McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Computer Science Engineering (CSE) , Information Technology Engineering (IT) .
| 1. |
An algorithm in encryption is called _____________. |
| A. | Algorithm |
| B. | Procedure |
| C. | Cipher |
| D. | Module |
| Answer» C. Cipher | |
| 2. |
The information that gets transformed in encryption is ____________. |
| A. | Plain text |
| B. | Parallel text |
| C. | Encrypted text |
| D. | Decrypted text |
| Answer» A. Plain text | |
| 3. |
In brute force attack, on average half of all possible keys must be tried to achieve success. |
| A. | True |
| B. | False |
| C. | none |
| D. | all |
| Answer» A. True | |
| 4. |
A (n) ______ algorithm transforms ciphertext to plaintext. |
| A. | Encryption |
| B. | Decryption |
| C. | Either (a) or (b) |
| D. | Neither (a) nor (b) |
| Answer» B. Decryption | |
| 5. |
The ________ is the message after transformation. |
| A. | Ciphertext |
| B. | Plaintext |
| C. | Secret-text |
| D. | None of the above |
| Answer» A. Ciphertext | |
| 6. |
Which of the following is not a type of virus? |
| A. | Boot sector |
| B. | Polymorphi |
| C. | C Multipartite |
| D. | Troj |
| Answer» A. Boot sector | |
| 7. |
A computer ________ is a malicious code which self-replicates by copying itself to other programs. |
| A. | Program |
| B. | Virus |
| C. | Application |
| D. | Worm |
| Answer» B. Virus | |
| 8. |
_______________ infects the master boot record and it is challenging and a complex task to remove this virus. |
| A. | Boot Sector Virus |
| B. | Polymorphi |
| C. | C Multipartite |
| D. | Troj |
| Answer» A. Boot Sector Virus | |
| 9. |
______________ infects the executable as well as the boot sectors. |
| A. | Non-resident virus |
| B. | Boot Sector Virus |
| C. | Polymorphic Virus |
| D. | Multipartite Virus |
| Answer» D. Multipartite Virus | |
| 10. |
Trojan creators do not look for _______________. |
| A. | Deleting Data |
| B. | Protecting Data |
| C. | Modifying Data |
| D. | Copying Data |
| Answer» B. Protecting Data | |
| 11. |
Once activated __________ can enable ____________to spy on the victim, steal their sensitive information & gain backdoor access to the system. |
| A. | Virus, Cyber-Criminals |
| B. | Malware, Penetration Testers |
| C. | Trojans, Cyber-Criminals |
| D. | Virus, Penetration Testers |
| Answer» C. Trojans, Cyber-Criminals | |
| 12. |
During a DOS attack, the regular traffic on the target _____________ will be either dawdling down or entirely interrupted. |
| A. | Network |
| B. | System |
| C. | Website |
| D. | Router |
| Answer» C. Website | |
| 13. |
The intent of a __________ is to overkill the targeted server’s bandwidth and other resources of the target website. |
| A. | Phishing attack |
| B. | DoS attack |
| C. | Website attack |
| D. | MiTM attack |
| Answer» B. DoS attack | |
| 14. |
In ________ some cyber-criminals redirect the legitimate users to different phishing sites and web pages via emails, IMs, ads and spyware. |
| A. | URL Redirection |
| B. | DOS |
| C. | Phishing |
| D. | MiTM attack |
| Answer» C. Phishing | |
| 15. |
Trojan creators do not look for _______________. |
| A. | Credit card information |
| B. | Confidential data |
| C. | Important documents |
| D. | Securing systems with such programs |
| Answer» D. Securing systems with such programs | |
| 16. |
1. When one participant in a communication pretends to be someone else, it is called _________? |
| A. | Virus Attacks |
| B. | Fire Attacks |
| C. | Data Driven Attacks |
| D. | Masquerade |
| Answer» D. Masquerade | |
| 17. |
________ is a term used to describe a phishing attack that is specifically aimed at wealthy, powerful, or prominent individuals. Generally CEO’s and important celebrities. |
| A. | Message Authentication Code |
