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: Apr 21, 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

300-820-page39-image25

Refer to the exhibit. When a Jabber user attempts to connect from outside of the organization, the user

enters the login information as "user@example.com" and receives the error "Cannot find your services

Automatically". The engineer tries to resolve SRV records used by Jabber.

DNS A record "expressway-e.example.com" points to the Expressway-E IP and "cucm.example.com"

points to the Cisco Unified Communications Manager.

Which change resolves the DNS problem?

A : Change cisco-uds to point to the Expressway-E FQDN.

B : ange the collab-edge record to point to 5061.

C : move the cisco-uds SRV record for the external DNS.

D : ange the priority of the SRV record for cisco-uds.

Answer: C

Question 3

An Expressway pairs deployed for Mobile and Remote Access. An administrator installs a new server certificate on the Expressway-E. After installing the new certificate, the UC Traversal zone between Expressway-C and Expressway-E is active. Still, Jabber Mobile and Remote Access clients cannot log in over the Expressway. The certificate Common Name is the FQDN of Expressway-E, “expe01 example.com”, and the certificate contains no additional names. Which Subject Alternate Name must be added to the certificate to allow Jabber Mobile and Remote Access clients to log in successfully?

A : FQDN of the Expressway-C, “expc01.example.local”

B : registration domain, “example.com” or “collab-edge.example.com”

C : Cisco UCM cluster FQDN, “cucmcluster.example.local”

D : FQDN of the Expressway-E, “expe01.example.com”

Answer: B

Question 4

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 5

An administrator is configuring a new Cisco Webex Hybrid Message Service deployment, and the Expressway-C Message Connector is successfully registered in the Control Hub. After the server information of the IM and Presence server is added to the Expressway-C, an error “Connectivity to IM and Presence AXL Service could not be established” is displayed in the Control Hub. The Cisco AXL Web Service is enabled on the IM and Presence Service publisher, and the main administrator account enabled for AXL API permission is being used. Which configuration change must be made to resolve this error?

A : Enable the Cisco AXL Web Service on the Control Hub

B : Enable the Cisco AXL Web Service on the Expresswav-C Message Connector

C : Enable an End User account for AXLAPI permissions on the IM and Presence Service publisher

D : Enable a second administrator account for AXL API permissions on the IM and Presence Service publisher

Answer: D

Page: 1 / 41

Total 205 Questions | Updated On: Apr 21, 2026

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