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Cisco 300-820 exam consists of 60-70 questions that need to be answered in 90 minutes. 300-820 exam tests the candidate's knowledge in various areas such as Cisco Webex Hybrid Services, Cisco Unified IM and Presence, Cisco Expressway, and Cisco Cloud Messaging. 300-820 Exam is computer-based and can be taken at any Pearson VUE testing center around the world.

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Cisco Reliable 300-820 Exam Question: Implementing Cisco Collaboration Cloud and Edge Solutions - Prep4King Help you Prepare Efficiently

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Cisco Implementing Cisco Collaboration Cloud and Edge Solutions Sample Questions (Q49-Q54):

NEW QUESTION # 49
Refer to the exhibit. Logins and failing via mobile and remote access. How is this resolved?

A. Mobile and remote access login has not been enabled for the domain configured in the Expressway-C. The domain must be edited to allow Cisco UCM registrations.
B. Although a traversal client zone exists, there is no Unified Communications traversal client zone. One must be created.
C. SIP is disabled on the Expressway-E. The SIP protocol must be enabled on the server.
D. No Cisco UCM servers are configured in the Expressway-C. Servers must be added for CallManager and IM and Presence services.

Answer: B

Explanation:
If you look at the bottom of the diagram, it shows a CUCM server configured and also states at the very bottom that the UC traversal zone is not configured.

NEW QUESTION # 50
Cisco Collaboration endpoints are exchanging encrypted signaling messages.
What is one major complication in implementing NAT ALG for voice and video devices?

A. Internal endpoints cannot use addresses from the private address space.
B. Source addresses cannot provide the destination addresses that remote endpoints should use for return packets.
C. NAT ALG introduces jitter in the voice path.
D. The NAT ALG cannot inspect the contents of encrypted signaling messages.

Answer: D

Explanation:
A NAT ALG is similar to a firewall ALG, but a NAT ALG actually changes (maps) the addresses and ports in the signaling messages. The NAT ALG cannot inspect the contents of encrypted signaling messages.
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/collab11/collab11/security.html
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X14-
0/basic_config/exwy_b_cisco-expressway-e-and-expressway-c-basic-configuration-deployment- guide-x14-0/exwy_m_advanced-networking-deployments.html

NEW QUESTION # 51
Refer to the exhibit.

An Expressway-C and Expressway-E are configured for B2B calling and the Expressway- E zone is set to TLS Verify Currently, calls do not reach the Expressway-C. The Traversal Client zone on the Expressway-C for B2B reports the information in the exhibit for the Peer 1 address.
Which action resolves this error?

A. Add an intermediate certificate to the Expressway-C that is signed by a certificate authority.
B. Add a server certificate to the Expressway-C that is signed by a certificate authority.
C. Configure the Expressway-C Traversal Client zone Peer 1 address with the fully qualified domain name of the Expressway-E.
D. Configure the Expressway-C Traversal Client zone transport protocol with TCP.

Answer: B

NEW QUESTION # 52
Refer to the exhibit. Mobile and remote access is being added to an existing B2B deployment and is failing.

When the administrator looks at the alarms on the Expressway-C, the snippets are shown. Which configuration action should the administrator take to fix this issue?

A. The listening port on the Cisco UCM for the Expressway-C SIP trunk must be changed to something other than 5060 or 5061
B. The listening port on the Expressway-C for SIP TCP must be changed to a value other than
5060
C. The listening port on the Expressway-C for SIP TLS must be changed to a value other than
5061
D. The listening port on the Cisco UCM for the Expressway-C SIP trunk is set to something other than 5060 or 5061. It must be set to 5060 for insecure and 5061 for secure SIP

Answer: A

Explanation:
https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2018/pdf/BRKUCC-2801.pdf

NEW QUESTION # 53
What is the last step for domain management in Cisco Webex Control Hub if an engineer adds users already signed in with the company domain?

A. Verify a domain.
B. Add a domain.
C. Claim a domain.
D. Publish a domain.

Answer: C

NEW QUESTION # 54
......

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