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1

GATE CSE 1987 | Question: 4a
Find out the width of the control memory of a horizontal microprogrammed control unit, given the following specifications: $16$ control lines for the processor consisting of ALU and $7$ registers. Conditional branching facility by checking $4$ status bits. Provision to hold $128$ words in the control memory.

commented in CO and Architecture Sep 11, 2020

4.5k views

3 answers

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GATE CSE 1999 | Question: 17
Consider the following program fragment in the assembly language of a certain hypothetical processor. The processor has three general purpose registers $R1, R2$and $R3$. The meanings of the instructions are shown by comments (starting with ;) after the instructions. ... the values n, 0, and 0 respectively. What is the final value of $R3$ when control reaches $Z$?

answered in CO and Architecture Sep 10, 2020

4.7k views

1 answer

3

digital signature
can we use a secret symmetric key to both sign and verify a signature?

answered in Computer Networks Apr 29, 2017

223 views

3 answers

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Suppose that 100 people enter a contest and that different winners are selected at random for first, second, and third prizes. What is the probability that Michelle wins one of these prizes if she is one of the contestants?

commented in Probability Apr 26, 2017

2.6k views

1 answer

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Addressing Mode

comment edited in CO and Architecture Feb 9, 2017

501 views

5 answers

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GATE IT 2006 | Question: 55
Consider the solution to the bounded buffer producer/consumer problem by using general semaphores $S, F,$ and $E$. The semaphore $S$ is the mutual exclusion semaphore initialized to $1$. The semaphore $F$ corresponds to the number of free slots in the buffer and is ... Signal $(F)$ in the Consumer process (I) only (II) only Neither (I) nor (II) Both (I) and (II)

commented in Operating System Feb 7, 2017

11.2k views

3 answers

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GATE CSE 2008 | Question: 28
How many of the following matrices have an eigenvalue 1? $\left[\begin{array}{cc}1 & 0 \\0 & 0 \end{array} \right]\left[\begin{array}{cc}0 & 1 \\0 & 0 \end{array} \right] \left[\begin{array}{cc}1 & -1 \\1 & 1 \end{array} \right]$ and $\left[\begin{array}{cc}-1 & 0 \\1 & -1 \end{array} \right]$ one two three four

commented in Linear Algebra Feb 7, 2017

6.7k views

1 answer

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GATE CSE 1998 | Question: 13
Let $M=(\{q_0, q_1\}, \{0, 1\}, \{z_0, X\}, \delta, q_0, z_0, \phi)$ be a Pushdown automation where $\delta$ is given by $\delta(q_0, 1, z_0) = \{(q_0, Xz_0)\}$ $\delta(q_0, \epsilon, z_0) = \{(q_0, \epsilon)\}$ ... $\delta(q_0, 0, z_0) = \{(q_0, z_0)\}$ What is the language accepted by this PDA by empty stack? Describe informally the working of the PDA

commented in Theory of Computation Feb 4, 2017

5.0k views

4 answers

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GATE CSE 2015 Set 2 | Question: 24
Assume that for a certain processor, a read request takes $50\:\text{nanoseconds}$ on a cache miss and $5\:\text{nanoseconds}$ on a cache hit. Suppose while running a program, it was observed that $80\%$ of the processor's read requests result in a cache hit. The average read access time in nanoseconds is ______.

commented in CO and Architecture Jan 31, 2017

11.8k views

3 answers

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GATE CSE 1993 | Question: 8.5
The less-than relation, $<,$ on reals is a partial ordering since it is asymmetric and reflexive a partial ordering since it is antisymmetric and reflexive not a partial ordering because it is not asymmetric and not reflexive not a partial ordering because it is not antisymmetric and reflexive none of the above

commented in Set Theory & Algebra Jan 30, 2017

7.9k views

6 answers

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GATE CSE 1997 | Question: 3.1
Let $\left(Z, *\right)$ be an algebraic structure where $Z$ is the set of integers and the operation $*$ is defined by $n*m = \max(n,m)$. Which of the following statements is true for $\left(Z, *\right)$? $\left(Z, *\right)$ is a monoid $\left(Z, *\right)$ is an Abelian group $\left(Z, *\right)$ is a group None of the above

commented in Set Theory & Algebra Jan 29, 2017

10.8k views

5 answers

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GATE CSE 2014 Set 3 | Question: 44
The memory access time is $1$ nanosecond for a read operation with a hit in cache, $5$ nanoseconds for a read operation with a miss in cache, $2$ nanoseconds for a write operation with a hit in cache and $10$ nanoseconds for a write ... cache hit-ratio is $0.9$. The average memory access time (in nanoseconds) in executing the sequence of instructions is ______.

commented in CO and Architecture Jan 26, 2017

19.6k views

11 answers

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GATE CSE 1994 | Question: 1.11
In a compact single dimensional array representation for lower triangular matrices (i.e all the elements above the diagonal are zero) of size $n \times n$, non-zero elements, (i.e elements of lower triangle) of each row are stored one after another, starting from the first row, the index of the ... is: $i+j$ $i+j-1$ $(j-1)+\frac{i(i-1)}{2}$ $i+\frac{j(j-1)}{2}$

commented in DS Jan 26, 2017

23.4k views

20 answers

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GATE CSE 2016 Set 1 | Question: 54
For a host machine that uses the token bucket algorithm for congestion control, the token bucket has a capacity of $1$ $\text{megabyte}$ and the maximum output rate is $20$ $\text{megabytes}$ per $\text{second}$. Tokens arrive at a rate to ... to send $12$ $\text{megabytes}$ of data. The minimum time required to transmit the data is _____________ $\text{seconds}$.

