Free Cisco 300-820 Exam Questions

Become Cisco Certified with updated 300-820 exam questions and correct answers

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Total 205 Questions | Updated On: Sep 22, 2026

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Question 1

Refer to the exhibit.When configuring a search rule that routes calls to a zone, what occurs when 13358 is dialed?

A : 13358 is replaced by 135, and then is sent to the local zone.

B : 13358 is replaced by 135 and remains in the same zone.

C : 13358 is replaced by 135, and then is sent to the traversal zone.

D : 13358 is sent directly to the traversal zone.

Answer: C

Question 2

An engineer must enable the communication between two separate Expressway-C servers to allow inbound and outbound calling between different endpoints registered on each server. Which configuration must happen?

A : Configure a traversal zone on each server with a destination of the other Expressway-C.

B : Configure a neighbor zone on each server with a destination of the other Expressway-C.

C : Configure a transform on each server to strip the port numbers at the end of the alias.

D : Configure a transform on each server to convert the calling alias into the called alias.

Answer: B

Question 3

Refer to the exhibit. An engineer is deploying mobile and remote access in an environment that already had functioning Business to Business calling. Mobile and remote access SIP registrations are failing. To troubleshoot, SIP logs were collected. How is this issue resolved?

A : Change the SIP profile on the SIP trunk for the Expressway-E to Standard SIP Profile for TelePresence Endpoint

B : Change the “Incoming Port” in the SIP Trunk Security Profile for the Expressway-C to not match SIP line registrations

C : Enable autoregistration for the appropriate DN range on the Cisco UCM servers running the CallManager service

D : Write a custom normalization script since the “vcs-interop” normalization script does not allow registrations

Answer: B

Question 4

An organization with a domain name of example.com. Which two SRV records are valid for a SIP and H.323 communication? (Choose two.)

A : _sips._tcp.example.com

B : _sips._udp.example.com

C : _h323ls._udp.example com

D : _h323ls._tcp.example.com

E : _collab-edge._tls.example.com

Answer: A,C

Question 5