wayground logo

Free Printable Worksheets

NEW

Font size

S
M
L
XL
Worksheets

Cryptography

Total questions: 17

Worksheet time: 9mins

Name
Class
Date
1.

Symmetric encryption is also known as

a)

public key encryption

b)

Asymmetrickey encryption

c)

Conventional Encryption

d)

Hybrid encryption

2.

Digital signature cannot provide following information

a)

Authentication

b)

Nonrepudiation

c)

Confidentiality

d)

integrity

3.

Encryption is used primarilly with

a)

transition entry

b)

computer processing

c)

file retention

d)

data communication

4.

which of the following process converts cipher text to plain text

a)

Hashing

b)

substitution

c)

Encryption

d)

Decryption

5.

MD5 is widely used hash function for producing Hash value of

a)

256 bits

b)

128 bits

c)

1024 bits

d)

64 bits

6.

What is the key size of Data encryption Algorithim used in cryptography

a)

64 bits

b)

128 bits

c)

56 bits

d)

1024 bits

7.

In cryptography the order of letters in message is rearranged by

a)

transpositional cipher

b)

substitution cipher

c)

Both A and B

d)

None Above

8.

What is Data encryption standard

a)

Block Cipher

b)

Stream Cipher

c)

Bit cipher

d)

None Above

9.

cryptographic hash function takes an arbitrary block of data and returns

a)

fixed size bit string

b)

variable size bit string

c)

Both A and B

d)

None above

10.

In asymmetric key cryptography private key is kept by

a)

Sender

b)

Receiver

c)

Both A and B

d)

All connected devices

11.

The Bitcoin was introduced in this world by?

a)

Staurt Haber

b)

W.Scort Sotnatto

c)

Satoshi Nakamoto

d)

Dave Bayer

12.

Bitcoin is a cryptocurrency invented in

a)

2007

b)

2008

c)

2011

13.

Bitcoins are created as a reward for a process known as

a)

Minning

b)

Wallet

c)

Ledger

d)

Bubble

14.

Transactions ar verified by network nodes through cryptography and recorded in a public distributed ledger called a ?

a)

Crypto currency wallet

b)

Blockchain

c)

Blockchain

d)

Cryptocurrency

15.

Which hash function used in Ledger

a)

SHA-256

b)

SHA-128

c)

SHA-512

d)

SHA-64

16.

What is the block time of the ledger?

a)

10Min

b)

12 Min

c)

5 Min

d)

15 Min

17.

Nakamoto implemented the bitcoin software as open-source code

a)

True

b)

False

c)

Can be True or False

d)

Cannot Say