Top CompTIA Security+ (SY0-701) Certification Exam MCQs 2025

Cybersecurity is a critical concern for businesses and organizations worldwide, given the ever-increasing number of cyber threats and attacks. The CompTIA Security+ (SY0-701) certification exam is an industry-recognized certification that validates an individual's expertise in cybersecurity. The exam tests the candidate's knowledge of various security-related topics, including network security, cryptography, vulnerability management, and identity management.

 

In this blog, we have provided ten multiple-choice questions with answers and explanations to help candidates prepare for the CompTIA Security+ exam. The MCQs cover a range of topics related to CompTIA Security+ Certification exam, including wireless security, types of attacks, mobile device security, security controls, and encryption. Each question has a clear explanation to help candidates understand the concept better.

 

CompTIA Security+ Certification Exam MCQs 2025

 

1. Which of the following authentication methods involves a challenge-response mechanism?

a) Kerberos

b) RADIUS

c) TACACS+

d) LDAP

 

Answer: a) Kerberos

 

Explanation: Kerberos uses a challenge-response mechanism to authenticate users.

 

2. Which of the following is a method of preventing SQL injection attacks?

 

a) Input validation

b) Denial of service attacks

c) Encryption

d) Firewall rules

 

Answer: a) Input validation

 

Explanation: Input validation is a method of preventing SQL injection attacks by verifying user input to ensure that it does not contain any malicious code.

 

3. Which of the following encryption algorithms is used for securing wireless networks?

 

a) AES

b) DES

c) WEP

d) RSA

 

Answer: c) WEP

 

Explanation: WEP (Wired Equivalent Privacy) is an encryption algorithm used for securing wireless networks.

 

4. Which of the following protocols is used for securely transferring files over the internet?

 

a) FTP

b) SFTP

c) TFTP

d) HTTP

 

Answer: b) SFTP

 

Explanation: SFTP (Secure File Transfer Protocol) is a protocol used for securely transferring files over the internet.

 

5. Which of the following is a type of attack that involves tricking a user into divulging sensitive information?

 

a) DDoS

b) Phishing

c) Spoofing

d) Man-in-the-middle

 

Answer: b) Phishing

 

Explanation: Phishing is a type of attack that involves tricking a user into divulging sensitive information, such as login credentials or credit card numbers.

 

6. Which of the following is a common way to protect against buffer overflow attacks?

 

a) Using strong passwords

b) Installing antivirus software

c) Input validation

d) Implementing firewalls

 

Answer: c) Input validation

 

Explanation: Input validation is a common way to protect against buffer overflow attacks by verifying user input to ensure that it is not longer than the allocated buffer space.

 

7. Which of the following is a type of attack that involves overwhelming a system with traffic to make it unavailable?

 

a) DoS

b) DDoS

c) Spoofing

d) Man-in-the-middle

 

Answer: a) DoS

 

Explanation: DoS (Denial of Service) is a type of attack that involves overwhelming a system with traffic to make it unavailable.

 

8. Which of the following is a type of malware that disguises itself as legitimate software?

 

a) Trojan

b) Rootkit

c) Worm

d) Spyware

 

Answer: a) Trojan

 

Explanation: A Trojan is a type of malware that disguises itself as legitimate software in order to trick users into installing it.

 

9. Which of the following is a type of encryption that uses a single key for both encryption and decryption?

 

a) Symmetric

b) Asymmetric

c) Hashing

d) Digital signature

 

Answer: a) Symmetric

 

Explanation: Symmetric encryption uses a single key for both encryption and decryption.

 

10. Which of the following is a type of authentication method that uses a physical characteristic of the user?

 

a) Biometric

b) Token

c) Smart card

d) Password

 

Answer: a) Biometric

 

Explanation: Biometric authentication uses a physical characteristic of the user, such as a fingerprint or retina scan, to authenticate their identity.

 

11. Which of the following is a type of attack that involves intercepting and altering communication between two parties?

 

a) Man-in-the-middle

b) Spoofing

c) Phishing

d) Brute force

 

Answer: a) Man-in-the-middle

 

Explanation: A man-in-the-middle attack involves intercepting and altering communication between two parties, allowing the attacker to eavesdrop on the conversation or manipulate the data being transmitted.

 

12. Which of the following is a type of authentication method that uses a unique code generated by a device?

 

a) Biometric

b) Token

c) Smart card

d) Password

 

Answer: b) Token

 

Explanation: Token authentication uses a unique code generated by a device, such as a hardware token or a mobile app, to authenticate the user's identity.

 

13. Which of the following is a type of network topology where all devices are connected to a central point?

 

a) Bus

b) Ring

c) Star

d) Mesh

 

Answer: c) Star

 

Explanation: In a star topology, all devices are connected to a central point, such as a switch or router.

 

14. Which of the following is a type of access control that uses a set of predefined rules to determine what actions a user can perform?

 

a) Discretionary access control (DAC)

b) Mandatory access control (MAC)

c) Role-based access control (RBAC)

d) Rule-based access control (RBAC)

 

Answer: d) Rule-based access control (RBAC)

 

Explanation: Rule-based access control uses a set of predefined rules to determine what actions a user can perform based on their role or job function.

