Question 1: Name two types of storage devices commonly used to store large amounts of data in a computer system.

Answer: Hard Disk Drive (HDD) and Solid State Drive (SSD).

Question 2: Describe the main difference between volatile and non-volatile storage devices.

Answer: Volatile storage loses data when power is turned off, whereas non-volatile storage retains data even when power is off.

Question 3: List two advantages of using SSDs over traditional HDDs.

Answer: Faster data access speeds and greater durability due to lack of moving parts.

Question 4: Explain what a USB flash drive is and how it is typically used.

Answer: A USB flash drive is a small, portable storage device that uses flash memory to store data. It is commonly used for transferring files between computers and for backup purposes.

Question 5: Complete the truth table for the following logic gate: AND gate. The inputs are A and B, and the output is C.

Answer: [{"A":0,"B":0,"C":0},{"A":0,"B":1,"C":0},{"A":1,"B":0,"C":0},{"A":1,"B":1,"C":1}]

Question 6: Draw a logic circuit for an OR gate with two inputs, A and B. Label the circuit clearly.

Answer: A correct sketch would show the OR gate symbol with two input lines labeled A and B entering the gate, and one output line leaving the gate. The OR gate symbol is a curved shape with a pointed end.

Question 7: Identify and explain two features that distinguish optical discs such as CDs or DVDs from flash memory storage devices.

Answer: Optical discs store data using laser-etched patterns and are read via optical sensors, which makes them slower and more suitable for media playback and distribution. Flash memory devices use electronic memory chips, allowing for faster access and rewritable storage.

Question 8: Sketch a diagram of a typical hard disk drive (HDD). Include the main components such as the platters, read/write head, and actuator arm.

Answer: A correct sketch should show circular platters stacked vertically, with an arm reaching over the platters to the surface where the read/write head is positioned. The actuator arm moves the head across the surface of the platters.

Question 9: What is the purpose of cache memory in a storage system? Explain briefly.

Answer: Cache memory temporarily stores frequently accessed data to speed up data retrieval and improve overall system performance.

Question 10: Draw a simple diagram illustrating how data is transferred from a computer to a USB flash drive. Label each component involved.

Answer: A correct diagram would include a computer with data lines connected to a USB port, which then connects to the USB flash drive. Inside the drive, data flows to the flash memory chip. Labels should identify the computer, USB port, data cable, and flash memory.