16 questions for CCNA Voice 640-460

Description

I found them on the internet :


1) Which of the following is selected first for an incoming dial peer?

A) Answer-address
B) incoming called-number
C) destination-pattern
D) pots port
E) dial-peer 0

2) What is required to convert a G711ulaw call to G729?

A) Voice Termination resources
B) Conferencing resources
C) Converter resources
D) Transcoding resources
E) Gateway resources
F) Gatekeeper resources

3) What is the maximum number of phones are supported on Call Manager Express?

A) 48
B) 28
C) 240
D) 500
E) 30000
F) 4

4) What protocol needs to be enabled on an ATA if a fax machine is connected to the ATA?

A) MGCP
B) SCCP
C) H323
D) SIP
E) QSIG
F) Q931

What protocol needs to be enabled on an ATA if an analog telephone is connected to the ATA?

A) MGCP
B) SCCP
C) H323
D) SIP
E) QSIG
F) Q931




Answers:

1)B - incoming called-number is the first choice when matching incoming dial-peers

2)D - Transcoding resources are required to convert G711ulaw to G729

3)C - the maximum number of phones supported on CME is 240 on a 3845 Cisco router (this has changed recently to 250, but the CCNA Voice course still sets this value at 240)

4)C - H323 needs to be enabled on the ATA if a fax machine is connected to the ATA.

5)B - SCCP needs to be enabled on the ATA if an analog telephone is connected to the ATA.





What are the three VTP modes on Cisco switches?
A) Master
B) Client
C) Backup
D) Server
E) Transparent
F) Primary






Answer:
B, D, E - The three VTP modes are: client, server and transparent



Which of the following is selected first for an incoming dial peer?
A) Answer-address
B) incoming called-number
C) destination-pattern
D) pots port
E) dial-peer 0




Answer:
B - incoming called-number is the first choice when matching incoming dial-peers



What is the default VTP mode on Cisco switches?
A) Master
B) Client
C) Backup
D) Server
E) Transparent
F) Primary





Answer:
D - The default VTP mode is server



An analog telephone is connected to a _______ port on a router?

A) FXO
B) E1
C) T1
D) FXS
E) E&M
F) CAS
G) CCS





Answer:
D - Analog devices are connected to FXS ports on Cisco routers.



What is required to convert a G711ulaw call to G729?
A) Voice Termination resources
B) Conferencing resources
C) Converter resources
D) Transcoding resources
E) Gateway resources
F) Gatekeeper resources





Answer:
D - Transcoding resources are required to convert G711ulaw to G729.



What is the maximum number of phones are supported on Call Manager Express?
A) 48
B) 28
C) 240
D) 500
E) 30000
F) 4




Answer:
C - the maximum number of phones supported on CME is 240 on a 3845 Cisco router (this has changed recently to 250, but the CCNA Voice course still sets this value at 240)



What protocol needs to be enabled on an ATA if a fax machine is connected to the ATA?
A) MGCP
B) SCCP
C) H323
D) SIP
E) QSIG
F) Q931





Answer:

C - H323 needs to be enabled on the ATA if a fax machine is connected to the ATA.


What protocol needs to be enabled on an ATA if an analog telephone is connected to the ATA?
A) MGCP
B) SCCP
C) H323
D) SIP
E) QSIG
F) Q931





Answer:

B - SCCP needs to be enabled on the ATA if an analog telephone is connected to the ATA.

What device enables Call Admission Control in a CME environment?

A) Gateway
B) Transcoder
C) Bridge
D) Gatekeeper
E) Dial peers
F) Endpoint






Answer:

D - A Gatekeeper is used for Call Admission Control in a CME environment when using H323.


Which protocol provides VoiP packet sequence numbering?

A) IP
B) TCP
C) UDP
D) RTP
E) RTCP
F) G711






Answer:

D - RTP provides sequence numbering for VoIP packets

Which codec is less processor intensive?
A) G729
B) G729a






Answer:
B - G729a is less processor intensive than g729

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