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 02, 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

How does an administrator configure an Expressway to make sure an external caller cannot reach a

specific internal address?

A : ock the call with a call policy rule in the Expressway-E

B : the specific URI in the firewall section of the Expressway and block it

C : nfigure FAC for the destination alias on the Expressway

D : a search rule route all calls to the Cisco UCM

Answer: C

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

Refer to the exhibit. When users sign in to Cisco Jabber through Mobile and Remote Access, they cannot see their own photo or the photo of their contacts next to each name. Which action must be taken in Cisco Expressway-C to resolve the issue?

A : Add an HTTP allow list for the Instant Message and Presence server.

B : Add an allow call policy rule from the Cisco UCM traversal zone.

C : Upload the missing Instant Messaging and Presence server certificate to fix the connection to its server.

D : Add an HTTP allow list for the web server that contains the photos.

Answer: D

Question 5

Which attribute in the SDP for a call is affected by the static NAT address configuration in an ExpresswayE?

A : nnection

B : me

C : rsion

D : ndwidth

Answer: B

Page: 1 / 41

Total 205 Questions | Updated On: Apr 02, 2026

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