Tag: technology

Questions Related to technology

The static member functions have a class scope and they have access to the 'this' pointer of the class.
technology programming languages

  1. True

  2. False

Show answer
Correct Option: B

Types of Polymorphism
technology programming languages

  1. Operator overloading

  2. Virtual functions

  3. Virtual base class

  4. Function overloading

Show answer
Correct Option: A,B,D

Encapsulation is the process of combining data and functions into a single unit called class.
technology programming languages

  1. True

  2. False

Show answer
Correct Option: A

Which of the following statements are true?a. By default,all members of structure are private.b.new and delete operator can be overlaodedc.friend fucntion can overload [],(),= operators.
technology programming languages

  1. a only

  2. a and b

  3. b only

  4. none of the above

Show answer
Correct Option: C

Default return type of functions in C++ is
technology programming languages

  1. Void

  2. Int

  3. Bool

  4. none of the above

Show answer
Correct Option: B
  1. With SQL, how do you select all the records from a table named "Persons" where the value of the column "FirstName" starts with an "a"?
technology databases

  1. SELECT * FROM Persons WHERE FirstName='%a%'

  2. SELECT * FROM Persons WHERE FirstName='a'

  3. SELECT * FROM Persons WHERE FirstName LIKE '%a'

  4. SELECT * FROM Persons WHERE FirstName LIKE 'a%'

Show answer
Correct Option: D
  1. With SQL, how do you select all the records from a table named "Persons" where the "FirstName" is "Peter" and the "LastName" is "Jackson"?
technology databases

  1. SELECT * FROM Persons WHERE FirstName<>'Peter' AND LastName<>'Jackson'

  2. SELECT FirstName='Peter', LastName='Jackson' FROM Persons

  3. SELECT * FROM Persons WHERE FirstName='Peter' AND LastName='Jackson'

  4. None

Show answer
Correct Option: C
  1. With SQL, how do you select all the records from a table named "Persons" where the "LastName" is alphabetically between (and including) "Hansen" and "Pettersen"?
technology databases

  1. SELECT * FROM Persons WHERE LastName>'Hansen' AND LastName

  2. SELECT * FROM Persons WHERE LastName BETWEEN 'Hansen' AND 'Pettersen'

  3. SELECT LastName>'Hansen' AND LastName

  4. None

Show answer
Correct Option: B
  1. Which SQL keyword is used to sort the result-set? SORT BY ORDER BY SORT ORDER
technology databases

  1. SORT BY

  2. ORDER BY

  3. SORT

  4. ORDER

Show answer
Correct Option: B
  1. With SQL, how can you return all the records from a table named "Persons" sorted descending by "FirstName"?
technology databases

  1. SELECT * FROM Persons SORT BY 'FirstName' DESC

  2. SELECT * FROM Persons SORT 'FirstName' DESC

  3. SELECT * FROM Persons ORDER BY FirstName DESC

  4. SELECT * FROM Persons ORDER FirstName DES

Show answer
Correct Option: C