Get 2021 Updated Free Cisco 300-820 Exam Questions & Answer [Q27-Q50]

Get 2021 Updated Free Cisco 300-820 Exam Questions & Answer

300-820 Dumps PDF and Test Engine Exam Questions

NEW QUESTION 27
Which two statements about Cisco Webex Video Mesh Nodes are true? (Choose two.)

A. The cascading traffic between VMN must bypass the firewall.
B. A VMN can terminate a media connection while operating in maintenance mode.
C. When Expressway Core works with VMN clusters, Expressway Core decides which VMN is used for signaling/media connection.
D. When Cisco Unified Communications Manager works with multiple VMNs, Cisco Unified CM decides which VMN is used for signaling connection.
E. Cloud-registered devices choose a VMN cluster based on the lowest STUN round trip delay.

Answer: D,E

NEW QUESTION 28
What should an engineer use to create users for a Cisco Jabber Cloud Deployment?

A. Cisco UCM
B. Cisco Webex Administration Tool
C. Cisco Unified IM and Presence Server
D. Cisco Webex Directory Connector

Answer: B

Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/jabber/12_6/cjab_b_cloud-and-hybrid-deploymentscisco-jabber-12-6/cjab_b_cloud-and-hybrid-deployments-cisco-jabber-12-6_chapter_0101.html

NEW QUESTION 29
Which role does Call Policy play when preventing toll fraud on Expressways?

A. It controls which calls are allowed, which calls are rejected, and which calls are redirected to a different destination.
B. It changes the calling and called number on a call.
C. It changes the audio codec used in a call through Expressways.
D. It changes the audio protocol used by a call through Expressways.

Answer: A

Explanation:
Explanation/Reference:

NEW QUESTION 30
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. Change the interworking mode to On.
B. Disable SIP in the external zone.
C. Change the domain of SIP endpoint A to cisco.com.
D. Create a presearch transform.

Answer: A

NEW QUESTION 31
Which entry in the public (external) DNS is valid to configure DNS SRV records for a Cisco Mobile and Remote Access solution?

A. _cisco-uds._tcp.<domain>
B. _cisco-expwy._tls.<domain>
C. _cisco-mra._tls.<domain>
D. _collab-edge._tls.<domain>

Answer: D

NEW QUESTION 32
What is configured on the Expressway-E to successfully route calls from Expressway-C on the internal network to the Internet?

A. Application layer gateway is enabled to bridge the media traffic.
B. The Expressway-E is enabled for Dual-NIC capability.
C. The Expressway-E is enabled for interworking
D. A static NAT route is added to the firewall to bridge the two networks.

Answer: B

NEW QUESTION 33

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. Remove the cisco-uds SRV record for the external DNS.
B. Change the priority of the SRV record for cisco-uds.
C. Change the collab-edge record to point to 5061.
D. Change cisco-uds to point to the Expressway-E FQDN.

Answer: A

NEW QUESTION 34
What is a key configuration requirement for Hybrid Message Service High Availability deployment with multiple IM and Presence clusters?

A. You must have the Intercluster Lookup Service working across all of your IM and Presence clusters.
B. You must have the Intercluster Sync Agent working across your IM and Presence clusters.
C. AXL service should be activated only on the publisher of each IM and Presence cluster.
D. Your IM and Presence Service clusters must have Multiple Device Messaging disabled.

Answer: B

NEW QUESTION 35
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. Configure the Expressway-C Traversal Client zone transport protocol with TCP.
B. Configure the Expressway-C Traversal Client zone Peer 1 address with the fully qualified domain name of the Expressway-E.
C. Add a server certificate to the Expressway-C that is signed by a certificate authority.
D. Add an intermediate certificate to the Expressway-C that is signed by a certificate authority.

Answer: D

NEW QUESTION 36
Which step is required when configuring cloud and hybrid deployments for Cisco Jabber?

A. Add the Jabber user to Cisco Unity Connection.
B. Add the Jabber user to Expressway-E.
C. Add the Jabber user to Expressway-C.
D. Add Jabber Users to the Cisco Webex Administration Tool.

