Are you a student preparing for an upcoming exam on Cryptography and Network Security? Do you find multiple-choice questions (MCQ) to be an effective study tool in reinforcing your understanding of these complex subjects? If so, then you have arrived at the perfect destination!
In this article, we present a comprehensive set of MCQs on Cryptography and Network Security with answers, designed specifically to help students like you excel in your exams. Whether you are a beginner seeking foundational knowledge or an advanced learner aiming for mastery, this set of MCQs will provide valuable insights and allow you to gauge your understanding of these vital topics.
So let’s dive right in and unlock the secrets of Cryptography and Network Security through this engaging MCQ series!
Cryptography and Network Security MCQ Set-I
1. Any action that compromises the security of information owned by an organization is called ___.
Ans: Security attack
2. ___ is a weakness in the security system.
3. When one entity pretends to be a different entity, we call it ___.
4. ___ means that assets can be modified only by authorized parties or only in authorized ways.
5. Confidentiality can be achieved with ___.
6. A control is an action, device, procedure, or technique that removes or reduces ___.
7. Cryptography is the art of ___.
Ans: secret writing
8. The encrypted text is also called ___.
9. Ciphertext depends on the original plaintext message, the algorithm, and the ___.
10. ___ is a rearrangement of the characters of the plaintext into columns.
Ans: columnar transposition
11. Because a transposition is a rearrangement of the symbols of a message, it is also known as ___.
12. DES stands for ___.
Ans: Data Encryption Standard.
13. The size of the enciphered text should be no larger than the text of the original message. True / False
14. Symmetric algorithms use ___ key(s).
15. ___ enables such an analyst to infer data that should be kept confidential in the database.
Ans: Linear programming.
16. ___ is a person who attempts to break a cypher text message to obtain the original plaintext message.
17. The public key algorithm uses ___.
Ans: Pair of keys (two keys).
18. The columnar transposition and other transpositions are examples of ___.
Ans: Block cyphers.
19. The data encryption algorithm developed by IBM for NBS was based on ___.
20. DES encrypting the plaintext as blocks of ___ bits.
21. The DES algorithm is fixed for a ___ bit key.
22. Triple-DES procedure is C = E (k1, D (k2, E (k1,m))). True /False
23. The ___ is likely to be the commercial-grade symmetric algorithm of choice for years, if not decades.
24. AES is a ___ algorithm.
Ans: symmetric key encryption
25. Asymmetric or public-key encryption systems use two keys, ___, and ___.
Ans: A public key, a private key
26. ___ can be used to distribute other keys.
Ans: Public key
27. Diffie-Hellman Scheme is based on ___.
Ans: Discrete logarithm problem
28. Because the users share a common secret key S, the Diffie-Hellman scheme is an example of an asymmetric key exchange protocol. True/False
29. ___ gives us a reliable means to prove the origin of data or code.
Ans: Digital signatures
30. ___ are ideally suited to digital signatures.
Ans: Public key encryption systems
31. A digital signature must meet two primary conditions ___ and ___.
Ans: Unforgeable, authentic
32. Flaws are first divided into ___ and ___ flaws.
Ans: Intentional, inadvertent
33. The inadvertent flaws fall into ___ categories
34. ___ runs under the user’s authority.
Ans: Malicious code
35. Virus attaches itself to the program and propagates copies of it to other programs. True/ False
36. Controls, encouraged by managers and administrators, are called ___.
Ans: Administrative controls.
37. ___ is often used as a safe way for general users to access sensitive data.
Ans: Trusted software.
38. ___ is an undocumented entry point to a module.
39. ___ is a feature in a program by which someone can access the program other than by the obvious, direct call, perhaps with special privileges.
40. In ___ separation, processes conceal their data and computations in such a way that they are unintelligible to outside processes.
41. Separation in an operating system cannot occur in several ways.
42. The most obvious problem of ___ is preventing one program from affecting the memory of other programs.
43. A key advantage of the group protection approach is its ease of implementation. True/False
44. ___ are mutually agreed-upon code words, assumed to be known only to the user and the system.
45. A key advantage of the group protection approach is its ___.
Ans: Ease of implementation
46. In ___, each piece of information is ranked at a particular sensitivity level, such as unclassified, restricted, confidential, secret, or top secret.
Ans: Military security.
47. The military security model is representative of a more general scheme, called a ___.
48. Unlike regular operating systems, trusted systems incorporate technology to address both ___ and ___
Ans: Features, assurance
49. Memory protection is usually performed by hardware mechanisms, such as ___ or ___.
Ans: paging, segmentation
50. ___ is a characteristic that often grows over time, in accordance with evidence and experience.
