Section A

QUESTION NO: 1 You are the voice technician at TestKing. TestKing has its offices in Great Britain. You need to install a Cisco router to support IP Telephony services with direct-connected analog phones. You need to emulate the local PSTN provider.

What FXS port parameter do you need to change?

A. Pulse

B. Signal

C. Cptone

D. Busyout

E. Description

Answer: C

QUESTION NO: 2 TestKing distributes computer components and has warehouses in New York and Chicago. Headquarters is located in Washington, DC. To keep costs low, all inside sales associates are located at headquarters.

Your want to provide a direct analog telephone connection to the inside sales teams from the pick-up counters at the warehouses. This connection should not require the inside sales teams to dial any digits.

One of the warehouses is having a problem with their sales phone.

You receive the following output:

altwhse#show voice port 1/0:1

Foreign Exchange Office

Type of VoicePort is E&M

Operation State is DORMANT

Administrative State is UP

The Last Interface Down Failure Cause is Administrative Shutdown

Description is not set

Noise Regeneration is enabled

Non Linear Processing is enabled

Music On Hold Threshold is Set to –38 dBm In Gain is Set to 0 dB Out Attenuation is Set to 0 dB Echo Cancellation is enabled Echo Cancel Coverage is set to 8 ms Connection Mode is plar Connection Number is 2000 Initial Time Out is set to 10 s Interdigit Time Out is set to 10 s Call-Disconnect Time Out is set to 60 s Ringing Time Out is set to 180 s Region Tone is set for US

What is the cause of the problem?

A. VoicePort type is incorrect.

B. Echo cancellation is enabled.

C. Connection Number is not required.

D. Interdigit Time Out is set to 10 seconds.

Answer: A

QUESTION NO: 3 You are the Voice technician at TestKing. Your newly appointed TestKing trainee wants to know what types of trunks Cisco support with the connection trunk command.

What will your reply be? (Choose three)

A. FXS to FXS trunks, FXS to FXO trunks, and FXS to E&M trunks

B. FXS to FXS trunks, FXS to FXO trunks, and E&M to E&M trunks

C. FXS to FXS trunks, FXO to FXO trunks, and E&M to E&M trunks

D. FXO to FXS trunks, FXO to FXO trunks, and E&M to E&M trunks

E. FXS to FXS trunks, FXS to E&M trunks, and E&M to E&M trunks

Answer: B

QUESTION NO: 4 What happens if no incoming dial peer matches a router or gateway?

A. The incoming call leg takes an alternate path.

B. The incoming call leg matches the default dial peer.

C. The incoming call leg sends a busy to the originator.

D. The incoming call leg is denied and the call is dropped.

Answer: B

QUESTION NO: 5 You are the network engineer at TestKing. TestKing has its headquarters in New York and a branch office in New Hamshire. You want to configure a permanent connection between the PBX at headquarters and the PBX at the branch office.

The following configuration is used at the New York site:

dial-peer voice 20 pots  destination-pattern 20  port 1.0:1

dial-peer voice 41 voip  destination-pattern 41 session target ipv4:10.2.0.20

The following configuration is used at the New Hamshire site:

dial-peer voice 40 pots  destination-pattern 41  port 1.0:1

dial-peer voice 20 voip  destination-pattern 20 session target ipv4:10.4.1.41

What must be added to the voice port configuration at the New York site?

A. connection trunk 20

B. connection trunk 41

C. connection tie-line 20

D. connection tie-line 41

Answer: B Explanation: You must specify the same number in the connection trunk voice port command as in the appropriate dial peer destination-pattern command in order to create a permanent trunk.

QUESTION NO: 6 TestKing sells managed IP Phone service to businesses in multi-tenant units. TestKing has POPs in many cities, so all of their dial peer patterns are based on 10 digit numbers. Users dial 9 for local calls, followed by the 7 digital local number.

The following dial peer has been configured in a New York POP:

dial-peer voice 595 pots  destination-pattern 595  port 1/0:24

A user dials a local number, 9-638-4422. What command must be configured in the gateway to allow the call to complete?

