1500 Questions | CompTIA Security+ Certification 2026

Domain 2.0: Compliance and Operational Security (18%): Focuses on free a practical guide to cyber risk management strategies course, security policies, and the essential tools used for auditing and compliance.

Domain 3.0: Threats and Vulnerabilities (19%): Analyzing attack vectors such as DoS and Man-in-the-Middle, and utilizing scanners and intrusion detection systems.

Domain 4.0: Application, Data, and Host Security (21%): Implementing secure coding practices, encryption, backups, and hardening host configurations.

Domain 5.0: Access Control and Identity Management (21%): Deep dive into authentication (biometrics/passwords), RBAC, and protocols like Kerberos.

B. MAC Filtering

C. VLAN Segmentation

D. Role-Based Access Control

E. Content Filtering

F. Network Address Translation

Correct Answer: B

Explanation:

A (Incorrect): IP Filtering works at the network layer and can be easily bypassed via IP spoofing.

C (Incorrect): VLANs group devices logically but do not inherently validate hardware addresses for entry.

D (Incorrect): RBAC manages permissions based on user roles, not hardware identification.

E (Incorrect): Content filtering restricts access to specific websites or data types.

F (Incorrect): NAT is used for mapping private IP addresses to public ones, not for device validation.

Question 2: Which of the following attack types involves an adversary positioning themselves between a user and a server to intercept and potentially alter communication?

B. Buffer Overflow

C. Man-in-the-Middle (MitM)

D. SQL Injection

E. Bluejacking

F. Zero-day Exploit

Correct Answer: C

Explanation:

A (Incorrect): Brute force is a password-cracking method using trial and error.

B (Incorrect): Buffer overflow targets memory vulnerabilities in applications.

D (Incorrect): SQL Injection targets database queries through web input forms.

E (Incorrect): Bluejacking involves sending unsolicited messages over Bluetooth.

F (Incorrect): A Zero-day is an attack on a vulnerability that is unknown to the vendor.

Question 3: A company wants to ensure that even if an encrypted backup tape is stolen, the data cannot be read. Which security control is the most effective here?

B. Key Management and Rotation

C. Biometric Authentication

D. Auditing and Logging

E. Redundant Array of Independent Disks (RAID)

F. Air-gapping

Correct Answer: B

Explanation:

A (Incorrect): Physical locks prevent the theft but do not protect the data once the tape is already stolen.

C (Incorrect): Biometrics control access to a room or device, not the readability of the data on a physical tape.

D (Incorrect): Auditing tells you the tape was stolen but does not protect the data itself.

E (Incorrect): RAID provides availability and redundancy, not confidentiality or data protection against theft.

F (Incorrect): Air-gapping disconnects systems from the network but doesn't apply to the security of a physical backup tape in transit.

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