B. B. Byte Substitution Modification, Illegitimate Ans: Secure Electronic Transaction (SET), 72. ... MCQ Multiple Choice Questions and Answers on E Commerce. Ans: True, 89. The individual who is creating the digital signature uses their own private key to encrypt signature-related data; the only way to decrypt that data is with the signer's public … C. Password, Files D. One, 27. A. Ans: Intentional, inadvertent, 33. A. Digram True/False Public key and Private Key are different. Eguardian offers online courses & top quality writing services with accuracy, incorporates formatting standards and as per your desire. B. Decrypted e-mail dilemma The ___________protocol is responsible for sending change Cipher Spec messages. A. Triple-DES procedure is C = E (k1, D (k2, E (k1,m))). _______ cannot protect against forgery by a recipient, since both sender and recipient share a common key. Public key; Symmetric; Asymmetric; None 190. Computer security is needed in a business organisation to prevent damage caused by_____. Ans: Confidentiality and Integrity, 63. C. Variation Ans: Bastion host, 83. True/ False A key is a some long binary number. In _____________ separation, processes conceal their data and computations in such a way that they are unintelligible to outside processes. D. Limited use of an object, 30. A. A. Hash Three True/False Time Ans: Encapsulating Security Payload (ESP), Authentication Header (AH). Symmetric algorithms use ___________ key(s). Required fields are marked *. Four D. Tannenbaum, 32. 14. D. Incorrect, 11. Ans: Vulnerability, 7. _______ is a device that filters all traffic between a protected or “inside” network and a less trustworthy or “outside” network. D. Validation, 26. Key Diffusion C. Key A . The ________ is likely to be the commercial-grade symmetric algorithm of choice for years, if not decades. Random Unacceptable Ans: Separate access, 57. A. Ans: Firewalls, 56. B. Advantages and Disadvantages of symmetric key cryptography Asymmetric or public key encryption systems use two keys, _________ and _________. Asymmetric Key Cryptography: Under this system a pair of keys is used to encrypt and decrypt information. D. A, B and C, 44. 56 bit, AES C. DES Public key cryptography is also known as -----cryptography. One key either Private key (Secret key) or Public Key (known to everyone) is used for encryption and other is used for decryption; Weakness of the Public Key Encryption: Public key Encryption is vulnerable to Brute-force attack. C. Cryptosystem Ans: columnar transposition, 11. One Ans: Cryptographic, 41. Especially at scale, this is extremely important and … B. File ________ is another way to segment the network. __________ give us a reliable means to prove the origin of data or code. Testing, Trapdoors Ans: Digital signature, 80. The encrypted text is also called _________ . A. AH B. Encipherment Complexity The two keys have the property that deriving the private key from the public key is computationally infeasible. C. Symmetric algorithm, Asymmetric algorithm Diffie-Hellman Scheme is based on ___________. C. Three keys A. FDMA A. Answer & Solution. Major symmetric algorithms are … Confusion, Diffusion C. DES and RSA D. Intrusion, 2. Temporary acquired permission, Files True/False A. A. True /False In _____________, each piece of information is ranked at a particular sensitivity level, such as unclassified, restricted, confidential, secret, or top secret. Public key cryptography: Public key cryptography is a cryptographic system that uses private/public keys. B. IKE is considered a hybrid protocol because it combines (and supplements) the functions of three other protocols _______ and ________. Your email address will not be published. D. Logarithmic decipher, Senders, 63. Time taken to apply an algorithm in ______ is proportional to the length of the message. Triple DES C. Diagram The size of the enciphered text should be no larger than the text of the original message. It is also considered as symmetric approach and contains only one key. When the encryption and decryption keys of an encryption algorithm ______, it is called ______. B. Alpha _____ is a mark made by a sender and recognized easily by the receiver as belonging to the_______. B. Redundancy Asymmetric cryptography is one of these methods and is a more advanced version of symmetric cryptography, which we will explain first. Program b. graphical coding c. HTML d. cryptography. secret-key public key Errors in ________ should not cause ________ of further information in the message. _________ enables such an analyst to infer data that should be kept confidential in the database. Ans: Cipher suite, 68. Risk Mitigation ... B. Plaintext.It is the data to be protected during transmission. A. TCP-IP The security services that IPSec provide requires shared keys to perform___________. C. Biba Ans: Passwords, 45. Public key system is best used for _____. Which of the following is yet to achieve extensive adoption? Ans: 64, 21. A. D. Cracking, 67. Internal security D. Stream decryption, Block decryption, 56. User information One headed device C. Asymmetric. When one entity pretends to be a different entity, we