commented in Computer Networks Jan 25, 2017

34.5k views

5 answers

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GATE CSE 2006 | Question: 82
Consider the diagram shown below where a number of LANs are connected by (transparent) bridges. In order to avoid packets looping through circuits in the graph, the bridges organize themselves in a spanning tree. First, the root bridge is identified as the bridge with the least serial number. ... $\text{B1, B5, B2, B3, B4}$ $\text{B1, B3, B4, B5, B2}$

commented in Computer Networks Jan 23, 2017

19.2k views

1 answer

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ravula test series
Which of the following statements is/are TRUE? S1: Suppose L is Turing recognizable but not Turing decidable. Then any Turing machine that recognizes L must fail to halt on an infinite number of strings. S2: The language A'TM={⟨M,w⟩ | M does not accept w} is Turing recognizable.

commented in Theory of Computation Jan 17, 2017

641 views

1 answer

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Test by Bikram | Mock GATE | Test 1 | Question: 32
Fill in the blanks in the procedure: void Prod (Element Type X, Priority Queue H) { int i; if (IsFull(H)) { Error ("Priority queue is full"); return; } for (i=++H -> size; H -> Elements [i/2]>X; i/=2) _________________ } ... 2]=H$\rightarrow$ Elements $[i/2]$; $H$\rightarrow$ Elements $[i^2 ]=X;$ $H$\rightarrow$ Elements $[i]=X;$

commented in GATE Jan 17, 2017

688 views

13 answers

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GATE CSE 1997 | Question: 6.8
Each Process $P_i, i = 1\ldots 9$ is coded as follows repeat P(mutex) {Critical section} V(mutex) forever The code for $P_{10}$ is identical except it uses V(mutex) in place of P(mutex). What is the largest number of processes that can be inside the critical section at any moment? $1$ $2$ $3$ None

commented in Operating System Jan 17, 2017

19.9k views

1 answer

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turing machine
Consider the following languages: Lne={〈M〉│L(M)≠ф } Le={〈M〉│L(M)=ф } where 〈M〉 denotes encoding of a Turning machine M Then which one of the following is true? (a) Lne is r.e. but not recursive and Le is not r.e. (b) Both are not r.e. (c) Both are recursive (d) Le is r.e. but not recursive and Lne is not r.e.

commented in Theory of Computation Jan 15, 2017

381 views

6 answers

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GATE CSE 1992 | Question: 12-b
Let the page reference and the working set window be $c\ c\ d\ b\ c\ e\ c\ e\ a\ d\ $ and $4$, respectively. The initial working set at time $t=0$ contains the pages $\{a,d,e\}$, where $a$ ... at time $t=-2$. Determine the total number of page faults and the average number of page frames used by computing the working set at each reference.

commented in Operating System Jan 15, 2017

8.9k views

2 answers

21

binary heap
Consider a binary min heap containing n elements and every node is having degree 2 ( i.e. full binary min heap tree). What is the probability of finding the largest element at the last level ? According to my understanding the largest element has to be a leaf and since leafs can be on two levels last and second last therefore the probability should be 1/2

commented in DS Jan 15, 2017

1.6k views

0 answers

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Which of the following is CSL?

commented in Theory of Computation Jan 15, 2017

509 views

1 answer

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GATE CSE 2011 | Question: 35
Consider the following table of arrival time and burst time for three processes $P0, P1$ and $P2.$ ... of processes. What is the average waiting time for the three processes? $5.0$ ms $4.33$ ms $6.33$ ms $7.33$ ms

commented in Operating System Jan 14, 2017

10.6k views

1 answer

24

TOC Decidability
Are the following problems decidable? 1.{⟨M⟩∣M is a TM and there exist an input whose length is less than 100, on which M halts} I think we can simulate all the combinations of strings whose length is less than 100,and if the machine halts for any of them ... these words are not accepted by machine,Can it hang the machine?Is it also RE but NOT REC Please correct if I am going wrong

answered in Theory of Computation Jan 14, 2017

458 views

2 answers

25

DS-CLL
Time complexity to insert a node in the end of circular linked list, if the pointer to the 1st node is given and number of nodes in list is N is A)O(1) B)O(log N) C)O(N) D)O(N log N)

commented in DS Jan 13, 2017

2.5k views

2 answers

26

the number of generators of the group { 0,1,2........... 14} under the group operation addition modulu 15 is

commented in Set Theory & Algebra Jan 12, 2017

2.7k views

2 answers

27

Binary Search tree
Consider an array with ‘n’ numbers, let “T” be time complexity for finding a number appeared maximum number of times in an array. Using Binary Search Tree data structure the T will be A. O(log n) B. O(n) C. O(n logn) D. O(n2)

commented in Programming Jan 12, 2017

1.9k views

2 answers

28

NCFL,CFL,PDA
L1={wlwR∣w∈{a,b}∗,l∈{a,b} } which type of language is this DCFL or NDCFL? (note that l∈{a,b} not {a,b}*) I feel its NDCFL can you also tell how PDA will look like?

comment reshown in Theory of Computation Jan 12, 2017

1.2k views

1 answer

29

Decidable/Undecidable
Let A = {<M>|M is a TM and L(M) is regular}. Then A is _________ a) Decidable language and regular language b) Undecidable but partially decidable c) Totally not decidable d) Decidable language but not regular language

answered in Theory of Computation Jan 12, 2017

559 views

2 answers

30

DS-BST
If preorder of a BST is passed as an argument to the above function. Function returns 1 if, a)All the leaf nodes of the tree are at same level b) All the nodes of the tree have atmost 1 child c) True is a complete binary tree, where the nodes at each level are completely filled d) None of these

answered in DS Jan 12, 2017

619 views