Computer Network Mcqs

Page No. 52

Voice privacy in GSM cellular telephone protocol is provided by _______


aA5/2 cipher

✓


bb5/4 cipher

✖


c b5/6 cipher

✖


db5/8 cipher

✖


View Answer A5/2 cipher

Which one of the following is a cryptographic protocol used to secure HTTP connection?


astream control transmission protocol (SCTP)

✖


btransport layer security (TLS)

✓


cexplicit congestion notification (ECN)

✖


dresource reservation protocol

✖



Cryptanalysis is used __________


ato find some insecurity in a cryptographic scheme

✓


b to increase the speed

✖


cto encrypt the data

✖


dto make new ciphers

✖



What is data encryption standard (DES)?


a block cipher

✓


bstream cipher

✖


cbit cipher

✖


d byte cipher

✖


View Answer block cipher

In cryptography, the order of the letters in a message is rearranged by __________


atranspositional ciphers

✓


bsubstitution ciphers

✖


c both transpositional ciphers and substitution ciphers

✖


dquadratic ciphers

✖



Which one of the following algorithm is not used in asymmetric-key cryptography?


a rsa algorithm

✖


b diffie-hellman algorithm

✖


celectronic code book algorithm

✓


ddsa algorithm

✖



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


a sender

✖


b receiver

✓


csender and receiver

✖


dall the connected devices to the network

✖


View Answer receiver

In cryptography, what is cipher?


aalgorithm for performing encryption and decryption

✓


bencrypted message

✖


cboth algorithm for performing encryption and decryption and encrypted message

✖


ddecrypted message

✖



In File Transfer Protocol, data transfer cannot be done in __________


astream mode

✖


bblock mode

✖


ccompressed mode

✖


d message mode

✓


View Answer message mode

In Active mode FTP, the client initiates both the control and data connections.


aTrue

✖


b False

✓


cA & B

✖


dNone of these

✖


View Answer False

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