MCQs

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1. What is a dictionary attack in cybersecurity?
   a. Using a list of common passwords to guess the correct one
   b. Physically breaking into a computer
   c. Encrypting data with random keys
   d. Destroying computer files
   Answer: a. Using a list of common passwords to guess the correct onekaspersky+4
2. Which tool is commonly used for dictionary attacks?
   a. Microsoft Word
   b. John the Ripper
   c. Excel
   d. PowerPoint
   Answer: b. John the Rippergeeksforgeeks+1
3. What does an attacker need before performing a dictionary attack?
   a. The victim’s physical computer
   b. A list of possible passwords
   c. The victim’s email address only
   d. Antivirus software
   Answer: b. A list of possible passwordsblackfog+3
4. Why do dictionary attacks often succeed?
   a. Computers are slow
   b. Users choose weak, common passwords
   c. Networks are always unprotected
   d. Data is always stored in plain text
   Answer: b. Users choose weak, common passwordsacte+2
5. What type of wordlists do attackers use in dictionary attacks?
   a. Only words from the English dictionary
   b. Popular passwords and phrases
   c. Only numbers
   d. Programming languages
   Answer: b. Popular passwords and phrasesportnox+2
6. Dictionary attacks are a type of:
   a. Social engineering attack
   b. Brute-force attack
   c. Physical security breach
   d. Malware infection
   Answer: b. Brute-force attackvinsys+2
7. Which password is most vulnerable to dictionary attacks?
   a. j%!k98XzA
   b. Love123
   c. C7bXw3#Tr
   d. G$8pLm4Q
   Answer: b. Love123kaspersky+2
8. What is the main goal of a dictionary attack?
   a. Encrypt files
   b. Lock user accounts
   c. Crack passwords for unauthorized access
   d. Distribute viruses
   Answer: c. Crack passwords for unauthorized accesstechtarget+2
9. Which of the following helps prevent dictionary attacks?
   a. Using single word passwords
   b. Passwords like “password” or “123456”
   c. Complex, random passwords
   d. Sharing passwords
   Answer: c. Complex, random passwordsblackfog+2
10. A dictionary attack is generally:
    a. Time-consuming and slow
    b. Very fast and efficient
    c. Performed manually
    d. Impossible to automate
    Answer: b. Very fast and efficientsanfoundry+1
11. What is an example of a dictionary file entry?
    a. p@ssw0rd
    b. Table Chair Lamp
    c. Document.docx
    d. !QXpzlm#37
    Answer: a. p@ssw0rdportnox+1
12. Which attack is slower than a dictionary attack?
    a. Phishing attack
    b. Brute-force attack
    c. Man-in-the-middle attack
    d. SQL injection
    Answer: b. Brute-force attacksanfoundry+2
13. What is the difference between a brute force and dictionary attack?
    a. Dictionary attack uses common words, brute force tries all combinations
    b. Brute force only uses dictionary words
    c. Brute force is always faster
    d. Dictionary attack is more random
    Answer: a. Dictionary attack uses common words, brute force tries all combinationsrapid7+2