Answer: D

NEW QUESTION 37

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. Change the interworking mode to On.
B. Disable SIP in the external zone.
C. Change the domain of SIP endpoint A to cisco.com.
D. Create a presearch transform.

Answer: A

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 credential has been entered correctly.
C. Ensure that the _cisco-uds SRV record has been configured.
D. Ensure that the SIP domains are added on Expressway Core.

Answer: B

NEW QUESTION 39

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. Enable autoregistration for the appropriate DN range on the Cisco UCM servers running the CallManager service
C. Write a custom normalization script since the "vcs-interop" normalization script does not allow registrations
D. Change the "Incoming Port" in the SIP Trunk Security Profile for the Expressway-C to not match SIP line registrations

Answer: D

NEW QUESTION 40
Which connection does the traversal zone configuration define?

A. Cisco UCS E-Series and Cisco UCM
B. Expressway-E and Collaboration Endpoints
C. Cisco UC and Cisco Unified Presence Server
D. Cisco Expressway-C and Cisco Expressway-E platforms

Answer: D

NEW QUESTION 41
Which statement about the Cisco Webex hybrid service is true?

A. Hybrid Message service works only with Jabber cloud deployment.
B. Directory Connector must be deployed for OBTP to work with on-premises video devices.
C. Directory Connector is required for Azure AD.
D. Expressway Connector is required for an on-premises Exchange server.

Answer: D

NEW QUESTION 42
Refer to the exhibit.

Which description of the transformation is true?

A. It converts [email protected]:<port> to [email protected]
B. It changes all patterns that begin with [email protected]:<port> to [email protected]
C. It converts [email protected]:<port> to [email protected]
D. It changes [email protected]:<port> to [email protected]

Answer: C

NEW QUESTION 43
Which DNS record and port combination must be resolved externally for Mobile and Remote Access to be used?

A. _cisco-uds on port 8443
B. _collab-edge on port 5061
C. _cisco-uds-edge on port 5061
D. _collab-edge on port 8443

Answer: D

NEW QUESTION 44
Which two licenses are required for the B2B feature to work? (Choose two.)

A. Advanced Networking
B. Traversal Server
C. Rich Media Sessions
D. TURN Relays
E. Device Provisioning

Answer: C,D

NEW QUESTION 45
Which two statements about Cisco Webex Video Mesh Nodes are true? (Choose two.)

A. The cascading traffic between VMN must bypass the firewall.
B. A VMN can terminate a media connection while operating in maintenance mode.
C. When Expressway Core works with VMN clusters, Expressway Core decides which VMN is used for signaling/media connection.
D. When Cisco Unified Communications Manager works with multiple VMNs, Cisco Unified CM decides which VMN is used for signaling connection.
E. Cloud-registered devices choose a VMN cluster based on the lowest STUN round trip delay.

Answer: D,E

Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Collaboration/hybrid/12x/hybcvd/hms.html

NEW QUESTION 46
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 Webex Control Hub only.
C. Create user accounts in Cisco Unified IM and Presence.
D. Create user accounts in Cisco Unified CM and Cisco Webex Control Hub.

Answer: B

NEW QUESTION 47
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. Configure the Expressway-C Traversal Client zone transport protocol with TCP.
C. Add a server certificate to the Expressway-C that is signed by a certificate authority.
D. Configure the Expressway-C Traversal Client zone Peer 1 address with the fully qualified domain name of the Expressway-E.

Answer: D

NEW QUESTION 48
A company has enabled ICE to optimize call flows and improve video quality between their Cisco Collaboration endpoints internally and externally.
For which reason would you see activity on the TURN server when a call is established between two external endpoints?

A. The video call is using 4K resolution, which is not supported by ICE with CUCM 12.5
B. A STUN cannot punch holes in the firewall
C. ICE cannot reduce the packet loss on the link
D. The video call is using encryption, which is not supported by ICE with CUCM 12.5

Answer: B

NEW QUESTION 49
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?