Cisco 400-051 Online Practice Questions and Exam Preparation

Cisco 400-051 Online Questions & Answers

• Question 501:

  An engineer is troubleshooting Cisco Jabber Federation where the server cannot discover the external Lync domains using SRV records. Which two steps must be taken to resolve this problem? (Choose two.)

  A. Set the Next Hop value as the IP address of the Microsoft Lync Server
  B. Set the protocol to TLS
  C. Configure the port number as 5060
  D. Configure the port number as 5065
  E. Set the protocol to TCP
  F. Configure the destination pattern as ".com.lyncdomainname.*"
  G. Set the Next Hop value as the IP address of the Lync Domain servers
  H. Configure the destination pattern as "lyncdomainname.com"
  B. Set the protocol to TLS
  F. Configure the destination pattern as ".com.lyncdomainname.*"

• Question 502:

  Refer to the exhibit.

  

  IP phone 1 has MAC address of 1111.1111.1111, and IP phone 2 has MAC address of 2222.2222.2222. The first two incoming calls were answered by IP phone 1, and the third incoming call was answered by IP phone 2. Which option describes what will happen to the fourth incoming call?

  A. Both phones ring, but only IP phone 2 can answer the call.
  B. Both phones ring and either phone can answer the call.
  C. Both phones ring, but only IP phone 1 can answer the call.
  D. Neither phone rings and the call is forwarded to 2100.
  E. Neither phone rings and the call is forwarded to 2200.
  D. Neither phone rings and the call is forwarded to 2100.

  ---

  IP Phone 1 and 2 both have busy-trigger-per-button configured to 3 and 2 respectively. So, the 4th incoming call will get forwarded to 2100 as busy-triggers are exceeding in IP Phones. References: http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/command/reference/cme_cr/cme_c1ht.html#wp1570384096

• Question 503:

  Which procedure uses H.225 messages to exchange H.245 Master-Salve Determination information?

  A. H.323 Fast Connect
  B. H.245 tunneling
  C. H.225 tunneling
  D. H.323 early media
  E. H.245 terminal capability set
  B. H.245 tunneling

  ---

  The H.245 protocol is a media control protocol that is a part of H.323 protocol suite. The H.245 protocol is used primarily to negotiate master-slave relationship between communicating endpoints. These endpoints exchange terminal capabilities and logical channel manipulations (open, close, modify).The H.245 messages can be encapsulated and carried between H.225 controlled endpoints within H.225 messages. This way of "piggy-backing" an H.245 message to

  H.225 message is referred to as H245 Tunneling. The H.245 Tunneling method is optional and negotiable between communicating H.323 endpoints. If both endpoints support this option, usually the H.245 Media Controlled messages are exchanged via the Tunneling method.

• Question 504:

  Refer to the exhibit.

  

  You received this debug output to troubleshoot a Cisco IOS MGCP gateway problem at a customer site. What is the purpose of this message?

  A. The MGCP gateway uses this message to respond to an RQNT message from Cisco Unified Communications Manager.
  B. The MGCP gateway uses this message to respond to an AUCX message from Cisco Unified Communications Manager.
  C. The MGCP gateway uses this message to respond to an AUEP message from Cisco Unified Communications Manager.
  D. The MGCP gateway uses this message to respond to a DLCX message from Cisco Unified Communications Manager.
  E. The MGCP gateway uses this message to respond to an NTFY message from Cisco Unified Communications Manager.
  C. The MGCP gateway uses this message to respond to an AUEP message from Cisco Unified Communications Manager.

  ---

  This message requests the status of an endpoint. Information that can be audited with this includes Requested Events,DigitMap,SignalRequests,RequestIdentifier,QuarantineHandling, Notified Entity, Connection Identifiers, Detect Events, Observed Events, Event States, Bearer Information, Restart Method, Restart Delay, ReasonCode, PackageList, Max MGCP Datagram, and Capabilities. The response will include information about each of the items for which auditing info was requested.