14. Which concept do dictionary attacks rely on?
    a. Most users choose passwords from a set of common words
    b. Passwords are always stored in plain text
    c. Computers are always online
    d. Antivirus cannot stop them
    Answer: a. Most users choose passwords from a set of common wordsacte+2
15. What is the first step in a dictionary attack?
    a. Encrypt the user’s files
    b. Compile or download a password list
    c. Change system settings
    d. Delete password histories
    Answer: b. Compile or download a password listgeeksforgeeks+1
16. How does an attacker test passwords in a dictionary attack?
    a. Using specialized software
    b. By guessing manually
    c. Through phone calls
    d. Browsing social media
    Answer: a. Using specialized softwaregeeksforgeeks+2
17. The use of substitutions like “@” for “a” in wordlists is called:
    a. Hashing
    b. Salt
    c. Password variation
    d. Encryption
    Answer: c. Password variationblackfog+1
18. What commonly triggers a dictionary attack?
    a. Weak password policies
    b. Firewalls
    c. Server downtime
    d. Software updates
    Answer: a. Weak password policiesvinsys+1
19. What is the best way to protect against dictionary attacks?
    a. Frequent password changes
    b. Using two-factor authentication
    c. Choosing long, complex passwords
    d. All of the above
    Answer: d. All of the abovenordpass+2
20. Which tool is NOT typically used in dictionary attacks?
    a. John the Ripper
    b. Hydra
    c. Notepad
    d. Aircrack-ng
    Answer: c. Notepadgeeksforgeeks
21. How do dictionary attack tools speed up password guessing?
    a. Parallel processing and automation
    b. Manual entry
    c. Using the internet
    d. Guessing one per hour
    Answer: a. Parallel processing and automationblackfog+1
22. What is a hybrid attack?
    a. Using dictionary words and brute force methods
    b. Only brute force
    c. Only wordlist
    d. Only manual guessing
    Answer: a. Using dictionary words and brute force methodsforensicmcq+1
23. Where do attackers often get their wordlists?
    a. Leaked password databases
    b. Random word generators
    c. Antivirus updates
    d. Paid subscriptions
    Answer: a. Leaked password databasesportnox+2
24. Why do attackers use variations and combinations of words in dictionary attacks?
    a. To increase chances of success
    b. To confuse security systems
    c. To slow down their own attacks
    d. To save disk space
    Answer: a. To increase chances of successkaspersky+2
25. Dictionary attacks are particularly effective against:
    a. Long random passwords
    b. Passwords based on common words
    c. Biometric security
    d. Smart cards
    Answer: b. Passwords based on common wordsacte+2
26. What happens if the password is not on the attacker’s dictionary list?
    a. The attack fails
    b. The system crashes
    c. The system is encrypted
    d. The password is changed
    Answer: a. The attack failsportnox+2
27. Which protocol could be tested with a tool like Hydra for dictionary attack?
    a. SSH
    b. FTP
    c. HTTP
    d. All of the above
    Answer: d. All of the abovegeeksforgeeks
28. Captcha systems mainly help defend against:
    a. Automated dictionary attacks
    b. File backups
    c. Malware infections
    d. Disk formatting
    Answer: a. Automated dictionary attacksacte+1
29. Dictionary attacks can be used against:
    a. Encrypted files
    b. Online accounts
    c. Database logins
    d. All of the above
    Answer: d. All of the abovekzero+2
30. What can slow down or prevent dictionary attacks?
    a. Account lockouts after failed attempts
    b. Password hints
    c. Browser caching
    d. Using default passwords
    Answer: a. Account lockouts after failed attemptsportnox+1
31. How is a password tested in a dictionary attack?
    a. Each word is hashed and compared to the stored hash
    b. Words are emailed to the victim
    c. Random words are posted on social media
    d. The system asks the user
    Answer: a. Each word is hashed and compared to the stored hashblackfog+1
32. Which type of password makes a dictionary attack harder?
    a. “password123”
    b. “letmein”
    c. “xY4!e@7pL”
    d. “qwerty”
