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Grade 12 Cybersecurity & Passwords Worksheet with Answers
Grade 12 (US) · Year 13 (UK) · Class 12 (India) · Computer Science
Unit 4: Networks & SecurityCybersecurity
Password strength by counting combinations, spotting threats, and simple encryption. This free high school worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.
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Practice Sheetaethelsystems.comCybersecurity & Passwords
Grade 12 · Computer Science
Name
Class
Date
Learning goal: Cybersecurity
Directions: Read each question carefully and write your answer on the line. Use the diagram to help you.
Which is the strongest password: myname2010, Blue$Kite!92 or qwerty?
Answer: Blue$Kite!92
RememberStaying secure
- 1
A password is 2 lowercase letters (a–z). How many passwords are possible?
- 2
A PIN has 3 digits (0–9). How many different PINs are possible?
- 3
A PIN has 5 digits (0–9). How many different PINs are possible?
- 4
A Caesar cipher moved every letter 1 forward. Decrypt: MPHJO
- 5
A PIN has 4 digits (0–9). How many different PINs are possible?
- 6
A Caesar cipher moved every letter 3 forward. Decrypt: VDIH
- 7
A Caesar cipher moved every letter 3 forward. Decrypt: FRGH
- 8
A PIN has 6 digits (0–9). How many different PINs are possible?
- 9
A password is 3 lowercase letters (a–z). How many passwords are possible?
- 10
A Caesar cipher moved every letter 2 forward. Decrypt: ENQWF
- 11
A Caesar cipher moved every letter 2 forward. Decrypt: UCHG
- 12
A Caesar cipher moved every letter 1 forward. Decrypt: DMPVE
★ Challenge corner for fast finishers
10 computers each connect directly to every other computer with one cable. How many cables are needed?
How did I do?
Teacher's comments
Free printable worksheets with answer keys · aethelsystems.com/worksheets/computer/12/cybersecurity
Answer key — Cybersecurity & Passwords (Grade 12)
- 1.676
- 2.1,000
- 3.100,000
- 4.login
- 5.10,000
- 6.safe
- 7.code
- 8.1,000,000
- 9.17,576
- 10.cloud
- 11.safe
- 12.cloud
- ★45
Answer key (click to show)
- 1.676
- 2.1,000
- 3.100,000
- 4.login
- 5.10,000
- 6.safe
- 7.code
- 8.1,000,000
- 9.17,576
- 10.cloud
- 11.safe
- 12.cloud
- ★45 (challenge corner)
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