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Jharkhand Academic Council - Year 2016 Computer Science - Class XII ========================= Multiple Choice Questions: a. Header file have the file extension. I. .h II. .he III. .hea IV. .head Ans: I b. A row in a relation is called I. Data II. Tuple III. Domain IV. None of these Ans: II c. A Token is – I. Keyword II. An identifier III. Smallest unit of a program IV. Operator Ans: III d. The condition on while loop is checked on- I. Middle II. Top III. Bottom IV. All of these Ans: II e. Destructor is a – I. Member function II. Overloaded III. Constructor IV. None of these Ans: I f. Base class is – I. Normal class II. Derived class III. Child class IV. All of these Ans: I g. In private inheritance, a protected data member of the base class will be treated in a derived class as – I. Public II. Protected III. Private IV. None of these Ans: III h. Binary search uses – I. Divide & conquer method II. Back tracking approach III. Heuristic search IV. Greedy approach Ans: I i. A linked list is a collection of data elements, called – I. Array II. Pointer III. Nodes IV. All of these Ans: III j. The elements are inserted in a queue from the end is called – I. Top II. Middle III. Front IV. Rear Ans: IV k. Attribute in a relation is called I. Record II. Column III. Tuple IV. None of these Ans: II l. Normalization is used to reduce – I. Data redundancy II. Data inconsistency III. Data security IV. None of these Ans: I m. Identity law states that – I. X + X’ = 1 II. 0 + X = X III. X + X = X IV. X.X = X Ans: I n. The solution of X+XY is equal to – I. X II. X’ III. X+Y IV. None of these Ans: I o. A small file that a web server can store on your machine is – I. Hacker II. Cracker III. Firewall IV. Cookies Ans: IV p. Network device (s) is/are- I. Ethernet card II. Hub III. Router IV. All of these Ans: IV

Jharkhand Academic Council      -  Year 2017 Computer Science        -  Class XII                                   ========================= Multiple Choice Questions: a.  While loop checks the condition on …………… I.  Top II.  Bottom III.  Middle IV.  None of these Ans: I b.  A keyword is – I.  An identifier II.  In lower case alphabets III.  Reserved for instructions only IV.  None of these Ans: III c.  If a class X inherits from class Y, then Y is called ….. of X I.  Super Class II.  Sub class III.  Abstract class IV.  None of these Ans: I d.  A set of Relational Operators are I.  +, -, *, /, % II.  >, <, >=, <=, ==, != III.  &&, ||, ! IV.  ? : Ans: II e.  An inline function is – I.  Prefixed with keyword inline II.  Declared and defined inside the class III.  Prefixed with inline on the header and defined outside the class IV.  All of these Ans: IV f.  Constructor is- I.  Are special function II.  Have the same name as that of the class III.  Have no return type IV.  All of these Ans: IV g.  In protected inheritance, a public data member of the base class will be treated in a derived class as – I.  Public II.  Private III.  Protected IV.  None of these Ans: III h.  In a queue, insertion is done at I.  Rear II.  Front III.  I and II both IV.  None of these Ans: I i.  FIFO means- I.  First In First Out II.  Fast In First Out III.  Fast In Fast Out IV.  None of these Ans: I j.  Arranging elements of an array in specific order is called I.  Array II.  Record III.  Pointers IV.  None of these Ans IV (called Sorting) k.  Number of tuples in a relation is called I.  Degree II.  Cardinality III.  Attributes IV.  None of these Ans: II l.  The duplication of data is known as I.  Data redundancy II.  Data inconsistency III.  Data security IV.  None of these Ans: I m.  How many gates would be required to implement the following Boolean expression after simplification? XY+X(X+Z)+Y(X+Z) I.  1 II.  2 III.  4 IV.  5 Ans:  II n.  The solution of X.(X+Y) is equal to I.  X II.  X’ III.  X+Y IV.  None of these Ans: I o.  Which of the following layers is not in OSI model? I.  Physical Layer II.  Internet Layer III.  Network Layer IV.  Transport Layer Ans: II p.  Web browser is I.  Google chrome II.  Firefox III.  Internet Explorer IV.  All of these Ans: IV

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