Cisco 642-457 Online Practice Questions and Exam Preparation

Cisco 642-457 Online Questions & Answers

• Question 171:

  Video calls using 384 kbps need to be supported across a gatekeeper-controlled trunk. What value should be entered into the gatekeeper to support this bandwidth? (SourcE. Configuring Cisco Unified Video Advantage)

  A. 768 kbps
  B. 384 kbps
  C. 512 kbps
  D. 192 kbps
  B. 384 kbps

• Question 172:

  You are the Cisco Unified Communications Manager in Certpaper.com. You use a remote site MGCP gateway to provide redundancy when connectivity to the central Cisco Unified Communications Manager cluster is lost. How to enable IP phones to establish calls to the PSTN when they have registered with the gateway? (Choose three.)

  A. POTS dial peers must be added to the gateway to route calls from the IP phones to the PSTN.
  B. The default service must be enabled globally.
  C. The command ccm-manager mgcp-fallback must be configured.
  D. COR needs to be configured to disallow outbound calls.
  A. POTS dial peers must be added to the gateway to route calls from the IP phones to the PSTN.
  B. The default service must be enabled globally.
  C. The command ccm-manager mgcp-fallback must be configured.

• Question 173:

  Refer to the following exhibits.

  

  Users in the U.S dial Germany by calling 9011 49 followed by the remaining digits. What would be the most suitable configuration for Connection X?

  A. Configure a SIP trunk to 10.140.1.1 and a SIP route pattern +49T in Cisco Unified Communications Manager.
  B. Configure a SIP trunk to the Cisco Unified Border Element and route pattern +49T in Cisco Unified Communications Manager.
  C. configure a SIP trunk to the Cisco Unified Border Element. Configure a translation pattern for 9011.49T using DDI Predot prefix + and CSS to point to a route pattern partition \+! which uses the SIP trunk.
  D. Configure a SIP trunk to the ITSP. Configure a translation pattern for 9011.49T using DDI predot prefix + and CSS to point to a route pattern partition \+! which uses the SIP trunk.
  C. configure a SIP trunk to the Cisco Unified Border Element. Configure a translation pattern for 9011.49T using DDI Predot prefix + and CSS to point to a route pattern partition \+! which uses the SIP trunk.

• Question 174:

  You want to perform Media Control Gateway Protocol gateway maintenance. For this purpose, you disable Media Control Gateway Protocol gateway using the no mgcp command. After you perform the maintenance, you want to enable the Media Control Gateway Protocol gateway. Which command should you use?

  A. enable mgcp
  B. mgcp
  C. mgcp enable
  D. mgcp yes
  E. activate mgcp
  F. mgcp active
  B. mgcp

• Question 175:

  What happens if location-based CAC is used and there is no bandwidth available when a remote caller is placed on hold?

  A. Cisco Unified Communications Manager sends TOH rather than MOH.
  B. Cisco Unified Communications Manager terminates the call.
  C. Cisco Unified Communications Manager plays default MOH.
  D. Cisco Unified Communications Manager attempts to reconnect the call immediately.
  A. Cisco Unified Communications Manager sends TOH rather than MOH.

• Question 176:

  When an incoming PSTN call arrives at an MGCP gateway, how does the called number get normalized to an internal directory number in Cisco Unified Communications Manager?

  A. Normalization is done by configuring the significant digits for inbound calls on the MGCP gateway.
  B. Normalization is done using route patterns.
  C. Normalization is done using the gateway incoming called party prefixes based on number type.
  D. Normalization is done using the gateway incoming calling party prefixes based on number type.
  E. Normalization is achieved by local route group that is assigned to the MGCP gateway.
  A. Normalization is done by configuring the significant digits for inbound calls on the MGCP gateway.

• Question 177:

  A Cisco Unified Communications Manager cluster is installed in headquarters only.

  How can international calls be blocked while national calls are allowed for branch office Cisco IP Phones during a WAN failure?

  A. Configure CSS and partitions in Cisco Unified Communications Manager and apply the CSS and partitions to the SRST ISR.
  B. Configure CSS and partitions in the SRST ISR.
  C. Configure COR in the SRST ISR.
  D. Configure voice translations in the SRST ISR.
  C. Configure COR in the SRST ISR.

• Question 178:

  Which statement about AAR functionality is true?

  A. AAR reroutes calls through the PSTN upon WAN failure.
  B. AAR reroutes calls through the PSTN when Cisco Unified Communications Manager CAC blocks a call.
  C. AAR reroutes calls through the WAN when the PSTN connection fails.
  D. AAR reroutes calls to another phone number when a Cisco IP Phone unregisters.
  B. AAR reroutes calls through the PSTN when Cisco Unified Communications Manager CAC blocks a call.

• Question 179:

  Which statement best describes globalized call routing in Cisco Unified Communications Manager?

  A. All incoming calling numbers on the phones are displayed as an E.164 with the + prefix.
  B. Call routing is based on numbers represented as an E.164 with the + prefix format.
  C. All called numbers sent out to the PSTN are in E.164 with the + prefix format.
  D. The CSS of all phones contain partitions assigned to route patterns that are in global format.
  E. All phone directory numbers are configured as an E.164 with the + prefix.
  B. Call routing is based on numbers represented as an E.164 with the + prefix format.

• Question 180:

  Which component of Cisco Unified Communications Manager is responsible for sending keepalive messages to the Service Advertisement Framework forwarder?

  A. Call Control Discovery requesting service
  B. Hosted DNs service
  C. Service Advertisement Framework client control
  D. Cisco Unified Communications Manager database
  E. Service Advertisement Framework-enabled trunk
  F. gatekeeper
  C. Service Advertisement Framework client control