Cisco 642-447 Online Practice Questions and Exam Preparation

Cisco 642-447 Online Questions & Answers

• Question 161:

  Which option is used to associate devices with a Cisco Unified Communications Manager group?

  A. device pools
  B. locations
  C. regions
  D. licenses
  A. device pools

• Question 162:

  You have the Cisco IP Voice Media Streaming App enabled on all three of your servers in your cluster. You do not want any software-based transcoders to be used under any circumstances, but you need the annunciator service.

  Which action should you perform?

  A. Do not add the software-based transcoders to any Media Resource Group.
  B. Create a Media Resource Group called Not_Used, assign software-based transcoders to this group, and do not assign this group to any Media Resource Group List.
  C. Disable the Cisco IP Voice Media Streaming App on all three servers.
  D. Disable transcoding in the Cisco CallManager service parameters.
  B. Create a Media Resource Group called Not_Used, assign software-based transcoders to this group, and do not assign this group to any Media Resource Group List.

• Question 163:

  If you want to change the default SCCP and SIP IP phone firmware loads a phone receives, in which location would you make this change?

  A. Device Pool
  B. Device Settings > Device Defaults
  C. Device Settings > Firmware Load Information
  D. Device Settings > Default Device Profile Configuration
  E. Device Settings > Device Profile
  F. Device Settings > Softkey Template
  B. Device Settings > Device Defaults

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  Link :

  http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/8_5_1/ccmsys/a08sip.html :

  firmware load only possible from Device default menu Reference : Cisco Unified Communications Manager System Guide Release 8.5(1), page-154.

• Question 164:

  Which three of these are characteristics of a Cisco Unified Communications Manager software- based Media Termination Point? (Choose three.)

  A. The codec and packetization of both call legs must be identical.
  B. This Media Termination Point type does not require any DSP resources on the Cisco router.
  C. DSP resources are required.
  D. It can provide G.711 mu-law to G.711 a-law conversion and vice versa.
  E. It can provide packetization conversion for a given codec (for example, if one call leg is using a 20-ms sample size, but the other call leg is using a 30-ms sample size).
  F. This Media Termination Point type is typically used for RSVP agent configurations or Cisco Unified Border Element media flow-through configurations.
  B. This Media Termination Point type does not require any DSP resources on the Cisco router.
  D. It can provide G.711 mu-law to G.711 a-law conversion and vice versa.
  E. It can provide packetization conversion for a given codec (for example, if one call leg is using a 20-ms sample size, but the other call leg is using a 30-ms sample size).

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  Three MTP types can be configured:

  - Software MTP: provided by the Cisco IP Voice Media Streaming App service on Cisco Unified Communications Manager:

  -- This MTP type can convert G.711 mu-law to G.711 a-law and vice versa. -- This MTP type can packetize conversion for a given codec; for example, when one call leg uses 20-ms sample size and the other call leg uses 30-ms sample size.

  -Software MTP: configured on Cisco IOS routers:

  -- This MTP type does not require any DSP resources onthe Cisco router. Enable Cisco IOS Software MTPs by using the maximum session software command. As many as 500 software-based sessions can be configured. The codec

  and packetization of both call legs must be identical. -- This MTP type typically is used for Resource Reservation Protocol (RSVP) agent configurations or Cisco Unified Border Element media flow-through configurations. -- Cisco Unified

  Communications Manager does not differentiate between software-and hardware-based Cisco IOS MTP configurations. Every Cisco IOS Software MTP is considered as a hardware MTP in Cisco Unified Communications Manager.

• Question 165:

  You have configured SRST at a remote site on an MGCP gateway. During testing, you find that IP phones are not registering with the SRST router when the IP WAN fails.

  \ *

  Which three potential problems need to be investigated? (Choose three.)

  A. The ccm-managerfallback-mgcp command is missing in the SRST router.
  B. NO SRST reference address is included in the device pool.
  C. The max-dn command is missing in the SRST router.
  D. The max-ephones command is missing in the SRST router.
  B. NO SRST reference address is included in the device pool.
  C. The max-dn command is missing in the SRST router.
  D. The max-ephones command is missing in the SRST router.

• Question 166:

  Which three of these are reasons to deploy media resource access control in a Cisco Unified Communications Manager cluster? (Choose three.)

  A. to enable Cisco Unified Communications Manager to share and access the resources that are available across multiple clusters
  B. to enable hardware and software media resources to coexist within a Cisco Unified Communications Manager and to be used with different priorities.
  C. to enable Cisco Unified Communications Manager to perform load distribution within a group of dissimilar media resources
  D. to allow media resource access control based on the type of the resource.
  E. to enable Cisco Unified Communications Manager to perform load distribution within a group of similar media resources.
  B. to enable hardware and software media resources to coexist within a Cisco Unified Communications Manager and to be used with different priorities.
  D. to allow media resource access control based on the type of the resource.
  E. to enable Cisco Unified Communications Manager to perform load distribution within a group of similar media resources.

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  Link :

  http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/8_5_1/ccmsys/a05media.html Reference :

  Cisco Unified Communications Manager System Guide Release 8.5(1), Page- 279. : Media resources provide services such as annunciator, transcoding, conferencing, music on hold, and media termination so A and C is not correct.

• Question 167:

  What is the maximum number of audio source files you can define in a Cisco Unified Communications Manager cluster?

  A. 50
  B. 75
  C. 100
  D. 250
  A. 50

• Question 168:

  Drag the appropriate IOS command from the left and drop them in the spaces on the right. Configure an H.323 gateway to provide call processing redundancy where the Subscriber (10.1.5.3) is the preferred server and if that isn't available the Publisher (10.1.5.2) should be used after three (3) seconds. Not all options are used.

  Select and Place:

  

  

• Question 169:

  Which two services need to be activated on a Cisco Unified Communications Manager for it to function as the publisher in a cluster? (Choose two.)

  A. Cisco DirSync
  B. Cisco Extension Mobility
  C. Cisco Messaging Interface
  D. Cisco TFTP
  E. Cisco CallManager
  F. Cisco DHCP Monitor Service
  A. Cisco DirSync
  F. Cisco DHCP Monitor Service

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  Link :

  http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/service/8_6_1/admin/sasrvdes.html Reference :

  Cisco Unified Serviceability Administration Guide Release 8.6(1), page-91. : The Cisco Extension Mobility feature allows users to temporarily access their Cisco Unified IP Phone configuration such as line appearances, services, and speed

  dials from other Cisco Unified IP Phones.

• Question 170:

  Which two qualities of PKI key exchange overcome asymmetric cryptography scalability issues? (Choose two.)

  A. the trusted introducer uses the signed certificates of the endpoints that need to communicate
  B. the introducer digitally signs the public key of the user with the public key of the introducer to generate a signed certificate
  C. only the public key of the introducer has to be initially known and verified by all other entities
  D. PKI uses only a single trusted introducer
  C. only the public key of the introducer has to be initially known and verified by all other entities
  D. PKI uses only a single trusted introducer

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  Chapter 14: Understanding Cryptographic Fundamentals and PKI pg. 374 A PKI does not eliminate the need for authenticity when you exchange public keys in an asymmetric encryption environment, but it solves the scalability issues

  associated with that process.

  A PKI uses the concept of a single, trusted introducer. Instead of securely exchanging all public keys among all devices, only the public key of the trusted introducer has to be securely distributed to all devices. This exchange is usually done

  by downloading the public key and then verifying it out of band.