Information Cyber Security (ICS) Solved MCQs

Computer security, cybersecurity or information technology security is the protection of computer systems and networks from information disclosure, theft of or damage to their hardware, software, or electronic data, as well as from the disruption or misdirection of the services they provide

176.	A hacker guessing suggested password to a program is call as?
A.	password guessing
B.	dictionary attack
C.	default password attack
D.	none of these
Answer» C. default password attack

177.	Symmetric key encryption is also called as?
A.	public key encryption
B.	private key encryption
C.	both of these
D.	none of these
Answer» B. private key encryption

178.	Conversion of Cypher text to plain text?
A.	encryption
B.	decryption
C.	simple text
D.	none of these
Answer» B. decryption

179.	__is used to create the organisation's overall security program.
A.	program policy
B.	purpose
C.	security
D.	none of these
Answer» A. program policy

180.	An act of protecting information from unauthorised disclouser to an entity.-
A.	intergrity
B.	avability
C.	confidentiality
D.	none of these
Answer» C. confidentiality

181.	A way to ensure that the entity is indeed what it claims to be.-
A.	authentication
B.	accountability
C.	identification
D.	security
Answer» A. authentication

182.	The__model is 7 layer architecture where each layer is having some specific functionality to perform.
A.	tcp
B.	osi
C.	ois
D.	none of these
Answer» B. osi

183.	The full form of OSI is OSI model__.
A.	open systems interconnection
B.	open software interconnection
C.	open connection
D.	open system internet
Answer» A. open systems interconnection

184.	The technique in which when one character is replaced by another Character is called as?
A.	transposition
B.	substitution
C.	combinational
D.	none of these
Answer» B. substitution

185.	Conversion of plain text into Cipher text is called as________.
A.	encryption
B.	decryption
C.	hidden text
D.	none of above
Answer» A. encryption

186.	In Symmetric schemes requires both parties to share how many secret key?
A.	one
B.	two
C.	three
D.	four
Answer» A. one

188.	In DES step both LPT and RPT undergoes in how much key Rounds?
A.	8
B.	16
C.	32
D.	64
Answer» B. 16

189.	What is the 4th step in DES Algorithm?
A.	key transformation
B.	s-box substitution
C.	p-box permutation
D.	expansion permutation
Answer» C. p-box permutation

190.	In AES in which Round Subkeys are Generated from Original key for each round?
A.	key expansion
B.	initial round
C.	finale round
D.	none of these
Answer» A. key expansion

191.	AES stands for?
A.	authorized encryption standard
B.	advance encryption standard
C.	advance encryption strategy
D.	none of these
Answer» B. advance encryption standard

187.	Blum Blum Shub Generator is based on which Algorithm?
A.	private key
B.	public key
C.	both a & b
D.	none of these
Answer» B. public key

192.	Which of them is type of Cipher?
A.	stream cipher
B.	block cipher
C.	both of them
D.	none of these
Answer» C. both of them

193.	The message which is not understandable is called as?
A.	cipher text
B.	plain text
C.	hidden text
D.	both a & c
Answer» A. cipher text

194.	The__is a polygraphic substitution cipher based on linear algebra.
A.	hill cipher
B.	playfair cipher
C.	affine cipher
D.	none of these
Answer» A. hill cipher

195.	__is the practice of concealing a message within another message,image or file.
A.	steganography
B.	cryptography
C.	cipher
D.	receiver
Answer» A. steganography

196.	In asymmetric key cryptography, the private key is kept by __________
A.	sender
B.	receiver
C.	sender and receiver
D.	none of these
Answer» B. receiver

197.	In cryptography the original message before being transform is called
A.	simple text
B.	plain text
C.	empty text
D.	filled text
Answer» B. plain text

198.	An asymmetric-key (or public-key) cipher uses
A.	1 key
B.	2 key
C.	3 key
D.	4 key
Answer» A. 1 key

199.	In Asymmetric-Key Cryptography, although RSA can be used to encrypt and decrypt actual messages, it is very slow if the message is
A.	short
B.	flat
C.	long
D.	thin
Answer» C. long

200.	In Asymmetric-Key Cryptography, the two keys, e and d, have a special relationship to
A.	other
B.	data
C.	keys
D.	each other
Answer» D. each other

Information Cyber Security (ICS) Solved MCQs

A hacker guessing suggested password to a program is call as?

Symmetric key encryption is also called as?

Conversion of Cypher text to plain text?

__is used to create the organisation's overall security program.

An act of protecting information from unauthorised disclouser to an entity.-

A way to ensure that the entity is indeed what it claims to be.-

The__model is 7 layer architecture where each layer is having some specific functionality to perform.

The full form of OSI is OSI model__.

The technique in which when one character is replaced by another Character is called as?

Conversion of plain text into Cipher text is called as________.

In Symmetric schemes requires both parties to share how many secret key?

Blum Blum Shub Generator is based on which Algorithm?

In DES step both LPT and RPT undergoes in how much key Rounds?

What is the 4th step in DES Algorithm?

In AES in which Round Subkeys are Generated from Original key for each round?

AES stands for?

Which of them is type of Cipher?

The message which is not understandable is called as?

The__is a polygraphic substitution cipher based on linear algebra.

__is the practice of concealing a message within another message,image or file.

In asymmetric key cryptography, the private key is kept by __________

In cryptography the original message before being transform is called

An asymmetric-key (or public-key) cipher uses

In Asymmetric-Key Cryptography, although RSA can be used to encrypt and decrypt actual messages, it is very slow if the message is

In Asymmetric-Key Cryptography, the two keys, e and d, have a special relationship to

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