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Encryption

Total questions: 19

Worksheet time: 13mins

Name
Class
Date
1.
Which of these is the most secure way of data transfer?
a)
HTTP
b)
HTTPS
2.

What does this padlock sign mean in the address bar of your browser?

a)

The site is secure and data is transmitted using SSL

b)

There is a padlock available for purchase

c)

The website does not include "safety locks"

d)

The page is locked down for some odd reason

3.
What type of key is not shared and computers cannot decrypt a message without it?
a)
Free key
b)
Private key
c)
Public key
d)
Personal key
4.
If the same key is used to encrypt and decrypt a message, this is known as? 
a)
Symmetric encryption
b)
Encryption doesn't exist!
c)
Asymmetric encryption
d)
Same-key encryption
5.
If there’s no lock in the address bar and the web address says HTTP without an S, that means every bit of data you send is private and safe.
a)
True
b)
False
6.
What type of key can be freely shared with anyone so that they can encrypt a message?
a)
Personal key
b)
Private key
c)
Free key
d)
Public key
7.
All Public Keys have a matching Private Key
a)
True
b)
False
8.

What does SSL stand for?

a)

Secure Socket Layer

b)

Secret Secure Layer

9.
Which of these is not required for Public Key encryption?
a)
Public Key
b)
Private Key
c)
Encryption Algorithm
d)
Specific Key
10.
Encryption is a way of 
a)
Securing Information on a network
b)
Securing Viruses
c)
Deleting applications
d)
Hacking Passwords
11.
An encryption key is used to help decrypt messages
a)
True
b)
False
12.
If you were to use a caeser cipher with a key of 3 shifts to the left, how would you encrypt the word: Cipher?
a)
ZAMEBO
b)
ZOMEBO
c)
ZFMEBO
d)
ZFMEBA
13.

Taking a secret message and reproducing the original plain text is known as?

a)

Caesar Cipher

b)

Encryption

c)

Cipher Text

d)

Decryption

14.

Asymmetric encryption uses only 1 key.

a)

True

b)

False

c)

Maybe

d)

God Knows

15.
hello has been encrypted with Caesar cipher to khoor. The key used was:
a)
abc
b)
3
c)
2
d)
alphabet mapping table
16.

The process of converting plaintext to ciphertext.

a)

cryptography

b)

cyphertext

c)

decryption

d)

encryption

17.

Information that is readable without performing any cryptographic operations.

a)

cryptography

b)

plaintext

c)

encryption

d)

decryption

18.

A string of text that has been converted to a secure form using encryption.

a)

encryption

b)

decryption

c)

ciphertext

d)

plaintext

19.

The process of converting a ciphertext into plaintext.

a)

encryption

b)

decryption

c)

plaintext

d)

cryptography

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