Computer Security Quiz – Multiple Choice Questions and Answers

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Computer Security Quiz – Multiple Choice Questions and Answers: Want to test your knowledge on Basic Computer Security concepts? If your answer is yes, then check out this article. As we have furnished all the Top Computer Security MCQ Questions and Answers in detail, all the candidates can easily take the exercise on Computer Security MCQs. When you finish answering these Computer Security MCQs, you will be able to check your scores with appropriate grades. Come let’s dive into the practice session of Computer Security MCQ Questions and Answers.

Computer Security Quiz – Multiple Choice Questions and Answers

Practice Computer Security MCQ Quiz Questions and Answers

What is the process of converting readable information into an unreadable form to protect it from unauthorized access?
a) Encryption
b) Decryption
c) Hashing
d) Authentication
Answer: a) Encryption
Explanation: Encryption is the process of converting readable information into an unreadable form to protect it from unauthorized access.

What is a technique used to exploit a vulnerability in a computer system?
a) Firewall
b) IDS
c) Penetration Testing
d) Antivirus
Answer: c) Penetration Testing
Explanation: Penetration testing is a technique used to exploit a vulnerability in a computer system.

Which of the following is a technique to prevent unauthorized access to a network?
a) Firewall
b) IDS
c) Penetration Testing
d) Antivirus
Answer: a) Firewall
Explanation: A firewall is a technique to prevent unauthorized access to a network.

What is a program that replicates itself and spreads from computer to computer, causing damage to files and systems?
a) Trojan
b) Worm
c) Virus
d) Spyware
Answer: b) Worm
Explanation: A worm is a program that replicates itself and spreads from computer to computer, causing damage to files and systems.

Which of the following is a method used to gain unauthorized access to a computer system by tricking the user into providing sensitive information?
a) Social Engineering
b) Phishing
c) Hacking
d) Denial of Service
Answer: b) Phishing
Explanation: Phishing is a method used to gain unauthorized access to a computer system by tricking the user into providing sensitive information.

What is a type of attack where the attacker sends a large number of requests to a server to overload it, causing it to crash or become unresponsive?
a) Denial of Service
b) Cross-site scripting
c) SQL Injection
d) Buffer Overflow
Answer: a) Denial of Service
Explanation: A Denial of Service (DoS) attack is a type of attack where the attacker sends a large number of requests to a server to overload it, causing it to crash or become unresponsive.

What is the process of verifying the identity of a user or system before allowing access to resources?
a) Authorization
b) Authentication
c) Encryption
d) Decryption
Answer: b) Authentication
Explanation: Authentication is the process of verifying the identity of a user or system before allowing access to resources.

Which of the following is a type of malware that disguises itself as a legitimate program to trick the user into downloading and installing it?
a) Trojan
b) Worm
c) Virus
d) Adware
Answer: a) Trojan
Explanation: A Trojan is a type of malware that disguises itself as a legitimate program to trick the user into downloading and installing it.

What is a technique used to hide the presence of malware on a system?
a) Rootkit
b) Firewall
c) IDS
d) Antivirus
Answer: a) Rootkit
Explanation: A rootkit is a technique used to hide the presence of malware on a system.

Which of the following is a method used to protect sensitive data by separating it from the rest of the network?
a) Firewall
b) IDS
c) DMZ
d) VPN
Answer: c) DMZ
Explanation: A DMZ (demilitarized zone) is a method used to protect sensitive data by separating it from the rest of the network.

What is a type of attack where the attacker inserts malicious code into a website to steal sensitive information from the users?
a) Cross-site scripting
b) SQL Injection
c) Phishing
d) Man-in-the-middle
Answer: a) Cross-site scripting
Explanation: Cross-site scripting (XSS) is a type of attack where the attacker inserts malicious code into a website to steal sensitive information from the users.

What is a method used to protect a password by adding a random string of characters to it before hashing it?
a) Salting
b) Hashing
c) Encryption
d) Decryption
Answer: a) Salting
Explanation: Salting is a method used to protect a password by adding a random string of characters to it before hashing it.

Which of the following is a type of attack where the attacker intercepts communication between two parties to steal sensitive information?
a) Phishing
b) Denial of Service
c) Man-in-the-middle
d) SQL Injection
Answer: c) Man-in-the-middle
Explanation: A man-in-the-middle (MitM) attack is a type of attack where the attacker intercepts communication between two parties to steal sensitive information.

What is a technique used to identify vulnerabilities in a computer system?
a) Penetration Testing
b) Firewall
c) IDS
d) Antivirus
Answer: a) Penetration Testing
Explanation: Penetration testing is a technique used to identify vulnerabilities in a computer system.

Which of the following is a method used to protect data by making a copy of it and storing it in a separate location?
a) Encryption
b) Backup
c) Firewall
d) IDS
Answer: b) Backup
Explanation: A backup is a method used to protect data by making a copy of it and storing it in a separate location.

What is a type of attack where the attacker gains access to a system by exploiting a vulnerability in software or hardware?
a) Social Engineering
b) Phishing
c) Hacking
d) Exploit
Answer: d) Exploit
Explanation: An exploit is a type of attack where the attacker gains access to a system by exploiting a vulnerability in software or hardware.

Which of the following is a type of attack where the attacker inserts malicious code into a database query to steal or manipulate data?
a) Cross-site scripting
b) SQL Injection
c) Phishing
d) Man-in-the-middle
Answer: b) SQL Injection
Explanation: SQL Injection is a type of attack where the attacker inserts malicious code into a database query to steal or manipulate data.

What is a method used to protect data by limiting access to it based on user roles and permissions?
a) Firewall
b) IDS
c) Authorization
d) Authentication
Answer: c) Authorization
Explanation: Authorization is a method used to protect data by limiting access to it based on user roles and permissions.

Which of the following is a type of attack where the attacker gains access to a system by guessing or cracking a password?
a) Brute Force
b) Cross-site scripting
c) SQL Injection
d) Social Engineering
Answer: a) Brute Force
Explanation: A Brute Force attack is a type of attack where the attacker gains access to a system by guessing or cracking a password.

What is a technique used to detect and respond to security incidents in real-time?
a) Firewall
b) IDS
c) Penetration Testing
d) Antivirus
Answer: b) IDS
Explanation: An Intrusion Detection System (IDS) is a technique used to detect and respond to security incidents in real-time.

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