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Cisco Voice Over IP Sample Questions:

1. A 9 digit number must be dialed to reach numbers on the PSTN. What process makes sure that the first digit 9 is not transmitted as part of the called number?

A) digit seizing
B) digit alternating
C) digit masking
D) digit manipulation

2. What is the approximate frequency range of human speech?

A) 20 Hz to 20,000 Hz
B) 600 Hz to 5400 Hz
C) 40 Hz to 15,000 Hz
D) 200 Hz to 9000 Hz

3. A particular set of H.323 endpoints cannot resolve the IP address of destination endpoints.
What is the H.323 approved method to fix this problem?

A) Introduce a gatekeeper on the segment.
B) Choose another signaling protocol.
C) Hard code all IP addresses.
D) Build route tables in gateways on the segment.

4. You have a customer that is interested in determining the number of VoIP calls their Frame Relay WAN links can support. Each of their Frame Relay WAN links has 84 kbps of bandwidth available outside all other applications and overhead. How many G.729 calls using the 8 kbps codec and 20 byte sample size can be supported?

A) 3
B) 4
C) 1
D) 2

5. Refer to the exhibit. You have been asked to configure a dial peer on R2 that will match only the extensions of the four telephones attached. Which dial-peer statement will you use?

A) dial-peer voice 1 pots destination-pattern 5552.[0-5]0
B) dial-peer voice 1 pots destination pattern 5552[5-6].0
C) dial-peer voice 1 pots destination-pattern 5552[5-6][05]0
D) dial-peer voice 1 pots destination-pattern 555[2-5][56]

Solutions: