Braindumps: Dumps for 642-432 Exam Brain Dump

Braindumps for "642-432" Exam

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Question 1.
Which three types of trunks does Cisco support with the connection trunk command?
(Choose three)

A. FXS to FXS trunks
B. FXS to FXO trunks
C. FXO to FXO trunks
D. E&M to FXS trunks
E. E&M to FXO trunks
F. E&M to E&M trunks

Answer: A, B, F

Question 2.
If no incoming dial peer matches a router or gateway, the incoming call leg _____.

A. Takes an alternate path.
B. Matches the default dial peer.
C. Sends a busy to the originator.
D. Is denied and the call does not complete.

Answer: B

Question 3.
The following configuration is used at Site A:
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 site B:
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

To configure a permanent connection between the PBXs, what must be added to the voice port configuration at site A?

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 4.
A telephony service provider sells managed IP Phone service to businesses in multi-tenant units.
The provider 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.

In a Chicago POP, the following dial peer has been configured:
dial-peer voice 312 pots
destination-pattern 312
port 1/0:24
A user dials a local number, 9-555-0597.

What command must be configured in the gateway to allow the call to complete?

A. prefix 312
B. forward-digits 7
C. rule 1 9.......312.......
D. num-exp 9.......312.......

Answer: D

Question 5.
Which configuration defines a destination pattern for all of the 1000 and 2000 range of extensions starting with the numbers 555?

A. 5551...
B. 5552...
C. 555[1-2]...
D. 555[1000-2000]...

Answer: C

Question 6.
What does RTCP provide?

A. Independent services irrespective of RTP.
B. Compression techniques to save bandwidth.
C. In-band control information for an RTP flow.
D. Out-of-band control information for an RTP flow.

Answer: D

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

Question 7.
What is the disadvantage of using VoIP rather than VoFR or VoATM?

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 8.
An MGCP endpoint is identified by a two part identifier that consists of the ______.

A. Telephone number and local name of the user.
B. Telephone number and remote name of the user.
C. Domain name of the user and the IP address of the gateway.
D. Local name of the user and the domain name of the gateway.

Answer: D

Question 9.
A customer needs 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 10.
Which protocol negotiates codec type for H.323 sessions?

A. H.225
B. H.245
C. Q.931
D. H.320

Answer: B

Question 11.
Which request method initiates a SIP call setup?

A. ACK
B. INVITE
C. OPTIONS
D. REGISTER

Answer: B

Question 12.
Which show command displays the registration of the gateway with the call agent?

A. show mgcp
B. show gateway mgcp
C. show endpoint mgcp
D. show call active voice

Answer: A

Question 13.
When gatekeepers communicate with each other, what do they use?

A. RTP
B. RAS channel
C. call signaling channel
D. H.245 control channel

Answer: B

Question 14.
To function as a translating gateway, the gateway must ______.

A. Have the capacity to translate the audio.
B. Recognize the call control procedures of both connecting endpoints.
C. Establish separate RTP sessions with the originating and terminating endpoints.
D. Recognize the call control procedures or at least one of the connecting endpoints.

Answer: B

Question 15.
Your customer is having problems completing calls through the MGCP network.
Which command displays a count of the successful and unsuccessful control commands?

A. show mgcp
B. show mgcp statistics
C. show call active voice
D. show call history voice
E. show mgcp count

Answer: B

Question 16.
Which two call control models are based on decentralized call control? (Choose two)

A. SIP`
B. CAS
C. H.323
D. MGCP
E. Q.931

Answer: A, C

Question 17.
Which four functions are supported by an H.323 gatekeeper? (Choose four)

A. Providing services to registered endpoints.
B. Converting an alias address to an IP address.
C. Translation between audio, video, and data formats.
D. Responding to bandwidth requests and modifications.
E. Conversion between call setup signals and procedures.
F. Conversion between communication control signals and procedures.
G. Limiting access to network resources based on call bandwidth restrictions.

Answer: A, B, D, G

Question 18.
Which command is used to specify the IP address of a SIP proxy 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 19.
SIP is similar to H.225 and SDP is similar to ____.

A. RAS
B. RTP
C. H.245
D. H.323

Answer: C

Question 20.
Impedance is set on what type of port?

A. T1
B. FXS
C. FXO
D. E&M

Answer: C

Question 21.
You have a customer that is deploying an IP telephony solution using MGCP. They understand that the call agent expects the gateway to use UDP port 2427. The customer would like to use another port because of a conflict with another application on their network.

If they want to use port 5000, which command allows the customer to change the UDP port their call agents and gateway communicate on?

A. Router (config)# mgcp UDP 5000
B. Router (config)# mgcp call-agent 5000
C. Router (config-dial-peer)#application MGCPAPP 5000
D. Router (config)# mgcp default-package gm-package 5000

Answer: B

Question 22.
The SIP protocol is based upon which other protocol model?

A. HTML
B. H.323
C. MGCP
D. HTPP/WWW

Answer: D

Question 23.
What are two methods that an endpoint can use to determine the address of the gatekeeper?
(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