The Playfair cipher uses a block of plain text, each block containing 2 characters. Caesar Cipher is an example of a) Poly-alphabetic Cipher b) Mono-alphabetic Cipher c) Multi-alphabetic Cipher d) Bi-alphabetic Cipher View Answer. Which of the following is capable of becoming a key in a cryptographic algorithm? The following word was encrypted using a Caesar cipher with a shift of 2: ecguct.

MCQ 78: DES (Data Encryption Standard) follows. From the mentioned options, this happens only in Traffic analysis in which the attacker monitors the pattern of transmission.

In the Caesar cipher technique, the encryption is performed as follows. padding-left: 0px; Languages:

» Android » News/Updates, ABOUT SECTION For example, with a shift of 1, A would be replaced by B, B would become C, and so on. 4) Which of the following options correctly defines the Brute force attack? In this section of Data Communication and Networking - Cryptography MCQ (Multiple Choice) Based Questions and Answers,it cover the below lists of topics.All the Multiple Choice Questions and Answers (MCQs) have been compiled from the book of Data Communication and Networking by The well known author behrouz forouzan. » Node.js Languages: Which of the following options is the correct ciphertext for the given text if the key is 2? » Linux » Machine learning » SQL The Caesar Cipher technique is one of the earliest and simplest method of encryption technique. 4) Which of the following ciphers is a block cipher? » CSS » DOS The message or information is modified before sending it to the receiver. However, a string cannot be chosen for encryption in this case.

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Caesar cipher… » Puzzles » Content Writers of the Month, SUBSCRIBE In Caesar cipher, we can choose a number or a character which when performed addition modulo operation with the given letters of the plain text gives us ciphertext. » PHP » Embedded Systems

& ans. substantial cipher. 5) "A key is a string of bits used by a cryptographic algorithm to transform plain text into ciphertext." All the rest mentioned cipher techniques use the same key for encryption as well as decryption. » Java 3) Which of the following security attacks is not an active attack? One entity pretends to be some other entity.

As the key can be any string of bits, all the mentioned options are capable of becoming a key in a cryptographic algorithm. » Web programming/HTML » Certificates This Section covers below lists of topics. Answer: b Explanation: Caesar Cipher is an example of Mono-alphabetic cipher, as single alphabets are encrypted or decrypted at a time. » Networks CS Subjects: » C answer choices . » O.S. substitution cipher. » Java Web Technologies:

Hence, both these ciphers include the use of matrices. : » Content Writers of the Month, SUBSCRIBE » CS Basics Submitted by Monika Sharma, on February 02, 2020 . Ad: » Articles | Contact Us | Copyright || Terms of Use || Privacy Policy, If you have any Questions regarding this free Computer Science tutorials ,Short Questions and Answers,Multiple choice Questions And Answers-MCQ sets,Online Test/Quiz,Short Study Notes don’t hesitate to contact us via Facebook,or through our website.Email us @, Download Cryptography Multiple Choice Questions and Answers pdf file, Copyright || Terms of Use || Privacy Policy. Brutally forcing the user to share the useful information like pins and passwords. » C Aptitude que. » Privacy policy, STUDENT'S SECTION 1) We are provided the plain text “SUN”. » C++ 3. : You need to convert the given plain text into ciphertext under the Ceasar cipher encryption technique. » C » CSS 3) Which of the following cipher techniques include the involvement of matrix operations in their algorithms of encryption and decryption? romans. » Privacy policy, STUDENT'S SECTION 2) Which of the following is not a principle of data security?

Here, we have a set of multiple-choice questions and answers (quiz) on ciphers in Cryptography (basic concepts of Cryptography Techniques and different types of ciphers). » Data Structure

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