Computer Science Term 2 review

Convert denary 123 to binary:

• 1111011

• 1110111

• 1101111

• 1011111

Convert Hex C2 to binary:

• 11000010

• 11000100

• 10000110

• 10100010

What is the largest Decimal number you can create with 8 bits? (the number 0 is included)

• 256

• 255

• 254

• 253

Identify the type of compression best suited for storing a high-resolution medical scan:

• Lossless

• Lossy

What does the one's complement method involve?

• Flipping all the bits

• Adding one to each bit

• Subtracting one from each bit

• None of the above

What is the first step in the fetch-decode-execute cycle?

• The CPU performs an arithmetic operation

• The CPU retrieves the next instruction from memory

• The CPU decodes the retrieved instruction

• The CPU executes the command

Which factor does not directly contribute to overall CPU performance?

• The size of the hard drive

• The frequency in GHz

• The number of cores

• The size of the CPU cache

Which of the following is an example of both an input and output device?

• Keyboard

• Touchscreen

• Monitor

• Mouse

How does increasing the number of CPU cores affect a computer's performance?

• Decreases energy consumption

• Reduces the computer's multitasking ability

• Improves the ability to perform multiple tasks simultaneously

• None of the above

What is the main purpose of the address section in a data packet?

• To verify data integrity

• To indicate the end of the message

• To specify the destination of the data

• To store the actual data being sent