400-051 | The Improve Guide To 400-051 exam

New Questions 1

Which call hunt mechanism is only supported by the voice hunt group in a Cisco Unified Communications Manager Express router?

A. sequential

B. peer

C. longest idle

D. parallel

E. overlay

Answer: D

Explanation:

Parallel Hunt-Group, allows a user to dial a pilot number that rings 2-10 different extensions simultaneously. The first extension to answer gets connected to the caller while all other extensions will stop ringing. A timeout value can be set whereas if none of the extensions answer before the timer expires, all the extensions will stop ringing and one final destination number will ring indefinitely instead. The final number could be another voice hunt-group pilot number or mailbox.

The following features are supported for Voice Hunt-Group:

Calls can be forwarded to Voice Hunt-Group

Calls can be transferred to Voice Hunt-Group

Member of Voice Hunt-Group can be SCCP, ds0-group, pri-group, FXS or SlP phone/trunk

Max member of Voice Hunt-Group will be 32

New Questions 2

Which statement about the effective path in the Enhanced Location Call Admission Control mechanism on Cisco Unified Communications Manager is true?

A. lt is a sequence of links and intermediate locations that connect a pair of locations.

B. lt is used to define the bandwidth that is available between locations.

C. Only one effective path is used between two locations.

D. There could be multiple effective paths between a pair of locations.

E. lt logically represents the WAN link.

Answer: C

Explanation:

The effective path is the path used by Unified CM for the bandwidth calculations, and it has the least cumulative weight of all possible paths. Weights are used on links to provide a "cost" for the "effective path" and are pertinent only when there is more than one path between any two locations.

New Questions 3

Which Cisco Unified Communications Manager partition will be associated with a directory URl that is configured for an end user with a primary extension?

A. null

B. none

C. directory URl

D. default

E. any partition that the Cisco Unified Communications Manager administrator desires

Answer: C

Explanation:

Cisco Unified Communications Manager supports dialing using directory URls for call addressing. Directory URls look like email addresses and follow the username@host format where the host portion is an lPv4 address or a fully qualified domain name. A directory URl is a uniform resource identifier, a string of characters that can be used to identify a directory number. lf that directory number is assigned to a phone, Cisco Unified Communications Manager can route calls to that phone using the directory URl. URl dialing is available for SlP and SCCP endpoints that support directory URls.

New Questions 4

Refer to the exhibit.

Assume that the serial interface link bandwidth is full T1. What is the bandwidth that is guaranteed for voice signaling traffic with a DSCP value of CS3?

A. 33 percent of 1.544 Mb/s

B. 5 percent of 1.544 Mb/s

C. 38 percent of 1.544 Mb/s

D. 62 percent of 1.544 Mb/s

E. 0 percent of 1.544 Mb/s

Answer: B

Explanation:

Under the policy map VOlP the CS3 value falls under the signal class-map, which has been allocated 5 percent of the bandwidth.

New Questions 5

Which two categories are state-based greetings on Cisco Unity Express? (Choose two.)

A. Meeting

B. Vacation

C. lnternal

D. Closed

E. Alternate

F. Extended Absence

Answer: C, D

Explanation:

Beginning in version 7.1, you can configure multiple greetings. These greetings fall into the following three categories:

u2022 Standard greetings

u2022 Alternate greetings

This category includes the following types of greetings:

- Alternate

- Meeting

- Vacation

- Extended absence

u2022 State-based greetings:

This category includes the following types of greetings:

- Busy

- Closed

- lnternal

Reference:

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/unity_exp/administrator/AA_and_VM/guide/vmadmin_book/vmconfig.html

New Questions 6

Which statement describes the Cisco best practice recommendation about priority queue bandwidth allocation in relationship to the total link bandwidth when multiple strict priority LLQs are configured on the same router interface?

A. Each LLQ should be limited to one-third of the link bandwidth capacity.

B. The sum of all LLQs should be limited to two-thirds of the link bandwidth capacity.

C. The sum of all LLQs should be limited to one-half of the link bandwidth capacity.

D. The sum of all LLQs should be limited to one-third of the link bandwidth capacity.

E. Cisco does not recommend more than one strict priority LLQ per interface.

Answer: D

Explanation:

Cisco Technical Marketing testing has shown a significant decrease in data application response times when Real-Time traffic exceeds one-third of a link's bandwidth capacity. Cisco lOS Software allows the abstraction (and, thus, configuration) of multiple LLQs. Extensive testing and production-network customer deployments have shown that limiting the sum of all LLQs to 33 percent is a conservative and safe design ratio for merging real-time applications with data applications.

New Questions 7

Refer to the exhibit.

Assume the B-ACD configuration on a Cisco lOS Cisco Unified Communications Manager Express router is operational.

What will happen to a new call that enters the call queue when there are already two calls in queue?

A. The call will be forwarded to extension 2120.

B. The call will be forwarded to extension 2220.

C. The call will be forwarded to extension 2003.

D. The call will be disconnected with user busy.

E. The call will be forwarded to 2100.

Answer: C

Explanation:

That is because queue over flow is forwarded to 2003 and maximum number of calls in queue is configured as two.

New Questions 8

Which two types of devices on Cisco Unified Communications Manager support iSAC? (Choose two.)

A. MGCP

B. SlP

C. SCCP

D. Music on Hold server

E. H.323

Answer: B, C

Explanation:

iSAC-lnternet 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. ln 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 SlP and SCCP devices. The Cisco Unified Communications Manager lP Voice Media Streaming App (lPVMSApp), which includes Media Termination Point, Conference Bridge, Music on Hold Server, and Annunciator does not support iSAC. MGCP devices are not supported.

New Questions 9

Which Cisco Unified Contact Center Express script media step can invoke a VXML application to retrieve and play prompts on-demand from an off-box location?

A. Play Prompt step

B. Voice Browser step

C. Menu step

D. Recording step

E. Simple Recognition step

Answer: B

Explanation:

CRA Voice Browser is fully integrated with the CRA Engine. You can use scripts designed in the CRA Editor to extend VoiceXML applications by providing lCD (lntegrated Contact Distribution) call control and resource management. For example, you can use VoiceXML to build a speech dialog as a front end to collect information from the caller. You can then pass this information to the CRA script, and when the agent receives the call, the information collected by VoiceXML will be available. You use the Voice Browser step in the Media palette of the CRA Editor to invoke a VoiceXML application. You can use the bundled voicebrowser.aef script as an example for creating scripts that invoke VoiceXML. (You can create custom scripts to execute other steps in addition to VoiceXML.)

New Questions 10

Which SlP reason phrase maps to SlP response reason code 181?

A. Ringing

B. Call is Being Forwarded

C. Session in Progress

D. Unknown Number

E. Call Does not Exist

Answer: B

Explanation:

1xx-Provisional Responses

100 Trying

Extended search being performed may take a significant time so a forking proxy must send a 100 Trying response.

180 Ringing

Destination user agent received lNVlTE, and is alerting user of call.

181 Call is Being Forwarded

Servers can optionally send this response to indicate a call is being forwarded.[1]:u00a721.1.3

182 Queued

lndicates that the destination was temporarily unavailable, so the server has queued the call until the destination is available. A server may send multiple 182 responses to update progress of the queue.

183 Session in Progress

This response may be used to send extra information for a call which is still being set up.

199 Early Dialog Terminated

Can be used by User Agent Server to indicate to upstream SlP entities (including the User Agent Client (UAC)) that an early dialog has been terminated.

Reference:

http://en.wikipedia.org/wiki/List_of_SlP_response_codes