IT Support Fundamentals

Which of these is a valid byte?

• 10011011

• 0111110

• 11001020

• 1010

How many possible values can we have with 8 bits?

• 127

• 256

• 8

• 255

Why did UTF-8 replace the ASCII character-encoding standard?

• ASCII can store a character in more than one byte

• UTF-8 only uses 128 values

• UTF-8 can store a character in more than one byte

• ASCII can represent emoji

What is the highest decimal value we can represent with a byte?

• 256

• 255

• Any number

• 2

The binary value of the ASCII letter "c" is 0111 1011.

• 100

• 99

• 45

• 123

What are the four layers of the computer architecture?

• Binary, Hardware, OS, Software

• Hardware, Software, Windows, User

• Hardware, Software, OS, User

• Computer, OS, Software, User

What is decimal 31 in binary?

What is decimal 112 in binary?

Where does the CPU store its computations?

• Processors

• Transistors

• Binary

• Registers

What characteristics distinguish a Solid State Drive from a Hard Disk Drive? Check all that apply.

• Uses disk platters

• High RPMs

• Non-moving parts

• Smaller form factor