Pearson 1CP2 - 3.1 - Secondary Storage

Front

What quality of main memory means it will lose all of its data when the power is turned off? Options: Permanent, Volatile, Nonvolatile, Persistent

Back

Volatile

Front

What component do computer systems need to ensure all data and programs are retained long term due to the volatility of main memory?

Back

Secondary storage

Front

Other than volatility, what are two critical differences between main memory and secondary storage?

Back

Access speed, storage capacity

Front

Explain how magnetic storage works.

Back

Magnetic storage works by using magnetic fields to magnetize tiny particles on a disk or tape + is 1 and - is 0

Front

Explain how optical storage media works.

Back

Optical storage media works by using a laser to read and write data on a reflective surface.

Front

Explain how pits and lands help an optical disc to store 1s and 0s.

Back

Optical discs are covered in areas that reflect light (lands) or do not reflect light (pits). A laser is then passed over these and the light (or lack of) is read by a lens as either a 1 or 0.

Front

What type of secondary storage relies on little trapped pools of electrons to each represent a binary number?

Back

Solid State

Front

Which type of secondary storage requires no moving parts? Options: Hard Disk Drive (HDD), USB Flash Drive, CD-ROM, Solid State Drive (SSD)

Back

Solid State Drive (SSD)

Front

CD, DVD and Blu Ray are all examples of...

Back

Optical storage media

Front

SD Card, USB Thumb Drive and SSD are all examples of which type of storage?

Back

Solid-state storage