Latest Jan-2022 Cisco 300-820 Dumps Updated 98 Questions
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NEW QUESTION 41
Which step is taken when configuring a Cisco Expressway solution?
- A. Disable H.323 mode on the Expressway-E.
- B. Enable static NAT on the Expressway-E only.
- C. Configure the Expressway-E by using a non-traversal server zone.
- D. Enable H.323 H.460.19 demultiplexing mode on the Expressway-C.
Answer: B
Explanation:
Explanation
NEW QUESTION 42
Refer to the exhibit.
An ISDN gateway is registered to Expressway-C with a prefix of 9 and/or it has a neighbor zone specified that routes calls starting with a 9.
Which value should be entered into the "Source" field to prevent toll fraud regardless at origin of the call?
- A. All
- B. Neighbor Zone
- C. Any
- D. Traversal Zone
Answer: A
NEW QUESTION 43
When deploying an Expressway Core and Expressway Edge cluster for mobile and remote access, which TLS verify subject name must be configured on the Expressway-E UC traversal zone?
- A. Cisco Unified Communications Manager Publisher FQDN
- B. Expressway-C Cluster Name
- C. Expressway-E Cluster Name
- D. Webex CUSP Cluster Name
Answer: B
NEW QUESTION 44
Which step is taken when configuring a Cisco Expressway solution?
- A. Disable H.323 mode on the Expressway-E.
- B. Enable static NAT on the Expressway-E only.
- C. Configure the Expressway-E by using a non-traversal server zone.
- D. Enable H.323 H.460.19 demultiplexing mode on the Expressway-C.
Answer: B
NEW QUESTION 45
Which part of a hybrid cloud-based deployment with Cisco Webex Messenger Service is used for meeting capabilities?
- A. Cisco Webex Meeting Center is always used for meeting capabilities.
- B. Depending on the origin of the user, the Webex Meeting Center or local Cisco Unified Communications Manager meeting resources are used for meeting capabilities.
- C. Depending on the media flow, the Webex Meeting Center or local Cisco Unified CM meeting resources are used for meeting capabilities.
- D. Cisco Unified CM is always used for meeting capabilities.
Answer: B
NEW QUESTION 46
What happens to the encrypted signaling traffic of a collaboration device if you place it inside a firewall with private IP addresses and try to make a call over IP without any collaboration infrastructure?
- A. Encrypted IP traffic for collaboration devices always is trusted by the firewall.
- B. The signaling makes it back to the endpoint because the firewall is an application layer gateway and provides address translation.
- C. The signaling does not make it back to the endpoint because the firewall cannot inspect encrypted traffic.
- D. The signaling makes it back to the endpoint because the endpoint sent the private address to the external endpoint.
Answer: A
NEW QUESTION 47
Refer to the exhibit.
A new neighbor zone is added for a new Cisco Meeting Server, but the zone is showing a SIP status of failed from the time the zone it was created. What should be done to resolve this issue?
- A. More bandwidth must be added to the appropriate pipes
- B. The underlying DNS issue must be resolved
- C. The existing zone using ID 7 must be deleted
- D. The search rule must be changed to continue on match
Answer: D
NEW QUESTION 48
What is one of the user-related prerequisites for Jabber Team Messaging Mode Installation?
- A. Create user accounts in Cisco Unified IM and Presence.
- B. Create user accounts in Cisco Webex Control Hub only.
- C. Create user accounts in Cisco Unified Communications Manager only.
- D. Create user accounts in Cisco Unified CM and Cisco Webex Control Hub.
Answer: D
NEW QUESTION 49
Which two statements about Expressway media traversal are true? (Choose two.)
- A. Both Expressway Edge interfaces can be NATed.
- B. Expressway Control is the traversal server installed in the DMZ.
- C. Cisco Unified Communications Manager zone can be either traversal server or client.
- D. The Unified Communications traversal zone can be used for Mobile and Remote Access.
- E. The Expressway Edge must be put in a firewall DMZ segment.
Answer: D,E
Explanation:
Explanation
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X8-10/Cisco-Expressway
NEW QUESTION 50
What happens to the encrypted signaling traffic of a collaboration device if you place it inside a firewall with private IP addresses and try to make a call over IP without any collaboration infrastructure?