A. prefix 595

B. forward-digits 7

C. rule 1 9…….595…….

D. forward 9…….595…….

E. num-exp 9…….595…….

Answer: E

QUESTION NO: 7 You are the Voice technician at TestKing. Your newly appointed TestKing trainee wants to know what configuration would define a destination pattern for all of the 1000 and 2000 range of extensions starting with the numbers 555.

What will your reply be?

A. 5551…

B. 5552…

C. 555[1-2]…

D. 555[100-200]…

E. 555[1000-2000]…

Answer: C

QUESTION NO: 8 You are the Voice technician at TestKing. The TestKing network uses RTCP. Your newly appointed TestKing trainee wants to know what RTCP does.

What will your reply be?

A. It provides independent services irrespective of RTP.

B. It provides compression techniques to save bandwidth.

C. It provides in-band control information for an RTP flow.

D. It provides out-of-band control information for an RTP flow.

Answer: D Explanation: RTCP provides out-of-band control information for an RTP flow.

QUESTION NO: 9 You are the Voice technician at TestKing. The TestKing network uses VoIP. Your newly appointed TestKing trainee wants to know what the disadvantage of using VoIP rather than VoFR or VoATM are.

What will your reply be?

A. Data can arrive out of sequence.

B. Networks are complicated to design.

C. Data units can arrive out of sequence.

D. Network failures are not automatically found.

Answer: C

QUESTION NO: 10 You are the network engineer at TestKing. You have configured real-time call control processing on the TestKing VoIP network. You want to verify this configuration.

What command should you use?

A. debug voip rtcp

B. debug call control

C. debug voip ccapi inout

D. debug voip call control

E. debug voice call control

Answer: C

QUESTION NO: 11 You are the network engineer at TestKing. Your newly appointed TestKing trainee wants to know what a voice gateway is.

What will your reply be?

A. It is a device that connects two dissimilar networks.

B. It is a device that transports voice and restricts data.

C. It is a device that can support only a distributed call processing model.

D. It is a device that cannot be connected to the traditional PSTN network.

Answer: B

QUESTION NO: 12

TestKing has its headquarters in New York and branch offices in Delaware, Detroit and Denver. Each office has an analog phone at each location. These phones are connected to an FXS port on the on-site router. The Finance department at the Denver office is unable to make any phone class from these analog phones.

You receive the following output:

2611#s voice port 1/0/0

Foreign Exchange Station 1/0/0 Slot is 1, Sub-unit is 0,

Port is 0

Type of VoicePort is FXS

Operation State is DORMANT

Administrative State is UP

No Interface Down Failure

Description is not set

Noise Regeneration is enabled

Non Linear Processing is enabled

Non Linear Mute is disabled

Non Linear Threshold is –21 dB

Music On Hold Threshold is Set to 38 dBm

In Gain is Set to 0 dB

Out Attention is Set to 3 dB

Echo Cancellation is enabled

Echo Cancellation NLP mute is disabled

Echo Cancellation NLP threshold is –21 dB

Echo Cancel Coverage is set to default

Playout-delay Mode is set to default

Playout-delay Nominal is set to 60 ms

Playout-delay Maximal is set to 200 ms

Playout-delay Minimum mode is set to default, value 40 ms

Playout-delay Fax is set to 300 ms

Connection Mode is normal

Connection Number is not set

Initial Time Out is set to 10 s

Interdigit Time Out is set to 10 s

Call Disconnect Time Out is set to 60 s

Ringing Time Out is set to 180

Wait Release Time Out is set to 30 s

Companding Type is u-law

Region Tone is set for US

Analog Info Follows:

Currently processing none

Maintenance Mode Set to None (not in mtc mode)

Number of signaling protocol errors are 0

Impedance is set to 600r Ohm Station name None, Station number None

Voice card specific Info Follows: Signal Type is groundStart Ring Frequency is 25 Hz Hook Status is On Hook Ring Active Status is inactiveRing Ground Status is inactiveTip Ground Status is inactive Digit Duration Status is inactive Digit Duration Timing is set to 100 ms InterDigit Duration Timing is set to 100 ms No disconnect acknowledge Ring Cadence is defined by CPTone Selection Ring Cadance are [20 40] * 100 msec

2611#

What is the cause of this problem?

