Computer Questions and Answers


Computer

Computer


    31) What is the file extension of Ms-Word document?

  • A)Dot
  • B)Doc
  • C)Dom
  • D)Txt
Answer: D

    32) The vast network of computers that connects millions of people all over the world is called—

  • A)LAN
  • B)Web
  • C)Hypertext
  • D)Internet
Answer: D

    33) _______ is a primary key that also appears in another file.

  • A)Physical key
  • B)Primary key
  • C)Foreign key
  • D)Logical key
Answer: C

    34) The software component of an export system that draws conclusion is the

  • A)User interface
  • B)Database
  • C)Inference engine
  • E)I/O controller
Answer: C

    35) ________ is an invalid type of database key.

  • A)Structured primary key
  • B)Atomic primary key
  • C)Primary key

  • D)Composite primary key
Answer: A