Cybersecurity Essentials v1.1 Chapter 3 Quiz Answers

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Cybersecurity Essentials v1.1 Chapter 3 Quiz Answers
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Cybersecurity Essentials v1.1 Chapter 3 Quiz Answers

1. What is a vulnerability that allows criminals to inject scripts into web pages viewed by users?

buffer overflow
SQL injection
XML injection
Cross-site scripting*

Explanation:
Cross-site scripting (XSS) allows criminals to inject scripts that contain malicious code into web applications.

2. What type of attack targets an SQL database using the input field of a user?

buffer overflow
SQL injection*
XML injection
Cross-site scripting

Explanation:
A criminal can insert a malicious SQL statement in an entry field on a website where the system does not filter the user input correctly.

3. Which two reasons describe why WEP is a weak protocol? (Choose two.)

WEP uses the same encryption features as Bluetooth.
Everyone on the network uses a different key.
The key is static and repeats on a congested network.*
The default settings cannot be modified.
The key is transmitted in clear text.*

Explanation:
The initialization vector (IV) of WEP is as follows:
Is a 24-bit field, which is too small
Is cleartext and readable
Is static and causes identical key streams to repeat on a busy network

4. What is the difference between a virus and a worm?

Viruses hide in legitimate programs but worms do not.
Worms self-replicate but viruses do not.*
Viruses self-replicate but worms do not.
Worms require a host file but viruses do not.

Explanation:
Worms are able to self-replicate and exploit vulnerabilities on computer networks without user participation.

5. A criminal is using software to obtain information about the computer of a user. What is the name of this type of software?

phishing
adware
spyware*
virus

Explanation:
Spyware is software that tracks the activity of a user and obtains information about that user.

6. What is the meaning of the term logic bomb?

a malicious worm
a malicious program that uses a trigger to awaken the malicious code*
a malicious virus
a malicious program that hides itself in a legitimate program

Explanation:
A logic bomb remains inactive until a trigger event occurs. Once activated, a logic bomb runs malicious code that causes harm to a computer.

7. What is the term used when a malicious party sends a fraudulent email disguised as being from a legitimate, trusted source?

Trojan
vishing
phishing*
backdoor
social engineering

Explanation:
Phishing is used by malicious parties who create fraudulent messages that attempt to trick a user into either sharing sensitive information or installing malware.

8. What are two ways to protect a computer from malware? (Choose two.)

Empty the browser cache.
Use antivirus software.*
Delete unused software.
Keep software up to date.*
Defragment the hard disk.

Explanation:
At a minimum, a computer should use antivirus software and have all software up to date to defend against malware.

9. What occurs on a computer when data goes beyond the limits of a buffer?

a buffer overflow*
a system exception
an SQL injection
cross-site scripting

Explanation:
A buffer overflow occurs by changing data beyond the boundaries of a buffer and can lead to a system crash, data compromise, or cause escalation of privileges.

10. What is the term used to describe an email that is targeting a specific person employed at a financial institution?

spam
vishing
spear phishing*
target phishing
spyware

Explanation:
Spear phishing is a phishing attack customized to reach a specific person or target.

11. An attacker is sitting in front of a store and wirelessly copies emails and contact lists from nearby unsuspecting user devices. What type of attack is this?

RF jamming
smishing
bluejacking
bluesnarfing*

Explanation:
Blusnarfing is the copying of user information through unauthorized Bluetooth transmissions.

12. What are two of the tactics used by a social engineer to obtain personal information from an unsuspecting target? (Choose two.)

Intimidation*
compassion
honesty
urgency*
integrity

Explanation:
Social engineering tactics include the following:
Authority
Intimidation
Consensus/Social Proof
Scarcity
Urgency
Familiarity/Liking
Trust

13. What are two common indicators of spam mail? (Choose two.)

The email has keywords in it.
The email has misspelled words or punctuation errors or both.*
The email is from your supervisor.
The email is from a friend.
The email has no subject line.*
The email has an attachment that is a receipt for a recent purchase.

Explanation:
Spam is a common method of advertising through the use of unsolicited email and may contain malware.

14. Which term describes the sending of a short deceptive SMS message used to trick a target into visiting a website?

spam
smishing*
grayware
impersonation

Explanation:
Smishing is also known as SMS phishing and is used to send deceptive text messages to trick a user into calling a phone number or visiting a specific website.

15. A computer is presenting a user with a screen requesting payment before the user data is allowed to be accessed by the same user. What type of malware is this?

a type of logic bomb
a type of virus
a type of worm
a type of ransomware*

Explanation:
Ransomware commonly encrypts data on a computer and makes the data unavailable until the computer user pays a specific sum of money.

16. What is the name for the type of software that generates revenue by generating annoying pop-ups?

spyware
trackers
pop-ups
adware*

Explanation:
Adware is a type of malware that displays pop-ups on a computer to generate revenue for the creator of the malware.

17. What does a rootkit modify?

Microsoft Word
Notepad
screen savers
programs
operating system*

Explanation:
A rootkit commonly modifies an operating system to create a backdoor to bypass normal authentication mechanisms.

18. What is the name given to a program or program code that bypasses normal authentication?

virus
worm
ransomware
Trojan
Backdoor*

Explanation:
A backdoor is a program or program code implemented by a criminal to bypass the normal authentication that is used to access a system.

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