Computer System - Data Capturing & Storage

To process Data from environment, it needs to be _______ first followed by _________

• Captured, Stored

• Output, Input

• Captured, Loaded

• Input, Output

Data capturing can be done by using

• a keyboard

• a bar code reader

• remote sensors on earth orbiting satellites

• All of the above

Heterogeneity among data sources makes data capturing

a complex task.

• True

• False

Data storage is a challenging task because (Select all that apply)

• Data is generated at a very high rate

• Data capturing involves many different data capturing devices

• Data keeps on increasing with time.

• Data storage is no more a challenging task

To access data at a faster rate, we need to have:

(i) A faster processor

(ii) A faster storage device

• Statement (i) is True but Statement (ii) is not relevant in the context

• Statement (ii) is True but Statement (i) is not relevant in the context

• Both Statements are correct and are relevant

• Both Statements are correct but are not relevant

Data Deletion may occur

• When storage device malfunction or crash

• users deletes the data

• malware attack

• All of the above

When data is deleted

(i) Data is actually deleted bit by bit

(ii) Deleted Data can never be recovered.

• Statement (i) is correct but (ii) is not

• Statement (ii) is correct but (i) is not

• Both statements are correct

• Both statements are incorrect

Security concerns associated with data are:

(i) deletion by some unauthorized person or software

(ii) unwanted recovery of data by unauthorized user/software

• Only statement (i) is correct

• Both statements are correct

• Statement (ii) is correct but (i) is not

• Both statements are incorrect

Data from a malfunctional storage device can never be recovered.

• True

• False

Encrypting file is one of the way to protect data in it.

• True

• False