A. The cptone is incorrect

B. The dial-type is incorrect

C. The signal type is incorrect

D. The playout-delay is incorrect

E. The disconnect-ack is incorrect

Answer: C

QUESTION NO: 13 You are the network engineer at TestKing. TestKing has been using the following dial peer codec command:

Codec g729r8

You reconfigure the dial peers with the following command:

Codec g729ar8 bytes 10

How will this reconfiguration affect the voice network bandwidth and delay characteristics? (Choose two.)

A. There will be no change.

B. Delay will increase on a per call basis.

C. Delay will decrease on a per call basis.

D. Bandwidth consumption will decrease on a per call basis.

E. Bandwidth consumption will increase on a per call basis.

Answer: C, E

QUESTION NO: 14 You are the network engineer at TestKing. Your newly appointed TestKing trainee wants to know which features render VAD ineffective.

What will your reply be? (Choose two.)

A. Fax

B. CNG

C. Call waiting

D. Music on hold

E. Call forwarding

Answer: A, D

QUESTION NO: 15 You are the VoIP engineer at TestKing. A TestKing user complains that she gets a busy tone instead of a dial tone when she tries to call another user. You want to troubleshoot this problem.

What command should you use?

A. show voice dsp

B. show voice path

C. show voice connection

D. show voice port summary

E. show dial-peer voice summary

Answer: A

QUESTION NO: 16 You are the Voice engineer at TestKing. Your newly appointed TestKing trainee wants to know what compressed RTP does.

What will your reply be?

A. It significantly reduce packet delay

B. It significantly reduce total bandwidth

C. It significantly reduce Frame Relay overhead

D. It significantly reduce the total number of packets

Answer: B

QUESTION NO: 17 You are the network engineer at TestKing. TestKing has its offices in London. You are installing a voice gateway.

What do you need to verify? (Choose two.)

A. The PSTN standards in England.

B. Encryption capabilities legalities.

C. The service provider installing the gateway.

D. Supplementary service including fax and modem.

Answer: A, B

QUESTION NO: 18 What identifies an MGCP endpoint?

A. A two part identifier that consists of the telephone number and local name of the user.

B. A two part identifier that consists of the telephone number and remote name of the user.

C. A two part identifier that consists of the domain name of the user and the IP address of the gateway.

D. A two part identifier that consists of the local name of the user and the domain name of the gateway.

Answer: D

QUESTION NO: 19 You are the network engineer at TestKing. You to connect a Cisco voice gateway to a PBX or the PSTN via ISDN (PRI, QSIG, BRI).

What are two attributes of the PBX/PSTN switch that must be known to understand which features to configure on the voice gateway to connect successfully to it? (Choose two)

A. Whether Q.921 or Q.931 is supported by the PBX/PSTN switch.

B. Whether Symmetric mode is supported by the PBX/PSTN switch.

C. Which PRI/BRI switch-type is supported by the PBX/PSTN switch.

D. Whether network or user side is supported by the PBX/PSTN switch.

E. Whether wink, delay dial, or immediate dial is supported by the PBX/PSTN switch.

Answer: C, D

QUESTION NO: 20 Your newly appointed TestKing trainee wants to know what protocol negotiates the codec type for H.323 sessions.

What will your reply be?

A. H.225

B. H.245

C. Q.931

D. Q.932

E. H.320

Answer: B

QUESTION NO: 21 You are the Voice technician at TestKing. Your newly appointed TestKing trainee wants to know what request method initiates a SIP call setup.

What will your reply be?

A. ACK

B. INVITE

C. OPTIONS

D. REGISTER

E. DISCOVER

Answer: B

QUESTION NO: 22 You are the network engineer at TestKing. You want to verify the registration of the gateway with the call agent.

Which show command should you use?

A. show mgcp

B. show call agent

C. show gateway mgcp

D. show endpoint mgcp

E. show call active voice

Answer: A

QUESTION NO: 23 You are the Voice technician at TestKing. Your newly appointed TestKing trainee wants to know what makes it possible for gatekeepers to communicate with each other.

What will your reply be?

A. RTP

B. RAS channel

C. call signaling channel

D. H.245 control channel

E. Q.931 control channel

Answer: B

QUESTION NO: 24 What does gateway require to function as a translating gateway?

