Number Systems - Lesson 1 - Hex, Binary, Decimal, ASCII

What is Binary Code?

• A number system with only 0 & 1

• A number system with 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

• A number system with 0 & 1 & 2

• A number system with only 1 & 2

Answer explanation

Binary Code is a number system that uses only 0 and 1, making it the correct choice among the options provided.

What does ASCII stand for?

• American Standard Code for Internet Access

• Advanced System Code for Information

• All System Code for Internet Access

• American Standard Code for Information Interchange

Answer explanation

The correct choice is 'American Standard Code for Information Interchange' which is the full form of ASCII.

How many unique values are there in ASCII?

• 512

• 256

• 128

• 64

Answer explanation

There are 128 unique values in ASCII, ranging from 0 to 127, which includes control characters, symbols, and alphanumeric characters.

What is the hexadecimal value of 01011010?

• 5A

• 7C

• 6B

• 8D

Answer explanation

The hexadecimal value of 01011010 is 5A. To convert from binary to hexadecimal, group the binary digits into sets of four starting from the right, then convert each group to its hexadecimal equivalent.

How many bits make up a nibble?

• 4 bits

• 2 bits

• 6 bits

• 8 bits

Answer explanation

A nibble is made up of 4 bits, so the correct answer is 4 bits.

What is the purpose of the ASCII Table?

• To convert binary to readable text

• To convert hexadecimal to binary

• To convert binary to hexadecimal

• To convert readable text to binary

Answer explanation

The purpose of the ASCII Table is to convert binary to readable text, making it the correct choice among the options provided.

What is the first step to convert binary to text?

• Review the ASCII table of values

• Multiply and add each value

• Convert to hexadecimal

• Group your byte into 2 nibbles

Answer explanation

Group your byte into 2 nibbles is the first step to convert binary to text.

What is the Von Neumann Model related to?

• Computer Architecture

• Cloud Computing

• Operating Systems

• Computer Networking

Answer explanation

The Von Neumann Model is related to Computer Architecture, which encompasses the design and structure of computer systems.

What does RAM stand for?

• Read and Modify Memory

• Random Access Memory

• Randomly Accessed Memory

• Read-Only Memory

Answer explanation

RAM stands for Random Access Memory, allowing for quick and direct access to any memory location, unlike sequential access in other types of memory.

What is the purpose of the BIOS in a computer?

• Booting the operating system

• Running applications

• Managing files

• Connecting to the internet

Answer explanation

The purpose of the BIOS in a computer is to boot the operating system, not to run applications, manage files, or connect to the internet.