Free Access Cisco.300-820.v2025-11-24.q165 Practice Test (Page 10)

Question 41

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

A.Source addresses cannot provide the destination addresses that remote endpoints should use for return packets.

B.NAT ALG introduces jitter in the voice path.

C.Internal endpoints cannot use addresses from the private address space.

D.The NAT ALG cannot inspect the contents of encrypted signaling messages.

Question 42

Refer to the exhibit.

Refer to the exhibit. The administrator attempted to log in, but Jabber clients cannot log in via mobile and remote access. How is this issue resolved?

A.Skype for Business mode must be disabled on the DNS server because it conflicts with Jabber login requirements.

B.A DNS SRV record must be created for _collab-edge._tls.pod1.local that points to the Expressway-E.

C.The domain pod1.local must be deprovisioned from the Webex cloud for Jabber logins.

D.The username [email protected] is invalid. The user should instead sign-in simply as jabberuser.

Question 43

Drag and drop the services from the left onto their descriptions on the right. Some services are used more than once.

Question 44

Cisco Collaboration deployment has video endpoints that can do B2B calls over the internet, but they also can make audio calls through a gateway. This ability means that someone from the internet can make fraud calls through the system. Which action must an engineer take to set up the search rules for calls that are being headed to the PSTN gateway?

A.Add registered devices only in the zone for the PSTN gateway.

B.Avoid using any wild card in the source settings in the search rules.

C.Ensure that only requests that are authenticated are allowed to make a PSTN call.

D.Add registered devices only in the search rule for the PSTN gateway.

Question 45

What are two reasons why port 8443 is unreachable from the Internet to the Expressway-E? (Choose two.)

A.The MRA license is missing on the Expressway-E.

B.The firewall is blocking the port.

C.The Unified Communications zone is down.

D.The SRV record for _cisco-uds is misconfigured.

E.Transform is not configured on Expressway-E.

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