call it ________. D. Security Associations(SA), 68. Ans: Security attack, 2. Ans: True. Public and private keys are paired for secure communication, such as email. Avoid the risk The other key is private and can only be accessed by administrator. Q.12 Secret-key encryption is also known as (A) Asymmetric encryption (B) Symmetric encryption (C) Secret-encryption (D) Private encryption Ans: D Private encryption Q.13 The concept of electronic cash is to execute payment by (A) Credit Card (B) ATM Card (C) Using computers over network (D) Cheque Ans: C Using computers over network. C. Encipherment Complexity 2. Because the users share a common secret key S, the Diffie-Hellman scheme is an example of an asymmetric key exchange protocol. Operating system B. A. Ans: secret writing, 8. Which of the following is a type of wiretapping? C. Asymmetric encryption B. C. Security Parameter Index(SPI) A. Deciphering, Corruption B. Packet Filters Asymmetric encryption relies on asymmetric cryptography, also known as public key cryptography. Public key encryption uses multiple keys. A. Changing, Modify 17. D. Informative wiretapping, 33. B. Ans: Trapdoor, 39. Double DES D. ASymmetric encrypted e-mail dilemma, 38. They are known only to the key’s generator and play an important role in cryptocurrencies. B. Hoffman Ans: False, 88. Ans: one. 18. A. Ans: AES, 24. AES is a __________ algorithm. Symmetric key cryptography is also known as shared key cryptography. Ans: Block cyphers. B. 37. A. Ans: Symmetric encryption, 77. B. Ans: Simplicity, complexity, 85. C. Encryption C. Passive and Active wiretapping Repetitiveness of _____ algorithm, makes it suitable for ______ on a single-purpose chip. Answer & Solution Discuss in Board Save for Later. D. 64 bit, AES, 61. A. A control is an action, device, procedure, or technique that removes or reduces__________. A. A Computer attacker may be either B. Asymmetric key is also called: D. Suppliers, 9. A. In order to avoid the problems in transmission, encrypted e-mail converts the entire cypher text message to________ characters. Agreed-upon, Users C. Key exchange and Authentication A. C. Transport D. Deletion, Illegitimate, 52. A. B. Intruders Ans: Security planning, Cryptography and Network Security MCQ with answers Set-II, Customer Relationship Management MCQ with Answers. A. View WProject 9.docx from NETWORKING 200-125 at Georgia Institute Of Technology. Ans: Administrative controls. Which of the following allows a function to be performed on more than one node? Ans: Session. Eguardian offers online courses & top quality writing services with accuracy, incorporates formatting standards and as per your desire. In order to communicate each pair of hosts using IPSec, there must be a ______ with one another. B. Two-headed device Ans: Public key, 27. An analyst can determine an algorithm with sufficient _____. Ans: Alert protocol, 69. Digital signatures are based on public key cryptography, also known as asymmetric cryptography. Ciphertext depends on _______. A. attacks, harm Private Key cryptography is also known as -----cryptography. D. Cipher Spec, 37. Ans: paging, segmentation, 50. The question paper contains 40 multiple choice questions with four choices and students will have to pick the correct one (each carrying ½ marks.). Ans: Lattice, 48. The__________ refers to moving beyond the single organization to an inter-organizational hierarchy. D. Encrypted key, Message, 62. Ciphertext.It is the scrambled version of the plaintext produced by the encryption algorithm using a specific the encryption key. C. Symbol Digital signature, Sender Specifically, the most common form of encryption used today involves a public key, which anyone can use to encrypt a message, and a private key (also known as a secret key), which only one person should be able to use to decrypt those messages. As the name suggests, it involves 2 people using the same private key to both encrypt and decrypt information. D. employees, interference, 5. Ans: Method of key exchange, 78. C. 56 bit, DES In order to communicate each pair of hosts using IPSec, it must establish a_____ with one another. A _____ is a cryptographic algorithm that uses two related keys, a public key and a private key. 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. The primary disadvantage of packet filtering routers is a combination of ______ and ______. Even if the public key is known by everyone the intended receiver can only decode it because he alone knows the private key. The encrypted email processing can integrate with ordinary e-mail packages, so a person can send ___________messages. C. AES, Implementation D. Computer data storage, 3. B. Three Employees B. C. Key Confusion ... Public-key encryption is also known as _____ . Share all or nothing Ans: Tunnel mode and Transport mode. One key is used to encrypt data, while another is used to decrypt data. Certificate The ciphertext is not … Public-key encryption, also known as public-key cryptography, is a cryptographic system that uses a pair of keys: a public key and a private key. C. Authentication Original plaintext message Impersonation is a more significant threat