Unit 4 - Network Security

Question 1

What is malware

Answer 1

Malware is any software intenionally designed to cause damage to a computer,server,client or computer network

Question 2

What is the 7 types of malware ?

Answer 2

Trojans,spyware,adware,rookits,ransomware,worms,keyloggers

Question 3

What is the malware virus ?

Answer 3

They replicate their code in other programs

They infect other computers

Theu harm the computer by delecting corrupting or modifying files

Question 4

What malware is a worm

Answer 4

A worm replicates its self in order to spread to other computer.
They slow down networks and computers

Question 5

What is a trojan horse ?

Answer 5

They have a program that the user wants. However they also have a negative code that can then cause damage,take control,provides access to the computer

Question 6

What is ransomware ?

Answer 6

Holds a computer hostage by locking or encrypting access to it.
If the data is encrypted not even a cyber security professional can recover it. Once the ransom is paid to the attacker access is restored

Question 7

What is a brute force attack

Answer 7

A hacker will try every combination or password until the correct answer is found

Question 8

What does SQL stand for?

Answer 8

Structured query language

Question 9

What is an sql injection ?

Answer 9

Takes advantage of web inputs forms to access or deystroy data

Question 10

What is social engineering ?

Answer 10

Deception to gain personal information

Question 11

What is denial of service attacks ?

Answer 11

Flooding a server or network with pointless requests so that is fails or slow down

Question 12

What is data interpretation and theft ?

Answer 12

Stealing data or intercepting it with a man-in-the-middle attack

Question 13

Name 4 common preventation methods

Answer 13

penetration testing
• anti-malware software – including anti-virus software
• firewalls
• user access levels
• passwords
• encryption
• physical security

Question 14

What is penetration testing ?

Answer 14

Is the practice of deliberately trying to find security holes in your own system

Question 15

What is anti malware software ?

Answer 15

Anti-malware software will detect malware such as viruses, worms, trojans, and spyware

Question 16

What is encryption ?

Answer 16

Encryption is a way of securing data so that it cannot be read without the encryption key

Question 17

What are firewalls

Answer 17

is a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules

Question 18

What are user access levels

Answer 18

They are set by an admin. On how much a user can edit or see of a disk,folder and indivdual files

Question 19

What are Password policys?

Answer 19

chosen password has features like
• Minimum length of characters
• Include at least one lowercase letter
• Include at least one uppercase letter
• Include at least one symbol
• Change password every month

Question 20

What is physical security

Answer 20

hardware, software and networks are protected by physical methods

Question 21

Name 4 examples of physical security ?

Answer 21

• CCTV
• Intruder alarms
• Locks on doors or cabinets
• Fences, walls, barbed wire
• Security guards
• ID cards and signs
• Turnstiles and gates

Question 22

What are operating systems

Answer 22

Manage computer hardware, users and the resources used by the software.
Example multitasking, user managment, file managment

Question 23

What are graphical user interfaces

Answer 23

Pointers, icons, menu, drag and drop, windows

Question 24

What are the different types of user interfaces ?

Answer 24

Graphical user interfaces, command line interface, menu -driven interface

Question 25

What are interrupts

Answer 25

Are signals sent to the cpu by external devices to indicate an event that needs immidediate attention

Question 26

What is the difference between hardware and software interrupts

Answer 26

Hardware - generate by hardware devises. Printer out of paper
Software - are generate by programs. A wrong password will cause an error message

Question 27

What are the forms of network attacks?

Answer 27

Passive 
Active 
Insider 
Brute force 
Denial of service

Question 28

What is a passive attack

Answer 28

monitoring data across network and intercepting any sensitive information they find (through the use of network monitoring hardware and software

Question 29

What is an active attack

Answer 29

attacking a network with malware or other planned attacks

Question 30

What is a brute force attack

Answer 30

trying to gain access by using many password combinations