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2021 Jan examcollection 400-051:

Q21. Refer to the exhibit. 

A user is going through a series of dialing steps on a SIP Type B IP phone to call a SCCP IP phone. Both phones are registered to the same Cisco Unified Communications Manager cluster. Assume that the calling SIP phone is associated with a SIP dial rule with a pattern value of "2001". 

Which statement about how digits are forwarded to the Cisco Unified Communications Manager for further call processing is true? 

A. As each digit is pressed on the SIP IP phone, it is sent to the Cisco Unified Communications Manager in a SIP NOTIFY message as a KPML event. 

B. The SIP IP phone waits for the inter-digit timer expiry and then sends each digit to the Cisco Unified Communications Manager as a separate KPML event in a SIP NOTIFY message. 

C. As soon as the user selects the Dial soft key, the SIP IP phone forwards all digits to the Cisco Unified Communications Manager in a SIP INVITE message. 

D. As soon as the Dial soft key is selected, the SIP IP phone forwards the first digit in a SIP INVITE and the subsequent digits in SIP INFORMATION messages. 

E. The SIP IP phone waits for the inter-digit timer expiry, and then sends all digits to the Cisco Unified Communications Manager in a SIP INVITE message. 

Answer: C 


Q22. Refer to the exhibit. 

If this SIP call is initiated using delayed offer, which SIP message will UA#2 use to communicate its media capability to UA#1? 

A. INVITE 

B. 180 Ringing 

C. 200 OK 

D. ACK 

E. RTP Media 

Answer: C 


Q23. Which statement describes the key security service that is provided by the TLS Proxy function on a Cisco ASA appliance? 

A. It provides interworking to ensure that external IP phone traffic is encrypted, even if the rest of the system is unencrypted. 

B. It only applies to encrypted voice calls where both parties utilize encryption. 

C. It manipulates the call signaling to ensure that all media is routed via the adaptive security appliance. 

D. It enables internal phones to communicate with external phones without encryption. 

E. It protects Cisco Unified Communications Manager from rogue soft clients and attackers on the data VLAN. 

Answer: B 


Q24. Refer to the exhibit. 

In this high-availability Cisco IM and Presence deployment with three subclusters, the first user is assigned to server 1A; the second user is assigned to server 2A; and the third user is assigned to server 3A. Assume that Cisco IM and Presence is set to active-active mode. To which server will the fourth user be automatically assigned? 

A. 1A 

B. 3B 

C. 1B 

D. 2A 

E. 3A 

Answer: C 


Q25. Which statement describes the question mark wildcard character in a SIP trigger that is configured on Cisco Unity Express? 

A. It matches any single digit in the range 0 through 9. 

B. It matches one or more digits in the range 0 through 9. 

C. It matches zero or more occurrences of the preceding digit or wildcard value. 

D. It matches one or more occurrences of the preceding digit or wildcard value. 

E. It matches any single digit in the range 0 through 9, when used within square brackets. 

Answer: C 


Most recent 400-051:

Q26. A queued call has reached the maximum wait time configured for a Cisco Unified Communications Manager native call queue. 

Which statement about what happens to this queued call is true? 

A. Calls are handled according to the Forward Hunt No Answer settings on the Hunt Pilot configuration page. 

B. Calls are handled according to the When Maximum Wait Time Is Met settings on the Hunt Pilot Configuration page. 

C. Calls are handled according to the When Maximum Wait Time Is Met settings in Cisco Unified Communications Manager Service Parameters. 

D. Calls are handled according to the Not Available Hunt Option settings on the Line Group Configuration page. 

E. Calls are handled according to the When Queue Is Full settings on the Hunt Pilot Configuration page. 

Answer: B 


Q27. Which statement about accessing secure Cisco Unity Connection voice messages in an Exchange mailbox in a Single Inbox deployment is true? 

A. Users can listen to a secure voice message if they use the Outlook email client. 

B. Users can listen to a secure voice message if they use the Outlook email client with the ViewMail add-in. 

C. Users can listen to a secure voice message with email clients other than Outlook if they have installed the ViewMail add-in. 

D. Users cannot listen to a secure message in Exchange because it is not supported in Single Inbox. 

E. Secure voice messages are stored on the Cisco Unity Connection server and the Exchange server. 

Answer: B 


Q28. Which protocol does the Cisco Prime LAN Management Solution application use to communicate with Cisco EnergyWise domain members? 

A. UDP broadcast 

B. Cisco Discovery Protocol 

C. UDP unicast 

D. TCP 

E. multicast 

Answer: D 


Q29. Which two responses are examples of client error responses in SIP protocol? (Choose two.) 

A. 302 Moved Temporarily 

B. 404 Not Found 

C. 503 Service Unavailable 

D. 502 Bad Gateway 

E. 604 Does Not Exist Anywhere 

F. 408 Request Timeout 

Answer: BF 


Q30. Refer to the exhibit. 

All displayed devices are registered to the same Cisco Unified Communications Manager server and the phones are engaged in an active call. Assuming the provided configurations exist at the phone line level and multicast MOH is disabled clusterwide, what will happen when the user of IP Phone A presses the Transfer softkey? 

A. The IP Phone B user hears audio source 3 from MOH Server A. 

B. The IP Phone B user hears audio source 4 from MOH Server B. 

C. The IP Phone B user hears audio source 3 from MOH Server B. 

D. The IP Phone B user hears audio source 2 from MOH Server B. 

E. The IP Phone A user hears no on-hold music. 

Answer: C