[Free] 2017(Apr) Ensurepass Passguide Cisco 400-051 Latest Dumps 141-150

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CCIE Collaboration Written Exam

QUESTION 141

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?

 

clip_image001

 

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.

 

Correct Answer: D

Explanation:

IP Phone 1 & 2 both have busy-trigger-per-button configured to 3 & 2 respectively. So, the 4th incoming call will get forwarded to 2100 as busy-triggers are exceeding in IP Phones.

 

Reference:

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/command/reference/cme_cr/cme_c1ht.html#wp1570384096

 

 

QUESTION 142

Which method allows administrators to determine the best match impedance on analog voice ports in Cisco IOS router without having to shut and no shut the ports?

 

A.

THL tone sweep

B.

original tone sweep

C.

ECAN test

D.

inject-tone local sweep

E.

remote loop

 

Correct Answer: A

Explanation:

THL tone sweep allows all available impedances for a single test call to a quiet termination point out to the PSTN. You do not need to manually disable ECAN on the voice port under test. The test feature switches impedances automatically for the tester. The test feature calculates the arithmetic mean ERL and reports the mean for each channel profile at each impedance setting. Then, at the end of the test, the feature specifies the best match impedance setting. This test requires minimal supervision.

 

Reference:

http://www.cisco.com/c/en/us/support/docs/voice/ip-telephony-voice-over-ip-voip/64282-impedance-choice.html

 

 

QUESTION 143

In which call state does the Mobility soft key act as a toggle key to enable or disable Single Number Reach for Cisco Unified Communications Manager Express SCCP IP phones?

 

A.

idle

B.

seized

C.

alerting

D.

ringing

E.

connected

 

Correct Answer: A

Explanation:

Pressing the Mobility soft key during the idle call state enables the SNR feature. This key is a toggle; pressing it a second time disables SNR.

 

Reference:

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/admin/configuration/guide/cmeadm/cmesnr.html

 

 

QUESTION 144

Which two statements are requirements regarding hunt group options for B-ACD implementation on Cisco Unified Communications Manager Express routers? (Choose two.)

 

A.

The ephone hunt group is mandatory.

B.

Either the ephone hunt group or the voice hunt group is acceptable.

C.

Hunt group members must be SCCP IP phones.

D.

Hunt group members can include both SCCP or SIP IP phones.

E.

Hunt group members must be SIP IP phones.

F.

The member hunting mechanism must be set to sequential.

 

Correct Answer: AC

Explanation:

The ephone hunt group is mandatory, and while ephone hunt groups only support Cisco Unified SCCP IP phones, a voice hunt group supports either a Cisco Unified SCCP IP phone or a Cisco Unified SIP IP phone.

 

Reference:

http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/command/reference/cme_v1ht.html

 

 

QUESTION 145

In Channel Associated Signaling on a T1 circuit using Extended Super Frame, how many signaling bits does each T1 timeslot have?

 

A.

1

B.

2

C.

4

D.

12

E.

24

 

Correct Answer: C

Explanation:

Each T1 channel carries a sequence of frames. These frames consist of 192 bits and an additional bit designated as the framing bit, for a total of 193 bits per frame. Super Frame (SF) groups twelve of these 193 bit frames together and designates the framing bits of the even numbered frames as signaling bits. CAS looks specifically at every sixth frame for the timeslot’s or channel’s associated signaling information. These bits are commonly referred to as A- and B-bits. Extended super frame (ESF), due to grouping the frames in sets of twenty-four, has four signaling bits per channel or timeslot. These occur in frames 6, 12, 18, and 24 and are called the A-, B-, C-, and D-bits respectively.

 

Reference:

http://www.cisco.com/c/en/us/support/docs/voice/digital-cas/22444-t1-cas-ios.html

 

 

 

QUESTION 146

Refer to the exhibi
t. Assume the B-ACD configuration on a Cisco Unified Communications Manager Express router is operational. Which option describes what will happen to an incoming call that entered the call queue but all members of the hunt group are in Do Not Disturb status?

 

clip_image002

 

A.

The call is forwarded to extension 2120.

B.

The call is forwarded to extension 2220.

C.

The call is forwarded to extension 2003.

D.

The call is disconnected with user busy.

E.

The call is forwarded to extension 2100.

 

Correct Answer: B

Explanation:

Because all members of hunt group are unavailable or activate DnD and incoming queued call will forward to voicemail using the param voice-mail 2220 command.

 

Reference:

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/bacd/configuration/guide/cme40tcl/40bacd.html#wpmkr1105714

 

 

QUESTION 147

Which two statements about the restrictions for support of H.239 are true? (Choose two.)

 

A.

SIP to H323 video calls using H.239 are not supported.

B.

Redundancy for H.323 calls is not supported.

C.

H.239 calls are not supported over intercluster trunks with Cisco Unified Communications Manager.

D.

H.239 is not supported with third-party endpoints.

E.

Cisco Unified Communications Manager supports a maximum of three video channels when using H.239.

 

Correct Answer: AB

Explanation:

Restriction for Support for H.239

The Support for H.239 feature has the following restrictions:

Interworking SIP-H.323 Video calls using H.239 is not supported.

Redundancy for H.323 calls is not supported.

A fast-start request cannot include a request to open an H.239 additional video channel as it is not supported.

H.239 systems based on H.235 is not supported.

The SBC does not support call transfer for H.323 calls. When an H.323 endpoint is placed on hold, it closes its media as well as video channels.

 

Reference:

http://www.cisco.com/c/en/us/td/docs/routers/asr1000/configuration/guide/sbcu/2_xe/sbcu_ 2_xe_book/sbc_h239.html

 

 

QUESTION 148

Which codec complexity mode, when deployed on Cisco IOS routers with DSPs using the C5510 chipset, supports the most G.711 calls per DSP?

 

A.

Low

B.

Medium

C.

High

D.

Secure

E.

Flex

 

Correct Answer: E

Explanation:

The flex parameter allows the complexity to automatically adjust to either medium or high complexity depending on the needs of a call. For example, i
f a call uses the G.711 codec, the C5510 chipset automatically adjusts to the medium-complexity mode. However, if the call uses G.729, the C5510 chipset uses the high complexity mode.

QUESTION 149

Refer to the exhibit. From this NFAS-enabled T1 PRI configuration on a Cisco IOS router, how many bearer channels are available to carry voice traffic?

 

clip_image004

 

A.

91

B.

92

C.

93

D.

94

E.

95

 

Correct Answer: D

Explanation:

In this configuration controller T1/0 (primary) and T1/1 (backup) have each 23 available B channels, because one channel in each controller is reserved respectively for primary and backup D channel for signaling control. T2/0 and T2/1 each have 24 B channels available. So the correct answer should be 94.

 

 

QUESTION 150

In Cisco IOS routers, which chipset is the PVDM-12 DSP hardware based on?

 

A.

C542

B.

C549

C.

C5510

D.

C5421

E.

C5409

 

Correct Answer: B

Explanation:

NM-HDV has five SIMM sockets (called Banks) that hold the PVDM-12 cards. Each PVDM-12 card contains three TI 549 DSPs.

Reference:

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/7x/uc7_0/media.html

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