Cisco 642-457 Online Practice Questions and Exam Preparation

Cisco 642-457 Online Questions & Answers

• Question 111:

  Which action configures phones in site A to use G.711 to site B but to use G.729 to site C?

  A. Configure Cisco Unified Communications Manager regions.
  B. Configure Cisco Unified Communications Manager locations.
  C. Configure transcoder resources in Cisco Unified Communications Manager.
  D. Configure a gatekeeper.
  A. Configure Cisco Unified Communications Manager regions.

• Question 112:

  When a SIP trunk is added for Call Control Discovery, which statement is true?

  A. The SIP trunk is added by selecting SIP Trunk and SIP Protocol. The Enable SAF check box should be selected.
  B. The SIP trunk is added by selecting SIP Trunk and SIP Protocol. The Trunk Service Type should be Call Control Discovery.
  C. The SIP trunk is added by selecting Call Control Discovery Trunk and then selecting SIP as the protocol to be used.
  D. The SIP trunk is added by selecting SIP Trunk and SIP Protocol. The destination IP address field is configured as `SAF' to indicate that this trunk is used for SAF.
  B. The SIP trunk is added by selecting SIP Trunk and SIP Protocol. The Trunk Service Type should be Call Control Discovery.

• Question 113:

  Cisco Unified Communications Manager is configured with CAC for a maximum of 10 voice calls.

  Which action routes the 11th call through the PSTN?

  A. Configure an SIP trunk to the ISR.
  B. Configure Cisco Unified Communications Manager AAR.
  C. Configure Cisco Unified Communications Manager RSVP-enabled locations.
  D. Configure Cisco Unified Communications Manager locations.
  B. Configure Cisco Unified Communications Manager AAR.

• Question 114:

  Which statement about Service Advertisement Framework is true?

  A. SAF requires that the EIGRP be configured on all routers, including non-SAF routers.
  B. SAF requires that the EIGRP be configured only on SAF routers. Non-SAF routers act as an IP cloud.
  C. SAF has no dependency on the underlying routing protocol, as long as it is a dynamic routing protocol. Static routes are not supported.
  D. SAF operates on any dynamic or static IP routing configuration. SAF is totally independent of the underlying routing protocol.
  D. SAF operates on any dynamic or static IP routing configuration. SAF is totally independent of the underlying routing protocol.

• Question 115:

  Which action is performed by the Media Gateway Control Protocol gateway when it loses connectivity with the primary and backup Cisco Unified Communications Manager servers?

  A. The gateway continues to make an attempt to connect to the backup Cisco Unified Communications Manager server.
  B. The gateway falls back to the H.323 protocol for further call processing.
  C. The gateway continues with the MGCP call processing without any interruption.
  D. The gateway waits for the primary Cisco Unified Communications Manager server to come alive.
  E. All MGCP call processing is interrupted until the Cisco Unified Communications Manager servers are online.
  F. The MGCP calls are queued up until the Cisco Unified Communications Manager servers are online.
  B. The gateway falls back to the H.323 protocol for further call processing.

• Question 116:

  The relationship between a Region and a Location is that the Region codec parameter is used between a Region and its configured Locations.

  A. TRUE
  B. FALSE
  B. FALSE

• Question 117:

  Refer to the exhibit.

  

  When the user of a phone registered to the Cisco Unified Communications Manager places a call to 3001 when the SAF network is down, what happens?

  A. The call fails.
  B. The call is rerouted to the PSTN with the constructed PSTN number as +442288223001
  C. The call is rerouted to the PSTN with the constructed PSTN number as 442288223001
  D. The call is rerouted to the PSTN with the constructed PSTN number as 0002288223001
  E. The call is rerouted to the PSTN with the constructed PSTN number as +0002288223001
  A. The call fails.

• Question 118:

  Click and drag the minimum Cisco Unified SRST configured steps on the left to the spaces on the right. Not all spaces on the right are used.

  Select and Place:

  

  

• Question 119:

  Refer to the exhibit.

  

  Multicast MOH needs to be run from flash at the remote site. Which Cisco IOS configuration at the SRST router is correct?

  A. ! call-manager-fallback ip source-address 10.1.5.102 port 2000 max-ephones 2 max-dn 8 dual-line moh music-on-hold au multicast moh 239.1.1.1 port 16384
  B. ! call-manager-fallback ip source-address 10.1.5.102 port 2000 max-ephones 2 max-dn 8 dual-line moh music-on-hold au multicast moh 239.1.1.1 port 163t
  C. call-manager-fallback ip source-address 10.1.120.1 port 2000 max-ephones 2 max-dn 8 moh music-on-hold.au multicast moh 239.1.1.1 port 32767
  D. ! call-manager-fallback ip source-address 10.1.5.102 port 2000 max-ephones 2 max-dn 8 dual-line moh music-on-hold an multicast moh 239.1.1.1 port 32767
  A. ! call-manager-fallback ip source-address 10.1.5.102 port 2000 max-ephones 2 max-dn 8 dual-line moh music-on-hold au multicast moh 239.1.1.1 port 16384

• Question 120:

  Which option describes the reason that transcoding resources are added in Cisco Unified Communications Manager?

  A. to enable transcoding resources in a Cisco Unified Communications Manager server
  B. to enable Cisco Unified Communications Manager to select the optimal single codec for end- to-end calls
  C. to enable transcoding resources in Cisco IP Phones
  D. to provide transcoding resources in Cisco IOS gateways to Cisco Unified Communications Manager
  D. to provide transcoding resources in Cisco IOS gateways to Cisco Unified Communications Manager