Cisco 642-457 Online Practice Questions and Exam Preparation

Cisco 642-457 Online Questions & Answers

• Question 21:

  What are two important considerations when implementing TEHO to reduce long-distance cost? (Choose two.)

  A. on-net calling patterns
  B. E911 calling
  C. number of route patterns
  D. caller ID
  B. E911 calling
  D. caller ID

• Question 22:

  What are the two tasks that you must perform to configure the Service Advertisement Framework forwarder in Cisco Unified Communications Manager? (Choose two.)

  A. create VPN groups
  B. create VPN profiles
  C. create a new Service Advertisement Framework security profile
  D. set feature configuration parameters of Call Control Discovery
  E. configure Service Advertisement Framework forwarder information
  F. enable enterprise parameter for Service Advertisement Framework forwarder
  C. create a new Service Advertisement Framework security profile
  E. configure Service Advertisement Framework forwarder information

• Question 23:

  Refer to the following exhibit.

  

  Which Cisco IOS SAF Forwarder configuration is correct?

  A. Exhibit A
  B. Exhibit B
  C. Exhibit C
  D. Exhibit D
  A. Exhibit A

• Question 24:

  Refer to the exhibit.

  

  Which configuration change is needed to enable NANP international dialing during MGCP fallback?

  A. Change the dial peer to dial-peer voice 901 voip.
  B. Change the dial peer to dial-peer voice 9011 pots.
  C. Add the command prefix 011 to the dial peer.
  D. Add the command prefix 9011 to the dial peer.
  C. Add the command prefix 011 to the dial peer.

• Question 25:

  Which action configures CAC utilizing only Cisco Unified Communications Manager software?

  A. Configure Cisco Unified Communications Manager regions.
  B. Configure Cisco Unified Communications Manager locations.
  C. Configure Cisco Unified Communications Manager RSVP-enabled locations.
  D. Configure Cisco Unified Communications Manager MTPs.
  B. Configure Cisco Unified Communications Manager locations.

• Question 26:

  Which device is needed to integrate H.320 into the Cisco video solution? (SourcE. Introducing IP Video Telephony)

  A. video gateway
  B. MGCP gateway
  C. H.323 gatekeeper
  D. MCU
  C. H.323 gatekeeper

• Question 27:

  Which statement about enrollment in the IP telephony PKI is true? (SourcE. Understanding Cisco IP Telephony Authentication and Encryption Fundamentals)

  A. CAPF enrollment supports the use of authentication strings.
  B. The CAPF itself has to enroll with the Cisco CTL client.
  C. LSCs are issued by the Cisco CTL client or by the CAPF.
  D. MICs are issued by the CAPF itself or by an external CA.
  A. CAPF enrollment supports the use of authentication strings.

• Question 28:

  To preserve analog calls in an MGCP switchback event, which three commands must be configured in the MGCP fallback router? (Choose three.)

  A. h323
  B. mgcp-switchback-graceful
  C. voice service voip
  D. mgcp-graceful
  E. preserve-h323
  F. no h225 timeout keepalive
  A. h323
  C. voice service voip
  F. no h225 timeout keepalive

• Question 29:

  Refer to the exhibit

  

  When the Cisco Unified Communications Manager advertises the Hosted DN Pattern, which pattern would be advertised?

  A. 2XXX and the T0D1D will be 0:+498950555
  B. 2XXX and the ToDID will be 0:+4989531 21
  C. 4989S05552XXX and the ToDiD will be 0:
  D. + 4989631 21 2XXX and the ToDiD will be 0:
  E. Both +4989505552XXXand +4989531 21 2XXX will be advertised with ToDID of 0:
  A. 2XXX and the T0D1D will be 0:+498950555

• Question 30:

  Which action configures PSTN backup for calls that are rejected by the gatekeeper CAC?

  A. Configure AAR in Cisco Unified Communications Manager.
  B. Configure CFUR in Cisco Unified Communications Manager.
  C. Configure a route pattern, a route list, and route groups to a trunk and a gateway in Cisco Unified Communications Manager.
  D. Configure a route pattern to a gateway in Cisco Unified Communications Manager.
  C. Configure a route pattern, a route list, and route groups to a trunk and a gateway in Cisco Unified Communications Manager.