Cisco 400-051 Online Practice Questions and Exam Preparation

Cisco 400-051 Online Questions & Answers

• Question 421:

  Which type of mailbox on Cisco Unity Express can play a user greeting and disconnect the call, but cannot take or send messages?

  A. PIN-less mailbox
  B. announcement-only mailbox
  C. general delivery mailbox
  D. call-handling mailbox
  E. personal mailbox
  B. announcement-only mailbox

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  Announcement-only mailbox is set for those users who only want the caller to listen the announcement and leave his message according to the announcement.

• Question 422:

  Which message is used by a Cisco IOS MGCP gateway to send periodic keepalives to its call agent?

  A. CRCX
  B. AUCX
  C. NTFY
  D. RQNT
  E. 200 OK
  C. NTFY

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  The gateway maintains this connection by sending empty MGCP Notify (NTFY) keepalive messages to Cisco CallManager at 15-second intervals. If the active Cisco CallManager fails to acknowledge receipt of the keepalive message within

  30 seconds, the gateway attempts to switch over to the next highest order Cisco CallManager server that is available.

  If none of the Cisco CallManager servers respond, the gateway switches into fallback mode and reverts to its default H.323 session application for basic call control support of IP telephony activity in the network.

• Question 423:

  When there are no calls, how many TCP and UDP connections exist on a Cisco IOS MGCP PRI gateway servicing a two-node UCM cluster configured with call processing redundancy?

  A. Two TCP connections and two UDP connections
  B. One TCP connection and no UDP connections
  C. One TCP connection and two UDP connections
  D. One TCP connection and one UDP connection
  E. Two TCP connections and one UDP connection
  C. One TCP connection and two UDP connections

• Question 424:

  An engineer is configuring QoS for a 100 Mb WAN link. An ISP SLA was signed to support 70% of the link. Which QoS command allows the engineer to use 70% of the link while maintaining a steady flow?

  A. traffic-shape rate 100000000 70000000 70000000
  B. police cir 70000000 confirm-action transmit exceed-action drop 243
  C. police 70000000 13125000 confirm-action transmit exceed-action drop
  D. traffic-shape rate 70000000 8750000 8750000
  D. traffic-shape rate 70000000 8750000 8750000

• Question 425:

  Which Call Control Discovery function allows the local Cisco Unified Communications Manager to listen for advertisements from remote call-control entities that use the SAF network?

  A. CCD advertising service
  B. CCD requesting service
  C. SAF forwarder
  D. SAF enabled trunks
  E. CCD registration service
  B. CCD requesting service

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  SAF and CCD will allow large distributed multi-cluster deployments to have the directory number (DN) ranges of each call routing element advertised dynamically over SAF. Cisco routers act as SAF Forwarders (SAFF), while the call routing elements (e.g. CUCM) act as clients that register with the routers to advertise their DN ranges and listen to the advertisements of other routers.

• Question 426:

  Which H.245 information is exchanged within H.225 messages in H.323 Fast Connect?

  A. Terminal Capability Set
  B. Open Logical Channel
  C. Master-Slave Determination
  D. Call Setup
  E. Call Progress
  B. Open Logical Channel

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  With the standard H.245 negotiation, the two endpoints need three round-trips before they agree on the parameters of the audio/video channels (1. master/slave voting, 2. terminal capability set exchange, and finally, 3. opening the logical channels). In certain situations and especially with high-latency network links, this can last too long and users will notice the delay.

• Question 427:

  When a SIP INVITE destined to sip:[email protected] arrives at a Cisco Meeting Server (CMS), which part of the Request-URI will CMS use to route the call?

  A. [email protected]
  B. sip:[email protected]
  C. userone@
  D. Outbound Call rules
  E. cciecollab.com
  E. cciecollab.com

• Question 428:

  Refer to the exhibit.

  

  Debug RAS output is logged on a H.323 gateway. Which RAS message is sent next by the H.323 gateway?

  A. ARQ
  B. BRQ
  C. IRQ
  D. LRQ
  E. RRQ
  E. RRQ

• Question 429:

  Which two user portion format conditions are true for directory URI on Cisco Unified Communications Manager 9.1 or later? (Choose two.)

  A. It supports the $ character.
  B. It support space between characters.
  C. It has a maximum length of 50 characters.
  D. It has a maximum length of 254 characters.
  E. It is always case-sensitive.
  F. It cannot be a directory number.
  A. It supports the $ character.
  B. It support space between characters.

  ---

  Cisco Unified Communications Manager supports the following formats in the user portion of a directory URI (the portion before the @ symbol):

  Accepted characters are a-z, A-Z, 0-9, !, $, %, and, *, _, +, ~, -, =, \, ?, \, `, ,, ., /.

  The user portion has a maximum length of 47 characters.

  The user portion accepts percent encoding from %2[0-9A-F] through %7[0-9A-F]. For some accepted characters, Unified CM automatically applies percent encoding. See below for more information on percent encoding.

  The user portion is case-sensitive or case-insensitive depending on the value of the URI Lookup Policy enterprise parameter. The default value is case-sensitive.

  References:

  http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/bat/9_1_1/CUCM_BK_C271A69D_00_cucm-bulk-administration-guide-91/CUCM_BK_C271A69D_00_cucm-bulk-administration-guide-91_chapter_01001110.html

• Question 430:

  When neither the active or standby Location Bandwidth Manager in the configured LBM group is available, what will the Cisco CallManager service on a subscriber Cisco Unified Communications Manager server do to make location CAC decisions?

  A. It will attempt to communicate with the first configured member in the Location Bandwidth Manager hub group.
  B. It will use the Call Treatment When No LBM Available service parameter with the default action to allow calls.
  C. It will use the Call Treatment When No LBM Available service parameter with the default action to reject calls.
  D. It will attempt to communicate with the local LBM service for location CAC decisions.
  E. It will allow all calls until communication is reestablished with any configured servers in the LBM group.
  D. It will attempt to communicate with the local LBM service for location CAC decisions.

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  By default the Cisco CallManager service communicates with the local LBM service; however, LBM groups can be used to manage this communication. LBM groups provide an active and standby LBM in order to create redundancy for Unified CM call control.