Chapter 3: Storage devices and media (Part 1):

1.

Multiple Select

20 sec

1 pt

Identify the importance of secondary storage such as Hard Disk Drive:

Safeguard against lost of data due and Backup

Safeguard against copyright

Safeguard against having computer components going bad or malfunction

Safeguard against damage caused by hackers

2.

Multiple Select

30 sec

1 pt

Two types of storage medium:

Fixed: installed internally

removable

Optical Storage

Laser reading base Storage

3.

Multiple Select

30 sec

1 pt

Two method of accessing data used by storage medium:

Serial (sequential Access)

Queue (First in First out access)

Top down access (Structured access)

Direct (Random Access)

4.

Multiple Select

30 sec

1 pt

Two characteristics of Serial (Sequential access):

Files are stored one by one in a sequence

Stores files so that they can instantly be accessed

Must search through the files one by one until you get to the one you want.

Direct Access of data using search indexing

5.

Multiple Select

30 sec

1 pt

Two characteristics of Direct (Random access):

Stores files so that they can instantly be accessed

No need to search through files to get to the one you want

Files are stored one by one in a sequence

Data are to be stored alphabetically and sorted in order

6.

Multiple Select

30 sec

1 pt

Two Examples of Serial (sequential Access) Method:

Magnetic Tape

Flash drive

Cassette Tape

CD ROM

7.

Multiple Select

30 sec

1 pt

Two Examples of Direct (Random Access) Method:

Magnetic Tape

Flash drive

VHS Tape

External Hard drive

8.

Multiple Select

30 sec

1 pt

Two Examples of Magnetic Storage Media

internal hard disk drive

Flash drive

DVD ROM

Portable hard disk drives

9.

Multiple Select

30 sec

1 pt

Two Examples of Optical Storage Media

Blu-ray

Flash drive

DVD ROM

SSD

10.

Multiple Select

30 sec

1 pt

Difference between Main Memory Storage vs Secondary/Backing Storage (Q1):

Secondary: Usually used to store data while it is being processed by the CPU.

Main Memory: Data's are hold permanently

Secondary: Temporary holding data

Main Memory: Usually used to store application software, operating system software, files etc.

11.

Multiple Select

30 sec

1 pt

Difference between Main Memory Storage vs Secondary/Backing Storage (Q2):

Secondary: Data will be lost when computer is turned off

Main Memory: Volatile

Secondary: Non-Volatile

Secondary Memory: Included RAM and ROM

12.

Multiple Select

30 sec

1 pt

Two advantages of Hard Disk Drive (Magnetic Storage Media):

Very fast data transfer rate and fast access times to data

No Moving parts so last long

Faster than SSD

Large storage capacity

13.

Multiple Select

30 sec

1 pt

Two disadvantages of Internal hard disk drive:

More expensive than SSD

Data transfer rate/data access time is slower than Optical Disks

Can be easily damaged without correct shut down procedure

Have many moving parts

14.

Multiple Choice

30 sec

1 pt

One main advantage of Portable hard disk drive compared to internal hard disk:

More stronger and durable compared to internal HDD

easy to move and transfer data/files from one desktop system to another

is Cheaper than internal HDD

Where Operating system is stored and is essential part of desktop computers

15.

Multiple Choice

30 sec

1 pt

One best use of Magnetic Tapes:

Used by large organization for long term archiving data

This device connects to the computer using the USB Port.

Main backing storage device used by all computers to store

Used mostly for Audio data

16.

Multiple Select

30 sec

1 pt

Two disadvantages of Magnetic Tapes

Very slow data access times

Can be easily damaged if dropped

Have many moving parts like HDD

Affected by magnetic field

17.

Multiple Choice

30 sec

1 pt

How data is read by CD ROM:

Has moving header to read the data

is read by bouncing the laser beam off the surface off the medium.

data is read directly from Microchip

Uses light and pin to read the data

18.

Multiple Select

30 sec

1 pt

Two advantages of CD-ROM

Hold more data than floppy disks.

More durable and last longer than thumbdrive

Compatible with audio systems.

19.

Multiple Select

30 sec

1 pt

Two disadvantages of CD ROM

Data transfer rate is slower compared to other storage medium

Not Robust - easily be damaged or scratched.

Have many moving parts like HDD

Not portable

20.

Multiple Select

30 sec

1 pt

Two differences between CD ROM and DVD ROM

Hold more data than CD-ROM's

CD ROM is used for video recording only

Can record Videos in DVD with higher resolutions.

CD holds 4.7 GB of data

21.

Multiple Choice

30 sec

1 pt

One disadvantage of DVD ROM is:

Requires special software to run

Have to buy a separate DVD player

it is used only to record videos

is more expensive the thumbdrives

22.

Multiple Select

30 sec

1 pt

Two differences between CD-R/DVD-R and CD-RW/DVD-RW

CD-R/DVD-R are only record-able once and are used for Read Data only

CD-R/DVD-R holds more better quality videos and imaged

CD-RW and DVD-RW allows for data to be written, erased and rewritten many times

CD-RW and DVD-RW are cheaper than CD-R/DVD-R

23.

Multiple Select

30 sec

1 pt

Two main features of DVD-RAM

Use number of concentric tracks

Once data is been recorded and the process has been finalised then the disks become Read Only.

Storage size is smaller then CD-ROM

Allows simultaneous read /write and great longevity

24.

Multiple Choice

30 sec

1 pt

One Major disadvantage of DVD RAM is:

Requires special and expensive software to run

Not as compatible as R or RW format

it is used only to record videos

is affected by the cool weather

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