300-820 Free Exam Study Guide! (Updated 98 Questions)
300-820 Dumps for CCNP Collaboration Certified Exam Questions & Answer
NEW QUESTION 15
Which mode should be used when Call Policy is configured on Expressways?
- A. extended CPL
- B. remote CPL
- C. local CPL, policy service, and off
- D. on
Answer: D
NEW QUESTION 16
Which connection does the traversal zone configuration define?
- A. Cisco UCS E-Series and Cisco UCM
- B. Cisco Expressway-C and Cisco Expressway-E platforms
- C. Expressway-E and Collaboration Endpoints
- D. Cisco UC and Cisco Unified Presence Server
Answer: B
NEW QUESTION 17
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 zone profile must be set to default.
- C. The peer address must be the Expressway-E NAT address.
- D. TLS verify must be enabled.
Answer: C
NEW QUESTION 18
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 does not make it back to the endpoint because the firewall cannot inspect encrypted traffic.
- C. The signaling makes it back to the endpoint because the endpoint sent the private address to the external endpoint.
- D. Encrypted IP traffic for collaboration devices always is trusted by the firewall.
Answer: D
NEW QUESTION 19
Which two statements about Expressway media traversal are true? (Choose two.)
- A. Expressway Control is the traversal server installed in the DMZ.
- B. The Unified Communications traversal zone can be used for Mobile and Remote Access.
- C. Cisco Unified Communications Manager zone can be either traversal server or client.
- D. The Expressway Edge must be put in a firewall DMZ segment.
- E. Both Expressway Edge interfaces can be NATed.
Answer: B,D
Explanation:
Explanation
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X8-10/Cisco-Expressway
NEW QUESTION 20
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. SIP TCP 5061
- D. SIP: TCP 7001
- E. HTTPS: TCP 8443
Answer: A,D
NEW QUESTION 21
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. Neighbor Zone
- B. Any
- C. All
- D. Traversal Zone
Answer: C
NEW QUESTION 22
Refer to the exhibit.
Which two numbers match the regular expression? (Choose two.)
- A. d209d165d200d224
- B. 0
- C. 1
- D. 2
- E. d20d16d20d22
Answer: B,C
NEW QUESTION 23
An engineer is deploying an Expressway solution for the SIP domain Cisco.com. Which SRV record should be configured in the public DNS to support inbound B2B calls?
- A. _cisco-uds._tcp.cisco.com
- B. _sip._tcp.cisco.com
- C. _collab-edge._tls.cisco.com
- D. _cuplogin._tcp.cisco.com
Answer: B
Explanation:
Reference:
https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2018/pdf/BRKCOL-2018.pdf
NEW QUESTION 24
Which statement about scheduling Expressway backups is true?
- A. It is allowed from the application GUI of the Expressway only.
- B. It is allowed from the application CLI and GUI of the Expressway.
- C. It is allowed from the application CLI of the Expressway only.
- D. It is not supported on the application.
Answer: D
NEW QUESTION 25
Refer to the exhibit.
Which two numbers match the regular expression? (Choose two.)
- A. d209d165d200d224
- B. 0
- C. 1
- D. 2
- E. d20d16d20d22
Answer: B,C
NEW QUESTION 26
Which complication does a NAT introduce in SDP for a SIP call?
- A. The IP address specified in the connection data field may be an unrouteable internal address.
- B. The encryption keys advertised in the SDP are only valid for clients not behind a NAT.
- C. Additional headers due to NAT encapsulation can cause the packet size to exceed the MTU.
- D. When the client is behind a NAT they may be unable to determine the appropriate offset due to time zones.
Answer: B
NEW QUESTION 27
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. Expressway-E is listening on the wrong IP interface.
- B. The destination port for Expressway-E is set to 7400 instead of 8443 on the Expressway-C.
- C. Rich Media Session licenses are not activated on Expressway-E.
- D. The XCP Service is not activated on Expressway-E.
Answer: A
NEW QUESTION 28
Which two licenses are required for the Expressway B2B feature to work? (Choose two)
- A. Advanced Networking
- B. TURN Relays
- C. Traversal Server
- D. Rich Media Sessions
- E. Device Provisioning
Answer: C,D
NEW QUESTION 29
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Refer to the exhibit showing logs from the Expressway-C, a copy of the Expressway-E certificate, and the UC traversal zone configuration for the Expressway-C. An office administrator is deploying mobile and remote access and sees an issue with the UC traversal zone. The zone is showing "TLS negotiation failure". What is causing this issue?
- A. In the UC Traversal Zone on the Expressway-C, the peer address is set to the IP of the Expressway-E, which is not a SAN entry in the Expressway-E certificate
- B. The Expressway-E does not have the FQDN of Cisco UCM listed as a SAN in its certificate
- C. The Expressway-E certificate includes the Expressway-C FQDN as a SAN entry
- D. The Expressway-C is missing the FQDN of Cisco UCM in the Common Name of its certificate
Answer: B
NEW QUESTION 30
Which two licenses are required for the B2B feature to work? (Choose two.)
- A. Advanced Networking
- B. Rich Media Sessions
- C. Traversal Server
- D. Device Provisioning
- E. TURN Relays
Answer: B,E
NEW QUESTION 31
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. Expressway-C Cluster Name
- B. Expressway-E Cluster Name
- C. Webex CUSP Cluster Name
- D. Cisco Unified Communications Manager Publisher FQDN
Answer: A
NEW QUESTION 32
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. Create a presearch transform.
- C. Disable SIP in the external zone.
- D. Change the domain of SIP endpoint A to cisco.com.
Answer: A
NEW QUESTION 33
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Conclusion
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