Chapter 3,4,5

Question 1

What are the CPU’S key elements?

Answer 1

Arithmetic Logic Unit (ALU) makes mathematical calculations.
The Control Unit accesses program instructions and decodes them.
Registers temporarily hold program instructions.

Question 2

What is the function of Main Memory/ Primary Storage?

Answer 2

It provides the data and instructions to the CPU.

Question 3

What is Secondary Storage?

Answer 3

It is non-volatile and has greater capacity and greater economic storage.

Question 4

Name The Types of Secondary Storage Devices.

Answer 4

Magnetic Tape, Magnetic Disk, Redundancy Array of Independent disks, Virtual Tape, CDs and DVDs, Holographic Disks, and Memory Cards.

Question 5

What is the relational database?

Answer 5

A series of tables stored together to achieve a consistent and controlled pool of data.

Question 6

What is a Primary Key?

Answer 6

It is a field that is unique for each entity.