CCDA 640-864 Q&As – Voice and Video Design (16-20)

June 17, 2013

Which H.323 protocol is in charge of call setup and signaling?

A.    RTCP
B.    H.245
C.    G.711
D.    H.225

Answer: D

For the following options, which International Telecommunication Union (ITU) standard provides a framework for multimedia protocols for the transport of voice, video, and data over packet- switched networks?

A.    Weighted fair queuing (WFQ)
B.    H.323
C.    Voice over IP (VoIP)
D.    Session Initiation Protocol (SIP)

Answer: B

Which feature will not transfer packets when there is silence?

A.    Ear and mouth (E&M)
B.    Voice Activity Detection (VAD)
C.    Digital Silence Suppressor (DSS)
D.    Dial peers

Answer: B

Which three of these are components of the North American Numbering Plan? (Choose three.)

A.    Numbering Plan Area
B.    country code
C.    prefix
D.    zone
E.    line number
F.    trunk channel

Answer: ACE
NANP has the address format of NXX-NXX-XXXX, where N is any number from 2 to 9 and X is any number from 0 to 9. The rst three digits identify the numbering plan area and are commonly called the area code. The address is further divided into the office code (also known as prefix) and line number. The prefix is three digits, and the line number is four digits. The line number identifies the phone.

When monitoring voice traffic on a converged network, which are the three most important QoS characteristics to pay attention to? (Choose three.)

A.    delay
B.    jitter
C.    packet loss
D.    bit error rate
E.    CRTP hop configuration

Answer: ABC

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