EHICAL HACKING CT-4

1. What is a Trojan horse in computer security?

• A) A type of malware that replicates itself
  
  

• B) A legitimate software application with hidden malicious functions
  
  

• C) A software designed to fix vulnerabilities in the system
  
  

• D) A type of firewall

2. Which of the following is a typical characteristic of a Trojan horse?

• A) It requires user interaction to spread
  
  

• B) It self-replicates across networks
  
  

• C) It remains undetected by antivirus software
  
  

• D) It replicates and spreads on its own

3. Which of the following is an infection technique commonly used by Trojans?

• A) Exploiting vulnerabilities in software applications
  
  

• B) Network propagation
  
  

• C) Using social engineering to trick users into downloading malicious software
  
  

• D) All of the above

4. Which of these is a key difference between a virus and a Trojan horse?

• A) A virus can self-replicate, whereas a Trojan cannot
  
  

• B) A Trojan can infect other files, while a virus cannot
  
  

• C) A virus operates silently, whereas a Trojan is always detected
  
  

• D) A Trojan is not harmful, while a virus is

5. Which action is commonly associated with a Trojan horse once installed on a victim’s machine?

• A) Logging keystrokes
  
  

• B) Sending out spam emails
  
  

• C) Denial of Service attacks

• D) Encrypting files for ransom

6. Which type of attack is often facilitated by a Trojan horse?

• A) Man-in-the-middle attack
  
  

• B) Phishing attack
  
  

• C) Remote Access Attack
  
  

• D) DDoS attack

7. What is the primary purpose of a backdoor in malware?

• A) To allow unauthorized access to a compromised system
  
  

• B) To encrypt files on the system
  
  

• C) To generate spam emails
  
  

• D) To replicate itself across systems

8. How does a Trojan horse typically spread?

• A) Through email attachments and malicious downloads
  
  

• B) By exploiting system vulnerabilities without user interaction
  
  

• C) Through social engineering tactics

• D) All of the above

9. What is a key method used by Trojans to avoid detection by antivirus software?

• A) Polymorphic code
  
  

• B) Social engineering

• C) Self-replication
  
  

• D) Use of firewalls

10. In which phase of the Trojan lifecycle does it begin to perform its malicious actions?

• A) Propagation phase
  
  

• B) Execution phase
  
  

• C) Infection phase

• D) Concealment phase