Information Security MCQs with Answers
Practice important Information Security MCQs with answers and explanations.
Multiple Choice Questions
Q121: What is an example of a nonrepudiation service?
- A: Ensuring data is confidential
- B: Protecting against unauthorized use
- C: Ensuring message cannot be denied later
- D: Transforming data into an unintelligible form
View Answer
C
Q122: Which service ensures that a system or resource is accessible and usable upon demand?
- A: Data confidentiality
- B: Authentication
- C: Availability
- D: Data integrity
View Answer
C
Q123: What is the primary function of encipherment in security mechanisms?
- A: To assure data integrity
- B: To prevent unauthorized access
- C: To transform data into an unintelligible form
- D: To ensure authentication
View Answer
C
Q124: Which of the following security mechanisms allows the recipient to prove the source and integrity of a data unit?
- A: Encipherment
- B: Authentication exchange
- C: Digital signature
- D: Traffic padding
View Answer
C
Q125: What does traffic padding do in the context of security?
- A: Ensures data integrity
- B: Inserts bits to frustrate traffic analysis
- C: Encrypts data for confidentiality
- D: Controls access to resources
View Answer
B
Q126: Fill in the blank: The OSI Security Architecture defines security _______ to characterize security requirements.
- A: attacks
- B: services
- C: layers
- D: protocols
View Answer
B
Q127: Fill in the blank: _______ ensures that data received is exactly as sent, without modification, insertion, or deletion.
- A: Access control
- B: Authentication
- C: Data integrity
- D: Confidentiality
View Answer
C
Q128: Fill in the blank: In security, _______ is the prevention of unauthorized use of a resource.
- A: Data integrity
- B: Authentication
- C: Access control
- D: Nonrepudiation
View Answer
C
Q129: Fill in the blank: A digital signature is used to prove the _______ and integrity of a data unit.
- A: confidentiality
- B: origin
- C: availability
- D: authenticity
View Answer
B
Q130: Fill in the blank: _______ is used to select secure routes for data transmission and allows routing changes when necessary.
- A: Access control
- B: Routing control
- C: Traffic padding
- D: Encipherment
View Answer
B