WorksheetsPF-IAS-3102
Total questions: 65
Worksheet time: 33mins
What does encryption do to a message?
Shows who sent the message
Turns plain words into secret code
Makes code into plain words again
Checks if a message is available
What is decryption used for?
Hide a message from everyone
Make a new secret key quickly
Stop a computer from starting
Change secret code back to plain words
Which goal keeps information safe from prying eyes?
Nonrepudiation
Authentication
Integrity
Confidentiality
Authentication helps with which idea?
Keeping data unaltered
Sharing files to everyone
Proving who someone is
Making code unreadable
What does a cipher help you do with a message?
Color the message letters
Print the message louder
Make the message longer
Hide the message text
Which cipher shifts letters a certain number of places?
Picture puzzle
Caesar cipher
Word search
Vigenère cipher
In a Caesar cipher with a right shift of 3, A becomes which letter?
D
B
10
C
What does encrypting a message mean?
Creating pattern
Swapping letters
Hiding the real data
Creating puzzle
Which word best describes a substitution cipher?
Swap letters for other letters
Count numbers by twos
Sort words by size
Read words backward only
Which cipher uses more than one alphabet to make it harder?
Vigenère cipher
Morse code
Caesar cipher
Hiding the real data
What do you need to use the Vigenère cipher?
Pick random letters
A keyword for the table
Shift left by 3
Shift right by 6
If you shift letters right by 3 to encrypt, how do you decrypt a Caesar message?
Shift left by 3
Shift right by 6
Do nothing at all
Pick random letters
Which of these is also a substitution cipher like Caesar?
QR code
Caesar cipher
Vigenère cipher
ROT13
Why were simple ciphers like Caesar easy to break?
They follow simple patterns
They are too long to read
They need computers only
They use secret ink always
In the Vigenère cipher, the keyword letters repeat to match of what?
The message length
Reorder letters into new places
The page number
Changes letter order only
Which action describes transposition ciphers?
Changes letter order only
Change letters into numbers
Reorder letters into new places
Changes letters to symbols
What does a transposition cipher do to a message?
Changes letter order only
Deletes every other letter
Adds numbers to words
Changes letters to symbols
In a columnar transposition, where do you write letters first?
Across rows first
Down columns first
In zigzag lines first
Changes letters to symbols
Which word best matches Enigma?
Code machine
Math puzzle
Old machine
Game console
What is steganography?
Writing with invisible ink
Drawing fancy symbols
Counting secret numbers
Hiding messages inside files
Which file could hide a secret using steganography?
A picture file
A paper sheet
A printed book
The chosen row count
What key number told how many rows to use in a columnar transposition?
The biggest prime number
The chosen row count
The last page number
The total word count
What did the Enigma machine help with during World War II?
Sending coded messages
Protect who made a file
The chosen row count
The total word count
Digital watermarking can help
Protect who made a file
Print faster at home
Steganography
Make photos brighter
If you hide a message inside a cat photo, you are using
Steganography
Read down columns
Long division
File deleting
To undo a columnar transposition, you should
Erase all rows
Color each box red
Read down columns
Shuffle random letters
The Enigma machine looked most like a
Tiny wristwatch
Tall radio tower
Big kitchen oven
Typewriter with parts
Authentication helps to check the user’s what?
Shoe size
Favorite food
Height
Identity
Non-repudiation helps prove the message came from the what?
Battery
Window
Sender
Keyboard
Data at rest is stored where?
On other disk
On a disk
Data in Transit
Data on hold
Data in transit is moving between what?
On a disk
Two systems
On other disk
Data on hold
Data in use is kept in a computer’s what?
In transit
Data on hold
On disk
Active memory
Which kind of system uses one shared secret key?
Ceramic
Scenic
Assymetric
Symmetric
Which kind of system uses a public and a private key?
Asymmetric
Parallel
Dynamic
Symmetric
Full‑disk encryption protects what amount of a hard drive?
Only one disk
Only Folders
Only System
All data
Partition encryption protects which part?
One disk
One system
One section
One file
File‑level encryption protects what?
Individual files
Whole file
Entire file
None of the above
Volume encryption protects a set of what?
One disk
System
Folders and files
Cookies
In a challenge‑response, Bob proves he is what?
Sleepy
Hungry
Tall
Himself
What is plaintext?
A message before it is coded
A secret key used for locking
A scrambled code for encoding
A machine that decodes
What is a cryptographic key?
A long list of random words
A big number used with an algorithm
A box that keeps notes safe
A picture of the secret message
Key length means?
How fast it decoded
How user decrypt it
How many bits are in the key
How long the message is
Which idea is called security through obscurity?
Using no keys at all
Hiding how the code works
Sharing keys with everyone
Sending messages in plain words
Longer keys are usually do for what?
Slower to type on
Better for security reasons
Easier to guess
Harder to break for attackers
Who can read a message encrypted with a public key?
The owner of the public key
Only the sender of text
Anyone on the internet
The owner of the private key
If Alice uses Bob’s public key to lock a note, who opens it?
Bob with his private key
Alice with her public key
Anyone with any key
Teacher with class key
What is a message digest used for?
To open a for oppurtunity
To check if messages match
To draw a picture
To play with the attacker
What is called when two messages give the same hash value?
A celebration day for attacker
A collision happens
A happy checksum
A quick download of accessed file
SHA is a family of what kind of tools?
Simple algorithms
Small helper
Secure hash algorithms
Mixing security tools
MD5 was made to do what job?
Simple algorithms
Make a message digest
Store big data
Mixing security tools
What is resilience in simple words?
Ability to bounce back after problems
Having two servers for one job
Using one very tall server
A way to resolve problem
Which is a good example of redundancy?
Keeping cables in a single rack
Using one very tall server
Turning off the only router
Having two servers for one job
Which backup saves everything each time it runs?
Full backup saves all data
Incremental saves old photos
Differential deletes extra files
Mirror backup hides secrets
What does data replication do?
Shrinks files to tiny sizes
Copies live data to another place
Blocks all network traffic
Turns laptops into servers
What does a fence around a school help do?
Turn lights on at night
Help cars park closer
Make buildings look prettier
Keep people safely outside areas
What are bollards used for near doors?
Hold open heavy doors
Stop cars from driving close
Shine bright flashing lights
Scan badges for entry
Which pair works together to protect a place from cars and people?
Chairs and lockers
Camera and Guard
Markers and erasers
Fences and bollards
Which helper watches doors and helps keep people safe in a building?
Utility
Security guard
Police Officer
Park Police
Infrared sensors look for changes in what kind of energy?
Sound or music
Water or rain
Wind or breeze
Heat or infrared
Which attack is using strong force like breaking a door?
Password reset
Email phishing
RFID cloning
Brute-force attack
Multifactor Authentication (MFA) means?
More than one way to prove it is you
Only a password with many letters
A friend to tell the teacher your name
Turning the computer off and on
A code appears on a phone and works for a short time, then changes. What is this called?
A secret family word
A long security phrase
A permanent passcode
A one-time password
If a bad actor steals yesterday’s one-time password, what happens today?
It turns into a fingerprint
It will always work again
It will not work anymore
It unlocks every account
What does OTP stand for?
Open Tech Program
One Time Password
Online Ticket Pass
Only Text Passcode
Which Windows permission lets you see and change a file?
Read
Modify
Execute
Special