51. A single computing system in a network is often called ___ and its processor (computer) is called ___.
Ans: A node, a host
52. The way a network is configured, in terms of nodes and connections, is called the network firewall. True/False
53. To maintain or improve reliability and performance, routings between two endpoints are ___.
54. Impersonation is a more significant threat in a wide area network than in a local one. True/ False
55. ___ can be used to implement a VPN.
56. ___ is another way to segment the network.
Ans: Separate access
57. ___ is a process created to enable users to implement public-key cryptography.
58. You can protect the IP datagrams by using one of the IPSec protocol elements, the ___ or the ___.
Ans: Encapsulating Security Payload (ESP), Authentication Header (AH).
59. The modes of operation of IPSec are ___ and ___.
Ans: Tunnel mode and Transport mode.
60. The security association that applies to a given IPSec header is determined by the packets ___ and the ___ in the packet header.
Ans: Destination IP address, Security parameter index (SPI).
61. The management of SAs can be either manual or through an Internet standard called___.
Ans: Key management protocol
62. ESP seeks to provide ___ and ___ by encrypting data to be protected and placing the encrypted data in the data portion of the IP ESP.
Ans: Confidentiality and Integrity
63. IKE is considered a hybrid protocol because it combines (and supplements) the functions of three other protocols ___ and ___.
Ans: ISAKMP, OAKLEY, and SKEME
64. ___ is a generic protocol that supports many different key exchange methods.
65. The ___ has established a service for assessing the security of commercial websites.
Ans: National Computer Security Association (NCSA)
66. On the upper layer, a protocol for initial authentication and transfer of encryption keys is called ___.
Ans: SSL Handshake Protocol
67. The combination of key exchange, hash, and encryption algorithm for each SSL session is defined as ___.
Ans: Cipher suite
68. SSL uses the ___ for reporting errors and abnormal conditions.
Ans: Alert protocol
69. A ___ is an association between a client and a server.
70. In SET ___ is used to link two messages that are intended for two different recipients.
Ans: Dual Signature.
71. ___ is an open encryption and security specification designed to protect credit card transactions on the Internet.
Ans: Secure Electronic Transaction (SET)
72. Confidentiality and content forgery are often handled by___.
73. Symmetric encryption can protect against forgery by a recipient. True/False
74. Encrypted e-mail messages always carry a digital signature, so the ___ and ___ of the sender are assured.
Ans: Authenticity, non-repudiability
75. DES stands for ___.
Ans: Data Encryption Standard
76. ___ cannot protect against forgery by a recipient, since both sender and recipient share a common key.
Ans: Symmetric encryption
77. The principal difference between S/MIME and PGP is ___.
Ans: Method of key exchange
78. PGP stands for ___.
Ans: Pretty Good Privacy
79. Encrypted e-mail messages always carry a ___, so the authenticity and non-reputability of the sender are assured.
Ans: Digital signature
80. ___ is a device that filters all traffic between a protected or “inside” network and a less trustworthy or “outside” network.
81. A packet filtering gateway controls access to packets based on packet address (source or destination) or ___.
Ans: Specific transport protocol type
82. An application proxy gateway is also called ___.
Ans: Bastion host
83. ___ maintains state information from one packet to another in the input stream.
Ans: Stateful inspection firewall
84. The primary disadvantage of packet filtering routers is a combination of ___ and ___.
Ans: Simplicity, complexity
85. ___ identifies and organizes the security activities for a computing system.
Ans: Security plan
86. ___ is the difference in risk exposure divided by the cost of reducing the risk.
Ans: Risk leverage
87. A security policy should not be comprehensive. True/False
88. Security policy must be realistic. True/False
89. ___ and ___ address external security threats.
Ans: Redundancy, physical controls
90. Risk assessment is a technique supporting ___.
Ans: Security planning
91. ___ is a process that drives the rest of the security administration.
Ans: Security planning
- Customer Relationship Management MCQ with Answers
- What are the top 15 bad habits students should avoid today?
Participating in the MCQ on Cryptography and Network Security with Answers – Set-I has provided valuable insights into the complex world of cybersecurity. By testing your knowledge and understanding of the subject, you have gained a deeper appreciation for the importance of cryptography and network security in today’s digital age.
Remember to continue expanding your knowledge in this field as technology advances and threats evolve. Share this article on social media to encourage others to test their knowledge and promote awareness about the crucial role of cryptography and network security in protecting our online information. Stay informed, stay secure!
Thanks for visiting our website, if you like please share the post MCQ on Cryptography and Network Security with Answers on social media.