Chapter 6

What is the most common interface used to connect a hard disk to a computer?

• USB

• SATA

• Thunderbolt

• HDMI

Which of the following is a measure of the hard disk's storage capacity?

• RPM

• Cache size

• Seek time

• Gigabytes (GB) or Terabytes (TB)

1. Which of the following factors can impact the seek time of a hard disk?

• 1. Platter density

• 1. RPM

• 1. Cache size

• 1. All of the above

Which of the following is a disadvantage of using a solid-state drive (SSD) compared to a traditional hard disk?

• Higher power consumption

• Slower data transfer rates

• Limited lifespan due to mechanical components

• Higher susceptibility to physical shocks

What is the purpose of the spindle motor in a hard disk?

• It controls the position of the actuator arm

• It stores frequently accessed data for faster retrieval.

• It spins the platters at a constant speed.

• It reads and writes data from and to the platters.

In the context of a hard disk, what is a cylinder?

• A circular platter where data is stored.

• A group of tracks on different platters with the same radial position.

• The area where the actuator arm moves to access data.

• A component that controls the rotational speed of the platters.

RAID 0 is primarily known for:

• Data striping across multiple disks for improved performance.

• Data mirroring for enhanced data redundancy.

• Parity calculation for fault tolerance.

• Hot-swapping drives for seamless replacement.

Which RAID level requires a minimum of three disks to implement?

• RAID 0

• RAID 1

• RAID 5

• RAID 10

What is the purpose of sector sparing in a hard disk?

• To improve data transfer rates between sectors.

• To allocate spare sectors for data recovery in case of sector failures.

• To organize sectors into logical groups for easier data access.

• To distribute data evenly across all sectors for better performance.

There are 4 hard disks in a computer that configure RAID 5. How much logical disk capacity is used? Assume that each HDD is 1TB

• 2TB

• 3TB

• 4TB

• 5TB