List of top Computer Science Questions

Consider the following four words, out of which three are alike in some manner and one is different. 

(A) Arrow 
(B) Missile 
(C) Sword 
(D) Bullet 
Choose the combination that has alike words.

What is the result of the following operation defined by IEEE754?
\[ \text{(NaN == NaN)} \]
Which of the following statement is true about IEEE754 representation of +0 and -0?
Minimum number of 2:1 Multiplexers required to design a 16:1 Multiplexer is?

The following circuit generates the same output as? 

Match List-I with List-II.\[\begin{array}{|c|c|}\hline \textbf{J K Flip Flop Inputs} & \textbf{Next State} \\ \hline (A)\ 0\ 0 & (I)\ \text{No Change} \\ \hline (B)\ 0\ 1 & (II)\ \text{Reset} \\ \hline (C)\ 1\ 0 & (III)\ \text{Set} \\ \hline (D)\ 1\ 1 & (IV)\ \text{Toggle} \\ \hline \end{array}\]
Consider the following statements.
(A) Combinational logic circuits do not have memory, while sequential logic circuits have memory elements.
(B) Sequential logic circuits depend only on the current inputs, while combinational logic circuits depend on both current and past inputs.
(C) Flip-flops and latches are examples of combinational logic circuits.
(D) Multiplexer is an example of combinational logic circuit.
Arrange the following steps in the correct order to understand the functioning of a 3 to 8 line decoder.
(A) The encoder enable input is set to 1.
(B) The decoder activates one of its 8 output lines based on the input code.
(C) The input binary code is applied to the decoder.
(D) The decoder converts the 3-bit binary input into 8 possible outputs.

Perform the arithmetic addition of the two decimal numbers given in List-I using the signed-complement system. Match the corresponding output of List-I with binary number representation given in List-II. 
\[\begin{array}{|c|c|}\hline \text{List-I} & \text{List-II} \\ \hline \text{(A) +6, +13} & \text{(I) 00000111} \\ \hline \text{(B) -6, +13} & \text{(II) 00010011} \\ \hline \text{(C) +6, -13} & \text{(III) 11101011} \\ \hline \text{(D) +6, -13} & \text{(IV) 11111101} \\ \hline \end{array}\]

Consider the following types of memories.
(A) Hard Disk Drive (HDD)
(B) Cache Memory
(C) Random Access Memory (RAM)
(D) Registers
Arrange the above memories according to their access speed (from fastest to slowest):

Consider the following Karnaugh Map (K-map). Minimal Function generated by this Karnaugh map is: 

Given the index i of a node in a heap, we can not compute:

The statements of pseudocode for searching the first element with key k in the linked list L are given below. Arrange them in the correct order. 
(A) while (x != NIL and x.key != k) 
(B) x = L.head 
(C) x = x.next 
(D) return x 

Which of the following is not an application of DFS?
Consider a typical process P in the critical section. Arrange the following statements of code to make a valid general structure.
(A). Critical section
(B). Remainder section
(C). Entry section
(D). Exit section

Complete the following statement by choosing the correct option. 

For a deadlock to occur, the four conditions namely Mutual Exclusion, Hold and Wait, No preemption, Circular wait __________. 
 

Match List-I with List-II:
\[\begin{array}{|c|c|} \hline \textbf{List-I} & \textbf{List-II} \\ \hline \text{(A)}\ \lim_{x\to 0}(1+2x)^{\frac{1}{x}} & \text{(I)}\ e^{6} \\ \hline \text{(B)}\ \lim_{x\to \infty}\left(1+\frac{1}{x}\right)^{x} & \text{(II)}\ e^{2} \\ \hline \text{(C)}\ \lim_{x\to 0}(1+5x)^{\frac{2}{x}} & \text{(III)}\ e \\ \hline \text{(D)}\ \lim_{x\to \infty}\left(1+\frac{3}{x}\right)^{2x} & \text{(IV)}\ e^{5} \\ \hline \end{array}\] Choose the correct answer from the options given below:

If \(\; f(x)=\begin{cases} x\sin\!\left(\tfrac{1}{x}\right), & x\neq 0 \\[6pt] 0, & x=0 \end{cases}, \; \text{then } f(x) \text{ is}\)
 

If \( x^2 = -16y \) is an equation of a parabola, then: 

(A) Directrix is \( y = 4 \) 
(B) Directrix is \( x = 4 \) 
(C) Co-ordinates of focus are \( (0, -4) \) 
(D) Co-ordinates of focus are \( (-4, 0) \) 
(E) Length of latus rectum is 16 
 

The points \( (K, 2 - 2K), (-K + 1, 2K) \) and \( (-4 - K, 6 - 2K) \) are collinear if: 

(A) \( K = \frac{1}{2} \) 
(B) \( K = -\frac{1}{2} \) 
(C) \( K = \frac{3}{2} \) 
(D) \( K = -1 \) 
(E) \( K = 1 \) 
 

If \( x = \left( 2 + \sqrt{3} \right)^3 + \left( 2 - \sqrt{3} \right)^{-3} \) and \( x^3 - 3x + k = 0 \), then the value of \( k \) is:

Match List-I with List-II.\[\begin{array}{|c|c|} \hline \textbf{List-I} & \textbf{List-II} \\ \hline (A) \; \text{If } A = \begin{bmatrix} 1 & 0 \\ 0 & -1 \end{bmatrix}, \; \Delta \text{ is} & (I) \; 0 \\ \hline (B) \; \text{If } A = \begin{bmatrix} 2 & 1 \\ 4 & 2 \end{bmatrix}, \; \Delta \text{ is} & (II) \; 1 \\ \hline (C) \; \text{If } A = \begin{bmatrix} 1 & 0 \\ 0 & 2 \end{bmatrix}, \; |A^{-1}| \text{ is} & (III) \; -2 \\ \hline (D) \; \text{If } A = \begin{bmatrix} 1 & 1 \\ 1 & 2 \end{bmatrix}, \; a \text{ is} & (IV) \; 2 \\ \hline \end{array}\]
From the given sets, which is an infinite set:

Which figure comes next in the given series below?

In the following question, there is a certain relationship between two given words on one side of "::" and one word is given on another side of "::" while another word is to be found from the given options, having the same relation with this word as the words of the given pair bear. Choose the correct option to replace the '?'. Milk : Emulsion :: Butter : ?