in a wide area network than in a local one. ________ and ________ refers to the amount of labor needed to encrypt a message. The public key can be shared freely among the users and the private key, or the secret key, is known only to the recipient. Primary state A _______is an association between a client and a server. A public key is used for encryption and a private key is used for decryption. DES, Processing D. Multi headed device, 49. Any action that compromises the security of information owned by an organization is called_____. Ans: A node, a host, 52. Ans: True, 23. A. A. B. NULL Risk assessment is a technique supporting _________. Acceptable D. Odd, 15. B. C. Privacy B. A proxy gateway is a________. D. Decryption, Corruption. C. Both random and sequential C. Both (A) and (B) Enhanced An application proxy gateway is also called as ______. A. Decryption D. Security, 34. Triple DES can counter _____, offering _____ security. Pairing two cryptographic keys in this manner is also known as asymmetric cryptography. __________ is a feature in a program by which someone can access the program other than by the obvious, direct call, perhaps with special privileges. Control information D. Block encryption, 17. Negative wiretapping B. B. 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. The purpose of computer security is to prevent ______ from doing the _______. D. MANs, 39. A key advantage of the group protection approach is its ease of implementation. Ans: Pair of keys (two keys). D. None. Secondary state Both private key and public key are kept by the receiver ... MCQ 101: In public key cryptography, a key that decrypts the message. 1. C. Two Positive wiretapping Ans: Redundancy, physical controls, 90. Conventional cryptography is also known as _____ or symmetric-key encryption. B. Come in pairs, Symmetric __________ are ideally suited to digital signatures. Controls, encouraged by managers and administrators, are called __________. A. C. Both (A) and (B) Ans: Integrity, 5. Ans: Cryptanalyst. C. Three-headed device Symmetric cryptography also known as secret-key encryption is used to encrypt and decrypt data using a single secret key. 60. Any action that compromises the security of information owned by an organization is called_____. _____ is a characteristic that often grows over time, in accordance with evidence and experience. __________ provides proof-of-data origin on received packets. Watch Audio MCQ in Cryptography Ans: True, 29. Cryptography is the art of __________. 61. B) the Data Encryption Standard is a symmetric key encryption system. Confidentiality and content forgery are often handled by____________. Using a public key algorithm, such as RSA, one can generate two keys that are mathematically linked: one private and one public. C. Book Cipher Digital signatures work because public key cryptography depends on two mutually authenticating cryptographic keys. MCQ on Cryptography and Network Security with Answers, Multiple Choice Questions are available for IT examination preparation. Ans: SSL Handshake Protocol, 67. True/False PGP stands for __________. Amateur or cracker D. Customers, Trapdoors, 66. B. TDMA Block transformation does not depend on which of the following? B. D. Private key, Private key, 64. B. Cryptographic hash function The inadvertent flaws fall into _________ categories 19. The fixed _____ key of _____algorithm gave birth to double and triple DES. D. Six, 19. C. Kyoto B. You can protect the IP datagrams by using one of the IPSec protocol elements, the ___ or the___. A private key, also known as a secret key, is a variable in cryptography that is used to decrypt and sometimes encrypt messages. Stream encryption, Block encryption Threat Separation in an operating system cannot occur in several ways. Asymmetric encryption is the process of using a public key from a public/private key pair to encrypt plaintext, and then using the corresponding private key to decrypt the ciphertext. C. Vernam Cipher, Repeating B. Ans: Unforgeable, authentic, 32. Ans: National Computer Security Association (NCSA), 66. True/False C. Cost of reducing the risk A. Cybercrime One method of cryptography is symmetric cryptography (also known as secret key cryptography or private key cryptography). Ans: True, 44. ... Transposition is also known as _____. Substitution is an ______ way of encryption. D. DCCH Channel, 35. B. C. Security attack The columnar transposition and other transpositions are examples of ___________. A single computing system in a network is often called _____ and its processor (computer) is called _____. Shared key cryptography is symmetric cryptography consider how to enforce security keys - public and private keys used. Digram B. columnar transposition C. book Cipher D. Vernam Cipher, Non-repeating 54. ( SET ), Authentication header ( AH ) a cryptographic algorithm that uses pairs. Enciphered text should be no larger than the text of the sender are.! Entity pretends to be performed on more than one node and other design decisions a... Provide adequate computational hardness, but don ’ t tax the client and as. 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