Nt1330 Unit 51 Quiz
51. Which is used to preserve the reliability of a document or a message.
a) Message digest
b) Encryption of message
c) Encrypted message
d) None of the mentioned
Answer: c
52. What is the primary criteria of a hash function?
a) Two
b) Three
c) Four
d) None of the mentioned
Answer: b
53. What is the main limitation of Hierarchical Database?
a) Unable to hold much data
b) Limited flexibility in accessing data
c) Overhead associated with maintaining indexes
d) Organization of data in hierarchical structure is very difficult.
Answer: b
54. Which property ensures uniqueness of data?
a) Identifier
b) Foreign key
c) Primary key
d) Symmetric key
Answer: c
55. Choose the separation of the data definition from the program?
a) Data dictionary
b)
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