List of practice Questions

Choose the correct meaning of degrees of freedom in statistical concept if \(n\) is number of observations.

Choose the missing term in place of question mark (?) on the basis of the relationship between the word given on the left/right side of the sign of analogy. \[ \text{BOOKS} : 2,15,15,11,19 :: \text{PAPER} : ? \]

In the following figure, square represents students, triangle represents teachers, circle represents professors and rectangle represents Indians.

Which set of letters represents Indians who are not students?

Which of the following Venn diagram best represents the relationship among Americans, Professors and Men?

If a lion has four legs, a monkey has four legs and an elephant has four legs, then how many legs do we have?

If \(X\), \(Y\) and \(Z\) are independent and identically distributed (i.i.d.) random variables, then the mean and variance of \(X\), \(Y\) and \(Z\) are

Sangeetha was facing north-west direction. If she was playing carrom with Sudha in the standard seating pattern, in which direction was Sudha facing?

The correct result of 2's complement addition operation for the following values is ______. \[ 0010 \quad (+2) \] \[ 0011 \quad (+3) \]

Consider the following storage levels and find the correct sequence for the migration of the integer A from larger storage to smaller one. \[ (i)\ \text{Hardware Register} \] \[ (ii)\ \text{Main Memory} \] \[ (iii)\ \text{Cache} \] \[ (iv)\ \text{Magnetic Disk} \]

Kernel mode operation is also called as ________.

Which of the following best suits an operating system?

Which of the following systems are used to represent both positive and negative numbers? \[ \begin{aligned} (a)&\ \text{Sign-and-magnitude} (b)&\ \text{Sign-9's complement} (c)&\ \text{1's complement} (d)&\ \text{Sign-10's complement} \end{aligned} \]

Consider the following statements: \[ \begin{aligned} (i) &\ \text{Perform addition/subtraction on the mantissas} (ii) &\ \text{Set the exponent of the result} (iii) &\ \text{Choose the number with the smaller exponent and shift its mantissa} (iv) &\ \text{Normalize the result} \end{aligned} \] Find the correct add/subtract rule sequence.

Which of the following definition is true for 2's complement subtract operation?

Add the binary numbers \(10011\) and \(1001\) in both decimal and binary forms. The values are:

Consider the following weights in the BCD code. \[ (i)\;4 \qquad (ii)\;8 \qquad (iii)\;1 \qquad (iv)\;2 \] Find the correct sequence from left to right.

A group of eight distinct elements can be represented by a ______ code.

The seven and eight-bit alphanumeric code that is needed to represent more than 64 characters is called ________.

Which of the following operations is NOT typically performed by the Arithmetic Logic Unit?

Which of the following is NOT a Network Operating System?

In an operating system, the interval between the time of submission of a job to the system for processing and the time of first response from the system for the job is known as

Which of the following is NOT the layer of the UNIX operating system?

Which of the following programming language uses objects, classes, inheritance, and polymorphism?

Which metric is most useful for measuring performance when handling floating-point operations involving very large OR very small numbers that require high precision calculations?

Which of the following are the advantages of DBMS? \[ \begin{aligned} (i) &\ \text{Reduced Data Redundancy} (ii) &\ \text{Improved Data Security} (iii) &\ \text{Increased Data Inconsistency} (iv) &\ \text{Backup and Recovery} \end{aligned} \]