- A. The signaling makes it back to the endpoint because the firewall is an application layer gateway and provides address translation.
- B. The signaling makes it back to the endpoint because the endpoint sent the private address to the external endpoint.
- C. The signaling does not make it back to the endpoint because the firewall cannot inspect encrypted traffic.
- D. Encrypted IP traffic for collaboration devices always is trusted by the firewall.
Answer: B
NEW QUESTION 51
Which entry in the public (external) DNS is valid to configure DNS SRV records for a Cisco Mobile and Remote Access solution?
- A. _cisco-mra._tls.<domain>
- B. _collab-edge._tls.<domain>
- C. _cisco-uds._tcp.<domain>
- D. _cisco-expwy._tls.<domain>
Answer: C
NEW QUESTION 52
What is a key configuration requirement for Hybrid Message Service High Availability deployment with multiple IM and Presence clusters?
- A. AXL service should be activated only on the publisher of each IM and Presence cluster.
- B. You must have the Intercluster Sync Agent working across your IM and Presence clusters.
- C. Your IM and Presence Service clusters must have Multiple Device Messaging disabled.
- D. You must have the Intercluster Lookup Service working across all of your IM and Presence clusters.
Answer: B
NEW QUESTION 53
Refer to the exhibit.
Which two numbers match the regular expression? (Choose two.)
- A. 0
- B. 1
- C. d209d165d200d224
- D. 2
- E. d20d16d20d22
Answer: A,D
NEW QUESTION 54
Refer to the exhibit.
Cisco Unified Communications Manager routes the call via the Webex Meetings route list and route group to the Video Mesh cluster Node#1 in the Video Mesh cluster is hosting the meeting and has reached full capacity, but other nodes in the cluster still have spare capacity.
What happens to the participant's call?
- A. Another node in the cluster is used and an intra-cluster cascade between the two Video Mesh nodes is formed.
- B. The call is queued.
- C. The call fails.
- D. Another node in the cluster is used and an intra-cluster cascade between Webex and the new Video Mesh node is formed.
Answer: D
NEW QUESTION 55
What it is the purpose of using ICE for Mobile and Remote Access endpoints in the Cisco Collaboration infrastructure?
- A. ICE enables Cisco Collaboration endpoints to determine if there is direct connectivity between them.
- B. ICE controls the bandwidth usage for Cisco Collaboration endpoints if the endpoints are located outside the company network.
- C. ICE enablement allows for the Cisco Collaboration endpoint to register through Expressway servers to Cisco Unified Communications Manager behind a firewall.
- D. ICE uses FAST updates to optimize the video quality in case of packet loss. This technology is available only from Cisco Unified CM version 11.5 and later.
Answer: A
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/solutions/PA/ICE/icepa125.html
NEW QUESTION 56
Which zone is required between Expressway-E and Expressway-C in Mobile and Remote Access deployments?
- A. DNS zone
- B. traversal zone
- C. neighbor zone
- D. Unified Communications traversal zone
Answer: D
NEW QUESTION 57
Refer to the exhibit.
Mobile Cisco Jabber cannot register with on-premises Cisco Unified Communications Manager using Mobile and Remote Access. Some logs were captured on Expressway Edge.
Which action corrects this problem?
- A. Ensure that the _cisco-uds SRV record has been configured.
- B. Ensure that the credential has been entered correctly.
- C. Ensure that the SIP domains are added on Expressway Core.
- D. Ensure that the peer address does not match the Common Name on certificate.
Answer: B
NEW QUESTION 58
Refer to the exhibit.
In an environment SIP devices are registered to CUCM and H.323 devices to VCS. What would be required to enable these calls to setup correctly?
- A. Create a presearch transform.
- B. Change the interworking mode to On.
- C. Disable SIP in the external zone.
- D. Change the domain of SIP endpoint A to cisco.com.
Answer: B
NEW QUESTION 59
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 a server certificate to the Expressway-C that is signed by a certificate authority.
- B. Add an intermediate certificate to the Expressway-C that is signed by a certificate authority.
- C. Configure the Expressway-C Traversal Client zone transport protocol with TCP.
- D. Configure the Expressway-C Traversal Client zone Peer 1 address with the fully qualified domain name of the Expressway-E.
Answer: A
NEW QUESTION 60
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