• Question 505:

  Which message-handling behavior describes how Cisco Unity Connection Single Inbox works for Outlook users who do not have ViewMail installed?

  A. Cisco Unity Connection voice messages are treated as emails without a WAV file attachment.
  B. Cisco Unity Connection voice messages are treated as voice messages.
  C. Cisco Unity Connection voice messages are treated as emails with a WAV file attachment.
  D. Cisco Unity Connection adds a Voice Outbox folder to the Outlook mailbox.
  E. Replies to Cisco Unity Connection voice messages are sent to Exchange as well as the Cisco Unity Connection mailbox for the recipient.
  C. Cisco Unity Connection voice messages are treated as emails with a WAV file attachment.

  ---

  Cisco unity here acts as an IMAP server for the outlook user who don't have view mail installed so user send their request as an IMAP client and unity will revert back with email and wav file attached to play.

• Question 506:

  

  Refer to the exhibit. Which Cisco Unified Border Element SIP Profile rules will modify the inbound SIP INVITE into the outbound SIP INVITE?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  E. Option E
  D. Option D

• Question 507:

  Refer to the exhibit.

  

  IP phone 1 has MAC address of 1111.1111.1111, and IP phone 2 has MAC address of 2222.2222.2222. The first two incoming calls rang both phones and were answered by IP phone 2. Which option describes what will happen to the third incoming call?

  A. Both phones ring, but only IP phone 1 can answer the call.
  B. Both phones ring and either phone can answer the call.
  C. Only IP phone 1 rings and can answer the call.
  D. Neither phone rings and the call is forwarded to 2100.
  E. Neither phone rings and the call is forwarded to 2200.
  C. Only IP phone 1 rings and can answer the call.

  ---

  As we can see busy-trigger-per-button set to 2 in voice register pool 1(IP Phone 1). So, IP Phone 1's channel is free for receiving incoming calls and right now IP Phone 2 is busy answering call.

• Question 508:

  How many signaling bits are there in each T1 time slot using channel associated signaling with Super Frame?

  A. 1
  B. 2
  C. 4
  D. 8
  E. 12
  B. 2

  ---

  Each T1 CAS has 24 channels that can transmit 8 bits per channel each. This gives us a total of 192 bits. The T1 has one additional bit for framing, bringing the total to 193 bits. Two types of line coding can be used on a T1 CAS. The first type of line coding is called Super Frame (SF). This is an older and less - efficient type of framing. Super Frame bundles 12 of these 193 - bit frames together for transport. It then uses the even ?numbered frames as signaling bits. The T1 CAS signaling then looks at every sixth frame for signaling information. This comes out to be 2 bits that are referred to as the A and B bits, which reside in frames 6 and 12.

• Question 509:

  Refer to the Exhibit.

  

  An agent initiated a video call but was establish as audio only. The support engineer collected and analyzed the Cisco Unified CM traces. Which two options caused this problem? (Choose two)

  A. A hardware MTP was assigned to the call.
  B. SIP Notify DTMF was requested and negotiated.
  C. MTP Required was checked on the SIP Trunks.
  D. Use Trusted Relay Point is set on one of the phones.
  E. MRGL assigned to phones with Trusted Relay Point.
  D. Use Trusted Relay Point is set on one of the phones.
  E. MRGL assigned to phones with Trusted Relay Point.

• Question 510:

  You are assisting a customer to troubleshoot a SIP early-offer problem with a SIP service provider. You have enabled Cisco CallManager trace and set the debug trace level to Detailed for SIP Call Processing trace on their standalone Cisco Unified Communications Manager 9.1 system. Using the RTMT tool, your customer has remote browsed to the Cisco UCM and asked you which trace file to download.

  What is the trace file name syntax in which detailed SIP messages are logged?

  A. SDL
  B. SDI
  C. CCM
  D. Call logs
  E. Traces
  A. SDL

  ---

  SDL files log SIP messages from CCM.