MCQ 1 The original message, before being transformed, is

(A) Cipher text (B) plaintext (C) decryption (D) None of the above

MCQ 2 The process of disguising plaintext in such a way that its substance gets hidden (into what is known as cipher-text) is called _________________.

(A) cryptanalysis (B) decryption (C) reverse engineering (D) encryption

MCQ 3 In _____________ sniffing, the network traffic is not only supervised & locked but also be can be altered in different ways to accomplish the attack.

(A) passive (B) active (C) network (D) None of the above

MCQ 4 In a database where the encryption is applied the data is cannot be handled by the unauthorised user without

(A) Encryption key (B) Decryption key (C) Authorised key (D) Primary key

MCQ 5 It provides one time session keys between two parties or persons joins each other.

(A) Diffie Hellman (B) RSA (Rivest Shamir Adleman Algorithm) (C) DES (Data Encryption Standard) (D) AES (Advanced Encryption Standard)

MCQ 6 Public key cryptography used in

(A) RSS Algorithm (B) RAS Algorithm (C) RSA Algorithm (D) RAA Algorithm

MCQ 7 Which is the threads for clients?

(A) Virus (B) Worms (C) Trojan Horses (D) All of the above

MCQ 8 The substitutional cipers are _____________________.

(A) polyalphabetic (B) mono alphabetic (C) Sami alphabetic (D) Both A and C

MCQ 9 In _______________ the plain-text is processed 1-bit at a time & a series of actions is carried out on it for generating one bit of cipher-text.

(A) Block Cipher (B) Stream cipher (C) One-time pad (D) Playfair Cipher

MCQ 10 The process of transforming plain text to unreadable text.

(A) Decryption (B) Encryption (C) Network Security (D) Information Hiding

MCQ 11 In symmetric-key cryptography, the same key is used by

(A) One Party (B) Multi Party (C) Third Party (D) Both Party

MCQ 12 In Cryptography, the original message, before being transformed, is called ____________________.

(A) Simple Text (B) Plain Text (C) Cipher text (D) Empty Text

MCQ 13 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) Long (C) Thin (D) Flat

MCQ 14 Why can a message encrypted with the Public Key only be decrypted with the receiver’s appropriate Private Key? (Assymmetric Encryption)

(A) A so called "one way function with back door" is applyed for the encryption (B) Not true, the message can also be decrypted with the Public Key (C) The encrypted message contains the function for decryption which identifies the Private Key (D) All of the above

MCQ 15 The ciphers of today are called __________________________.

(A) Transposition Cipher (B) Round ciphers (C) Substitution Cipher (D) All of the above

MCQ 16 Full form of TSP.

(A) Time stamping Protocol (B) Trial stamping Protocol (C) Time serial protocol (D) None of the above

MCQ 17 A digital signature needs a _________________.

(A) public key system (B) private key system (C) shared key system (D) All of the above

MCQ 18 Cryptography can be divided into __________________ types.

(A) 5 (B) 4 (C) 3 (D) 2

MCQ 19 In symmetric-key cryptography, the key locks and unlocks the box is

(A) same (B) shared (C) private (D) public

MCQ 20 A session symmetric key between two persons or parties is used

(A) Two Times (B) Only once (C) Multiple Times (D) Depends on situation occues

MCQ 21 Study of creating a d using encryption and decryption techniques.

(A) Decryption (B) Encryption (C) Cryptography (D) Cipher

MCQ 22 _______________ is the mathematical procedure or algorithm which produces a cipher-text for any specified plaintext.

(A) Encryption Algorithm (B) Hashing Algorithm (C) Tuning Algorithm (D) Decryption Algorithm

MCQ 23 There are ______________ types of cryptographic techniques used in general.

(A) 2 (B) 3 (C) 4 (D) 5

MCQ 24 A substitution cipher replaces one symbol with the ________________.

(A) same symbol (B) another (C) provide two symbols for each (D) All of tbe above

MCQ 25 Which agency assigns IP address

(A) IEEE (B) ANSI (C) ICANN (D) BSNL