C. Modification, Legitimate D. Suppliers, 9. _____ is a mark made by a sender and recognized easily by the receiver as belonging to the_______. C. Cryptosystem B. Intruders Ans: Security attack. The fixed _____ key of _____algorithm gave birth to double and triple DES. Computer security is needed in a business organisation to prevent damage caused by_____. Which of the following is a type of wiretapping? Thanks for visiting our website if you like the post on Cryptography and Network Security please share on social media. Acceptable Ans: Data Encryption Standard, 76. Ans: True, 29. D. Central Processing Unit (CPU), 29. C. Key It is created as part of public key cryptography during asymmetric-key encryption and used to decrypt and transform a message to a readable format. D. Changing, Trust, 65. 1. A. LANs Ans: Cryptanalyst. B. Reliability A private key, also known as a secret key, is a variable in cryptography that is used to decrypt and sometimes encrypt messages. Cryptography and Network Security MCQ with answers pdf for the preparation of Academic and competitive IT examinations. C. Memory The other key is private and can only be accessed by administrator. Program b. graphical coding c. HTML d. cryptography. Ans: Session. Vulnerability Ans: True, 55. Ans: Discrete logarithm problem, 28. C. NSH They are known only to the key’s generator and play an important role in cryptocurrencies. Input message in Cryptography is called; (a) Plain text (b) Cipher Text (c) Plain and cipher (d) None of the above ( ) 2. B. Diffie-Hellman Scheme is based on ___________. Ans: Firewall, 81. 64 bit, DES Ans: National Computer Security Association (NCSA), 66. Jamia Indian Defence Personnel Assignments, Quality Management MCQ – TQM multiple choice questions answers, Project Management MCQs with Answers pdf notes, Java Multiple Choice Questions with answers, Production and Operations Management MCQ with answers, Multiple Choice Questions on Personality Development. D. Decryption, Corruption. The DES algorithm is fixed for a _________ bit key. B. ___ are mutually agreed-upon code words, assumed to be known only to the user and the system. 16. Ans: Ease of implementation. C. 56 bit, DES D. Customers, Trapdoors, 66. In Hack Proofing Your Network (Second Edition), 2002. Ans: PKI. D. Key Construction, 21. Few attacks, low The various components of a basic cryptosystem are as follows − 1. Confusion, Diffusion A. A - 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. Random C. Passive and Active wiretapping C. WANs A. Accounting C. Security D. Information Hiding, 28. Ans: Military security. Answer & Solution. C. Session and Connection B. Hacktivism Watch Audio MCQ in Cryptography D. Incorrect, 11. Ans: Lattice, 48. Encrypted e-mail messages always carry a digital signature, so the _____ and _____ of the sender is assured. C. AES, Three D. Circular, 69. Changing, Modify The value of _____ and _____ should not be forgotten when we consider how to enforce security. Symmetric encryption, on the other hand, uses the same key to encrypt and decrypt data. Symmetric encryption can protect against forgery by a recipient. The inadvertent flaws fall into _________ categories B. The security services that IPSec provide requires shared keys to perform___________. ... Transposition is also known as _____. C. Two Secret key is another name for __________. Operating system C. Symmetric encrypted e-mail dilemma ________ identifies and organizes the security activities for a computing system. Computer security Symmetric key cryptography is also known as shared key cryptography. C. Kyoto C. Government, Managers Ans: Secure Electronic Transaction (SET), 72. D. Vernam Cipher, 31. Who formalized the structure of military security model? Ans: True, 89. These still provide adequate computational hardness, but don’t tax the client and server as much to use. The encrypted email processing can integrate with ordinary e-mail packages, so a person can send ___________messages. Ans: secret writing, 8. Ans: False, 42. Controls, encouraged by managers and administrators, are called __________. A. attacks, harm A. B. The characteristic pattern of groups of three letters is called ______. Ciphertext depends on _______. Any action that compromises the security of information owned by an organization is called_____. Combination C. Variation D. Binomial variation. C) symmetric key encryption is computationally slower. __________ provides proof-of-data origin on received packets. Asymmetric encryption offers a procedure that wraps the protected information in _______ package(s). 58. Unlike regular operating systems, trusted systems incorporate technology to address both ____ and _____ A. Exponential decipher, Users Accessibility Thanks for visiting our website, if you like please share the post MCQ on Cryptography and Network Security with Answers on social media. B. Two-headed device The most common symmetric algorithms in use today include … True/ False A _______is an association between a client and a server. _____ specifies certain procedures through which users can access _____. The _______ has established a service for assessing the security of commercial web sites. If the system is exposed to _______during execution, then _______ are vulnerability. _________is an association between a client and server. D. Computer data storage, 3. A. Hash Double DES, Two C. Low diffusion, Immunity to symbol insertion. B. attackers, damage Ans: ISAKMP, 65. _________ can be used to distribute other keys. A cryptanalyst is confronted by how many situations? ______ is the process of encoding a plain text to cipher text. Encrypted e-mail messages always carry a _____, so the authenticity and non-reputability of the sender are assured. Unacceptable _______ is a device that filters all traffic between a protected or “inside” network and a less trustworthy or “outside” network. A. DES, Implementation Ans: Malicious code, 35. D. Selection state, 70. A. Enhanced Original plaintext message A. If you are looking for a reviewer in datacom, topic in Electronics Systems and Technologies (Communications Engineering) this will definitely help you before taking the Board Exam. C. Users, Trapdoors D. Gamma, 41. 17. Ans: Vulnerability, 7. Ans: Trust, 51. The management of SAs can be either manual or through an Internet standard called________. A. __________ give us a reliable means to prove the origin of data or code. D. Are not the same, Asymmetric, 55. B. Byte Substitution Your email address will not be published. ___________perform the important services for ensuring the validity of inside addresses. IKE is considered a hybrid protocol because it combines (and supplements) the functions of three other protocols _______ and ________. Three Summary. C. Asymmetric. D. Stream decryption, Block decryption, 56. Ans: Backdoor, 40. C. Both (A) and (B) Ciphertext depends on the original plaintext message, the algorithm, and the _________. B. A. C. Asymmetric encryption A key advantage of the group protection approach is its ease of implementation. The encrypted text is also called _________ . Answer & Solution Discuss in Board Save for Later. __________ is an undocumented entry point to a module. Des, Three C. AES, Processing, 60 Destination IP address, security parameter index ( SPI.. The client and a server cryptographic system that uses private/public keys constant, Trust D.,. 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Portion of a more general scheme, each user selects a _______ and ________ must meet two primary ________. Users share a common key taken to apply an algorithm with sufficient _____ message is altered C. threat,.... Used for encryption and decryption B. Two-headed device C. Three-headed device D. Multi headed device 49... ( Second Edition ), 72 symmetric key cryptography is also called: to understand asymmetric cryptography the packets and... Employees, interference, 5 ( SA ), Authentication header ( )!