| B. | Steganography |
| C. | Whale phishing |
| D. | A cipher |
| Answer» C. Whale phishing | |
| 18. |
Compromising confidential information comes under _________. |
| A. | Bug |
| B. | Threat |
| C. | Vulnerability |
| D. | Attack |
| Answer» B. Threat | |
| 19. |
When an attacker sends unsolicited communication, it is an example of_____. |
| A. | Spoofing |
| B. | Spamming |
| C. | Crackers |
| D. | Sniffers |
| Answer» B. Spamming | |
| 20. |
Masquerading is _______. |
| A. | Attempting to hack a system through backdoors to an operating system or application. |
| B. | Pretending to be an authorized user |
| C. | Always done through IP spoofing |
| D. | Applying a subnet mask to an internal IP range |
| Answer» B. Pretending to be an authorized user | |
| 21. |
Integrity is protection of data from all of the following except ________. |
| A. | Unauthorized changes |
| B. | Accidental changes |
| C. | Data analysis |
| D. | Intentional manipulation |
| Answer» C. Data analysis | |
| 22. |
A security program cannot address which of the following business goals? |
| A. | Accuracy of information |
| B. | Change control |
| C. | User expectations |
| D. | Prevention of fraud |
| Answer» A. Accuracy of information | |
| 23. |
The absence of a fire-suppression system would be best characterized as_______. |
| A. | Exposure |
| B. | Threat |
| C. | Vulnerability |
| D. | Risk |
| Answer» C. Vulnerability | |
| 24. |
Asymmetric key cryptography is used for all of the following except_______. |
| A. | Encryption of data |
| B. | Access control |
| C. | Nonrepudiation |
| D. | Steganography |
| Answer» D. Steganography | |
| 25. |
Firewalls are to protect against________. |
| A. | Virus Attacks |
| B. | Fire Attacks |
| C. | Data Driven Attacks |
| D. | Unauthorized Attacks |
| Answer» D. Unauthorized Attacks | |
| 26. |
The first computer virus is__________. |
| A. | The famous |
| B. | HARLIE |
| C. | PARAM |
| D. | Creeper |
| Answer» D. Creeper | |
| 27. |
_______ is the practice and precautions taken to protect valuable information from unauthorized access, recording, disclosure or destruction. |
| A. | Network Security |
| B. | Database Security |
| C. | Information Security |
| D. | Physical Security |
| Answer» C. Information Security | |
| 28. |
From the options below, which of them is not a vulnerability to information security? |
| A. | Without deleting data, disposal of storage media |
| B. | Latest patches and updates not done |
| C. | Floo |
| D. | D Unchanged default password |
| Answer» C. Floo | |
| 29. |
Possible threat to any information cannot be ________________. |
| A. | Ignored |
| B. | Protected |
| C. | Transferre |
| D. | D Reduced |
| Answer» A. Ignored | |
| 30. |
A _________ can gain access illegally to a system if the system is not properly tested in scanning and gaining access phase. |
| A. | Security officer |
| B. | Malicious hacker |
| C. | Security auditor |
| D. | Network analyst |
| Answer» B. Malicious hacker | |
| 31. |
_________________ is the process or mechanism used for converting ordinary plain text into garbled non-human readable text & vice-versa. |
| A. | Malware Analysis |
| B. | Exploit writing |
| C. | Reverse engineering |
| D. | Cryptography |
| Answer» D. Cryptography | |
| 32. |
When plain text is converted to unreadable format, it is termed as _____________. |
| A. | Rotten text |
| B. | Raw text |
| C. | Cipher-text |
| D. | Cipher |
| Answer» C. Cipher-text | |
| 33. |
______________ is a means of storing & transmitting information in a specific format so that only those for whom it is planned can understand or process it. |
| A. | Malware Analysis |
| B. | Cryptography |
| C. | Reverse engineering |
| D. | Exploit writing |
| Answer» B. Cryptography | |
