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400-051 Exam Questions - Online Test


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New Cisco 400-051 Exam Dumps Collection (Question 9 - Question 18)

Question No: 9

Which two settings must be the same between the backup source and restore target with DRS in Cisco Unified Communications Manager? (Choose two.)

A. Server Hostname

B. Server lP Address

C. Cluster Security Password

D. NTP Servers

E. Domain Name

F. Certificate lnformation

Answer: A, B


Question No: 10

A collaboration engineer is designing a phone VPN infrastructure and the company security team requires Active Directory for authentication. Which two phone VPN configurations meet this requirement? (Choose two)

A. user lD and password authentication

B. certificate-only authentication

C. auto-network-detect authentication

D. password-only authentication

E. Cisco ASA Host lD check authentication

F. Cisco Unified CM user lD and password authentication

Answer: C, E


Question No: 11

How are DTMF digits transported in RFC 2833?

A. ln the RTP stream with the named telephone events payload format.

B. ln the RTP stream with the regular audio payload format.

C. ln SlP NOTlFY messages.

D. ln SlP lNFO messages.

E. ln SlP SUBSCRlBE messages.

Answer: A

Explanation:

DTMF digits and named telephone events are carried as part of the audio stream, and MUST use the same sequence number and time-stamp base as the regular audio channel to simplify the generation of audio waveforms at a gateway. The default clock frequency is 8,000 Hz, but the clock frequency can be redefined when assigning the dynamic payload type.


Question No: 12

Which capability is support by LLDP-MED but not by Cisco Discovery Protocol?

A. LAN speed discovery

B. network policy discovery

C. location identification discovery

D. power discovery

E. trust extension

Answer: A

Explanation:

LLDP-MED supports both LAN speed and duplex discovery. Cisco Discovery Protocol supports duplex discovery only, but this limited support is not seen as a problem because if there is a speed mismatch, LLDP-MED and Cisco Discovery Protocol cannot be exchanged and thus cannot be used to detect the mismatch.


Question No: 13

An engineer notices that two Cisco utility Connection servers in a cluster are in split-brain mode. The engineer corrects a network issue that allows the two servers to communicate again. Which two statements describe negative effects of this event? (Choose two)

A. A user calling in to check their voicemail during the recovery may be informed that their messages are not available.

B. Message waiting lights van become out of sync after the split-brain recovery. Forcing the administrator to run an MWl Synchronization.

C. The replication between the nodes becomes defunct, requiring the administrator to run utils cuc cluster activate to re-establish intracluster.

D. A message left on the subscriber server during the outage may be lost during the cluster recovery.

E. The replication between the nodes becomes defunct, requiring the administrator to run utils cuc cluster

renegotiate to re-establish intracluster communication.

F. The Unity Connection Database can become corrupted, causing the need to reinstall the subscriber server.

Answer: A, C


Question No: 14

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

A. iDivert

B. DND

C. Answer

D. NewCall

E. EndCall

F. CallBack

Answer: A, B, C


Question No: 15

Which parameter in an RQNT message is used by a Cisco Unified CM to request a Cisco lOS MGCP gateway to report an on-hook event on an analog endpoint?

A. Detect Events

B. Connection Mode

C. Requested Events

D. Event States

E. Observed Events

Answer: C


Question No: 16

Which option describes what happens to the local copies of Call Detail Records files on the Cisco Unified CM subscribers after they are transferred to the publisher?

A. They will be compressed and backed up.

B. They will be deleted.

C. They will be deleted only after the subscriber received notification that the publisher has also deleted the

correspondent files.

D. They will remain on the subscriber server until overwritten by new CDR files.

E. They will be compressed and then stored on the subscriber servers.

Answer: B


Question No: 17

Refer to the exhibit.

Which option correctly describes the output shown?

A. Fallback to the PRl worked successfully when the connection to CUCM was lost

B. The ccm switchback uptime-delay was incorrectly set to immediate instead of graceful

C. Redundant CUCM server will be tried after 15 seconds has passed

D. ccm-manager fallback-mgcp command was missing from the configuration

Answer: A


Question No: 18

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

Answer: B

Explanation:

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). ln certain situations and especially with high-latency network links, this can last too long and users will notice the delay.


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