A. The capacity to translate the audio.

B. The ability to recognize the call control procedures of both connecting endpoints.

C. The ability to establish separate RTP sessions with the originating and terminating endpoints.

D. The ability to recognize the call control procedures for at least one of the connecting endpoints.

Answer: B

QUESTION NO: 25 You are the Voice engineer at TestKing. Numerous TestKing users complain that they are unable to complete calls through the MGCP network. You want to verify the extent of the problem by reviewing a count of the successful and unsuccessful control commands.

Which command should you use?

A. show mgcp

B. show mgcp count

C. show mgcp statistics

D. show call active voice

E. show call history voice

Answer: C

QUESTION NO: 26 Which of the following call control models are based on decentralized call control? (Choose two.)

A. SIP

B. CAS

C. H.323

D. Q.931

E. MGCP

Answer: A, C

QUESTION NO: 27 You are the Voice engineer at TestKing. TestKing has an H.323 gatekeeper. Your newly appointed TestKing trainee wants to know what functions are supported by this gatekeeper.

What will your reply be? (Choose four.)

A. It provides services to registered endpoints.

B. It converts an alias address to an IP address.

C. It responds to bandwidth requests and modifications.

D. It provides translation between audio, video, and data formats.

E. It provides conversion between call setup signals and procedures.

F. It limits access to network resources based on call bandwidth restrictions.

G. It provides conversion between communication control signals and procedures.

Answer: A, B, C, F

QUESTION NO: 28 You are the network engineer at TestKing. You are configuring a connection to a SIP proxy server.

Which command would you use to specify the IP address of the server?

A. sip-ua  sip-server ipv4:1.2.3.4

B.      sip-ua  sip-server target:1.2.3.4

C.      dial-peer voice 1 voip session target sip:1.2.3.4

D.      dial-peer voice 1 voip session target sip-server:1.2.3.4

Answer: A

QUESTION NO: 29 With regard to SIP and SDP, which of the following statements is true?

A. SIP is similar to RAS and SDP is similar to RTP

B. SIP is similar to RTP and SDP is similar to RAS

C. SIP is similar to H.225 and SDP is similar to H.245

D. SIP is similar to H.245 and SDP is similar to H.323

E. SIP is similar to H.323 and SDP is similar to H.225

Answer: C

QUESTION NO: 30 You are the Voice technician at TestKing 60. Your newly appointed TestKing trainee wants to know on what type of port you would set impedance.

What will your reply be?

A. T1

B. E1

C. FXS

D. FXO

E. E&M

Answer: D

QUESTION NO: 31 You are the network engineer at TestKing. You are deploying an IP telephony solution using MGCP. The call agent expects the gateway to use UDP port 2427 but an application on the TestKing network is already using that port. You want to use port 4662 instead.

Which command would allow you to change the UDP port that the call agents and gateway communicate on?

A. Router(config)# mgcp UDP 4662

B. Router(config)# mgcp gateway 4662

C. Router(config)# mgcp call-agent 4662

D. Router(config-dial-peer)#application MGCPAPP 4662

E. Router(config)# mgcp default-package gm-package 4662

Answer: C

QUESTION NO: 32 Upon which protocol model is the SIP protocol based?

A. HTML

B. H.323

C. Q.931

D. MGCP

E. HTPP/WWW

Answer: E

QUESTION NO: 33 You are the network engineer at TestKing. Your newly appointed TestKing trainee wants to know how an endpoint determines the address of the gatekeeper.

What will your reply be? (Choose two.)

A. The endpoint issues a GCP.

B. The endpoint issues a GRQ.

C. The endpoint queries the registrar server.

D. The endpoint is preconfigured to recognize the domain name or IP address of its gatekeeper.

Answer: B, D


QUESTION NO: 34 You are the network engineer at TestKing. The TestKing network is shown in the following exhibit:


If the show gatekeeper calls command shows a total of five active calls on the gatekeeper, how many call legs would the show call active voicecommand display on Gateway A?

A. 2

B. 5

C. 6

D. 10

E. 15

Answer: D

QUESTION NO: 35 You are the network engineer at TestKing. Your newly appointed TestKing trainee wants to know which functions use UDP as their transport mechanism.

What will your reply be? (Choose two)

A. RTP

B. RAS control function

C. call signaling function

D. H.245 control function

Answer: A, B

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