Excellent 300-820 Updated 2021 Dumps With 100% Exam Passing Guarantee
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NEW QUESTION 33
Which part of a hybrid cloud-based deployment with Cisco Webex Messenger Service is used for meeting capabilities?
- A. Depending on the origin of the user, the Webex Meeting Center or local Cisco Unified Communications Manager meeting resources are used for meeting capabilities.
- B. Depending on the media flow, the Webex Meeting Center or local Cisco Unified CM meeting resources are used for meeting capabilities.
- C. Cisco Unified CM is always used for meeting capabilities.
- D. Cisco Webex Meeting Center is always used for meeting capabilities.
Answer: A
NEW QUESTION 34
A Jabber user is being prompted to trust the Expressway-E certificate when using Mobile and Remote Access. The administrator has validated that the Expressway-E certificate is being trusted by the machine running the Jabber client.
What else can be done to solve this problem?
- A. Change the FQDN of the Expressway.
- B. Change the domain name.
- C. Create a new CSR with new information on the SAN field.
- D. Include Cisco Unified Communications Manager registration domain in the Expressway-E certificate as a SAN.
Answer: D
NEW QUESTION 35
An organization has a domain name of example.com. Which two SRV records are valid for a SIP and H 323 communication? (Choose two)
- A. _collab-edge._tls.example.com
- B. _sips_tcp.example.com
- C. _h323ls._udp.example.com
- D. _h323ls_tcp.example.com
- E. _sips._udp.example.com
Answer: B,C
NEW QUESTION 36
What is one of the user-related prerequisites for Jabber Team Messaging Mode Installation?
- A. Create user accounts in Cisco Unified Communications Manager only.
- B. Create user accounts in Cisco Unified IM and Presence.
- C. Create user accounts in Cisco Unified CM and Cisco Webex Control Hub.
- D. Create user accounts in Cisco Webex Control Hub only.
Answer: C
NEW QUESTION 37
Which two statements about Mobile and Remote Access certificate are true? (Choose two.)
- A. Expressway must generate certificate signing request.
- B. You must upload the root certificates in the phone trust store.
- C. Expressway Core can use private CA signed certificate.
- D. Expressway Edge must use public CA signed certificate.
- E. The Jabber client can work with public or private CA signed certificate.
Answer: C,E
NEW QUESTION 38
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 peer address does not match the Common Name on certificate.
- B. Ensure that the _cisco-uds SRV record has been configured.
- C. Ensure that the credential has been entered correctly.
- D. Ensure that the SIP domains are added on Expressway Core.
Answer: C
NEW QUESTION 39
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. The NAT ALG cannot inspect the contents of encrypted signaling messages.
- C. Source addresses cannot provide the destination addresses that remote endpoints should use for return packets.
- D. NAT ALG introduces jitter in the voice path.
Answer: B
NEW QUESTION 40
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. Another node in the cluster is used and an intra-cluster cascade between Webex and the new Video Mesh node is formed.
- D. The call fails.
Answer: C
NEW QUESTION 41
For a Mobile and Remote Access deployment, which server's certificate must include the Unified registration domain as a Subject Alternate Name?
- A. Expressway-C server certificate
- B. Cisco Unified Communications Manager server certificate
- C. Expressway-C and Expressway-E server certificate
- D. Expressway-E server certificate
Answer: D
Explanation:
Explanation
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X8-7/Mobile-Remote-Ac
NEW QUESTION 42
Refer to the exhibit.
When a Jabber user attempts to connect from outside of the organization, the user enters the login information as "[email protected]" 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. Remove the cisco-uds SRV record for the external DNS.
- C. Change the collab-edge record to point to 5061.
- D. Change the priority of the SRV record for cisco-uds.
Answer: B
NEW QUESTION 43
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. Configure the Expressway-C Traversal Client zone Peer 1 address with the fully qualified domain name of the Expressway-E.
- C. Add an intermediate certificate to the Expressway-C that is signed by a certificate authority.
- D. Configure the Expressway-C Traversal Client zone transport protocol with TCP.
Answer: A
NEW QUESTION 44
An Expressway-E is configured using a single NIC with NAT.
How must the Expressway-C traversal client zone be configured to connect to the Expressway-E?
- A. The peer address must be the Expressway-E LAN 1 IP address.
- B. The peer address must be the Expressway-E NAT address.
- C. The zone profile must be set to default.
- D. TLS verify must be enabled.
Answer: A
NEW QUESTION 45
Between which two DTMF relay methods does the Expressway support interworking? (Choose two.)
- A. H.245 user input indication
- B. unsolicited notify
- C. RFC 2833
- D. passthrough
- E. KPML
Answer: A,C
NEW QUESTION 46
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. Configure the Expressway-C Traversal Client zone Peer 1 address with the fully qualified domain name of the Expressway-E.
- C. Configure the Expressway-C Traversal Client zone transport protocol with TCP.
- D. Add an intermediate certificate to the Expressway-C that is signed by a certificate authority.
Answer: D
NEW QUESTION 47
When deploying an Expressway Core and Expressway Edge cluster for mobile and remote access, which TLS verity subject name must be configured on the Expressway-E UC traversal zone?
- A. Expressway-C Cluster Name
- B. Webex CUSP Cluster Name
- C. Cisco Unified Communications Manager Publisher FQDN
- D. Expressway-E Cluster Name
Answer: D
NEW QUESTION 48
Which SIP media encryption mode is applied by default for newly created zones in the Cisco Expressway?
- A. Force Encrypted
- B. Off
- C. Auto
- D. Best Effort
Answer: C
NEW QUESTION 49
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