Cisco 642-457 Online Practice Questions and Exam Preparation

Cisco 642-457 Online Questions & Answers

• Question 61:

  Refer to the exhibit.

  

  Which trunks would be most suitable for Connection Y?

  A. an H.225 trunk (gatekeeper-controlled)
  B. intercluster trunk (gatekeeper-controlled)
  C. a SIP trunk on the U.S. cluster and an intercluster trunk on the remote cluster
  D. intercluster trunk (nongatekeeper-controlled)
  E. No extra connections are required. As long as IP connectivity exists, you need only configure a route pattern for each site. The Cisco Unified Communications Manager will automatically forward the calls over the WAN if the destination directory number is not registered locally.
  D. intercluster trunk (nongatekeeper-controlled)

• Question 62:

  When an H.323 trunk is added for Call Control Discovery, which statement is true?

  A. The H.323 trunk is added by selecting Inter-Cluster Trunk (Non-Gatekeeper Controlled) and Device Protocol Inter-Cluster Trunk. The Enable SAF check box should be selected in the trunk configuration.
  B. The H.323 trunk is added by selecting Inter-Cluster Trunk (Non-Gatekeeper Controlled) and Device Protocol Inter-Cluster Trunk. The Trunk Service Type should be Call Control Discovery.
  C. The H.323 trunk is added by selecting Call Control Discovery Trunk and then selecting H.323 as the protocol to be used.
  D. The H.323 trunk is added by selecting H.323 Trunk, and selecting Inter-Cluster Trunk as the Device Protocol. The destination IP address field is configured as `SAF' to indicate that this trunk is used for SAF.
  A. The H.323 trunk is added by selecting Inter-Cluster Trunk (Non-Gatekeeper Controlled) and Device Protocol Inter-Cluster Trunk. The Enable SAF check box should be selected in the trunk configuration.

• Question 63:

  Which commands are needed to configure Cisco Unified Communications Manager Express in SRST mode?

  A. telephony-service and srst mode
  B. telephony-service and moh
  C. call-manager-fallback and srst mode
  D. call-manager-fallback and voice-translation
  A. telephony-service and srst mode

• Question 64:

  Which two entities could be represented by device mobility groups? (Choose two.)

  A. countries
  B. regions
  C. directory numbers
  D. transcoders
  A. countries
  B. regions

• Question 65:

  Which statement is true when considering a Cisco VoIP environment for regional configuration?

  A. G.711 requires 128K of bandwidth per call.
  B. G.729 requires 24K of bandwidth per call.
  C. The default codec does not matter if you have defined a hardware MTP in your Cisco Unified Communications Manager environment.
  D. To deploy a Cisco H.323 gatekeeper, you must configure MTP resources on the gatekeeper and only use G.711 between regions.
  C. The default codec does not matter if you have defined a hardware MTP in your Cisco Unified Communications Manager environment.

• Question 66:

  Refer to the exhibit.

  

  Which configuration elements must match for adjacent neighbors to establish a SAF neighbor relationship?

  A. the label name specified in the router eigrp command
  B. the autonomous-system number specified in the service-family ipv4 autonomous-system command
  C. the sf-interface configuration
  D. the topology base configurations
  E. the label name specified in the router eigrp command and the autonomous-system number
  B. the autonomous-system number specified in the service-family ipv4 autonomous-system command

• Question 67:

  Refer to the exhibit.

  

  To permit three G.729 calls, what should the bandwidth value be for the ip rsvp bandwidth command?

  A. 32
  B. 48
  C. 64
  D. 88
  E. 128
  D. 88

• Question 68:

  Refer to the exhibit

  

  The exhibit shows a SAF Forwarder configuration attached to a Cisco Unified Communications Manager. Which minimum configuration for a Cisco Unified Communications Manager Express SAF Forwarder is needed to establish a SAF neighbor relationship with this SAF Forwarder?

  A. router eigrp SAF i service-family ipv4 autonomous-system 1 ! topology base exit-sf-topology exit-service-family voice service saf profile trunkroute 1 session protocol sip interface Loopback1 transport tcp port 5060 !
  B. router eigrp SAF ! service-family ipv4 autonomous-system 1 ! topology base exit-sf-topology exit- service-family ! voice service saf profile trunk-route 1 session protocol sip interface Loopback1 transport tcp port 5060 ! profile dn-block 1 alias-prefix 1972555 pattern 1 type extension 4xxx ! profile callcontrol 1 dn-service trunk-route 1 dn-block 1 dn-block 2 ! channel 1 vrouter SAF asystem 1 subscribe callcontrol wildcarded publish callcontrol 1 !
  C. router eigrp SAF ! service-family ipv4 autonomous-system 1 ! topology base exit-sf-topology exit-service-family !
  D. None of above configurations contain sufficient information.
  C. router eigrp SAF ! service-family ipv4 autonomous-system 1 ! topology base exit-sf-topology exit-service-family !

• Question 69:

  How does the system intelligently shift call processing upon restoration of WAN connectivity?

  A. automatically back to the primary Cisco Unified Communications Manager cluster
  B. manually back to the primary Cisco Unified Communications Manager cluster
  C. automatically back to the secondary Cisco Unified Communications Manager cluster
  D. manually back to the secondary Cisco Unified Communications Manager cluster
  A. automatically back to the primary Cisco Unified Communications Manager cluster

• Question 70:

  Which two statements are true regarding the implementation of globalized call-routing in terms of localized call egress? (Choose two.)

  A. Calling-party numbers are routed from the gateway or trunks to phones.
  B. Called-party numbers are routed from the gateway or trunks to phones.
  C. Calling-party numbers of internal calls are routed from the gateway or trunks.
  D. Calling-party calls are routed to the gateway and trunks.
  A. Calling-party numbers are routed from the gateway or trunks to phones.
  D. Calling-party calls are routed to the gateway and trunks.