Data Security & Privacy

1. The Master File

Is the main source of data for an application

Is used to update the records in the Transaction File

Is another copy of the Main File

Is another copy of the Transaction file

A Master File (or Main File) is where data is stored but it may be updated using the record of recent changes found on the Transaction File.

Explanation

A Master File (or Main File) is where data is stored but it may be updated using the record of recent changes found on the Transaction File.

2. Piracy

Is legal if one makes copies of software for himself only

Is illegal copying of software which may be for personal use or for sale

Is impossible if one used product activation techniques

Refers to the stealing of data from protected systems

Any copies that are made in infrignement of a product's copyright are considered pirated copies and so are illegal.

Explanation

Any copies that are made in infrignement of a product's copyright are considered pirated copies and so are illegal.

3. Two methods of physical data security include

Locking doors and drawers of where data is stored.

Using passwords and access levels

Locking backup copies and using firewalls

Using firewalls and encryption

Physical security involves things that can be done to keep data secure, apart from those things that are done on the software level (eg passwords)

Explanation

Physical security involves things that can be done to keep data secure, apart from those things that are done on the software level (eg passwords)

4. Data encryption

Is software form of safeguarding of data

Is very effective in safeguarding data

All of the above

Data encryption is a software form of safeguarding data by putting it into a secret code. This code can only be decrypted with a specific key, making the data meaningless to anyone without the key. Therefore, data encryption is very effective in safeguarding data. The given answer, "all of the above," is correct because it encompasses all the statements mentioned, highlighting the various aspects and effectiveness of data encryption.

Explanation

Data encryption is a software form of safeguarding data by putting it into a secret code. This code can only be decrypted with a specific key, making the data meaningless to anyone without the key. Therefore, data encryption is very effective in safeguarding data. The given answer, "all of the above," is correct because it encompasses all the statements mentioned, highlighting the various aspects and effectiveness of data encryption.

5. The Transaction file needs to be sorted

So that the data can be backed up

So that the sorted file can be used as backup

To speed up the updating process

All of the above are true

Records in the Transaction File are sorted in the same order as the Master File so that the update process is facilitated and so faster.

Explanation

Records in the Transaction File are sorted in the same order as the Master File so that the update process is facilitated and so faster.