1.3 Storage

Which of these are reasons for computer systems requiring secondary storage? (Tick all)

• Secondary storage improves system performance

• Used to back up data stored in main memory/primary storage.

• Stores programs/data and other files that would otherwise be lost when the power is switched off/RAM is volatile/cannot store data permanently.

• Need for larger storage capacity (than what RAM and ROM can provide).

• Its required for Virtual Networks

Which of these define what secondary storage is?

• Non-volatile storage / devices that are not directly accessible by the CPU

• Any non-volatile storage

• All memory technologies that use magnetism.

• Any memory technology using laser light

• A USB device

Which of these storage devices make use of magnetism to store data? (Tick All)

• SSD

• HDD

• LTO Tape

• FDD

• DVD

Which of these storage devices make use of optics (laser light) to store data? (Tick All)

• CD

• Fibre Optic Cable

• DVD

• Blue-Ray

• LED

Which of these storage devices make use of logic circuits (NOR or NAND gates ) to store data? (Tick All)

• SSD

• USB

• USB Disk

• SD Memory Card

• Cloud Storage

A File OVERHEAD is additional space needed to store a file on a disk - this is MORE than the data alone by how much?

• 5%`

• 10%

• 15%

• 20%

• 25%

A 24-bit colour image file with dimensions 100 x 100 pixels would require _____ bytes of disk space.

• 10,000

• 11,000

• 240,000

• 33,000

• 264,000

Which of these statements are True? (Tick all)

• SSD disks do not fragment

• Fragmentation on HDD can reduce system performance

• SSDs have a faster transfer speed for large files compared to a HDD

• A SSD would always be the best choice over a HDD

• Defragmenting an SSD extends the life-span of the drive

Besides COST or CAPACITY, which of these are characteristics of storage devices? (Select all)

• speed (data transfer rate)

• Durability

• Portability

• Reliability

• Data Storage Space

Which of these statements explain "durability"?

• Length of time expected for data to last.

• Whether the data will be saved as expected.

• The data is not affected when saved.

• No changes to the file formatting.