 

15. Which of the following is a type of encryption that uses two keys, one for encryption and one for decryption?

 

a) Symmetric

b) Asymmetric

c) Hashing

d) Digital signature

 

Answer: b) Asymmetric

 

Explanation: Asymmetric encryption uses two keys, one for encryption and one for decryption, providing a higher level of security than symmetric encryption.

 

16. Which of the following is a type of protocol used for securely browsing the internet?

 

a) HTTP

b) HTTPS

c) FTP

d) SMTP

 

Answer: b) HTTPS

 

Explanation: HTTPS (Hypertext Transfer Protocol Secure) is a protocol used for securely browsing the internet, encrypting all data transmitted between the web server and the user's browser.

 

17. Which of the following is a type of malware that is designed to spread from one system to another without human intervention?

 

a) Virus

b) Worm

c) Trojan

d) Spyware

 

Answer: b) Worm

 

Explanation: A worm is a type of malware that is designed to spread from one system to another without human intervention, often exploiting vulnerabilities in software or operating systems.

 

18. Which of the following is a type of cloud service that provides virtualized computing resources over the internet?

 

a) Infrastructure as a Service (IaaS)

b) Platform as a Service (PaaS)

c) Software as a Service (SaaS)

d) Network as a Service (NaaS)

 

Answer: a) Infrastructure as a Service (IaaS)

 

Explanation: IaaS provides virtualized computing resources, such as servers, storage, and networking, over the internet, allowing organizations to scale their infrastructure up or down as needed.

 

19. Which of the following is a type of attack that involves attempting to guess a password by trying different combinations of characters?

 

a) Brute force

b) Dictionary

c) Rainbow table

d) Social engineering

 

Answer: a) Brute force

 

Explanation: A brute force attack involves attempting to guess a password by trying different combinations of characters, often using automated software to speed up the process.

 

20. Which of the following is a method for securing wireless networks by encrypting data and authenticating users?

 

a) MAC filtering

b) WPA2

c) NAT

d) SSID broadcasting

 

Answer: b) WPA2

 

Explanation: WPA2 (Wi-Fi Protected Access II) is a method for securing wireless networks by encrypting data and authenticating users, providing a higher level of security than WEP (Wired Equivalent Privacy).

 

21. Which of the following is a type of attack that involves flooding a network with traffic to overload and disrupt it?

 

a) DoS

b) DDoS

c) Spoofing

d) Injection

 

Answer: a) DoS

 

Explanation: A DoS (Denial of Service) attack involves flooding a network with traffic to overload and disrupt it, making it unavailable to users.

 

22. Which of the following is a method for securing mobile devices by encrypting data and requiring authentication to access the device?

 

a) MDM

b) BYOD

c) VPN

d) Mobile application management (MAM)

 

Answer: a) MDM (Mobile Device Management)

 

Explanation: MDM is a method for securing mobile devices by encrypting data and requiring authentication to access the device, allowing organizations to manage and control mobile devices remotely.

 

23. Which of the following is a type of security control that detects and prevents unauthorized access attempts?

 

a) Firewall

b) Intrusion detection system (IDS)

c) Antivirus software

d) Data loss prevention (DLP)

 

Answer: b) Intrusion detection system (IDS)

 

Explanation: An IDS is a type of security control that detects and prevents unauthorized access attempts by monitoring network traffic for signs of suspicious activity.

 

24. Which of the following is a type of vulnerability assessment that involves testing the security of a system or network from an attacker's perspective?

 

a) Penetration testing

b) Vulnerability scanning

c) Patch management

d) Risk assessment

 

Answer: a) Penetration testing

 

Explanation: Penetration testing involves testing the security of a system or network from an attacker's perspective, attempting to exploit vulnerabilities to gain access and assess the impact.

 

25. Which of the following is a type of encryption that uses a single key for both encryption and decryption?

 

a) Symmetric

b) Asymmetric

c) Hashing

d) Digital signature

 

Answer: a) Symmetric

 

Explanation: Symmetric encryption uses a single key for both encryption and decryption, making it faster than asymmetric encryption but less secure.

 

CompTIA Security+ Training Schedule

 

Also Check: Top Interview Questions for CompTIA Security+ Certified Professionals

 

Conclusion - CompTIA Security+ Certification Exam MCQs

 

The CompTIA Security+ exam certification is a valuable certification for anyone looking to establish a career in cybersecurity. The exam covers a range of topics, and candidates need to have a strong understanding of various security-related concepts to pass the exam. The MCQs provided in this blog are designed to help candidates test their knowledge and identify areas they need to focus on before taking the exam.

 

By studying and understanding the explanations provided, candidates can feel more confident in their ability to pass the CompTIA Security+ exam. As cybersecurity continues to be a critical concern for businesses and organizations, the demand for certified professionals is only going to increase. Therefore, taking the time to study and prepare for the CompTIA Security+ certification can lead to exciting career opportunities in the field of cybersecurity.

 

Get in touch with our experts now, if you are aiming to take Security+ course training at Vinsys.