[Free] 2017(Apr) Ensurepass Passguide Cisco 400-051 Latest Dumps 171-180

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CCIE Collaboration Written Exam

QUESTION 171

Assume the IP address of Cisco Unity Express is 10.1.1.1. Which URL provides Cisco Unity Express end users with a GUI interface to access and manage their messages and mailbox settings?

 

A.

http://10.1.1.1/Web/Common/Login.do

B.

http://10.1.1.1/ciscopca

C.

http://10.1.1.1/user

D.

http://10.1.1.1/inbox

E.

http://10.1.1.1/

 

Correct Answer: C

Explanation:

For user access cisco unity has predefined url and it is http://10.1.1.1/user

 

QUESTION 172

Refer to the exhibit. Assume the B-ACD configuration on a Cisco IOS 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?

 

clip_image001

 

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.

 

Correct Answer: C

Explanation:

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

 

 

QUESTION 173

Which message is used by a Cisco IOS MGCP gateway to send periodic keepalives to its call agent?

 

A.

CRCX

B.

AUCX

C.

NTFY

D.

RQNT

E.

200 OK

 

Correct Answer: C

Explanation:

The gateway maintains this connection by sending empty MGCP Notify (NTFY) keepalive messages to Cisco CallManager at 15-second intervals. If the active Cisco CallManager fails to acknowledge receipt of the keepalive message within 30 seconds, the gateway attempts to switch over to the next highest order Cisco CallManager server that is available.

If none of the Cisco CallManager servers respond, the gateway switches into fallback mode and reverts to its default H.323 session application for basic call control support of IP telephony activity in the network.

 

 

QUESTION 174

Which enrollment method does a Cisco IOS VPN router trustpoint use to install a Certificate Authority Proxy Function certificate for LSC validation of a Cisco IP phone client?

 

A.

HTTP proxy server

B.

certificate authority server URL

C.

terminal

D.

self-signed

E.

registration authority

 

Correct Answer: C

Explanation:

Router(config)#crypto pki trustpoint CAPF

enrollment terminal

authorization username subjectname commonname

revocation-check none

Router(config)#crypto pki authenticate CAPF

Router(config)#

Things to Note:

The enrollment method is terminal because the certificate has to be manually installed on the Router.

 

Reference:

http://www.cisco.com/c/en/us/support/docs/ios-nx-os-software/authentication-authorization-accounting-aaa/116313-configure-anyconnect-00.html

 

 

QUESTION 175

In Cisco IOS routers, which chipset is the PVDM2-32 DSP hardware based on?

 

A.

C5441

B.

C549

C.

C5510

D.

C5421

E.

Broadcom 1500

 

Correct Answer: C

Explanation:

Table 6-2 DSP Resources on Cisco IOS Hardware Platforms with C5510 Chipset

 

Hardware Module or Chassis

DSP Configuration

Maximum Number of Voice Terminations (Calls) per DSP and per Module

Medium Complexity

(8 calls per DSP)

High Complexity

(6 calls per DSP)

Flex Mode1

(240 MIPS per DSP)

VG-224

Fixed at 4 DSPs

N/A

24 calls per platform

Supported codecs:

G.711 (a-law, mu-law)

G.729a

N/A

NM-HD-1V2

Fixed at 1 DSP

4 calls per NM

4 calls per NM

240 MIPS per NM

NM-HD-2V

Fixed at 1 DSP

8 calls per NM

6 calls per NM

240 MIPS per NM

NM-HD-2VE

Fixed at 3 DSPs

24 calls per NM

18 calls per NM

720 MIPS per NM

NM-HDV2

NM-HDV2-2T1/E1

NM-HDV2-1T1/E1

1 to 4 of:

PVDM2-83 (½DSP)PVDM2-16 (1 DSP)PVDM2-32 (2 DSPs)PVDM2-48 (3 DSPs)PVDM2- 64 (4 DSPs)

Calls per PVDM:

48162432

Calls per PVDM:

36121824

MIPS per PVDM:

120240480720960

 

Reference:

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/4x/42media.html

 

 

QUESTION 176

Which codec is supported on the Cisco PVDM2 DSP modules but not on the PVDM3 DSP modules?

