

Looking at the pluralsight training the answer is A.

Per the documentation, the key is on IPv4 and IPv6 VS IPv4 or IPv6. Because cisco said "or" A should be the answer as IPv4 is the default For SIP integrations with Cisco Unified CM, if Unity Connection is configured to listen for incoming IPv4 and IPv6 traffic, you can configure the addressing mode that Unity Connection uses for call control signaling for each port group to use either IPv4 or IPv6. (This mode is also used when connecting to a TFTP server.) In addition, you can configure the addressing mode that Unity Connection uses for media for each port group to use either IPv4 or IPv6. https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/11x/design/guide/b_11xcucdg/b_11xcucdg_chapter_00.html

Another tricky question, in the "Server" section of "Port Group" there is "IPv6 Addersing Mode" selection which is for IPv6 you select to use IPv4 or IPv6 for signaling and media, hence the question said you configured the unity, then the best answer to fit will be A. The correct answer is A.

could be B. For SIP integrations with Cisco Unified CM, if Unity Connection is configured to listen for incoming IPv4 and IPv6 traffic, you can configure the addressing mode that Unity Connection uses for call control signaling for each port group to use either IPv4 or IPv6. https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/11x/design/guide/b_11xcucdg/b_11xcucdg_chapter_00.html

https://community.cisco.com/t5/collaboration-voice-and-video/how-to-add-ipv6-addresses-of-cisco-unity-connection-8-5-amp/ta-p/3127547#toc-hId-1040659863 If answer B refers to "Port Groups" it must be wrong, as in the Port Group - IPv6 Addressing Mode section, the dropdown menus allows IPv4 OR IPv6 (not AND). The initial statement "Cisco Unity Connection is configured to listen for incoming IPv4 and IPv6 traffic" refers to System Settings\General Configuration\IP Addressing Mode, indeed. That's where you can select "IPv4 and IPv6". D must be wrong either, as the question asks about a configuration on Cisco Unity (not CUCM). I don't se reasons why A should be the correct one, can anyone elaborate more on this?

If answer B refers to "Port Groups" it must be wrong, as in the Port Group - IPv6 Addressing Mode section, the dropdown menus allows IPv4 OR IPv6 (not AND). The initial statement "Cisco Unity Connection is configured to listen for incoming IPv4 and IPv6 traffic" refers to System Settings\General Configuration\IP Addressing Mode, indeed. That's where you can select "IPv4 and IPv6". D must be wrong either, as the question asks about a configuration on Cisco Unity (not CUCM). I don't se reasons why A should be the correct one, can anyone elaborate more on this?

The initial statement "Cisco Unity Connection is configured to listen for incoming IPv4 and IPv6 traffic" refers to System Settings\General Configuration\IP Addressing Mode, indeed. That's where you can select "IPv4 and IPv6". D must be wrong either, as the question asks about a configuration on Cisco Unity (not CUCM). I don't se reasons why A should be the correct one, can anyone elaborate more on this?

I don't se reasons why A should be the correct one, can anyone elaborate more on this?

Follow link below, search "For SIP integrations" cisco.com/c/en/us/td/docs/voice_ip_comm/connection/11x/design/guide/b_11xcucdg/b_11xcucdg_chapter_00.html

B is correct. For SCCP integrations with Cisco Unified CM, if Unity Connection is configured to listen for incoming IPv4 and IPv6 traffic, you can configure the addressing mode that Unity Connection uses for call control signaling for each port group to use either IPv4 or IPv6. (This mode is also used when connecting to a TFTP server.)

Second part of my reasoning is this: If Unity Connection uses IPv6 or dual-mode (IPv4 and IPv6) to communicate with Cisco Unified CM, do the following subtasks: 1. Enable IPv6 on the Unity Connection server. 2. In Cisco Unity Connection Administration, on the System Settings > General Configuration page, select an option for IP Addressing Mode to control where Unity Connection listens for incoming traffic. You can select IPv4, IPv6, or IPv4 and IPv6. The setting defaults to IPv4. The default settings are IPv4, CUCM will communicate to Unity. Answer A still applies since configurations are not really needed unless you want to use IPv4 and IPv6 in tandem but this is not a port group setting and that disqualify answer B and C. https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/connection/11x/integration/guide/cucm_sip/b_cucintcucmsip.pdf