Cisco 300-820 Daily Practice Exam New 2025 Updated 200 Questions
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NEW QUESTION # 71
Which mode should be used when Call Policy is configured on Expressways?
- A. extended CPL
- B. local CPL, policy service, and off
- C. remote CPL
- D. on
Answer: D
NEW QUESTION # 72
Refer to the exhibit. The firewall has been configured from NAT 192.168.108.2 to 100.64.0.1.
Which configuration changes are needed for an Expressway-E with dual network interfaces?
- A.
- B.
- C.
- D.
Answer: D
NEW QUESTION # 73
Refer to the exhibit.
Which two outbound connections should an administrator configure on the internal firewall? (Choose two.)
- A. XMPP: TCP 7400
- B. Media: UDP 36012 to 59999
- C. HTTPS: TCP 8443
- D. SIP TCP 5061
- E. SIP: TCP 7001
Answer: A,E
NEW QUESTION # 74
An administrator configures a secure SIP trunk in Cisco UCM to Expressway-C. The SIP trunk fails to become active, and an examination of a packet capture finds that the TLS handshake failed with a "Certificate Unknown" error from Cisco UCM. To allow the Cisco UCM to trust the Expressway-C and establish a TLS connection, the administrator will upload the Expressway server certificate to the trust store. To which trust store must the certificate be uploaded?
- A. CallManager-trust
- B. TVS-trust
- C. ipsec-trust
- D. tomcat-trust
Answer: A
NEW QUESTION # 75
Which statement about scheduling Expressway backups is true?
- A. It is allowed from the application GUI of the Expressway only.
- B. It is not supported on the application.
- C. It is allowed from the application CLI and GUI of the Expressway.
- D. It is allowed from the application CLI of the Expressway only.
Answer: B
Explanation:
Scheduling backups is not supported in the Expressway code.
NEW QUESTION # 76 
Refer to the exhibit. Which two numbers match the regular expression? (Choose two.)
- A. 0
- B. 1
- C. d20d16d20d22
- D. 2
- E. d209d165d200d224
Answer: B,D
NEW QUESTION # 77
After Mobile and Remote Access is deployed with automatic service discovery, end users encounter the error "Cannot communicate with the server" when they attempt to log in to Cisco Jabber 14.0 using the company email address from within the company network. Which action must an administrator take to resolve this challenge?
- A. Create _cisco-uds._tcp DNS SRV record in the internal DNS server.
- B. Create _collab-edge._tls DNS SRV record in the public DNS.
- C. Create _collab-edge._tcp DNS SRV record in the internal DNS.
- D. Create _cisco-uds._tcp DNS SRV record in the public DNS server.
Answer: C
NEW QUESTION # 78
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 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. The signaling makes it back to the endpoint because the firewall is an application layer gateway and provides address translation.
Answer: A
NEW QUESTION # 79
When the network requirements are configured for a new Video Mesh deployment, which firewall ports are required so that Video Mesh cascade signaling succeeds?
- A. TCP 443 and 444
- B. UDP 33432 through 33433
- C. TCP 443 and 8443
- D. UDP 5004 and 5005
Answer: C
Explanation:
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cloudCollaboration/wbxt/videomesh/cmgt_ b_webex-video-mesh-deployment-guide/cmgt_b_hybrid-media-deployment- guide_chapter_010.html
NEW QUESTION # 80
Refer to the exhibit.
When configuring a search rule that routes calls to a zone, what occurs when 13358 is dialed?
- A. 13358 is replaced by 135, and then is sent to the traversal zone.
- B. 13358 is replaced by 135 and remains in the same zone.
- C. 13358 is replaced by 135, and then is sent to the local zone.
- D. 13358 is sent directly to the traversal zone.
Answer: A
NEW QUESTION # 81
An engineer must enable the communication between two separate Expressway-C servers to allow inbound and outbound calling between different endpoints registered on each server. Which configuration must happen?
- A. Configure a neighbor zone on each server with a destination of the other Expressway-C.
- B. Configure a traversal zone on each server with a destination of the other Expressway-C.
- C. Configure a transform on each server to convert the calling alias into the called alias.
- D. Configure a transform on each server to strip the port numbers at the end of the alias.
Answer: D
NEW QUESTION # 82
Refer to the exhibit.
Which two numbers match the regular expression? (Choose two.)
- A. 0
- B. 1
- C. d20d16d20d22
- D. 2
- E. d209d165d200d224
Answer: B,D
NEW QUESTION # 83
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 credential has been entered correctly.
- B. Ensure that the peer address does not match the Common Name on certificate.
- C. Ensure that the _cisco-uds SRV record has been configured.
