Cisco 642-427 Online Practice Questions and Exam Preparation

Cisco 642-427 Online Questions & Answers

• Question 41:

  Refer to the exhibit.

  

  

  

  

  When an HQ caller places a call to extension 4001 the phone at BR2 rings. Alter the user at BR2 goes off hook, the call is disconnected. Examine the debug voice ccapi coice inout command output. What caused this issue?

  A. The BR2 router does not have a matching inbound dial peer.
  B. There is a codec mismatch between the source and destination. Codec negotiation failed
  C. The BR2 router is sending the call to dial-peer 20003 which is a POTS dial-peer.
  D. The destination phone is not registered.
  B. There is a codec mismatch between the source and destination. Codec negotiation failed

• Question 42:

  Which codec complexity type will offer the greatest number of voice channels, provided that the complexity type is compatible with the particular codecs that are in use?

  A. low complexity
  B. medium complexity
  C. high complexity
  D. flex complexity
  A. low complexity

• Question 43:

  You have received a trouble ticket stating that an IP phone is not working. When asked, the user informs you the phone is displaying the message "Registration rejected." Which two issues are possible causes of this problem? (Choose two.)

  A. The IP phone is not getting an IP address.
  B. The IP phone's primary Cisco Unified CallManager has a database replication issue.
  C. The primary Cisco Unified CallManager is unavailable and the CallManager group assigned to the IP phone does not include a secondary CallManager.
  D. The IP phone has not been defined in Cisco Unified CallManager.
  E. The IP phone is not associated with a valid user profile.
  B. The IP phone's primary Cisco Unified CallManager has a database replication issue.
  D. The IP phone has not been defined in Cisco Unified CallManager.

• Question 44:

  Drag the tool from left and drop it under the category is associated with in Cisco United Communications Manager.

  Select and Place:

  

  

• Question 45:

  Refer to the exhibit. You have received a trouble ticket that users cannot place calls to the PSTN. During testing you discover the gateway is not switching to the secondary call agent when the primary call agent is unreachable.

  What needs to be done to allow the MGCP gateway to use a different call agent if the primary fails?

  

  A. The ccm-manager fallback-mgcp command needs to be added to the gateway.
  B. The ccm-manager redundant-host command needs to be added to the gateway.
  C. A Cisco Unified CallManager group that includes the secondary call agent needs to be assigned to the gateway.
  D. The gateway needs to be defined as a non-gatekeeper-controlled intercluster trunk with the secondary Cisco Unified CallManager defined.
  B. The ccm-manager redundant-host command needs to be added to the gateway.

• Question 46:

  You have placed all DNs in the Phones partition. During testing you discover that you cannot place calls between IP phones, but you can place calls to the PSTN and voice mail. What is one possible cause of this issue?

  A. A database replication issue is preventing calls between phones.
  B. An access list is blocking RTP streams in your voice VLAN.
  C. An access list is blocking SCCP packets in your voice VLAN.
  D. The IP phones have not been assigned a CSS.
  D. The IP phones have not been assigned a CSS.

• Question 47:

  Please choose the function of an H.323 gateway from the following items.

  A. Converts an alias address to an IP address
  B. Responds to bandwidth requests and modifications
  C. Transmits and receives G.711 PCM-encoded voice
  D. Performs translation between audio, video, and data formats
  D. Performs translation between audio, video, and data formats

• Question 48:

  Refer to the exhibit.

  

  The exhibit shows the output of a successful RSVP call setup that uses G.729 codec. What should the minimum bandwidth configuration on interface serial 0/1/0.121 for the command ip rsvp bandwidth be?

  A. 8 Kb/S B. 16 Kb/S
  C. 24 Kb/S
  D. 32 Kb/S
  E. 40 Kb/S
  E. 40 Kb/S

• Question 49:

  Cisco CallManager 5.0 has just been deployed in two locations across a wide-area link. A distributed model with an intercluster trunk has been used. When you call an IP phone at the remote site the phone rings, but as soon as the other person picks up the phone, the call is dropped.

  Where should you look to diagnose the problem?

  A. locations
  B. system parameters
  C. media resource group
  D. Cisco Unified CallManager group
  E. Cisco Unified CallManager CTI traces
  C. media resource group

• Question 50:

  A remote customer site cannot make or receive offnet calls. What is the problem?

  A. A problem exists between the phone and gateway.
  B. Codec issue exists and regions must be checked.
  C. The Cisco 7965 phone is configured wrong.
  D. The PRI circuit is down.
  D. The PRI circuit is down.