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CCIE Collaboration Certification Exam

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December 4, 2024Last update

Cisco 400-051 Free Practice Questions

Q1. Which Cisco Unified Contact Center Express core system software component communicates with Cisco Agent Desktop for agent state control and call control? 

A. Unified CCX Engine 

B. Database 

C. Monitoring 

D. Recording 

E. RmCm 

Answer:

Q2. Which SIP header is used by Cisco Unified Communication Manager to support the Redirected Number ID Service? 

A. replaces 

B. RPID 

C. diversion 

D. join 

E. P-charging-vector 

Answer:

Q3. 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:

Q4. When DSP oversubscription occurs on a Cisco IOS router using DSP modules that are based on the C5510 chipset, what will happen when an analog phone connected to a FXS port goes off-hook? 

A. A fast busy tone will be played. 

B. A slow busy tone will be played. 

C. A network busy tone will be played. 

D. A dial tone will be played, but digits will not be processed. 

E. No tone will be played. 

Answer:

Q5. Refer to the exhibit. 

A user is going through a series of dialing steps on an SCCP IP phone (extension 1001) to call another SCCP IP phone (extension 2003). Both phones are registered to the same Cisco Unified Communications Manager cluster. Which user inputs are sent from the calling IP phone to the Cisco Unified Communications Manager, in forms of SCCP messages, after the user pressed the Dial softkey? Note that the commas in answer choices below are logical separators, not part of the actual user input or SCCP messages. 

A. A separate SCCP message is sent to Cisco Unified Communications Manager for each of the following user inputs: 2, 0, 0, 3. 

B. A separate SCCP message is sent to Cisco Unified Communications Manager for each of the following user inputs: 2, 0, 1, <<, 0, 3. 

C. A single SCCP message is sent to Cisco Unified Communications Manager to report that digits 2003 have been dialed. 

D. A single SCCP message is sent to Cisco Unified Communications Manager to report that digits 201<<03 have been dialed. 

E. A separate SCCP message is sent to Cisco Unified Communications Manager for each of the following user inputs: 2, 0, 1, <<, 2, 0, 0, 3. 

Answer:

Q6. The iLBC codec operates at 38 bytes per sample per 20-millisecond interval. What is its codec bit rate in kilobits per second? 

A. 6.3 

B. 13.3 

C. 15.2 

D. 16 

E. 24 

Answer:

Q7. Refer to the exhibit. 

You received this debug output to troubleshoot a Cisco IOS MGCP gateway problem at a customer site. What is the purpose of this message? 

A. The MGCP gateway uses this message to respond to an RQNT message from Cisco Unified Communications Manager. 

B. The MGCP gateway uses this message to respond to an AUCX message from Cisco Unified Communications Manager. 

C. The MGCP gateway uses this message to respond to an AUEP message from Cisco Unified Communications Manager. 

D. The MGCP gateway uses this message to respond to a DLCX message from Cisco Unified Communications Manager. 

E. The MGCP gateway uses this message to respond to an NTFY message from Cisco Unified Communications Manager. 

Answer:

Q8. Refer to the exhibit. 

How many SIP signaling transaction(s) took place in this SIP message exchange between two SIP user agents? 

A. 1 

B. 2 

C. 3 

D. 4 

E. 5 

F. 6 

Answer:

Q9. Which two enterprise presence domains can federate with Cisco IM and Presence by using SIP? (Choose two.) 

A. AOL 

B. Microsoft OCS 

C. IBM Sametime 

D. Cisco WebEx Connect 

E. Google Talk 

F. Cisco Unified Presence 8.X Releases 

Answer: AB 

Q10. Which two analog telephony signaling methods are most vulnerable to glare conditions? (Choose two.) 

A. FXS Loop-start 

B. FXO Ground-start 

C. E&M Wink-start 

D. E&M Delay-dial 

E. E&M Immediate-start 

F. E&M Feature Group D 

Answer: AE 

Q11. Which procedure uses H.225 messages to exchange H.245 Master-Salve Determination information? 

A. H.323 Fast Connect 

B. H.245 tunneling 

C. H.225 tunneling 

D. H.323 early media 

E. H.245 terminal capability set 

Answer:

Q12. Which two statements describe characteristics of Cisco Unified Border Element high availability, prior to Cisco IOS release 15.2.3T, using a box-to-box redundancy configuration? (Choose two.) 

A. It leverages HSRP for router redundancy and GLBP for load sharing between a pair of routers. 

B. Cisco Unified Border Element session information is check-pointed across the active and standby router pair. 

C. It supports media and signal preservation when a switchover occurs. 

D. Only media streams are preserved when a switchover occurs. 

E. It can leverage either HSRP or VRRP for router redundancy. 

F. The SIP media signal must be bound to the loopback interface. 

Answer: BD 

Q13. How are DTMF digits transported in RFC 2833? 

A. In the RTP stream with the named telephone events payload format. 

B. In the RTP stream with the regular audio payload format. 

C. In SIP NOTIFY messages. 

D. In SIP INFO messages. 

E. In SIP SUBSCRIBE messages. 

Answer:

Q14. Which statement about what happens to incoming calls to a Cisco Unified Communications Manager native call queue when no hunt members are logged in or registered 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 Not Available Hunt Option settings on the Line Group Configuration page. 

C. Calls are handled according to the Forward Hunt Busy settings on the Hunt Pilot configuration page. 

D. Calls are forward to the Forward Busy Calls To destination if configured; otherwise the calls are disconnected. 

E. Calls are handled according to the correspondent parameters under the Queuing section on the Hunt Pilot Configuration page. 

Answer:

Q15. In an effort to troubleshoot a caller ID delivery problem, a customer emailed you the voice port configuration on a Cisco IOS router. Which type of voice port is it? 

A. FXS 

B. E&M 

C. BRI 

D. FXO 

E. DID 

Answer:

Q16. To which SIP response class do the SIP response codes 300 to 399 belong? 

A. Provisional 

B. Client Failure 

C. Server Failure 

D. Successful 

E. Redirection 

Answer:

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