Unit 10 : Digital Security

Question 1

What is digital security risk?

Answer 1

1. An event that could cause loss of or damage to a computer or mobile device hardware, software, data, informtion or processing capability

Question 2

What is computer crime?

Answer 2

1. Any illegal act involving the use of a computer or related devices

Question 3

What is cybercrime?

Answer 3

1. Online or Internet-based illegal act

Question 4

What has a higher degree of security risk than information kept in organizations

Answer 4

1. Information transmitted over networks

Question 5

What malware doesn’t replicate itself on other computers?

Answer 5

1. Trojan Horse

Question 6

What is a malware that hides within / looks like legitimate program?

Answer 6

1. Trojan Horse

Question 7

What malware copies itself repeadatedly, using up resources and possibly shutting doen computer or network?

Answer 7

1. Worm

Question 8

What malware is a potentially damaging computer program which can spread and damage files?

Answer 8

1. Virus

Question 9

What malware is delivered when we open file, run infected program or boot computer with infected disk in disk drive?

Answer 9

1. Payload

Question 10

List out the type of malware （ 7 ）

Answer 10

1. Adware
2. Ransomware
3. Rookit
4. Spyware
5. Trojan Horse
6. Virus
7. Worm

Question 11

What is a program that displays an online advertisement in a banner, pop-up window, or pop-under window on webpages, email messages, or other internet services

Answer 11

1. Adware

Question 12

What is a malware that blocks or limits access to a computer, phone, or file until the user pays a specified amount of money

Answer 12

1. Ransomware

Question 13

What is a malware that hides in a computer or mobile device and allows someone from a remote location to take full control of the computer or device?

Answer 13

1. Rootkit

Question 14

What is a malware placed on a computer / mabile device without user’s knowledge that secretly collects information about the user and then communicates the information it collects to some outside source while the user is online?

Answer 14

1. Spyware

Question 15

List out the internet and network attacks ( 5 )

Answer 15

1. Botnet
2. Zombie PC
3. Denial of Service Attack ( DOS )
4. Distributed DOS Attack
5. Back Door

Question 16

What network attack is a group of compromised computers or mobile devices connected to a network

Answer 16

1. Botnet

Question 17

What network attack is a compromised computer or device?

Answer 17

1. Zombie PC

Question 18

What network attack is disrupts computer access to an Internet Service ?

Answer 18

1. Denial of Service Attack ( DOS )

Question 19

What network attack is a larger scale or a DOS?

Answer 19

1. Denial DOS Attack ( DDOS Attack )

Question 20

What network attack is a program or set of instructions in a program that allow users to bypass security controls?

Answer 20

1. Back Door

Question 21

What association assists with DDOS attacks?

Answer 21

1. Computer Emergency Response Team Coordination Center ( CERT/CC )

Question 22

What does hacker uses to send an influx of confusing date messages to execute attack on other systems?

Answer 22

1. Unsuspection computer, called zombies

Question 23

How does virus spread? ( 3 )

Answer 23

1. Unscrumpulous programmers create a virus program. They hide the virus in a Word document and attach the Word document to an e-mail message
2. They use the Internet to send the e-mail message to thousands of users around the world
3. User open the attachment and their computers become infected with the virus

Question 24

What is a macro virus?

Answer 24

1. Malicious code writen in word programs

Question 25

How to prevent macro virus? ( 2 )

Answer 25

1. Set macro security level in applications that allow you to write macros 2. At medium security level warning displays that a document contains a macro

Question 26

What is macros?

Answer 26

1. Instructions saved in an application, such as word processing or spreadsheet program

Question 27

What is antivirus software originally developed to ?

Answer 27

1. Detect and remove computer viruses

Question 28

What does antivirus also protects against?

Answer 28

1. Worms 2. Trojan Horses

Question 29

What is virus signature?

Answer 29

1. Specific pattern of virus code 2. The binary pattern of the machine code of a particlar virus

Question 30

What does Virus Signature also called as

Answer 30

1. Virus Definition

Question 31

What is the usage of virus signature?

Answer 31

1. Antivirus programs look for virus signatures to identfy the presence of a virus

Question 32

How does Antivirus finds and remove malware ? ( 5 )

Answer 32

1. Uses information to detect if virus has tampered any files 2. Records information about the files such as file size and creation 3. Attempts to remove any detected virus 4. Quarantines infected files that it cannot remove 5. Keeps files in separate area of hard disk

Question 33

List out the preventive measures for preventing malware ( 8 )

Answer 33

1. Never start a computer with a removable media ( USB , Flash Drive ) 2. Set the macro security in programs so you can enable or disable macros 3. Install an antivirus program on all of your computers 4. Never open e-mail attachment unless it is from a trusted source 5. If the antivirus program flags an e-mail attachment as infected, delete the attachment immediately 6. Check all downloaded programs for viruses, worms, or Trojan horses 7. Installing a personal firewall 8. Scan all removable media

Question 34

What leads to system failure? ( 6 )

Answer 34

1. Prolonged malfunction of computer 2. Noise - Unwanted electrical signal 3. Undervoltage - drop in electrical supply 4. Overvoltage / Power Surge 5. Loss of hardware, software or data

Question 35

What causes system failure? ( 3 )

Answer 35

1. Aging hardware 2. Natural disasters 3. Electrical Power Disturbances

Question 36

What serves a protector that provides power during power loss?

Answer 36

1. Uninterruptible Power Supply ( UPS ) * Protects computer and Equipment from electrical power disturbances

Question 37

What is digital signature?

Answer 37

1. Encrypted code that a software attaches to an electronic message to verify the identity of the message sender

Question 38

What is a secure site?

Answer 38

1. Website that uses encryption to secure data

Question 39

What is a digital certificate?

Answer 39

1. A notice that guarantees a user or websites that is legitimate

Question 40

What authorized company issues and verifies digital certificates?

Answer 40

1. Certificate Authority ( CA ) * Verisign * User apply for digital certificate from CA

Question 41

What does digital certificate stores?

Answer 41

1. User's Name 2. Issuing CA's Name / Signature 3. Serial Number of Certificate * It was encrypted

Question 42

What does Secure Socket Layer ( SSL ) does?

Answer 42

1. Is a security protocol that encrypt all data that passes between client

Question 43

What is the web address indicate secure connections such as SSL?

Answer 43

1. Https

Question 44

What does Secure Socket Layer ( SSL ) requires?

Answer 44

1. Digital Cert * Prevents illegal tampering of data

Question 45

What does backup do?

Answer 45

1. Process for duplicate file, program or disk

Question 46

What is the difference between Full Backup and Selective Backup?

Answer 46

1.Full Backup - Backup all files in the computer 2. Selective Backup - Select which files to back up

Question 47

What can backup prevents?

Answer 47

1. In case of system failures or corrupted files, restore files by copying ro original location

Question 48

List out the all the disaster recovery plan

Answer 48

1. Disaster Recovery Plan 2. Emergency Plan 3. Backup Plan 4. Recovery Plan 5. Test Plan

Question 49

What plan is a written plan for restoring computer operations in the event of a disaster?

Answer 49

1. Disaster Recovery Plan

Question 50

What is the steps to be taken immediately after disaster

Answer 50

1. Emergency Plan

Question 51

What determine that how backup files and equipment would be used to resume information processing?

Answer 51

1. Backup Plan

Question 52

What is the actions to be taken to restore fill information processing operations?

Answer 52

1. Revovery Plan

Question 53

What simulates various levels of disasters and records the ability to recover?

Answer 53

1. Test Plan