Lakshya Education MCQs

Question: Data encryption techniques are particularly useful for
A.reducing storage space requirements
B.improving data integrity
C.protecting data in data communication systems
D.All of the above
E.None of the above
Answer: Option C

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More Questions on This Topic :

Question 1. It is more accurate to define a _____ as a variety of different record types that are treated as a single unit
  1.    Database
  2.    Table
  3.    Record
  4.    Flat File
  5.    None of the above
Answer: Option A
Question 2. A logical schema
  1.    is the entire database
  2.    is a standard way of organizing information into accessible parts
  3.    describes how data is actually stored on disk
  4.    All of the above
  5.    None of the above
Answer: Option B
Question 3. Queries to a database
  1.    are written in English
  2.    can use aggregate functions like SUM and COUNT
  3.    both (a) and (b)
  4.    All of the above
  5.    None of the above
Answer: Option B
Question 4. A data dictionary doesn't provide information about:
  1.    where data is located
  2.    the size of the disk storage device
  3.    It allows a many-to-many relationship
  4.    It is conceptually simple
  5.    It will be the dominant data base of the future
Answer: Option B
Question 5. Which of the following is not an advantage of the data-base approach?
  1.    elimination of the data redundancy
  2.    ability to associate related data
  3.    increased security
  4.    program/data independence
  5.    All of the above are advantages
Answer: Option E
Question 6. What is the abbreviation used for a software package that permits the users to create, retrieve and maintain records in a database?
  1.    DASD
  2.    FMS
  3.    EMMS
  4.    DBMS
  5.    None of the above
Answer: Option D

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