Question 1:
What is malware, and how does it typically spread?

A. Malicious software designed to harm computer systems. It can spread through infected files, email attachments, or malicious websites.
B. A type of network attack that targets specific vulnerabilities in software.
C. A technique used to gain unauthorized access to a computer system.
D. A form of social engineering that tricks users into revealing sensitive information.
Question 2:
Which of the following is a type of malware that encrypts files and demands a ransom?

A. Worm
B. Trojan Horse
C. Ransomware
D. Spyware
Question 3:
What is a common method used to distribute malware?

A. Phishing emails
B. Malicious websites
C. Infected USB drives
D. All of the above
Question 4:
How can you protect yourself from malware attacks?

A. Keep software up-to-date
B. Use strong, unique passwords
C. Be cautious of suspicious emails and websites
D. All of the above
Question 5:
What is a keylogger, and how is it used?

A. A type of malware that records user keystrokes to steal sensitive information.
B. A network tool used to monitor network traffic.
C. A hardware device that intercepts network traffic.
D. A type of social engineering attack.

5 More CCNA Cybersecurity MCQs on Malware Detection
Question 6:
What is a signature-based antivirus software?

A. A type of antivirus software that identifies malware based on known patterns or signatures.
B. A software that analyzes the behavior of programs to detect malicious activity.
C. A software that uses artificial intelligence to detect new and unknown threats.
D. A hardware-based security solution that protects against malware attacks.
Question 7:
What is heuristic analysis?

A. A technique used to identify malware based on its behavior.
B. A method of analyzing network traffic to detect malicious activity.
C. A process of examining the source code of software to find vulnerabilities.
D. A technique used to encrypt data to protect it from unauthorized access.
Question 8:
What is a firewall, and how does it help protect against malware?

A. A hardware or software device that monitors network traffic and blocks unauthorized access.
B. A type of antivirus software that scans incoming and outgoing network traffic.
C. A security tool that encrypts data to protect it from unauthorized access.
D. A software that analyzes the behavior of programs to detect malicious activity.
Question 9:
What is a honeypot?

A. A decoy system designed to attract and trap attackers.
B. A type of firewall that blocks malicious traffic.
C. A software tool that analyzes network traffic.
D. A hardware device that protects against physical attacks.
Question 10:
What is a sandboxing technique?

A. A method of isolating a program from the rest of the system to analyze its behavior.
B. A technique used to encrypt data to protect it from unauthorized access.
C. A process of examining the source code of software to find vulnerabilities.
D. A type of firewall that blocks malicious traffic.

Question 1:
Which of the following is a Layer 3 device in the OSI model?

A. Hub
B. Switch
C. Router
D. Modem
Answer: C. Router

Explanation:
A router operates at the Network layer (Layer 3) of the OSI model. It forwards packets based on network layer addresses (IP addresses).

Question 2:
What is the purpose of the ARP protocol?

A. To resolve MAC addresses to IP addresses
B. To resolve IP addresses to MAC addresses
C. To route packets between networks
D. To provide network security
Answer: B. To resolve IP addresses to MAC addresses

Explanation:
The Address Resolution Protocol (ARP) is used to map IP addresses to physical (MAC) addresses. This is essential for devices on the same network to communicate with each other.

Question 3:
Which of the following is a common routing protocol?

A. HTTP
B. FTP
C. OSPF
D. DNS
Answer: C. OSPF

Explanation:
Open Shortest Path First (OSPF) is a dynamic routing protocol that uses a link-state algorithm to determine the best path between networks.

Question 4:
What is the purpose of a VLAN?

A. To physically segment a network
B. To logically segment a network
C. To provide network security
D. To increase network bandwidth
Answer: B. To logically segment a network

Explanation:
A Virtual Local Area Network (VLAN) allows you to logically group devices on a network, regardless of their physical location. This helps to improve network organization and security.

Question 5:
What is the default subnet mask for a Class C IP address?

A. 255.255.255.0
B. 255.255.0.0
C. 255.0.0.0
D. 255.255.255.255
Answer: A. 255.255.255.0

Explanation:
A Class C IP address has a default subnet mask of 255.255.255.0, which allows for 254 host addresses per network.

Question 6:
Which DNS record type is used to map a domain name to an IP address?

A. MX
B. CNAME
C. A
D. NS
Answer: C. A

Explanation:
An A record maps a domain name to an IPv4 address.

Question 7:
What is the purpose of a DNS resolver?

A. To store DNS records
B. To update DNS records
C. To query DNS servers for IP addresses
D. To manage DNS zones
Answer: C. To query DNS servers for IP addresses

Explanation:
A DNS resolver is a software application that queries DNS servers to translate domain names into IP addresses.

Question 8:
Which FTP command is used to retrieve a file from a server?

A. GET
B. PUT
C. LIST
D. DELETE
Answer: A. GET

Explanation:
The GET command is used to retrieve a file from an FTP server.

Question 9:
What is the default FTP port number?

A. 21
B. 22
C. 23
D. 25
Answer: A. 21

Explanation:
The default FTP port number is 21.

Question 10:
Which FTP mode transfers data in a separate control connection and data connection?

A. Active mode
B. Passive mode
C. Both A and B
D. Neither A nor B
Answer: A. Active mode

Explanation:
In active mode, the FTP client opens a data connection on a random port and informs the server. The server then initiates a data connection to the client's port.

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