 

A.

G.728

B.

G.729B

C.

G.729AB

D.

G.723

E.

G.726

 

Correct Answer: D

Explanation:

All codecs that are supported on the PVDM2 are supported on the PVDM3, except that the PVDM3 does not support the G.723 (G.723.1 and G.723.1A) codecs. The PVDM2 can be used to provide G.723 codec support or the G.729 codec can be as an alternative on the PVDM3

 

Reference:

http://www.cisco.com/c/en/us/td/docs/routers/access/1900/software/configuration/guide/Sof tware_Configuration/pvdm3_config.html

 

 

QUESTION 177

When multiple greetings are enabled on Cisco Unity Express, which greeting will take the highest precedence?

 

A.

standard

B.

meeting

C.

busy

D.

closed

E.

internal

 

Correct Answer: B

Explanation:

Meeting greeting has the highest priority because it is set by the user when he doesn’t want to take the call and notices the caller he is online.

 

 

QUESTION 178

Which two analog telephony signaling methods are most vulnerable to glare conditions? (Choose two.)

 

A.

FXS Loop-start

B.

FXO Ground-start

C.

E&M Wink-start

D.

E&M Delay-dial

E.

E&M Immediate-start

F.

E&M Feature Group D

 

Correct Answer: AE

Explanation:

The loop start signaling method is more common and is typically used by residential phone lines. When a voice port is configured with loop start signaling, the device (telephone) closes the circuit loop that signals the CO voice port to provide dial tone; an incoming call is signaled on the CO by supplying a predefined voltage on the line. The loop start signaling method has one main disadvantage in that it has no method of preventing both sides of the connection from attempting to seize the line at the same time; this condition is referred to as glare. Because of this, loop start signaling is typically not used on high demand circuits.

 

With immediate-start, the calling side of the connection seizes the line by going off hook on the E-lead and address information is sent using dual-tone multifrequency (DTMF) digits. Immediate start signaling is vulnerable to glare just like loop-start signaling.

 

 

QUESTION 179

Which statement describes the question mark wildcard character in a SIP trigger that is configured on Cisco Unity Express?

 

A.

It matches any single digit in the range 0 through 9.

B.

It matches one or more digits in the range 0 through 9.

C.

It matches zero or more occurrences of the preceding digit or wildcard value.

D.

It matches one or more occurrences of the preceding digit or wildcard value.

E.

It matches any single digit in the range 0 through 9, when used within square brackets.

 

Correct Answer: C

Explanation:

Table 5-2 Trigger Pattern Wildcards and Special Characters

 

Character

Description

Examples

X

The X wildcard matches any single digit in the range 0 through 9.

The trigger pattern 9XXX matches all numbers in the range 9000 through 9999.

!

The exclamation point (!) wildcard matches one or more digits in the range 0 through 9. The trigger pattern 91! matches all numbers in the range 910 through 91999999999999999999999999999999.

?

The question mark (?) wildcard matches zero or more occurrences of the preceding digit or wildcard value.

The trigger pattern 91X? matches all numbers in the range 91 through 91999999999999999999999999999999.

+

The plus sign (+) wildcard matches one or more occurrences of the preceding digit or wildcard value.

The trigger pattern 91X+ matches all numbers in the range 910 through 91999999999999999999999999999999.

[ ]

The square bracket ([ ]) characters enclose a range of values. The trigger pattern 813510[012345] matches all numbers in the range 8135100 through 8135105.

The hyphen (-) character, used with the square brackets, denotes a range of values. The trigger pattern 813510[0-5] matches all numbers in the range 8135100 through 8135105.

^

The circumflex (^) character, used with the square brackets, negates a range of values. Ensure that it is the first character following the opening bracket ([).

Each trigger pattern can have only one ^ character.

The trigger pattern 813510[^0-5] matches all numbers in the range 8135106.

 

QUESTION 180

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

 

Correct 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 SIP phone/trunk

Max member of Voice Hunt-Group will be 32

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