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[2021] 300-820 PDF Questions - Perfect Prospect To Go With Actual4Exams Practice Exam
NEW QUESTION 11
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 12
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: B
NEW QUESTION 13
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. Disable SIP in the external zone.
- B. Change the domain of SIP endpoint A to cisco.com.
- C. Create a presearch transform.
- D. Change the interworking mode to On.
Answer: D
NEW QUESTION 14
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. Traversal Zone
- B. All
- C. Neighbor Zone
- D. Any
Answer: B
NEW QUESTION 15
In a Mobile and Remote Access deployment, where must communications be encrypted with TLS?
- A. Cisco Expressway-C, Cisco Expressway-E, and endpoints outside the enterprise
- B. Cisco Expressway-C, Cisco Expressway-E, and Cisco Unified Communications Manager
- C. Cisco Expressway-E and endpoints outside the enterprise
- D. Cisco Expressway-C, Cisco Unified Communications Manager, and IM&P
Answer: D
NEW QUESTION 16
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 8443
- C. _collab-edge on port 5061
- D. _cisco-uds-edge on port 5061
Answer: B
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-5/exwy_b_mra-expressw
NEW QUESTION 17
Refer to the exhibit. Logins and failing via mobile and remote access. How is this resolved?
- A. SIP is disabled on the Expressway-E. The SIP protocol must be enabled on the server.
- B. No Cisco UCM servers are configured in the Expressway-C. Servers must be added for CallManager and IM and Presence services.
- C. 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.
- D. Although a traversal client zone exists, there is no Unified Communications traversal client zone. One must be created.
Answer: B
NEW QUESTION 18
How does an administrator configure an Expressway to make sure an external caller cannot reach a specific internal address?
- A. add the specific URI in the firewall section of the Expressway and block it
- B. add a search rule route all calls to the Cisco UCM
- C. block the call with a call policy rule in the Expressway-E
- D. configure FAC for the destination alias on the Expressway
Answer: C
NEW QUESTION 19
A call is sent by Cisco UCM to Expressway with a URI of [email protected]. If (7508...)
@expc1a\.pod8\.test\.lab.* is the pattern string, what would be the replacement string of the transform in Expressway to re-write the call so that it becomes [email protected]?
- A. \1@conf\.pod8.test.lab.@
- B. \1@conf\.pod8\.test.lab.!
- C. \[email protected]\.test\.lab
- D. \1@conf\.pod8\.test\lab.*
Answer: C
NEW QUESTION 20
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. Encrypted IP traffic for collaboration devices always is trusted by the firewall.
- D. The signaling does not make it back to the endpoint because the firewall cannot inspect encrypted traffic.
Answer: C
NEW QUESTION 21
Refer to the exhibit.
What is the result of a transformation applied to alias 88514?
- A. [email protected]
- B. 88513@ccnpcollab com
- C. [email protected]
- D. [email protected]
Answer: A
NEW QUESTION 22
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 23
A Cisco Webex Hybrid Video Mesh Node can be installed in the DMZ and on the internal network.
Which statement is true?
- A. Installing a Video Mesh Node in the DMZ requires the external firewall to allow UDP traffic from ANY port to the address of the Video Mesh Nodes via port 5004.
- B. Webex Cloud supports either a DMZ-based Mesh Node for security or an internal-based Mesh Node for media control only.
- C. Using internal Video Mesh Node also works due to Mobile and Remote Access setup for Webex Teams clients. A DMZ node is added for extra security.
- D. Installing a Video Mesh Node in the DMZ requires you to open TCP and UDP port 4444 in your internal firewall for full clustering functionality.
Answer: A
Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/solutions/CVD/Collaboration/hybrid/12x/hybcvd/hms.html
NEW QUESTION 24
Refer to the exhibit.
Which inbound connection should an administrator configure on the outside firewall?
- A. HTTPS (tunneled over SSH between C and E): TCP 2222
- B. SIP TCP 5061
- C. Media: UDP 36000 to 36011
- D. XMPP TCP 5222
Answer: C
NEW QUESTION 25
Jabber cannot log in via Mobile and Remote Access. You inspect Expressway-C logs and see this error message:
XCP_JABBERD Detail="Unable to connect to host '%IP%', port 7400:(111) Connection refused" Which is the cause of this issue?
- A. Rich Media Session licenses are not activated on Expressway-E.
- B. The XCP Service is not activated on Expressway-E.
- C. Expressway-E is listening on the wrong IP interface.
- D. The destination port for Expressway-E is set to 7400 instead of 8443 on the Expressway-C.
Answer: C
NEW QUESTION 26
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 search rule must be changed to continue on match
- C. The underlying DNS issue must be resolved
- D. The existing zone using ID 7 must be deleted
Answer: B
NEW QUESTION 27
When designing the call control on a Cisco Expressway Core, which is the sequence of dial plan functions?
- A. search rules, zones, local zones
- B. transforms, CPL, user policy, search rules
- C. search rules, transforms
- D. DNS zone, local zone, search rules
Answer: C
NEW QUESTION 28
Which step is taken when configuring a Cisco Expressway solution?
- A. Configure the Expressway-E by using a non-traversal server zone.
- B. Disable H.323 mode on the Expressway-E.
- C. Enable static NAT on the Expressway-E only.
- D. Enable H.323 H.460.19 demultiplexing mode on the Expressway-C.
Answer: C
NEW QUESTION 29
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 30
Which media encryption mode can be configured on an Expressway zone?
- A. Triple Data Encryption Standard
- B. force unencrypted
- C. IPsec
- D. Advanced Encryption Standard
Answer: B
NEW QUESTION 31
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