Computing

Question 1

1Adding binary 0111 and 0011 gives

Hard

A. 0110 B. 1001 C. 1010 D. 1100

Question 2

2Lossy compression

Easy

A. keeps every bit B. only works on text C. permanently removes some data to reduce file size D. increases file size

Question 3

3A sound sampled at 44.1 kHz with 16-bit samples in stereo for 1 minute needs about

Hard

A. 5.3 MB B. 44 MB C. 10.6 MB D. 2.6 MB

Question 4

4In 8-bit two's complement, how is −1 written?

Hard

A. 10000001 B. 00000001 C. 11111110 D. 11111111

Question 5

51 kibibyte equals

Hard

A. 1000 bytes B. 1024 bits C. 8 bits D. 1024 bytes

Question 6

6Add the binary numbers 1011 and 0110.

Medium

A. 11001 B. 10001 C. 1101 D. 10101

Question 7

7How many bits make up one byte?

Easy

A. 8 B. 4 C. 2 D. 16

Question 8

8Convert 2F (hexadecimal) to decimal.

Hard

A. 45 B. 47 C. 32 D. 215

Question 9

9Convert decimal 200 to hexadecimal.

Medium

A. C2 B. C8 C. 8C D. B8

Question 10

10A sound file sampled at 44,100 Hz with 16 bits for 10 s (mono) is

Hard

A. 44,100 bytes B. 7,056,000 bytes C. 882,000 bytes D. 441,000 bytes