Cisco 642-457 Online Practice Questions and Exam Preparation

Cisco 642-457 Online Questions & Answers

• Question 141:

  Which two statements about international multisite dial plans are true? (Choose two.)

  A. TEHO is legal in all countries.
  B. TEHO is legal in most countries, but illegal in others.
  C. TEHO reduces WAN utilization.
  D. TEHO utilizes WAN links.
  B. TEHO is legal in most countries, but illegal in others.
  D. TEHO utilizes WAN links.

• Question 142:

  Which technologies provide remote-site redundancy for Cisco IP Phones during a WAN failure?

  A. SRST and MGCP fallback
  B. SRST and TEHO
  C. TEHO and MGCP fallback
  D. SRST and AAR
  A. SRST and MGCP fallback

• Question 143:

  Which device is used to connect to the H.323 gatekeeper?

  A. H.323 gateway
  B. SIP trunk
  C. H.323 trunk
  D. MGCP gateway
  C. H.323 trunk

• Question 144:

  Which statement is correct about AAR?

  A. The end users sees, "Network Congestion Rerouting?" but AAR is otherwise transparent to the end user and works without user intervention.
  B. AAR will display "not enough bandwidth" on the IP phone while it reroutes the call.
  C. AAR allows calls to be rerouted because of insufficient Cisco Unified Border Element controlled bandwidth to an ITSP.
  D. AAR allows calls to be rerouted due to insufficient gatekeeper controlled IP WAN bandwidth.
  A. The end users sees, "Network Congestion Rerouting?" but AAR is otherwise transparent to the end user and works without user intervention.

• Question 145:

  How are Cisco IP Phones directly configured to utilize local route groups?

  A. with Cisco Unified Communications Manager device pools
  B. with Cisco Unified Communications Manager CSS and partitions
  C. with Cisco Unified Communications Manager regions
  D. with Cisco Unified Communications Manager locations
  E. with Cisco Unified Communications Manager AAR
  A. with Cisco Unified Communications Manager device pools

• Question 146:

  Which two are gatekeeper-controlled trunk options that support gatekeeper call administration control? (Choose two.)

  A. H.323
  B. H.245
  C. H.225
  D. intercluster
  E. intracluster
  C. H.225
  D. intercluster

• Question 147:

  Refer to the exhibit.

  

  Assume that NANP is being used and 9 is used for PSTN access code Long distance national calls are preceded with 1.

  How should the HQ Cisco Unified Communications Manager be configured for calls to 3XXX to be sent to the gatekeeper at 1 0 1 6 1 with PSTN backups?

  A. Configure a route pattern for 3XXX Assign this route pattern to a route list that points to two route groups The first route group contains the H 225 trunk The second route group contains the MGCP gateway with prefix digits 1 408555 for the outgoing called number.
  B. Configure a route pattern for 1#3XXX Assign this route pattern to a route list that points to a route group that lists the H 225 trunk as first choice and the MGCP gateway as a second choice.
  C. Configure a route pattern for 4085543XXX. Assign this route pattern to a route list that points to two route groups. The first route group contains the H 226 trunk The second route group contains MGCP gateway.
  D. Configure a route pattern for 3XXX Assign this route pattern to a route list that points to two route groups The first route group contains the H 225 trunk The second route group contains MGCP gateway with prefix digits 91 408554 for the called number.
  A. Configure a route pattern for 3XXX Assign this route pattern to a route list that points to two route groups The first route group contains the H 225 trunk The second route group contains the MGCP gateway with prefix digits 1 408555 for the outgoing called number.

• Question 148:

  While configuring Call Survivability in Cisco Unified Communications Manager, what step is mandatory to reach remote sites while in SRST mode?

  A. Enable Cisco Remote Site Reachability.
  B. Configure CFUR.
  C. Enable the SRST checkbox in the MGCP gateway.
  D. Configure the H.323 gateway for SRST in Cisco Unified Communications Manager.
  E. Enable the Failover Service parameter.
  B. Configure CFUR.

• Question 149:

  Refer to the exhibit.

  

  The HQ site uses area code 650. The BR1 site uses area code 408. The long distance national code for PSTN dialing is 1. To make a long distance national call, an HQ or BR1 user dials access code 9, followed by 1, and then the 10-digit

  number.

  Both sites use MGCP gateways. AAR must use globalized call routing using a single route pattern. Assume that all outgoing PSTN numbers are localized at the egress gateway as shown in the exhibit.

  Which partition should be configured in the AAR CSS applied at the phones?

  A. PSTN partition
  B. LD partition
  C. The HQ AAR CSS must include a partition assigned to route pattern 91408XXXXXXX. The BR1 AAR CSS must include a partition assigned to route pattern 91650XXXXXXX.
  D. AAR CSS must contain translation pattern 9.1[2-9]XX[2-9]XXXXXX for each site that must be globalized. Otherwise the called numbers will not be localized at the egress gateway.
  A. PSTN partition

• Question 150:

  Which remote-site redundancy technology fails over to POTS dial peers from the Cisco Unified Communications Manager dial plan during a WAN failure?

  A. MGCP fallback
  B. H.323 fallback
  C. SCCP fallback
  D. SIP fallback
  A. MGCP fallback