johnrclark12
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johnrclark12
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Comp. Science Illuminated Ch 1-3

Comp. Science Illuminated Ch 1-3

Question 1 of 20

1

A vacuum tube was a device used in the first generation of computers to link computers together into a network.

Select one of the following:

  • True
  • False

Explanation

Question 2 of 20

1

The base of a number system determines the number of digit positions that can be used for any number in the system.

Select one of the following:

  • True
  • False

Explanation

Question 3 of 20

1

What is the name of a solid piece of silicon that contains transistors, other components, and their connections?

Select one of the following:

  • integrated circuit

  • motherboard

  • workstation

  • magnetic disk

  • server

Explanation

Question 4 of 20

1

How many digits are there in the binary number system?

Select one of the following:

  • 7

  • 1

  • 9

  • 2

  • 8

Explanation

Question 5 of 20

1

True or False? A high-level language is more English-like than assembly language.

Select one of the following:

  • True
  • False

Explanation

Question 6 of 20

1

True or False? Binary numbers can be converted to octal, but not to hexadecimal.

Select one of the following:

  • True
  • False

Explanation

Question 7 of 20

1

Which language is built into the electrical circuitry of a computer?

Select one of the following:

  • compiled language

  • assembly language

  • interpreted language

  • machine language

  • high-level language

Explanation

Question 8 of 20

1

What is the decimal value of the largest digit in the hexadecimal number system?

Select one of the following:

  • 9

  • 0

  • 10

  • 15

  • 16

Explanation

Question 9 of 20

1

Two hexadecimal digits can be stored in one byte.

Select one of the following:

  • True
  • False

Explanation

Question 10 of 20

1

A mercury thermometer is a digital device.

Select one of the following:

  • True
  • False

Explanation

Question 11 of 20

1

In base 16, the digit D is used to represent the decimal value

Select one of the following:

  • 13

  • 15

  • 12

  • 10

Explanation

Question 12 of 20

1

How many things can be represented using three bits?

Select one of the following:

  • 3

  • 6

  • 8

  • 4

  • 12

Explanation

Question 13 of 20

1

Electronic signals are easier to manage if they transfer only binary data.

Select one of the following:

  • True
  • False

Explanation

Question 14 of 20

1

In a signed-magnitude representation of numbers there are two representations of zero.

Select one of the following:

  • True
  • False

Explanation

Question 15 of 20

1

In general, how many things can be represented by n bits?

Select one of the following:

  • n^2

  • 2n

  • 2n + 1

  • 2^n

  • n^4

Explanation

Question 16 of 20

1

Which technique for representing numeric data uses the mantissa to hold the significant digits of a value?

Select one of the following:

  • scientific notation

  • ten's complement

  • floating point

  • fixed-sized numbers

  • signed-magnitude

Explanation

Question 17 of 20

1

Audio data is often represented on a computer by sampling the continuous signal that represents a sound wave.

Select one of the following:

  • True
  • False

Explanation

Question 18 of 20

1

Run-length encoding replaces common words with shorter symbols.

Select one of the following:

  • True
  • False

Explanation

Question 19 of 20

1

Which of the following is true about representing color as an RGB value?

Select one of the following:

  • it is composed of four separate numbers

  • it cannot represent the color white

  • it cannot represent the color black

  • it mimics the way color is perceived by the human eye

  • it cannot represent transparency

Explanation

Question 20 of 20

1

Which text compression technique uses variable-length binary strings to represent characters, assigning frequently used characters short codes?

Select one of the following:

  • Huffman encoding

  • ASCII encoding

  • run-length encoding

  • keyword encoding

  • character set encoding

Explanation

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