Unit 1 data compression

Unit 1 data compression

9th Grade

8 Qs

quiz-placeholder

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Unit 1 data compression

Unit 1 data compression

Assessment

Quiz

Information Technology (IT)

9th Grade

Practice Problem

Medium

Created by

Thomas Bui

Used 2+ times

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8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A single ASCII character, such as a the letter 'A', uses how much memory to represent a single character?

1 KiB

7 bits

7 bytes

1 bit

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The letter 'A' in ASCII is represented using the code 6510. Which code represents the letter 'G'?

6810

6910

7010

7110

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The digit '0' is represented in ASCII by the code 4810. How is the text '13' represented in ASCII?

001100012 001100112

001100012 001100012

001100012 001100112

001000012 001000012

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An image has a resolution of 8 pixels in width, and 8 pixels in height. The color depth is 8 bits. How large is this image in bytes?

256 bytes

64 bytes

512 bytes

32 bytes

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Audio is sampled at a rate of 10 Hz, and with a sampling resolution of 8 bits. If the resulting file size is 240 bits, what is the duration of the sampled audio?

3/8 seconds

10 seconds

19200 seconds

3 seconds

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Run-Length Encoding (RLE) is a lossy compression algorithm.

True
False

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

When audio is sampled, the number of bits used to represent the amplitude of the audio signal is called the

duration

sampling resolution

sampling rate

pixel

8.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Lossy compression will result in permanent loss of data.

True
False