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CCNA Voice - 3
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CCNA Voice - 3
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25 Questions

1. VAD detects a drop-off of speech ___ - it waits a fixed amount of time before it stops putting speech frames in packets. This fixed amount of time is known as __ ( when the person stops talking)

2. If a packet is lost What is replayed? packet loss is common in data networks but not in __

3. On a voip link What is the max packet loss

4. The difference between when the packet is expected and when it is actually received is __. - exists only in __ ___ networks

5. The jitter buffer found within Cisco IOS ___ is considered a __ queue. This queue can grow or shrink exponentially depending on the interarrival time of the __ packets.

6. How do you fix queuing delay - you would add

7. RTP consists of a __ __ and a control part the called __

8. __ is a __test given to listeners. The listeners give each sample of speech material a rating of __ (bad) to __ (excellent)

9. Time of day of highest calls on circuit focus those on the __

10. Proxy server is not required in an __ based system

11. __ the 64 Kbps __ voice coding technique - This is used for the digital voice delivery in the __ or __

12. __ recommends no more than __ms delay one-way transmission

13. __ is an _ measurement of voice quality and the __ measures the voice

14. VAD problems in determining when speech __ and __ - and in distinguishing speech from __ __. Its also known as __ __ __ __

15. You hear your own voice in the background ( 4wire)

16. What are 3 things you can do if they want to implement a corporate dial plan

17. In an unmanaged - congested network - ___delay can add up to two seconds of delay (or result in the packet being dropped). This lengthy period of delay is___ in almost any voice network. delay)

18. The problem with VAD is detecting when speech __. This is known as__ Usually - the person listening to the speech does not notice this cut off because it did not record and transmit any codec.

19. How many times can a digital to analog conversion in my network and PSTN total network happen - __ speech is less robust conversion

20. It has a large header of __ bytes - Size of headers IP/RTP/UDP

21. What do you use to compress RTP header to 2 or 4 bytes

22. ___describes CELP compression that enables __ to be coded into _ Kbps streams;

23. RTCP provides support for real-time conferencing of __ of any size within an Internet - does not send __ - offers __and supports __ media streams

24. __ Describes a compression technique that you can use to compress ___or other __ signal components of multimedia service at a low bit rate - MP-MLQ provides greater quality at __ Kbps - CELP provides flexibility at __Kbps

25. __ builds in some reliability to the connectionless __ protocol - enables reliability with out using the overhead of __ - what protocol send multiples of the same packet __

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