Security Part 2

Question 1

Physical Access Restriction ?

Answer 1

Security Biometrics : It’s Identification of humans by their unique traits

Question 2

Passwords ?

Answer 2

Most common tool used to restrict access to computers like
Effective Passwords:
Not real words and Changed frequently

Question 3

It’s an access Control Software
Doesn’t need to treat all users identically is ?

Answer 3

Access Privileges
Example : At least one of the
accounts on a PC must be administrator
which has additional privileges:
Permission to install additional software
Change system settings

Question 4

Firewalls ?

Answer 4

Protect from hackers
It filters information between a private system
and the rest of the internet
It could be either : Software program , Hardware device

Question 5

Encryption ?

Answer 5

Scrambling transmitted messages to secure them using a secret code called Key

Reverse process to retrieve original message is called Decryption

Question 6

Protection and prevention ?

Answer 6

Anti- Virus Software :
Protect computer/files from harm
Detect viruses and delete them
Run scheduled scans in the background

Question 7

Audit Control Software ?

Answer 7

It’s monitoring and recording user’s computer
transactions
( tracing and identifying suspicious computer activity)

Question 8

Backups and other precautions ?

Answer 8

Uninterrupted Power Supply (UPS) :
It Protects data loss due to Power failure

Question 9

It Shields electronic equipment from
dangerous power spikes

Answer 9

Surge protector

Question 10

Backup ?

Answer 10

Backups are used to replace originals
Best data recovery insurance is Regular Backups

Question 11

Is online in the cloud , remote storage
Off-site: hard drives or flash drives stored in remote locations
In laptops, external hard drives, network storage

Answer 11

Backup storage

Question 12

Only new files or modified files
Happens more or less continuously
Example : Hourly, Daily

Answer 12

Incremental backup

Question 13

Entire system backup
Makes a complete duplicate of a disk in case of a crash Example : Weekly or after installing new software

Answer 13

Bootable

Question 14

Safe Computing ?

Answer 14

Share with care
Handle shareware and freeware with care
Don’t pirate software
Disinfect regularly
Take your passwords
seriously

Question 15

Security and Privacy ?

Answer 15

Measures prevent crime but they can also threaten privacy
like :
Smart Badges
broadcast identification codes
Instead of paging the entire hospital, an
operator could route the call

Question 16

Security and Reliability ?

Answer 16

Software Bugs : which can cause more damage than viruses
It is impossible to eliminate all bugs
The bigger the system the bigger the problem

Y2K Bug : For decades only two digits were
used for year; e.g. (89 to 1989)
But in 2000 it would become 00 causing calculation errors

Question 17

UAE Cyber crime Law ?

Answer 17

Law No 5 of 2012
Any form of misuse of a computer/smart device or an electronic network/system

Question 18

Missiles that use computerized guidance
systems to locate their targets ?

Answer 18

Smart weapons

Question 19

Complex system that can assume almost complete responsibility for a task without
human input ?

Answer 19

Autonomous system

Question 20

Computers at War : Cyber Warfare ?

Answer 20

By attacking computer networks the enemy can cripple
Telecommunications , Power grids
and Water and gas supplies