Question 1: Name two types of storage devices commonly used in computers today.

Answer: Hard disk drive (HDD) and solid-state drive (SSD).

Question 2: Describe the main difference between primary storage and secondary storage.

Answer: Primary storage (like RAM) is temporary and directly accessible by the CPU, while secondary storage (like a hard drive) is permanent and used to store data when the computer is turned off.

Question 3: A flash drive is an example of which type of storage device? Explain why.

Answer: A flash drive is an example of secondary storage because it stores data permanently even when not connected to a power source.

Question 4: Complete the following truth table for the AND logic gate:

Answer: Inputs: A, B; Output: Q A=0, B=0, Q=0 A=0, B=1, Q=0 A=1, B=0, Q=0 A=1, B=1, Q=1

Question 5: Complete the following truth table for the OR logic gate:

Answer: Inputs: A, B; Output: Q A=0, B=0, Q=0 A=0, B=1, Q=1 A=1, B=0, Q=1 A=1, B=1, Q=1

Question 6: Sketch a logic circuit that uses two AND gates and one OR gate to produce a specific output. Label all inputs and gates clearly.

Answer: A correct sketch would show two inputs connected to two AND gates, with their outputs connected to an OR gate, which produces the final output. All gates and inputs should be labeled appropriately.

Question 7: Explain why solid-state drives (SSDs) are generally faster than traditional hard disk drives (HDDs).

Answer: SSDs are faster because they use flash memory with no moving parts, allowing quicker data access compared to HDDs which use spinning disks and mechanical parts.

Question 8: Describe one advantage and one disadvantage of using cloud storage as opposed to physical storage devices.

Answer: Advantage: Data can be accessed from anywhere with an internet connection. Disadvantage: Requires an internet connection and can raise privacy concerns.

Question 9: Sketch a simple diagram of a computer's main storage hierarchy, including cache, RAM, and hard drive. Leave space for your drawing.

Answer: A correct sketch would show three layers: cache at the top (fastest), RAM in the middle, and hard drive at the bottom (slowest). Each layer should be labeled clearly.

Question 10: What is the primary purpose of secondary storage in a computer system?

Answer: To store data permanently, such as files and programs, even when the computer is turned off.

Question 11: Identify the type of storage device described: 'A small, portable device used to transfer files between computers, often using USB.'

Answer: Flash drive or USB drive.