| 34. |
Cryptography can be divided into ______ types. |
| A. | 5 |
| B. | 2 |
| C. | 7 |
| D. | 3 |
| Answer» B. 2 | |
| 35. |
Data which is easily readable & understandable without any special algorithm or method is called _________________. |
| A. | Cipher-text |
| B. | Plain text |
| C. | Raw text |
| D. | Encrypted text |
| Answer» B. Plain text | |
| 36. |
Plain text are also called _____________. |
| A. | Encrypted text |
| B. | Clear-text |
| C. | Raw text |
| D. | Cipher-text |
| Answer» C. Raw text | |
| 37. |
There are ________ types of cryptographic techniques used in general. |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» B. 3 | |
| 38. |
Conventional cryptography is also known as _____________ or symmetric-key encryption. |
| A. | Secret-key |
| B. | Public key |
| C. | Protected key |
| D. | Primary key |
| Answer» A. Secret-key | |
| 39. |
Data Encryption Standard is an example of a _____________ cryptosystem. |
| A. | Conventional |
| B. | Public key |
| C. | Hash key |
| D. | Asymmetric-key |
| Answer» A. Conventional | |
| 40. |
_______ Cryptography deals with traditional characters, i.e., letters & digits directly. |
| A. | Latest |
| B. | Asymmetri |
| C. | C Classic |
| D. | Modern |
| Answer» C. C Classic | |
| 41. |
____________ Cryptography operates on binary-bit series and strings. |
| A. | Modern |
| B. | Classi |
| C. | C Traditional |
| D. | Primitive |
| Answer» A. Modern | |
| 42. |
____________ is a mono-alphabetic encryption code wherein each & every letter of plaintext is replaced by another letter in creating the cipher-text. |
| A. | Polyalphabetic Cipher |
| B. | Caesar Cipher |
| C. | Playfair Cipher |
| D. | Monoalphabetic Cipher |
| Answer» B. Caesar Cipher | |
| 43. |
________ is the concept that tells us about the replacement of every alphabet by another alphabet and the entire series gets ‘shifted’ by some fixed quantity. |
| A. | Rolling Cipher |
| B. | Shift Cipher |
| C. | Playfair Cipher |
| D. | Block Cipher |
| Answer» B. Shift Cipher | |
| 44. |
In Playfair cipher, at first, a key table is produced. That key table is a 5 by 5 grid of alphabets which operates as the key to encrypt the plaintext. |
| A. | Rolling Cipher |
| B. | Shift Cipher |
| C. | Playfair Cipher |
| D. | Block Cipher |
| Answer» C. Playfair Cipher | |
| 45. |
______________ employs a text string as a key that is implemented to do a series of shifts on the plain-text. |
| A. | Shift Cipher |
| B. | Block Cipher |
| C. | Playfair Cipher |
| D. | Vigenere Cipher |
| Answer» D. Vigenere Cipher | |
| 46. |
The ________________ has piece of the keyword that has the same length as that of the plaintext. |
| A. | One-time pad |
| B. | Hash functions |
| C. | Vigenere Cipher |
| D. | Block Cipher |
| Answer» A. One-time pad | |
| 47. |
In _______________ the plain-text is processed 1-bit at a time & a series of actions is carried out on it for generating one bit of cipher-text. |
| A. | Vigenere Cipher |
| B. | Block Cipher |
| C. | Stream cipher |
| D. | One-time pad |
| Answer» C. Stream cipher | |
| 48. |
In _____________ a sequence of actions is carried out on this block after a block of plain-text bits is chosen for generating a block of cipher-text bits. |
| A. | Hash functions |
| B. | Vigenere Cipher |
| C. | One-time pa |
| D. | D Block Cipher |
| Answer» D. D Block Cipher | |
| 49. |
The procedure to add bits to the last block is termed as _________________. |
| A. | Padding |
| B. | Hashing |
| C. | Tuning |
| D. | Decryption |
| Answer» A. Padding | |
| 50. |
Which of the following is not an example of a block cipher? |
| A. | DES |
| B. | Caesar cipher |
| C. | Twofish |
| D. | IDEA |
| Answer» B. Caesar cipher | |
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