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Cisco Voice Over IP Sample Questions:

1. Which three are supervisory signals? (Choose three.)

A) call waiting
B) on hook
C) off hook
D) ring
E) busy

2. You are working with a potential customer that would like to integrate its existing PBX telephone system into its IP network. The accompanying figure shows that the customer has two offices that need to be connected to the IP network so that the customer can exchange telephone calls without using the PSTN. Both PBXs use a proprietary signaling type.
Which signaling type will allow you to support your customer?

A) CAS
B) FXO
C) T-CCS
D) CCS
E) FXS
F) E&M

3. One voice packet is lost between Phone A and Phone B.
What will be the result to the listener?

A) The listener will experience a gap in the received audio stream.
B) The call is terminated.
C) The listener will hear the audio normally. Packet loss concealment will make the loss inaudible.
D) The listener will hear the audio out of order when the lost packet is retransmitted.

4. Site A uses three-digit internal numbers and Site B uses four-digit internal numbers.
All calls to the PSTN are routed through Site B.
What dial plan below best represents provision simplicity?

A) Translate all called numbers at either site to ten digits.
B) Translate all called numbers within Site B to three digits.
C) Translate all called numbers within Site A to four digits.
D) Translate all called numbers leaving Site A to ten digits.

5. What is the E.164 numbering plan?

A) the IETF North American number plan
B) the ITU worldwide number plan
C) a proprietary PBX number plan
D) the European PBX standard telephony number plan

Solutions: