Cisco 400-051 Online Practice Questions and Exam Preparation

Cisco 400-051 Online Questions & Answers

• Question 11:

  Refer to the exhibit. A Cisco VoIP administrator is configuring CUE VoiceView Express for end users and they are not able to manage their voice message from their Cisco IP Phones. Which two configuration commands are required? (Choose two.)

  

  A. url services http://10.10.1.1/voiceview/common/login.do
  B. url messages http://10.10.1.1/messages/common/login.do
  C. url services http://10/10/1/1/CMEUser/123456/urlsupport.html
  D. url information http://10.10.1.1/information/info.html
  E. url authentication http://10.10.1.1/CCMCIP/authenticate.asp
  A. url services http://10.10.1.1/voiceview/common/login.do
  E. url authentication http://10.10.1.1/CCMCIP/authenticate.asp

• Question 12:

  Which entity in OAuth operation validates the access token?

  A. Authorization Server
  B. Resource Owner
  C. Resource Server
  D. Client
  A. Authorization Server

• Question 13:

  Refer to the exhibit.

  

  In this high-availability Cisco IM and Presence deployment with three subclusters, the first user is assigned to server 1A; the second user is assigned to server 2A; and the third user is assigned to server 3A. Assume that Cisco IM and Presence is set to active-active mode. To which server will the fourth user be automatically assigned?

  A. 1A
  B. 3B
  C. 1B
  D. 2A
  E. 3A
  C. 1B

  ---

  You can achieve a balanced mode High Availability deployment by evenly balancing users across all nodes in the subcluster, but only using up to 35% of the CPU of each IM and Presence node. The balanced mode High Availability deployment option in a redundant mode supports up to fifteen thousand users per cluster. For example, if you have six IM and Presence nodes in your deployment, and fifteen thousand users, you assign 2.5 thousand users to each IM and Presence node. When you use the balanced mode High Availability deployment option in a redundant mode, as compared to a non-redundant mode, only half the number of users are assigned to each node. However, if one node fails, the other node will handle the full load of the additional 50% of users in the subcluster, even at peak traffic. In order to support this failover protection, you must turn on High Availability in each of the subclusters in your deployment.

• Question 14:

  Refer to the exhibit.

  

  Which option describes how this Cisco IOS SIP gateway, with an analog phone attached to its FXS port, handles an incoming informational SIP 180 response message without SDP?

  A. It will enable early media cut-through.
  B. It will generate local ring back.
  C. It will do nothing because the message is informational.
  D. It will terminate the call because this is an unsupported message format.
  E. It will take the FXS port offhook.
  B. It will generate local ring back.

  ---

  The Session Initiation Protocol (SIP) feature allows you to specify whether 180 messages with Session Description Protocol (SDP) are handled in the same way as 183 responses with SDP. The 180 Ringing message is a provisional or informational response used to indicate that the INVITE message has been received by the user agent and that alerting is taking place. The 183 Session Progress response indicates that information about the call state is present in the message body media information. Both 180 and 183 messages may contain SDP, which allows an early media session to be established prior to the call being answered. Prior to this feature, Cisco gateways handled a 180 Ringing response with SDP in the same manner as a 183 Session Progress response; that is, the SDP was assumed to be an indication that the far end would send early media. Cisco gateways handled a 180 response without SDP by providing local ringback, rather than early media cut-through. This feature provides the capability to ignore the presence or absence of SDP in 180 messages, and as a result, treat all 180 messages in a uniform manner. The SIP--Enhanced 180 Provisional Response Handling feature allows you to specify which call treatment, early media or local ringback, is provided for 180 responses with SDP.

  References: http://www.cisco.com/c/en/us/td/docs/ios/voice/cube/configuration/guide/vb_book/vb_book/vb_1506.html

• Question 15:

  Company ABC is deploying Mobile and Remote Access (MRA) to allow employees to login Jabber clients from anywhere on the internet. Which three DNS records have to be provisioned for a successful MRA login from outside of the corporate network? (Choose three.)

