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: Jan 14, 2026

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Question 1

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 2

Refer to the exhibit. After hardening the Cisco Expressway, an engineer noticed this error in the logs HTTP error 429 "Too Many Requests,” and users report that authentication is not possible on more than two devices. What must the engineer increase to correct the issue?

A : maximum authorizations per period

B : credentials refresh interval

C : rate control period

D : credentials cleanup interval

Answer: A

Question 3

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 4

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 5

Refer to the exhibit.Calls to locally registered endpoints are failing. At present, there are two endpoints registered locally to this Expressway. An H.323 endpoint with an alias of “EndpointA” is registered, and a SIP endpoint with an alias of “EndpointB@pod1.local” is also registered. How is this issue resolved?

A : The dialplan must be redesigned to use the transforms to convert the alias into SIP URI format and then use separate search rules for each format that needs to be dialed within the local zone.

B : The calls are failing because there are insufficient licenses. Additional licenses must be installed for the Expressway to route these calls.

C : The current search rule does not match the call, so the search rule must be modified to include a SIP Variant of “Standards-Based”.

D : Calling parties are placing calls with the wrong domain. End-users must be instructed not to use the pod1.local domain as that is owned by the local system. Calls to any other domain would work.

Answer: A

Page: 1 / 41

Total 205 Questions | Updated On: Jan 14, 2026

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