Cisco 642-457 Online Practice Questions and Exam Preparation

Cisco 642-457 Online Questions & Answers

• Question 121:

  When Cisco Extension Mobility is implemented, how is the audio source for the MOH selected?

  A. The audio source that is configured at the user device profile is selected.
  B. The audio source that is configured at the home phone of the user is selected.
  C. The audio source that is configured at the physical phone used for the Cisco Extension Mobility login is selected.
  D. The audio source that is configured in the IP Voice Media Streaming parameters is selected.
  A. The audio source that is configured at the user device profile is selected.

• Question 122:

  In a Cisco Unified Communications Manager centralized call processing model, what is the best CAC method recommended for this type of deployment?

  A. QoS-based
  B. location-based
  C. RSVP-based
  D. region-based
  E. gateway-based
  F. gatekeeper-based
  B. location-based

• Question 123:

  In what Cisco solution is Simple Network-Enabled Auto Provision technology used?

  A. Cisco Unified Gateway Duplication
  B. Cisco Unified CallManager Redundancy
  C. Cisco Unified SRST
  D. Cisco Unified Call Survivability
  C. Cisco Unified SRST

• Question 124:

  Which command is needed to utilize local dial peers on an MGCP-controlled ISR during an SRST failover?

  A. ccm-manager fallback-mgcp
  B. telephony-service
  C. dialplan-pattern
  D. isdn overlap-receiving
  E. voice-translation-rule
  A. ccm-manager fallback-mgcp

• Question 125:

  Refer to the exhibit.

  

  A PSTN call arrived at the MGCP gateway. The calling number was received as 14087071222 with number set to type international. The HQ_clng__pty_CSS contains the HQ_clng_pty__Pt partition. Which caller ID is displayed on the IP phone?

  A. +087071222
  B. 14087071222
  C. 087071222
  D. 4087071222
  E. 14087071222
  C. 087071222

• Question 126:

  Refer to the exhibit.

  

  Which CSS is used at the HQ Cisco Unified Communications Manager to reroute calls via the PSTN when the SAF network is unavailable?

  A. the phone device CSS
  B. the phone line CSS
  C. the phone line/device combined CSS
  D. the SAF CSS configured on the CCD requesting service
  E. the phone AAR CSS configured at the phone device
  F. No special CSS is required. If SAF patterns are accessible, the PSTN reroute is automatic.
  E. the phone AAR CSS configured at the phone device

• Question 127:

  What is the purpose of the local route group?

  A. minimize PSTN costs
  B. help in the selection of the PSTN egress gateway
  C. eliminate the need for a route list
  D. allow manipulation of digits at the cost point to egress
  B. help in the selection of the PSTN egress gateway

• Question 128:

  Refer to the exhibit.

  

  Locations-based CAC has been configured between HQ and the BR site. Assume that the priority queue has been provisioned correctly for three G.729 calls. What happens when the fourth call is placed from HO to BR?

  A. The call will get through via the WAN. but it will experience poor audio quality.
  B. The call will fail.
  C. The call will be queued until one of the existing calls drop.
  D. The call will get through without any issues.
  B. The call will fail.

• Question 129:

  When implementing a dial plan for multisite deployments, what must be present for SRST to work successfully?

  A. dial peers that address all sites in the multisite cluster
  B. translation patterns that apply to the local PSTN for each gateway
  C. incoming and outgoing COR lists
  D. configuration of the gateway as an MGCP gateway
  B. translation patterns that apply to the local PSTN for each gateway

• Question 130:

  Which command can be used to manually send the MGCP gateway to register with the secondary Cisco Unified Communications Manager server?

  A. ccm-manager switchover-to-backup
  B. mgcp use backup
  C. ccm-manager register backup
  D. not supported
  A. ccm-manager switchover-to-backup