Computer Systems - Lesson 6 - Hexadecimal Number System

What is the base of the hexadecimal number system?

• Base 8

• Base 10

• Base 16

• Base 2

Answer explanation

The base of the hexadecimal number system is Base 16, where each digit can represent values from 0 to 15, making it a base-16 system.

Which digits are used in hexadecimal numbers after 9?

• 1-6

• 11-16

• A-F

• 10-15

Answer explanation

Hexadecimal numbers use digits 0-9 and letters A-F, representing values 10-15. Therefore, the correct digits used in hexadecimal numbers after 9 are A-F.

What is the purpose of hex codes in HTML, CSS, and SVG?

• Defining layouts

• Styling text

• Identifying colors

• Creating animations

Answer explanation

Hex codes in HTML, CSS, and SVG are primarily used for identifying colors, allowing developers to specify precise colors using a hexadecimal format.

Can colors and color combinations be trademarked?

• No

• Yes, only colors

• Yes, only color combinations

• Yes, both colors and color combinations

Answer explanation

Colors and color combinations can be trademarked, so the correct choice is 'Yes, both colors and color combinations'.

What is the significance of converting Hex to ASCII?

• Identifying characters

• Styling text

• Coloring initials

• Creating animations

Answer explanation

Converting Hex to ASCII is significant for coloring initials as it allows for the representation of characters in a readable format.

What is the maximum value that can be represented by a single hexadecimal digit?

• 9

• 15

• F

• 16

Answer explanation

The maximum value that can be represented by a single hexadecimal digit is 15, which corresponds to the decimal value of 15. Hexadecimal digits range from 0 to F, where F represents 15 in decimal.

How many bits are required to represent one hexadecimal digit?

• 4 bits

• 8 bits

• 16 bits

• 32 bits

Answer explanation

One hexadecimal digit can be represented using 4 bits because each hexadecimal digit corresponds to a 4-bit binary number (2^4 = 16 possible values).

What is the equivalent decimal value of the hexadecimal number 'A'?

• 10

• 11

• 12

• 13

Answer explanation

The hexadecimal number 'A' is equivalent to the decimal value of 10. In hexadecimal, 'A' represents the decimal value of 10.