Cisco 400-051 Online Practice Questions and Exam Preparation

Cisco 400-051 Online Questions & Answers

• Question 541:

  Refer to the exhibit.

  

  A user is going through a series of dialing steps on a SIP Type B IP phone (for example, a Cisco 7975) to call an SCCP IP phone. Both phones are registered to the same Cisco Unified Communications Manager cluster. Assuming the calling SIP phone is associated with a SIP Dial Rule with a pattern value of 2001, which statement about the call setup process of this call is true?

  A. Each digit will arrive at Cisco Unified Communications Manager in a SIP NOTIFY message as a KPML event, and Cisco Unified Communications Manager will extend the call as soon as the collected digits match the extension of the SCCP IP phone, bypassing class of service configuration on both IP phones.
  B. Each digit will arrive at Cisco Unified Communications Manager in a SIP NOTIFY message as a KPML event. When the collected digits match the extension of the SCCP IP phone, Cisco Unified Communications Manager will extend the call only if the class of service configuration on both phones permits this action.
  C. As soon as the user selects the Dial softkey, the SIP IP phone will forward all digits to Cisco Unified Communications Manager in a SIP INVITE message. Cisco Unified Communications Manager will extend the call as soon as the collected digits match the extension of the SCCP IP phone, bypassing class of service configuration on both IP phones.
  D. As soon as the user selects the Dial softkey, the SIP IP phone will forward all digits to Cisco Unified Communications Manager in a SIP INVITE message. Cisco Unified Communications Manager will extend the call only if class of service configuration on both phones permits this action.
  E. The SIP IP phone will wait for the interdigit timer to expire, and then send all digits to Cisco Unified Communications Manager in a SIP INVITE message. Cisco Unified Communications Manager will extend the call as soon as the collected digits match the extension of the SCCP IP phone, bypassing class of service configuration on both IP phones.
  D. As soon as the user selects the Dial softkey, the SIP IP phone will forward all digits to Cisco Unified Communications Manager in a SIP INVITE message. Cisco Unified Communications Manager will extend the call only if class of service configuration on both phones permits this action.

  ---

  Cisco Type B SIP Phones offer functionality based SIP INVITE Message. Every key the end user presses triggers an individual SIP message. The first event is communicated with a SIP INVITE, but subsequent messages use SIP NOTIFY messages. The SIP NOTIFY messages send KPML events corresponding to any buttons or soft keys pressed by the user. Cisco Type B SIP IP Phones with SIP dial rules operate in the same manner as Cisco Type A phones with dial rules.

• Question 542:

  Refer to the exhibit.

  

  Which option describes how this Cisco IOS SIP gateway, with an analog phone attached to its FXS port, handles an incoming informational SIP 180 response message with SDP?

  A. It will take the FXS port offhook.
  B. It will generate local ring back
  C. It will terminate the call because this is an unsupported message format.
  D. It will enable early media cut-through.
  E. It will do nothing because the message is informational.
  B. It will generate local ring back

• Question 543:

  Which device is the initiator of a StationD message in a Cisco Unified Communications Manager SDI trace?

  A. SCCP IP phone
  B. SIP IP phone
  C. Cisco Unified Communications Manager
  D. MGCP analog gateway
  E. digital voice gateway
  C. Cisco Unified Communications Manager

  ---

  All messages to and from a skinny device are preceded by either the words StationD or StationInit. StationD messages are sent from call manager to IP phone. Skinny message transmission such as this between the IP phone and CallManger occurs for every action undertaken by the IP phone, includinginitialization, registration, on-hook, off-hook, dialing of the digits, key press on the phone, and so much more.

• Question 544:

  Refer to the exhibit.

  

  Assume the B-ACD configuration on a Cisco IOS Cisco Unified Communications Manager Express router is operational. What will happen to a new call that enters the call queue when there are already two calls in queue?

  A. The call will be forwarded to extension 2120.
  B. The call will be forwarded to extension 2220.
  C. The call will be forwarded to extension 2003.
  D. The call will be disconnected with user busy.
  E. The call will be forwarded to 2100.
  C. The call will be forwarded to extension 2003.

  ---

  That is because queue over flow is forwarded to 2003 and maximum number of calls in queue is configured as two.

• Question 545:

  Which option describes what happens to the local copies of Call Detail Records files on the Cisco Unified CM subscribers after they are transferred to the publisher?

  A. They will be compressed and backed up.
  B. They will be deleted.
  C. They will be deleted only after the subscriber received notification that the publisher has also deleted the correspondent files.
  D. They will remain on the subscriber server until overwritten by new CDR files.
  E. They will be compressed and then stored on the subscriber servers.
  B. They will be deleted.

• Question 546:

  A customer is planning to deploy a clustering over the WAN UCM topology with two subscribers at Site 1 and two subscribers at Site 2. How much bandwidth would be required between Site 1 and Site 2 for database replication?

  

  A. 1.544 Mbps
  B. 3.099 Mbps
  C. 4.632 Mbps
  D. 6.176 Mbps
  E. 7.772 Mbps
  C. 4.632 Mbps

• Question 547:

  Which codec is supported on the Cisco PVDM2 DSP modules but not on the PVDM3 DSP modules?

  A. G.728
  B. G.729B
  C. G.729AB
  D. G.723
  E. G.726
  D. G.723

  ---

  All codecs that are supported on the PVDM2 are supported on the PVDM3, except that the PVDM3 does not support the G.723 (G.723.1 and G.723.1A) codecs. The PVDM2 can be used to provide G.723 codec support or the G.729 codec can be as an alternative on the PVDM3

  References: http://www.cisco.com/c/en/us/td/docs/routers/access/1900/software/configuration/guide/Software_Configuration/pvdm3_config.html

• Question 548:

  Refer to the exhibit.

  

  Ephone 1 has three active calls. The first two calls were inbound calls, which the user put on hold to place a third call outbound. What will happen on ephone 1 when a fourth call arrives for extension 2001?

  A. The fourth call will be delivered to ephone 1 because it only received two inbound calls, one call less than the busy-trigger-per-button setting.
  B. The fourth call will be delivered to ephone 1 because the huntstop channel setting is not yet saturated.
  C. The fourth call will be delivered to ephone 1 because it can handle up to five calls on each button.
  D. The fourth call will be held temporarily by the IOS Software until ephone 1 disconnects one of the active calls.
  E. The fourth call will not be delivered and the caller will hear a user busy tone.
  E. The fourth call will not be delivered and the caller will hear a user busy tone.

  ---

  Because on line maximum 4 calls can be placed when user put the call on hold is consume a channel and reach the maximum number of calls on line.

• Question 549:

  Which two options are Power Save configuration parameters for Cisco 9971 IP Phones? (Choose two.)

  A. Phone On Time
  B. Phone Off Idle Timeout
  C. Day Display Not Active
  D. Enable Audio Alert
  E. Enable Power Save Plus
  F. Display on Duration
  C. Day Display Not Active
  F. Display on Duration

• Question 550:

  Refer to the exhibit. Which of the following domain must be configured on the Expressway C in a multidomain MRA setup?

  

  A. Domain1 only
  B. Domain1 and Domain4
  C. Domain1 and Domain2
  D. Domain2 only
  E. Domain4 only
  B. Domain1 and Domain4