CompTIA Network+ N10-006 Q33

Which of the following would be used in an IP-based video conferencing deployment? (Select TWO).

A. RS-232
B. 56k modem
C. Bluetooth
D. Codec

Correct Answer: DE
Section: Network architecture

The term “codec” is a concatenation of “encoder” and “decoder”. In video conferencing, a codec is software (or can be hardware) that compresses (encodes) raw video data before it is transmitted over the network. A codec on the receiving video conferencing device will then decompress (decode) the video signal for display on the conferencing display.
The Session Initiation Protocol (SIP) is a protocol for initiating an interactive user session that involves multimedia elements such as voice, chat, gaming, or in this case video.