# ISRO CSE 2007

 Question 1
The Boolean expression $Y=(A+\bar{B}+\bar{A}B)\bar{C}$ is given by
 A $A\bar{C}$ B $B\bar{C}$ C $\bar{C}$ D AB
Digital Logic   Boolean Algebra
Question 1 Explanation:
 Question 2
The circuit shown in the following figure realizes the function.

 A $(\overline{A+B}+C)(\bar{D}\bar{E})$ B $(\overline{A+B}+C)(D\bar{E})$ C $(A+ \overline{B+C})(\bar{D}E)$ D $(A+ B+\bar{C})(\bar{D} \bar{E})$
Digital Logic   Boolean Algebra
Question 2 Explanation:
 Question 3
The circuit shown in the given figure is a

 A full adder B full subtracter C shift register D decade counter
Digital Logic   Boolean Algebra
Question 3 Explanation:
 Question 4
When two numbers are added in excess-3 code and the sum is less than 9, then in order to get the correct answer it is necessary to
 A subtract 0011 from the sum B add 0011 to the sum C subtract 0110 from the sum D add 0110 to the sum
Digital Logic   Number System
Question 4 Explanation:
 Question 5
The characteristic equation of an SR flip-flop is given by :
 A $Q_{n+1}=S+RQ_n$ B $Q_{n+1}=R\bar{Q}_n + \bar{S}Q_n$ C $Q_{n+1}=\bar{S}+RQ_n$ D $Q_{n+1}=S+\bar{R}Q_n$
Digital Logic   Sequential Circuit
Question 5 Explanation:
 Question 6
A graph with n vertices and n-1 edges that is not a tree, is
 A Connected B Disconnected C Euler D A circuit
Discrete Mathematics   Graph Theory
Question 6 Explanation:
 Question 7
If a graph requires k different colours for its proper colouring, then the chromatic number of the graph is
 A 1 B k C k-1 D k/2
Discrete Mathematics   Graph Theory
Question 7 Explanation:
 Question 8
 A and written by CPU B and written by peripheral C by peripheral and written by CPU D by CPU and written by the peripheral
Computer Organization   IO Interface
Question 8 Explanation:
 Question 9
Eigen vectors of $\begin{bmatrix} 1 && \cos \theta \\ \cos \theta && 1 \end{bmatrix}$ are
 A $\begin{bmatrix} a^n && 1 \\ 0 && a^n \end{bmatrix}$ B $\begin{bmatrix} a^n && n \\ 0 && a^n \end{bmatrix}$ C $\begin{bmatrix} a^n && na^{n-1} \\ 0 && a^n \end{bmatrix}$ D $\begin{bmatrix} a^n && na^{n-1} \\ -n && a^n \end{bmatrix}$
Engineering Mathematics   Linear Algebra
Question 9 Explanation:
 Question 10
The term 'aging' refers to
 A booting up the priority of the process in multi-level of queue without feedback. B gradually increasing the priority of jobs that wait in the system for a long time to remedy infinite blocking C keeping track of the following a page has been in memory for the purpose of LRU replacement D letting job reside in memory for a certain amount of time so that the number of pages required can be estimated accurately.
Operating System   CPU Scheduling
Question 10 Explanation:
There are 10 questions to complete.