Computer Awareness for Upcoming Exams Set 75

Computer Questions Dena Bank PO PGDBF, NICL AO, NIACL Assistant/AO, BoB PO, IBPS PO, Bank of India, IBPS Clerk, BOI, and other competitive exams.

1. Which operation performs a set union of two ‘similarly structured’ tables?
   A) union
   B) select
   C) product
   D) intersect
   E) none of these
   
   View Answer

    Option A
   Explanation:
   Union operation performs a set union of two ‘similarly structured’ tables.
2. A __________ is an abstract model that describes, how the data are organised and represented.
   A) data model
   B) instances
   C) schema
   D) database
   E) DBMS
   
   View Answer

    Option A
   Explanation:
   Data model is an abstract model that describes, how the data are organized and represented.
3. A __________ is a property of the entire relation, rather than of the individual tuples in which each tuple is unique.
   A) rows
   B) key
   C) attributes
   D) fields
   E) none of these
   
   View Answer

    Option B
   Explanation: 
   Key is a property of the entire relation (relation is a table).
4. In relational database, a field is a:
   A) label
   B) table of information
   C) group of related records
   D) category of information
   E) None of these
   
   View Answer

    Option D               
   Explanation:
   A field is category of information.
5. _________ is a telecommunications network which allows computers to exchange data.
   A) Computer network
   B) OCR
   C) JVM
   D) control panel
   E) none of these
   
   View Answer

    Option A
   Explanation:
   Computer network: A computer network is a set of computers connected together for the purpose of sharing resources. The most common resource shared today is through the Internet.
6. Who coined the term computer virus?
   A) MCfee
   B) Smiths
   C) Frederick cohen
   D) Norton
   E) None of these
   
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    Option C Explanation:
   Frederick B. Cohen is an American computer scientist and best known as the inventor of computer virus defense techniques. He coined the term and gave definition to “computer virus”.
7. Which of the following statement is closely related to Hypertext?
   A) Text stored in the memory of the computer
   B) A system of managing textual Information by creating associations between different documents
   C) Special text used in Internet developing package
   D) Text displayed on the screen of the computer
   E) None of these
   
   View Answer

    Option B
   Explanation:
   Hypertext is text which contains links to other texts.
8. Which of the following option best refer the purpose of an application program?
   A) Meet specific user needs
   B) Make equivalent run better
   C) Allow the operating system to control resources better
   D) Convert program written in high-level language to machine level language
   E) none of these
   
   View Answer

    Option A
   Explanation:
   Application Programs cater to specific need of the user as they are designed to accomplish a particular type of task or specific purpose.
9. What is a popular program for view, create, manipulate, print and manage text document that can be read on both the OS – Windows and Macintosh?
   A) VMWare
   B) QuarkXPress
   C) Adobe Acrobat
   D) VLC
   E) None of these
   
   View Answer

    Option C
   Explanation:
   Adobe Reader is used to read PDF files that can be read on both Windows and Macintosh OS.
10. Which of the following is easiest software development process model?
    A) Water fall model
    B) Prototyping
    C) Interative Enhancement
    D) Spiral model
    E) None of these
    
    View Answer

     Option A
    Explanation:
    The waterfall model of software development in the easiest approach used for software development . It is a linear sequential flow in which progress is seen as flowing steady downloads through the phase of software implementation. This means that any please in the development process begins only if the previous phase is complete.

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