CBT CBT Digital Broadcasting Standards 2

Question 1

In digital video, what does 4:2:2 chroma subsampling mean?

Accepted Answer

Full luma, half horizontal chroma resolution, full vertical chroma

Answer

4:2:2 subsampling retains full horizontal and vertical luma resolution while halving horizontal chroma resolution, commonly used in professional broadcast.

Question 2

What frame rate and scan format is designated as 1080i/59.94 in broadcast production?

Accepted Answer

1080 lines, interlaced, 59.94 fields per second

Answer

1080i/59.94 means 1080 interlaced lines delivered at 59.94 fields per second (equivalent to 29.97 complete frames per second).

Question 3

What is the purpose of a PSIP (Program and System Information Protocol) in ATSC broadcasting?

Accepted Answer

To provide channel guide, time, and virtual channel data to receivers

Answer

PSIP provides receivers with virtual channel numbers, program guide data, rating information, and timing synchronization for ATSC broadcasts.

Question 4

Which color space standard is used for standard-definition digital television in the US?

Accepted Answer

BT.601

Answer

ITU-R BT.601 defines the color matrix, sampling rates, and color primaries for standard-definition digital television.

Question 5

What is the primary advantage of HEVC (H.265) over AVC (H.264) for broadcast applications?

Accepted Answer

Approximately 50% better compression efficiency at equivalent quality

Answer

HEVC achieves approximately 50% better compression efficiency than AVC at the same perceptual quality level, enabling 4K at practical broadcast bitrates.

(CBT) Certified Broadcast Technologist Practice Test

(CBT) Certified Broadcast Technologist Practice Test

CBT CBT Digital Broadcasting Standards 2