  A. DNS SRV record for _cisco-uds._tcp.abc.com in the corporate internal DNS server
  B. DNS SRV record for _collab-edge._tls.abc.com in the external DNS server
  C. DNS A record for the Expressway-C FQDN in the external DNS server
  D. DNS A record for _collab-edge._tls.abc.com in the external DNS server
  E. DNS A record for _collab-edge._tls.abc.com in the corporate internal DNS server
  F. DNS A record for the Expressway-E FQDN in the external DNS server
  G. DNS SRV record for_cisco-uds._tcp.abc.com in the external DNS server
  A. DNS SRV record for _cisco-uds._tcp.abc.com in the corporate internal DNS server
  E. DNS A record for _collab-edge._tls.abc.com in the corporate internal DNS server
  F. DNS A record for the Expressway-E FQDN in the external DNS server

• Question 16:

  VMs are best suited to running what kind of workloads?

  A. Monolithic applications
  B. Jobs that scale, but don't interact much
  C. Cloud Native applications
  D. Microservices
  E. Cloud-based applications
  D. Microservices

• Question 17:

  A collaboration engineer has just implemented SAF as a hub-and-spoke network. The hub uses its loopback interface for SAF advertisements. Updates are coming into the hub router, but are not being advertised out. Which option describes the issue?

  A. Multicast is not enabled across the WAN.
  B. SAF is set up on a VRF.
  C. SAF username/password are incorrect.
  D. The autonomous system is mismatched.
  E. Split horizon is enabled.
  E. Split horizon is enabled.

• Question 18:

  Company ABC is deploying Mobile and Remote Access (MRA) to allow employees to login Jabber clients from anywhere on the internet. Which two DNS queries must a Jabber client resolve from outside of the corporate network? (Choose two.)

  A. DNS A record for_cisco-uds._tls.abc.com
  B. DNS SRV record for_collab-edge._tls.abc.com
  C. DNS A record for _collab-edge_tls.abc.com
  D. DNS SRV record for _cuplogin._tcp.abc.com
  E. DNS A record for the Expressway-E FQDN
  F. DNS SRV record for_cisco-uds._tcp.abc.com
  G. DNS SRV record for_cuplogin._tls.abc.com
  B. DNS SRV record for_collab-edge._tls.abc.com
  F. DNS SRV record for_cisco-uds._tcp.abc.com

  ---

  Reference: https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X8-11/Mobile-Remote-Access-via-Expressway-Deployment-Guide-X8-11-1.pdf

• Question 19:

  Refer to the exhibit.

  

  A PSTN caller initiates an inbound call. Which two dial peers can be selected as inbound dial peers? (Choose two.)

  A. dial-peer voice 100 potsanswer-address [2-9]..[2-9]...$voice-port 0/0/0:23
  B. dial-peer voice 200 potsdestination-pattern [2-9]..[2-9]..[2-9]...$voice-port 0/1/0:15
  C. dial-peer voice 300 potsincoming called-number 704[2-9]...$voice-port 0/1/0:15
  D. dial-peer voice 400 potsanswer-address 672[2-9]...$voice-port 0/0/0:15
  E. dial-peer voice 500 potsincoming called-number 6..[2345689]...$voice-port 0/1/0:15
  B. dial-peer voice 200 potsdestination-pattern [2-9]..[2-9]..[2-9]...$voice-port 0/1/0:15
  E. dial-peer voice 500 potsincoming called-number 6..[2345689]...$voice-port 0/1/0:15

• Question 20:

  Which three softkeys can be offered on a Cisco IP Phone 7965, running SCCP firmware, when it is in Ring In state? (Choose three)

  A. iDivert
  B. DND
  C. Answer
  D. NewCall
  E. EndCall
  F. CallBack
  A. iDivert
  B. DND
  C. Answer