[Free] 2017(Apr) Ensurepass Passguide Cisco 400-051 Latest Dumps 151-160

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CCIE Collaboration Written Exam

QUESTION 151

Refer to the exhibit. Ephone 1 has three active calls. The first two calls were inbound calls, which the user put on hold to place a third call outbound. What will happen on ephone 1 when a fourth call arrives for extension 2001?

 

clip_image001

 

A.

The fourth call will be delivered to ephone 1 because it only received two inbound calls, one call less than the busy-trigger-per-button setting.

B.

The fourth call will be delivered to ephone 1 because the huntstop channel setting is not yet saturated.

C.

The fourth call will be delivered to ephone 1 because it can handle up to five calls on each button.

D.

The fourth call will be held temporarily by the IOS Software until ephone 1 disconnects one of the active calls.

E.

The fourth call will not be delivered and the caller will hear a user busy tone.

 

Correct Answer: E

Explanation:

Because on line maximum 4 calls can be placed when user put the call on hold is consume a channel and reach the maximum number of calls on line.

 

 

QUESTION 152

How many signaling bits are there in each T1 time slot using channel associated signaling with Super Frame?

 

A.

1

B.

2

C.

4

D.

8

E.

12

Correct Answer: B

Explanation:

Each T1 CAS has 24 channels that can transmit 8 bits per channel each. This gives us a total of 192 bits. The T1 has one additional bit for framing, bringing the total to 193 bits. Two types of line coding can be used on a T1 CAS. The first type of line coding is called Super Frame (SF). This is an older and less – efficient type of framing. Super Frame bundles 12 of these 193 – bit frames together for transport. It then uses the even ?numbered frames as signaling bits. The T1 CAS signaling then looks at every sixth frame for signaling information. This comes out to be 2 bits that are referred to as the A and B bits, which reside in frames 6 and 12.

 

 

QUESTION 153

Which statement about what happens to a Cisco IOS SIP VoIP dial-peer that never received any responses to its out-of-dialog OPTIONS ping is true?

 

A.

Its admin state will be up but operational state will be down.

B.

Its admin and operational state will be down.

C.

Its admin and operational state will remain up.

D.

Its admin state will be up but operational state will be “busy-out”.

E.

Its admin and operational state will be “busy-out”.

 

Correct Answer: A

Explanation:

You can check the validity of your dial peer configuration by performing the following tasks:

 

If you have relatively few dial peers configured, you can use the show dial-peer voice command to verify that the configuration is correct. To display a specific dial peer or to display all configured dial peers, use this command. The following is sample output from the show dial-peer voice command for a specific VoIP dial peer:

router# show dial-peer voice 10

 

VoiceOverIpPeer10

tag = 10, dest-pat = \Q’,

incall-number = \Q+14087′,

group = 0, Admin state is up, Operation state is down

Permission is Answer,

type = voip, session-target = \Q’,

sess-proto = cisco, req-qos = bestEffort,

acc-qos = bestEffort,

fax-rate = voice, codec = g729r8,

Expect factor = 10,Icpif = 30, VAD = disabled, Poor QOV Trap = disabled, Connect Time = 0, Charged Units = 0

Successful Calls = 0, Failed Calls = 0

Accepted Calls = 0, Refused Calls = 0

Last Disconnect Cause is “”

Last Disconnect Text is “”

Last Setup Time = 0

 

To show the dial peer that matches a particular number (destination pattern), use the show dialplan number command. The following example displays the VoIP dial peer associated with the destination pattern 51234:

router# show dialplan number 51234

 

Macro Exp.: 14085551234

VoiceOverIpPeer1004

tag = 1004, destination-pattern = \Q+1408555….’,

answer-address = \Q’,

group = 1004, Admin state is up, Operation state is up

type = voip, session-target = \Qipv4:1.13.24.0′,

ip precedence: 0 UDP checksum = disabled

session-protocol =
cisco, req-qos = best-effort,

acc-qos = best-effort,

fax-rate = voice, codec = g729r8,

Expect factor = 10, Icpif = 30,

VAD = enabled, Poor QOV Trap = disabled

Connect Time = 0, Charged Units = 0

Successful Calls = 0, Failed Calls = 0

Accepted Calls = 0, Refused Calls = 0

Last Disconnect Cause is “”

Last Disconnect Text is “”

Last Setup Time = 0

Matched: +14085551234 Digits: 7

Target: ipv4:172.13.24.0

 

 

QUESTION 154

Refer to the exhibit. Which ephone-dn can join the hunt group whenever a wild card slot becomes available?