    Answer: c. “xY4!e@7pL”kaspersky+2
33. Which is a limitation of dictionary attacks?
    a. Only works with passwords in the dictionary
    b. Can bypass multi-factor authentication
    c. Works with all biometrics
    d. Infects systems with malware
    Answer: a. Only works with passwords in the dictionarykaspersky+1
34. Password managers can help prevent dictionary attacks by:
    a. Generating strong passwords
    b. Guessing passwords for attackers
    c. Making passwords shorter
    d. Sharing passwords to all users
    Answer: a. Generating strong passwordsnordpass+1
35. Dictionary attacks are usually:
    a. Automated
    b. Performed manually
    c. Based on random guessing
    d. Never successful
    Answer: a. Automatedgeeksforgeeks+2
36. Which type of attack tries every possible character combination?
    a. Brute-force
    b. Dictionary
    c. Phishing
    d. Man-in-the-middle
    Answer: a. Brute-forcevinsys+2
37. Dictionary attacks can use wordlists in different:
    a. Languages
    b. Character sets
    c. Both a and b
    d. Only English
    Answer: c. Both a and bkaspersky+1
38. Which software is used to crack Wi-Fi passwords using dictionary attacks?
    a. Aircrack-ng
    b. Chrome
    c. Excel
    d. Notepad
    Answer: a. Aircrack-nggeeksforgeeks
39. Why are dictionary attacks risky for targets?
    a. They can quickly compromise weak accounts
    b. They require user permission
    c. They are never successful
    d. They validate strong password security
    Answer: a. They can quickly compromise weak accountsacte+2
40. Dictionary attacks target which aspect of cybersecurity?
    a. Authentication
    b. Data encryption only
    c. Hardware firewalls
    d. Network speed
    Answer: a. Authenticationvinsys+2
41. Which attack combines both dictionary and brute-force approaches?
    a. Hybrid attack
    b. Phishing attack
    c. DDoS attack
    d. Virus attack
    Answer: a. Hybrid attackforensicmcq+1
42. What is a reason attackers may refine dictionary wordlists?
    a. To match the target’s language or organization
    b. To slow down attacks
    c. To make passwords easier for users
    d. To cause more system crashes
    Answer: a. To match the target’s language or organizationportnox+1
43. Which of the following is NOT a characteristic of a dictionary attack?
    a. Uses a pre-made list of words
    b. Relies on password patterns
    c. Tries random binary data
    d. Is usually automated
    Answer: c. Tries random binary datablackfog+2
44. What is a syllable attack?
    a. Combination of dictionary and brute-force attack
    b. Only brute force techniques
    c. Only dictionary words used
    d. Only uses random guessing
    Answer: a. Combination of dictionary and brute-force attacksanfoundry
45. Which is a common defense against dictionary attacks?
    a. Multi-factor authentication
    b. Weak passwords
    c. Password reuse
    d. Default admin credentials
    Answer: a. Multi-factor authenticationnordpass+1
46. Dictionary attacks depend on weaknesses in:
    a. Password selection
    b. Network speed
    c. Firewall performance
    d. Hardware failure
    Answer: a. Password selectionkaspersky+2
47. What protocol is commonly targeted with remote login dictionary attacks?
    a. SSH
    b. SMTP
    c. POP3
    d. SNMP
    Answer: a. SSHgeeksforgeeks
48. How do dictionary attacks affect businesses?
    a. Risk of unauthorized access and data theft
    b. No impact
    c. Improve security
    d. Slow network speeds
    Answer: a. Risk of unauthorized access and data theftacte+2
49. Which statement is TRUE about dictionary attacks?
    a. They can be quickly detected with proper security measures
    b. They always succeed
    c. Antivirus prevents all dictionary attacks
    d. Only affect personal computers
    Answer: a. They can be quickly detected with proper security measuresblackfog+1
50. How important is user education for preventing dictionary attacks?
    a. Very important, since users need to choose strong passwords
    b. Not important at all
    c. Only useful for administrators
    d. Only needed for programmers
    Answer: a. Very important, since users need to choose strong passwordsnordpass+2

1. https://www.kaspersky.com/resource-center/definitions/what-is-a-dictionary-attack
2. https://www.geeksforgeeks.org/computer-networks/what-is-a-dictionary-attack/
3. https://www.blackfog.com/cybersecurity-101/dictionary-attack/
4. https://nordpass.com/blog/what-is-a-dictionary-attack/
5. https://www.portnox.com/cybersecurity-101/dictionary-attack/
6. https://www.acte.in/dictionary-attack-article
7. https://kzero.com/resources/guides/cyberattack/dictionary-attack/
8. https://www.vinsys.com/blog/top-30-mcqs-ceh-exam-preparation
9. https://www.paloaltonetworks.com/cyberpedia/dictionary-attack
10. https://www.techtarget.com/searchsecurity/definition/dictionary-attack
11. https://www.sanfoundry.com/cyber-security-questions-answers-campus-interviews/
12. https://www.rapid7.com/fundamentals/brute-force-and-dictionary-attacks/
13. https://forensicmcq.com/digital-forensics-mcqs-part-1-with-answer-and-explanation/
14. https://swimlane.com/blog/what-is-a-dictionary-attack/
15. https://www.youtube.com/watch?v=1v_6WMDuFMo
16. https://examradar.com/password-attacks-on-authentication-in-web-security-mcqs/
17. https://netenrich.com/fundamentals/dictionary-attacks
18. https://www.bitdefender.com/en-us/business/infozone/what-is-a-dictionary-attack
19. https://testbook.com/objective-questions/mcq-on-network-security–5eea6a0939140f30f369d917
20. https://www.yeahhub.com/cyber-security-ethical-hacking-mcq-questions-answers-part2/