MCQ | Cryptography Basics | Information Security

Title
Which of the following is not a type of symmetric-key cryptography technique? Which of the following is not a type of symmetric-key cryptography technique? Caesar cipher Data Encryption Standard (DES) Diffie Hellman cipher Playfair cipher discuss The answer is: C. Diffie Hellman cipher
Which of the following is not a principle of data security? Which of the following is not a principle of data security? Data Confidentiality Data Integrity Authentication None of the above discuss The answer is: D. None of the above
Which of the following security attacks is not an active attack? OR Which of the following attacks is a passive attack? Which of the following security attacks is not an active attack? OR Which of the following attacks is a passive attack? Masquerade Modification of message Denial of service Traffic analysis discuss The answer is: D. Traffic analysis
Which of the following options correctly defines the Brute force attack? Which of the following options correctly defines the Brute force attack? Brutally forcing the user to share the useful information like pins and passwords. Trying every possible key to decrypt the message. One entity pretends to be some other entity The message or information is modified before sending it to the receiver. discuss The answer is: B. Trying every possible key to decrypt the message.
"A key is a string of bits used by a cryptographic algorithm to transform plain text into ciphertext." Which of the following is capable of becoming a key in a cryptographic algorithm? "A key is a string of bits used by a cryptographic algorithm to transform plain text into ciphertext." Which of the following is capable of becoming a key in a cryptographic algorithm? An integer values A square matrix An array of characters (i.e. a string) All of the above discuss The answer is: D. All of the above
A mechanism used to encrypt and decrypt data A mechanism used to encrypt and decrypt data. Cryptography Algorithm Data flow None of these discuss The answer is: A. Cryptography
To encrypt the plaintext, a cryptographic algorithm works in combination with a key To encrypt the plaintext, a cryptographic algorithm works in combination with a key... Word, number, or phrase Special Symbols Function Keys All of these discuss The answer is: A. Word, number, or phrase
The plaintext encrypts to different cipher text with different keys The plaintext encrypts to different cipher text with different keys True False discuss The answer is: A. True
Conventional cryptography also known as ... encryption Conventional cryptography also known as ... encryption. asymmetric-key logical-key symmetric-key None of these discuss The answer is: C. symmetric-key
The Data Encryption Standard (DES) is an example of a The Data Encryption Standard (DES) is an example of a ... Conventional cryptosystem Asymmetric cryptosystem Caesar's cryptosystem All of these discuss The answer is: A. Conventional cryptosystem
Public key cryptography is a ... cryptosystem Public key cryptography is a ... cryptosystem Symmetric Asymmetric Symmetric & Asymmetric both None of these discuss The answer is: B. Asymmetric
Security Goals of Cryptography are Security Goals of Cryptography are Confidentiality Authenticityn Data integrityn Non-repudiation All of these discuss The answer is: E. All of these
A process of studying cryptographic system is known as Cryptanalysis A process of studying cryptographic system is known as Cryptanalysis True False discuss The answer is: A. True
Cipher in cryptography is – Cipher in cryptography is – Encrypted message Algorithm for performing encryption and decryption Both algorithm for performing encryption and decryption and encrypted message Decrypted message discuss The answer is: B. Algorithm for performing encryption and decryption
The private key in asymmetric key cryptography is kept by The private key in asymmetric key cryptography is kept by Sender Receiver Sender and receiver All the connected devices to the network discuss The answer is: B. Receiver
Which one of the following algorithms is not used in asymmetric-key cryptography? Which one of the following algorithms is not used in asymmetric-key cryptography? DSA algorithm Electronic code book algorithm Diffie-Hellman algorithm RSA algorithm discuss The answer is: B. Electronic code book algorithm
Which is the cryptographic protocol that is used to protect an HTTP connection? Which is the cryptographic protocol that is used to protect an HTTP connection? Resource reservation protocol SCTP TLS ECN discuss The answer is: C. TLS
A key is a value that works with a cryptographic algorithm to produce a specific cipher text A key is a value that works with a cryptographic algorithm to produce a specific cipher text. True False discuss The answer is: A. True
A Public key size and conventional cryptography’s secret key size are closely related with one another A Public key size and conventional cryptography’s secret key size are closely related with one another. True False discuss The answer is: B. False
ElGamal encryption system is an asymmetric key encryption algorithm ElGamal encryption system is an asymmetric key encryption algorithm. Public-key cryptography Private-key cryptography Both None of these discuss The answer is: A. Public-key cryptography

Title

Which of the following is not a type of symmetric-key cryptography technique?

Caesar cipher
Data Encryption Standard (DES)
Diffie Hellman cipher
Playfair cipher

discuss

Which of the following is not a principle of data security?

Data Confidentiality
Data Integrity
Authentication
None of the above

discuss

Which of the following security attacks is not an active attack? OR Which of the following attacks is a passive attack?

Which of the following security attacks is not an active attack?

Which of the following attacks is a passive attack?

Masquerade
Modification of message
Denial of service
Traffic analysis

discuss

Which of the following options correctly defines the Brute force attack?

Brutally forcing the user to share the useful information like pins and passwords.
Trying every possible key to decrypt the message.
One entity pretends to be some other entity
The message or information is modified before sending it to the receiver.

discuss