CompTIA A+ Core 1 Practice Questions: Security

8 free, exam-style CompTIA A+ Core 1 (220-1201) practice questions covering Security. Each question shows the correct answer and a clear explanation. Ready for the real thing? Take the full timed quiz below.

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Q1. Which type of malware replicates itself across networks?

A.Trojan
B.Ransomware
C.Worm✓ Correct
D.Spyware

Explanation: A worm is a type of self-replicating malware that spreads automatically across networks without needing user intervention. Unlike a virus, it doesn’t require a host file and can quickly infect multiple systems, often exploiting security vulnerabilities. Learn more.

Q2. Which type of malware encrypts a user's files and demands payment for the decryption key?

A.Spyware
B.Trojan
C.Ransomware✓ Correct
D.Rootkit

Explanation: Ransomware is a type of malicious software designed to block access to a computer system or encrypt data until a sum of money is paid. Learn more.

Q3. What is the most secure wireless encryption standard currently available for consumer Wi-Fi?

A.WEP
B.WPA
C.WPA2
D.WPA3✓ Correct

Explanation: WPA3 (Wi-Fi Protected Access 3) is the latest standard, offering better protection against password guessing and improved encryption compared to WPA2. Learn more.

Q4. Which authentication factor is represented by a fingerprint scan?

A.Something you are✓ Correct
B.Something you know
C.Somewhere you are
D.Something you do not have

Explanation: Biometrics such as fingerprints are inherence factors, commonly described as something you are. Learn more.

Q5. Which firmware security feature helps prevent unsigned bootloaders from starting?

A.Secure Boot✓ Correct
B.Wake-on-LAN
C.Disk cleanup
D.Screen mirroring

Explanation: Secure Boot verifies bootloader signatures before allowing the system to continue startup. Learn more.

Q6. What does a TPM provide for a modern PC?

A.Hardware-backed storage for cryptographic keys✓ Correct
B.Extra video outputs
C.Laser printer fusing
D.Wi-Fi channel bonding only

Explanation: A Trusted Platform Module can securely store cryptographic keys used by features such as disk encryption. Learn more.

Q7. Which type of malware disguises itself as legitimate software to trick users into installing it?

A.Worm
B.Trojan✓ Correct
C.Rootkit
D.Ransomware

Explanation: A Trojan horse appears to be legitimate or useful software but contains hidden malicious functionality that activates once installed, unlike worms which self-replicate across networks. Learn more.

Q8. What is the purpose of enabling multifactor authentication (MFA) on an account?

A.Reduce password length requirements
B.Require two or more verification methods to log in✓ Correct
C.Automatically back up account data
D.Disable password expiration

Explanation: Multifactor authentication requires a user to provide two or more independent credentials, such as a password plus a code from an authenticator app, greatly reducing the risk of unauthorized access. Learn more.