- D. Ensure that the SIP domains are added on Expressway Core.
Answer: A
NEW QUESTION # 84
Which two statements about Mobile and Remote Access certificate are true? (Choose two.)
- A. The Jabber client can work with public or private CA signed certificate.
- B. Expressway Core can use private CA signed certificate.
- C. Expressway must generate certificate signing request.
- D. Expressway Edge must use public CA signed certificate.
- E. You must upload the root certificates in the phone trust store.
Answer: C,D
NEW QUESTION # 85
A new set of Expressway-C and Expressway-E is deployed and was configured for Mobile and Remote Access with basic settings. How must the engineer edit the inbound allow list rule?
- A. Go to Configuration > MRA > HTTP allow rules > Editable inbound rules to view, create, modify, or delete HTTP allow list rules.
- B. Go to Configuration > Unified Communications > HTTP allow list > Editable inbound rules to view.
- C. Go to Configuration > MRA > Editable Inbound rules to view, create, modify, or delete HTTP allow list rules.
- D. Go to Configuration > Unified Communications > MRA > HTTP allow list > Editable inbound rules to view, create, modify, or delete HTTP allow list rules.
Answer: B
NEW QUESTION # 86
During the deployment of a Cisco Webex Video Mesh, where do on-premises SIP endpoints send signaling?
- A. to the call control environment (Unified CM or Expressway)
- B. to the switching services
- C. to the cloud
- D. On-premises endpoints cannot participate in Cisco Webex Video Mesh
Answer: A
NEW QUESTION # 87
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 encryption, which is not supported by ICE with CUCM 12.5
- B. The video call is using 4K resolution, which is not supported by ICE with CUCM 12.5
- C. ICE cannot reduce the packet loss on the link
- D. A STUN cannot punch holes in the firewall
Answer: D
Explanation:
Those addresses (A, B, and C) populate the SIP SDP offer and answer as ICE candidates, and after the signaling has gone through, both endpoints will have the remote party ICE candidate addresses. It is at that point that the endpoints do a connectivity check by sending STUN messages to one another in an attempt to punch transport holes in the firewalls in order to establish media connectivity between peers.
https://www.cisco.com/c/en/us/td/docs/solutions/PA/ICE/icepa125.html
NEW QUESTION # 88
Refer to the exhibit. What are "Type" field values for this Expressway servers zone configuration?
- A. Expressway-C "DNS", Expressway-E "Traversal server"
- B. Expressway-C "Traversal client", Expressway-E "Traversal server"
- C. Expressway-C "Traversal server", Expressway-E "Traversal client"
- D. Expressway-C "Neighbor", Expressway-E "Neighbor"
Answer: B
NEW QUESTION # 89
An administrator deployed the directory connector to synchronize the on-premises Active Directory with the Webex cloud and needs to map attributes from the AD to the corresponding attributes in the cloud. To which Webex cloud attribute must the user Account Control attribute be mapped to ensure that users are synced properly?
- A. displayName
- B. givenName
- C. SipAddresses:type=enterprise
- D. ds-pwp-account-disabled
Answer: D
Explanation:
This attribute is used for user synchronization. Make sure the userAccountControl attribute is mapped to ds-pwp-account-disabled or users won't be synced properly.
NEW QUESTION # 90
Refer to the exhibit. When configuring a search rule that routes calls to a zone, what occurs when
13358 is dialed?
- A. 13358 is sent directly to the traversal zone.
- B. 13358 is replaced by 135 and remains in the same zone.
- C. 13358 is replaced by 135, and then is sent to the local zone.
- D. 13358 is replaced by 135, and then is sent to the traversal zone.
Answer: A
Explanation:
RegEx pattern is 1?3+5. The 1 has a question mark after it, meaning the 1 is optional and not required, but matches in this case. The 3+ says that 3 is mandatory and must occur at least 1 or more times prior to the 5. The 5 is mandatory, and matches after the double 33.
Dialing 13358 does NOT match RegEx because the 8 was included, so the Rule does not do the replace, and the 13358 is sent unchanged.
NEW QUESTION # 91
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 you to open TCP and UDP port 4444 in your internal firewall for full clustering functionality.
- B. 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.
- C. Webex Cloud supports either a DMZ-based Mesh Node for security or an internal-based Mesh Node for media control only.
- D. 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.
Answer: D
NEW QUESTION # 92
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 credential has been entered correctly.
- B. Ensure that the peer address does not match the Common Name on certificate.
- C. Ensure that the _cisco-uds SRV record has been configured.
- D. Ensure that the SIP domains are added on Expressway Core.
Answer: A
NEW QUESTION # 93
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