 

clip_image002

 

A.

ephone-dn 1

B.

ephone-dn 2

C.

ephone-dn 3

D.

ephone-dn 4

E.

ephone-dn 6

 

Correct Answer: C

Explanation:

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/command/reference/cme_cr/cme_e1ht.html

 

 

QUESTION 155

Which two statements describe characteristics of Cisco Unified Border Element high availability, prior to Cisco IOS release 15.2.3T, using a box-to-box redundancy configuration? (Choose two.)

 

A.

It leverages HSRP for router redundancy and GLBP for load sharing between a pair of routers.

B.

Cisco Unified Border Element session information is check-pointed across the active and standby router pair.

C.

It supports media and signal preservation when a switchover occurs.

D.

Only media streams are preserved when a switchover occurs.

E.

It can leverage either HSRP or VRRP for router redundancy.

F.

The SIP media signal must be bound to the loopback interface.

 

Correct Answer: BD

Explanation:

Configure box-to-box redundancy when you:

Expect the behavior of the CSSs to be active/standby (only the master CSS processes flows)

Can configure a dedicated Fast Ethernet (FE) link between the CSSs for the VRRP

 

clip_image003

Do not configure box-to-box redundancy when you:

Expect the behavior of the CSSs to be active-active (both CSSs processing flows). Use VIP redundancy instead.

Cannot configure a dedicated FE link between the CSSs.

Require the connection of a Layer 2 device between the redundant CSS peers.

 

 

QUESTION 156

Which SIP message element is mapped to QSIG FACILITY messages being tunneled across a SIP trunk between two Cisco IOS gateways?

 

A.

SIP UPDATE

B.

SIP OPTIONS

C.

SIP SUBSCRIBE

D.

SIP INFO

E.

SIP NOTIFY

 

Correct Answer: D

Explanation:

Mapping of QSIG Message Elements to SIP Message Elements This section lists QSIG message elements and their associated SIP message elements when QSIG messages are tunneled over a SIP trunk.

 

QSIG FACILITY/NOTIFY/INFO

<–>

SIP INFO

 

QSIG SETUP

<–>

SIP INVITE

 

QSIG ALERTING

<–>

SIP 180 RINGING

 

QSIG PROGRESS

<–>

SIP 183 PROGRESS

 

QSIG CONNECT

<–>

SIP 200 OK

 

QSIG DISCONNECT

<–>

SIP BYE/CANCEL/4xx–6xx Response

 

Reference:

http://www.cisco.com/c/en/us/td/docs/ios/voice/sip/configuration/guide/15_0/sip_15_0_book /tunneling_qsig.html

 

 

QUESTION 157

Refer to the exhibit. Three calls are active on ephone 1. Assume ephone 2 will remain idle. How many additional calls can be placed from ephone 1?

 

clip_image004

 

A.

0

B.

1

C.

2

D.

3

E.

5

 

Correct Answer: C

Explanation:

As we can see m
ax-calls-per-button set to 5 and 3 calls are active. So, 2 calls remain.

 

 

QUESTION 158

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 rang both phones and were answered by IP phone 2. Which option describes what will happen to the third incoming call?

 

clip_image005

 

A.

Both phones ring, but only IP phone 1 can answer the call.

B.

Both phones ring and either phone can answer the call.

C.

Only IP phone 1 rings and 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: C

Explanation:

As we can see busy-trigger-per-button set to 2 in voice register pool 1(IP Phone 1). So, IP Phone 1’s channel is free for receiving incoming calls and right now IP Phone 2 is busy answering call.QUESTION 159

Refer to the exhibit. How many simultaneous inbound calls can be handled by these two IP phones?

 

clip_image006

 

A.

2

B.

4

C.

6

D.

9

E.

10

 

Correct Answer: A

Explanation:

The line is configured as shared line so it will support maximum two calls at a time.

 

 

QUESTION 160

Which Cisco Unified Communications Manager Express ephone button configuration separator enables overflow lines when the primary line for an overlay button is occupied by an active call?

 

A.

o

B.

c

C.

w

D.

x

E.

:

 

Correct Answer: D

Explanation:

x expansion/overflow, define additional expansion lines that are used when the primary line for an overlay button is occupied by an active call.

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