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. 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 2

An administrator is configuring DNS to allow Mobile and Remote Access logins for the domain cisco.com. Where must the _collab-edge_tls.cisco.com DNS SRV record be configured?

A : in the public DNS server

B : in DNS SRV settings under Cisco Unified OS Administration in Cisco UCM

C : in DNS settings in the Expressway-E on the interface that faces the Internet

D : in DNS settings under Cisco Unified OS Administration in Cisco UCM

Answer: A

Question 3

When does the Webex App Endpoint send media to the Video Mesh cluster during a meeting?

A : when the Webex cloud media services are offline

B : when there is insufficient bandwidth at the MPLS WAN edge.

C : when the round-trip delay to the Video Mesh cluster is shorter than the round-trip delay to the Webex cloud media services

D : when there is insufficient bandwidth at the internet edge

Answer: C

Question 4

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 5

Which configuration is required when implementing Mobile and Remote Access on Cisco Expressway?

A :

B : ML authentication

C : co Unified CM publisher address

D : O

Answer: C

Page: 1 / 41

Total 205 Questions | Updated On: Jan 14, 2026

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