Secondary Storage & Performance Factors

Storage devices that are written to and read from using a laser are known as

Match these examples of storage devices to their type

Groups:

(a) Magnetic

,

(b) Solid State

,

(c) Optical

• Hard Disk Drive

• Flash Memory Stick

• DVD

• CD

• Solid State Hard Drive

• BluRay

Many newer computers have Solid State Drives (SSD) instead of magnetic Hard Disk Drives (HDD),

Identify two benefits of doing this

• Faster read / write speed.

• Cheaper Cost

• Larger Capacity

• More reliable

Optical storage is very ​ (a)   compared to other types, however, is extremely ​ (b)   .

• slow
• portable
• fast
• reliable
• expensive

Match these CPU performance factors with their definitions.

• Cores

• Super fast memory used to store frequently used instructions.

• Cache

• Individual processors inside the CPU each able to carry out instructions in parallel.

• Clock Speed

• A measure of the number of cycles a processor can carry out each second.

Both optical and ​ (a)   storage devices contain moving parts, which makes them ​ (b)   than ​ (c)   storage devices.

• magnetic
• solid state
• slower
• faster
• better
• more reliable
• more expensive

Match these storage devices with a typical capacity.

• 700 MB

• CD

• ~1 TB

• Magnetic Hard Disk Drive

• 25 GB

• Solid State Drive

• ~256 GB

• BluRay

Put these storage devices into order from the slowest read / write speed, on the left, to the fastest on the right.

• Magnetic Hard Drive

• Solid State Drive

• CD

• USB Memory Stick

A school wishes to make a back-up of all the files created by staff and pupils.

Which type of storage would be best suited for this?

• Optical

• Magnetic

• Solid State

A CPU with multiple cores is able to carry out instructions in ________.