Understanding Digital Signals and Binary

What is the main difference between analog and digital signals?

• Both analog and digital signals are continuous.

• Both analog and digital signals are discrete.

• Analog signals are discrete, while digital signals are continuous.

• Analog signals are continuous, while digital signals are discrete.

In digital systems, what does a 'bit' represent?

• A continuous wave

• A single character

• An on or off signal

• A group of eight signals

How many bits are in a byte?

• 4

• 32

• 8

• 16

What is the base 10 equivalent of the binary number 1010?

• 10

• 5

• 15

• 20

Which of the following is NOT a characteristic of hexadecimal numbers?

• They use digits 0-9 and letters A-F.

• They are used in computing.

• They are a base 16 system.

• They have a tens column.

What is the binary representation of the decimal number 4?

• 0100

• 1000

• 0010

• 1100

If a number is one less than a power of two, what is its binary representation?

• Alternating ones and zeros

• All ones

• All zeros

• Alternating zeros and ones

What does ASCII stand for?

• Advanced Standard Code for Information Interchange

• Advanced System Code for Internet Interchange

• American System Code for Internet Interchange

• American Standard Code for Information Interchange

What is the primary function of ASCII in computing?

• To translate binary data to text

• To compress data

• To convert text to binary

• To encrypt data

Which of the following is true about ASCII?

• It is used for encrypting data.

• It is a method for compressing data.

• It is a system for converting hexadecimal to binary.

• It is a code for translating binary to text.