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Chapter 10: Encryption Techniques

Total questions: 10

Worksheet time: 6mins

Name
Class
Date
1.

"Technique of combining words to hide information "

What is the above statement referring to?

a)

Crypto currency

b)

Psychology

c)

Cryptography

d)

Biology

2.

In cryptography, plaintext is also known as

a)

Ordinary text

b)

Straight text

c)

Reverse text

d)

Cleartext

3.

Using cryptography techniques, plaintext is converted to

a)

cryptotext

b)

ciphertext

c)

inverted text

d)

coded text

4.

The method of hiding the actual meaning of plaintext is called

a)

key

b)

decryption

c)

encryption

d)

plaintext

5.

The method of the meaning of ciphertext is recovered is called

a)

encryption

b)

recovery

c)

revival

d)

decryption

6.

Who is the person that used cryptography in sending message to his generals?

a)

Christopher Columbus

b)

Julius Caesar

c)

Isaac Newton

d)

Charles Dickens

7.

Method of encrypting text is known as

a)

writing

b)

keying

c)

cipher

d)

typing

8.

The two types of cipher are

a)

secret cipher

b)

caesar cipher

c)

conceal cipher

d)

polyalphabetic cipher

9.

Using table above for Caesar Cipher, convert the plaintext "GORENG" to ciphertext

a)

HPSFOP

b)

HPSFAQ

c)

HPSFOH

d)

HPSFAD

10.

Using table above for Caesar Cipher, convert the plaintext "DUDUK" to ciphertext

a)

EVEVQ

b)

EVEVL

c)

EVEVP

d)

EVEVR