Description : . Which of the following is a comparison operator in SQL? (A) = (B) LIKE (C) BETWEEN (D) All of the above
Last Answer : D) All of the above
Description : What error will be generated if a space is given between the logical AND operator (&&)? Will it be a compile-time or a run-time error?
Last Answer : Example: if(5>2 & & 6
Description : State True or False. i) While overloading operators new operator can be overloaded. ii) The binary operator such as +, -, * and must explicitly return a value. A) True, True B) True, False C) False, True D) False, False
Last Answer : C) False, True
Description : Which of the following operates cannot be overloaded? i) Size of operator (sizeof) ii) Scope resolution Operator iii) Conditional operator (?:) iv) Assignment Operator (=) A) i, ii, iii only B) ii, iii, iv only C) i, iii, iv only D) all i, ii, iii, iv
Last Answer : A) i, ii, iii only
Description : The dereferencing operator ……… is used when the object itself is used width in the member pointer. A) ->* B) .* C) Any of the above D) None of the above
Last Answer : B) .*
Description : The dereferencing operator ………….. is used to access a member when we use pointers to both the object and the member. A) ->* B) .* C) Any of the above D) None of the above
Last Answer : A) ->*
Description : The ……………. Operator is known as insertion operator. A) >> B) > C)
Last Answer : C)
Description : Some of the C++ operators cannot overloaded which are i) Member access operators (. And .*) ii) Conditional operator (? :) iii) Scope resolution operator (: :) iv) Size operator (sizeof) A) only i, ii and iii B) only ii, iii and iv C) only ii and iv D) All i, ii, iii and iv
Last Answer : D) All i, ii, iii and iv
Description : Match the following a) : : i) Pointer to member declarator b) : :* ii) Pointer to member operator c) ->* iii) Scope resolution operator A) a-ii, b-iii, c-i B) a-iii, b-i, c-ii C) a-i b-ii, c-iii D) a-iii, b-ii, c-i
Last Answer : B) a-iii, b-i, c-ii
Description : Hierarchy decides which operator A) is most important B) is used first C) is fastest D) Operates on largest numbers
Last Answer : B) is used first
Description : . Costs for a computer based information system include the salaries of the system analysts and computer programmers. costs for a computer based information system include the ... ) Development, Development B) Development, Operating C) Operating, Development C) Operating, Operating
Last Answer : B) Development, Operating
Description : Which of the following is not a binary operator in relational algebra? A) Join B) Semi-Join C) Assignment D) Project
Last Answer : D) Project
Description : ………………….. operator is basically a join followed by a project on the attributes of first relation. A) Join B) Semi-Join C) Full Join D) Inner Join
Last Answer : B) Semi-Join
Description : Select operator is not a unary operator. ii) Project operator chooses subset of attributes or columns of a relation. A) i-True, ii-False B) i-True, ii-True C) i-False, ii-True D) i-False, ii-False
Last Answer : C) i-False, ii-True
Description : The ............ operator preserves unmatched rows of the relations being joined. A) Inner join B) Outer join C) Union D) Union join
Last Answer : B) Outer join
Description : Cartesian product in relational algebra is (A) a Unary operator. (B) a Binary operator. (C) a Ternary operator. (D) not defined.
Last Answer : (B) a Binary operator.
Description : What is the output of the following piece of code when executed in Python shell? >>> a=("Check")*3 >>> a a) (‘Check’,’Check’,’Check’) b) * Operator not valid for tuples c) (‘CheckCheckCheck’) d) Syntax erro
Last Answer : c) (‘CheckCheckCheck’)
Description : What is the output of the following code? >>> a=(1,2,(4,5)) >>> b=(1,2,(3,4)) >>> a
Last Answer : a) False
Description : A fuzzy set A on R is ................. iff A(λx1 + (1 – λ)x2) ≥ min [A(x1), A(x2)] for all x1, x2 ∈ R and all λ ∈ [0, 1], where min denotes the minimum operator. (A) Support (B) α-cut (C) Convex (D) Concave
Last Answer : (C) Convex
Description : Refer the points as listed below: (a) What are the operator precedence rules ? (b) What are the operator associativity rules ? (c) What is the order of operand evaluation ? (d) Are there restrictions on operand evaluation side effects ? ... (d) (C) (a), (b) and (d) (D) (a), (b), (c) and (d)
Last Answer : (D) (a), (b), (c) and (d)
Description : The “PROJECT” operator of a relational algebra creates a new table that has always (A) More columns than columns in original table (B) More rows than original table (C) Same number of rows as the original table (D) Same number of columns as the original table
Last Answer : (C) Same number of rows as the original table
Description : A Boolean operator Ө is defined as follows: 1Ө1=1, 1Ө0=0, 0Ө1=0 and 0Ө0=1 What will be the truth value of the expression (xӨy)Өz = xӨ(yӨz)? (A) Always false (B) Always true (C) Sometimes true (D) True when x, y, z are all true
Last Answer : (B) Always true
Description : The mean-end analysis process centers around the detection of differences between the current state and the goal state. Once such a difference is isolated, an operator that can reduce the difference ... (A) backward planning (B) goal stack planning (C) operator subgoaling (D) operator overloading
Last Answer : (C) operator subgoaling
Description : A byte addressable computer has a memory capacity of 2 m Kbytes and can perform 2 n operations. An instruction involving 3 operands and one operator needs a maximum of (A) 3m bits (B) m + n bits (C) 3m + n bits (D) 3m + n + 30 bits
Last Answer : (D) 3m + n + 30 bits
Description : Which of the following statements is correct? (A) Every class containing abstract method must not be declared abstract. (B) Abstract class cannot be directly initiated with ‘new’ operator. (C) Abstract class cannot be initiated. (D) Abstract class contains definition of implementation.
Last Answer : Answer: B,C
Description : compiler optimization, operator strength reduction uses mathematical identities to replace slow math operations with faster operations. Which of the following code replacements is an illustration of operator strength reduction? (A) Replace P + ... * P or Replace 3 + 4 by 7. (B) Replace P * 32 by P
Last Answer : (B) Replace P * 32 by P
Description : Consider the following statements regarding relational database model: (a) NULL values can be used to opt a tuple out of enforcement of a foreign key. (b) Suppose that table T has only one candidate key. If Q is in 3NF, then it is ... true. (C) (b) and (c) are true. (D) (a), (b) and (c) are true.
Last Answer : (D) (a), (b) and (c) are true.
Description : Given two sorted list of size 'm' and 'n' respectively. The number of comparison needed in the worst case by the merge sort algorithm will be (A) m x n (B) max (m, n) (C) min (m, n) (D) m + n – 1
Last Answer : (D) m + n – 1