Question

What is the bit rate for high-definition TV (HDTV)?

(a) 1.4 Gbps

(b) 2 Gbps

(c) 1.5 Gbps

(d) 1.8 Gbps

The question was posed to me in an international level competition.

I'd like to ask this question from Layers in division Cryptography Overview, TCP/IP and Communication Networks of Cryptograph & Network Security

Answer 1

Correct choice is (c) 1.5 Gbps

Explanation: The HDTV screen is normally a ratio of 16: 9 (in contrast to 4: 3 for regular TV)

There are 1920 by 1080 pixels per screen, and

Screen is renewed 30 times per second.

24-bits represent one color pixel.

Therefore Bit Rate = 1920 × 1080 × 30 × 24 = 1,492992,000 = 1.5 Gbps.