Assessment CH 1,2,3

What is the binary number system?

• A numeral system that uses only two symbols, typically 0 and 1

• A numeral system that uses only two symbols, typically 0 and 9

• A numeral system that uses only two symbols, typically 1 and 2

• A numeral system that uses only two symbols, typically 0 and 2

What are hexadecimal numbers?

• Base-16 numeral system representations that use the digits 0-9 and the letters A-F

• Base-10 numeral system representations that use the digits 0-9

• Base-8 numeral system representations that use the digits 0-7

• Base-2 numeral system representations that use the digits 0 and 1

Where are hexadecimal numbers commonly used?

• Memory addressing and representing binary data more compactly

• Performing calculations and executing instructions

• Temporary data storage and retrieval

• Long-term data storage and retrieval

How is addition and subtraction performed in binary?

• 1 + 1 equals 10

• 1 + 1 equals 11

• 1 + 0 equals 1

• 0 + 0 equals 0

What is an example of binary arithmetic?

• 1101 + 101 equals 10010

• 1010 + 1111 equals 10001

• 10010 - 101 equals 1101

• 1111 - 101 equals 1010

What is the purpose of ASCII and Unicode?

• Character encoding standards used to represent text in computers

• Interconnected systems of computers and other devices that can communicate and share resources

• Specialized computer systems designed to perform specific tasks within a larger system

• Numeral systems that use only two symbols, typically 0 and 1

What is the difference between ASCII and Unicode?

• ASCII uses 7 bits to represent characters, while Unicode uses 16 bits

• ASCII uses 16 bits to represent characters, while Unicode uses 7 bits

• ASCII uses 8 bits to represent characters, while Unicode uses 16 bits

• ASCII uses 16 bits to represent characters, while Unicode uses 8 bits

Why is data compression important in computer systems?

• It reduces the size of data, making it easier to store and transmit

• It improves communication and efficient data transfer

• It performs calculations and executes instructions

• It provides high-speed storage for frequently used data

What are examples of compression techniques?

• Run-length encoding and Huffman coding

• Twisted pair cables and fiber optic cables

• Routers and switches

• Monitors and printers

What are computer networks?

• Interconnected systems of computers and other devices that can communicate and share resources

• Specialized computer systems designed to perform specific tasks within a larger system

• Numeral systems that use only two symbols, typically 0 and 1

• Character encoding standards used to represent text in computers