Cisco 400-051 Online Practice Questions and Exam Preparation

Cisco 400-051 Online Questions & Answers

• Question 191:

  Refer to the exhibit.

  

  The exhibit shows the Cisco IOS CLI output of debug ipdhcp packet, which was captured on a router that is located at a branch office where a single IP phone is located. There is a standalone Cisco Unified Communications Manager server at the central site, which also provides DHCP services to the IP phone at the branch office. You are troubleshooting a problem where the IP phone could not register to Cisco Unified Communications Manager. You have confirmed that the IP phone received an IP address in the correct subnet and with a correct subnet mask from the DHCP server. Assuming the IP phone is correctly defined on Unified CM, which two statements about the network components are true? (Choose two.)

  A. The MAC address of the IP phone is 01ec44761e3e.
  B. The IP address of the DHCP server is 10.101.15.1.
  C. The MAC address of the VLAN 101 interface is ec44761e3e7d.
  D. The IP address of the VLAN 101 interface is 10.101.15.1.
  E. There is IP connectivity between the VLAN 101 interface of the branch router and the ip-helper address that is configured on this interface.
  F. There is IP connectivity between the IP phone and the ip-helper address on the VLAN 101 interface.
  D. The IP address of the VLAN 101 interface is 10.101.15.1.
  E. There is IP connectivity between the VLAN 101 interface of the branch router and the ip-helper address that is configured on this interface.

  ---

  As we can see from the logs given first line relate that dhcp request is being relayed. So it clarifies there must be ip helper address commend given by the admin on interface vlan 101. Now we can see from the second line that giaddress is set as source address of vlan 101 by the dhcp as 10.101.15.1 to unicast the dhcp request

• Question 192:

  Which message is used by a Cisco Unified Communications Manager respond to periodic keepalives from a Cisco IOS MGCP gateway?

  A. AUEP
  B. RQNT
  C. NTFY
  D. 200
  E. AUCX
  D. 200

  ---

  (2xx) Successful completion: The requested transaction was executed normally.

• Question 193:

  Which three parameters are requested in an Audit Endpoint message from a Cisco Unified CM to an endpoint on a MGCP gateway? (Choose three.)

  A. Bearer Information
  B. Call ID
  C. Capabilities
  D. Connection ID
  E. Connection Mode
  F. Connection Parameters
  G. Request Identifier
  H. Observed Events
  C. Capabilities
  D. Connection ID
  G. Request Identifier

• Question 194:

  Refer to the exhibit.

  

  A phone VPN failed to establish a VPN with the Cisco ASA. The support engineer downloaded the console logs and analyzed them. When two steps resolve this issue? (Choose two)

  A. Configure user and password authentication instead of certificate only.
  B. Uncheck the enable Host ID check checkbox under the VPN profile in Cisco Unified CM.
  C. Reset the Cisco Unified CM TFTP service to allow caching of the new certificate.
  D. Delete the current certificate so the phone can download a new one.E .Register the phone internally to download the new configuration.
  B. Uncheck the enable Host ID check checkbox under the VPN profile in Cisco Unified CM.

• Question 195:

  Refer to the exhibit.

  

  On which two Cisco Unified CM Administration pages can a system administrator define MTU for an SSL VPN tunnel connecting between a Cisco IP phone and a Cisco IOS VPN gateway? (Choose two.)

  A. VPN Profile
  B. VPN Group
  C. VPN Gateway
  D. VPN Feature Configuration
  E. System, followed by Enterprise Parameters
  F. System, followed by Enterprise Phone Configuration
  A. VPN Profile
  D. VPN Feature Configuration

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  References: http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/security/8_5_1/secugd/sec-851-cm/secvpfet.html

• Question 196:

  Which four presence statuses are supported in Cisco IM and Presence federation with Microsoft Lync server? (Choose four.)

  A. offline
  B. on the phone
  C. busy
  D. idle
  E. invisible
  F. in a meeting
  G. available
  H. away
  A. offline
  B. on the phone
  G. available
  H. away

• Question 197:

  

  Refer to the exhibit. Which dial-peer will be selected as the incoming dial-peer?

  A. dial-peer voice 86 voip description Incoming dial-peer 1 session protocol sipv2 incoming called-number 200.
  B. dial-peer voice 89 voip session protocol sipv2 incoming called-number.T
  C. dial-peer voice 90 voip session protocol sipv2 answer-address 20..
  D. voice class e 164-pattern-map 1 e164 200. e164 2... e164 ^20..$ dial-peer voice 88 voip session protocol sipv2 incoming called e164-pattern map1
  E. dial-peer voice 87 voip description Incoming dial-peer 1 session protocol sipv2 incoming called-number 20..
  A. dial-peer voice 86 voip description Incoming dial-peer 1 session protocol sipv2 incoming called-number 200.

• Question 198:

  Refer to the exhibit.

  

  An engineer mapped the enhance location call admission control configuration to match the physical links and bandwidth allowances. Assuming no other calls are consuming any bandwidth, how many G722 calls are allowed between site A and site G?

  A. 5
  B. 7
  C. 12
  D. 25
  E. 37
  B. 7

• Question 199:

  Which statement about the iSAC on Cisco Unified Border Element is true?

  A. It is a narrow-band codec.
  B. It has a fixed frame of 30 milliseconds.
  C. It has an adaptive frame of up to 60 milliseconds.
  D. It is designed to deliver wideband sound quality in high-bit-rate applications only.
  E. It is not yet supported on the Cisco Unified Border Element (CUBE)
  F. It is not yet supported on Cisco Unified Border Element.
  C. It has an adaptive frame of up to 60 milliseconds.

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  iSAC-Internet Speech Audio Codec (iSAC) is an adaptive wideband audio codec, specially designed to deliver wideband sound quality with low delay in both low and medium-bit rate applications. Using an adaptive bit rate of between 10 and 32 kb/s, iSAC provides audio quality approaching that of G.722 while using less than half the bandwidth. In deployments with significant packet loss, delay, or jitter, such as over a WAN, iSAC audio quality is superior to that of G.722 due to its robustness. iSAC is supported for SIP and SCCP devices. The Cisco Unified Communications Manager IP Voice Media Streaming App (IPVMSApp), which includes Media Termination Point, Conference Bridge, Music on Hold Server, and Annunciator does not support iSAC. MGCP devices are not supported.

• Question 200:

  Refer to the exhibit.

  

  10.1.1.1 and 10.1.1.2 are node IP addresses of a Cisco Unified CM cluster. Which two statements describe the correct Gatekeeper Information parameters on Cisco Unified CM H.225 Trunk (Gatekeeper Controlled) configuration page that could produce the output shown in the exhibit? (Choose two.)

  A. Default Technology Prefix is 1*.
  B. Technology Prefix is 1.
  C. H.323 IDs are HQGK_1 and HQGK_2.
  D. H.323 ID is HQGK.
  E. Technology Prefix is 1*.
  F. Zone name is HQGK.
  B. Technology Prefix is 1.
  E. Technology Prefix is 1*.