Recent activity - GATE CSE Doubts

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NIELIT Scientist B 2016
Which of the following is wrong: A. Turing machine is a simple mathematical model of general purpose computer B. Turing machine is more powerful than finite automata C. Turing machine can be simulated by a general purpose computer D. All of the above ... are wrong. Turing machine is more powerful than finite automata is true, similarly option C and A also seems to be true.

asked 25 minutes ago in Theory of Computation by Ollie (6 points) | 2 views

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Self doubt(DBMS-ER DIAGRAMS)
Can one-many recursive relation exist in which the one side is having partial participation and the many side is having total participation?

asked 26 minutes ago in Databases by Doraemon (100 points) | 2 views

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Fork () in for Loop
As it runs for i=0 to 10 except I=5 as continue is used. Therefore 10 times. Therefore 2^10-1 children. But I couldn't get the concept as I am using formulae. Please make a diagram just for overview to some iterations that his fork exactly calls.

commented 26 minutes ago in Operating System by lokeshsharma123456 (11 points) | 7 views

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Consider the following grammar G.
Q.27 Consider the following grammar G. S→AB/d A→aA/b B→bB/c The grammar G is (a) LL (1) grammar and not LR (0) (b) LL (1) and LR (0) (c) Not LL (1) but LR (0) (d) Neither LL (1) nor LR (0)

commented 27 minutes ago in Compiler Design by Debanil (6 points) | 9 views

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Programming Doubt on C
#include<stdio.h> int x=14; int fun(){ return x--; } int main(){ int sum=0; for(fun();--x;fun()) sum=sum+fun(); printf("%d",sum); return 0; } What will be the output? See , inside for loop , at the time of initialization ... get some sequence point. right? Where will ${\color{Green} {fun()}}$ it get sequence point? Will in this iteration value of sum be 9?

answer selected 2 hours ago in Programming by srestha (683 points) | 16 views

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Matrices Eigen Values
The value of ‘x’ for which all the eigen values of the matrix given below are real is 10 5+j 4 x 20 2 4 2 -10 5+j b. 5-j c.1-5j d.1+5j

commented 2 hours ago in Mathematical Logic by Shivateja MST (113 points) | 6 views

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Question on vector calculus
Which one of the following descries the relationship among the three vectors, i+j+k ,2i+3j+k ,5i+6j+4k ? The vectors are mutually perpendicular The vectors are linearly dependent The vectors are linearly independent The vectors are unit vectors Anyone please clarify.

commented 5 hours ago in Mathematical Logic by Shivateja MST (113 points) | 5 views

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GATE2001-11-b
Please solve this. I didn’t understand the approach. https://gateoverflow.in/203826/gate2001-11-b

commented 11 hours ago in Digital Logic by varunraj (6 points) | 15 views

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ISI 2019 PCB
Let R be a relation with functional dependencies F. For any subset of attributes $X ⊆ R$, the closure of $X$ is defined as the set $X^+$ = {$A ∈ R$ | $X → A$ holds with respect to $F$ }. For two non-empty attribute sets $Y$ and $Z$ in $R$, prove or disprove each of the following statements: (a) $(Y^+Z)^+ = (Y Z)^+$ (b) $(YZ)^+ = Y^+Z^+$

asked 11 hours ago in Databases by thebiggercypher (6 points) | 1 view

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#discrete mathematics #exponential generating function

asked 11 hours ago in Combinatory by souren (28 points) | 3 views

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what is the Meaning of following in peter linz algortihm for Chapter 3 , Nfa to Rex?

commented 11 hours ago in Theory of Computation by sakharam (19 points) | 8 views

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Fork () in for Loop
As it runs for i=0 to 10 except I=5 as continue is used. Therefore 10 times. Therefore 2^10-1 children. But I couldn't get the concept as I am using formulae. Please make a diagram just for overview to some iterations that how fork exactly calls.

asked 23 hours ago in Operating System by lokeshsharma123456 (11 points) | 3 views

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Anyone applied for BIS ? Please share your rank .

asked 23 hours ago in Job Queries by askeshavas (8 points) | 4 views

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self doubt 2-PDA
If suppose we have an NPDA for a language,Does that mean that the language is always NCFL?

commented 1 day ago in Theory of Computation by !KARAN (351 points) | 11 views

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Self Doubt 5:Peter Linz(exercise 1.2)
$L1={a^{n} b^{m};n>=0,m<n}$ $L2={a^{n} b^{(n-2)};n>=3}$ $L3=complement$ $of$ $L2.$ $L1-L3$ is? According to me $L1-L3$ is same as $L2$. Please verify.

commented 1 day ago in Theory of Computation by Sambhrant Maurya (401 points) | 14 views

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#admission#application fees
Is there no application fees to apply for IIT Mandi's master programme? I have applied for a mtech programme but there is no payment option.

commented 1 day ago in IISc/IITs by crg2020 (6 points) | 21 views

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TOC-Which of the following is true?
L1={a^n b^m:n>=0,m<n} L2={a^3n b^2n : n>2} L3={a^n b^m: m<=n-3 or m=n-1} i>L1 U L2 IS A DCFL ii>L1 L2 IS A DCFL iii>L3 is a DCFL. Please verify which of the following is true?

asked 1 day ago in Theory of Computation by Doraemon (100 points) | 5 views

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STATISTICS - Probability
The Indian cricket team is visiting New Zealand to play a test series comprising five matches. In each match, assume that the Indian team has a 70% chance of winning. Further, assuming that the matches are independent of each other, what is the probability that: The Indian team will win the series? b. The team will win all five matches, and that the team will lose all?

asked 1 day ago in Mathematical Logic by SHIVANI AGARWAL (6 points) | 5 views

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GATE CSE 2014 PREVIOUS YEAR QUESTIONS
Consider a join (relation algebra) between relations r(R)r(R) and s(S)s(S) using the nested loop method. There are 3 buffers each of size equal to disk block size, out of which one buffer is reserved for intermediate results. Assuming size(r(R))<size(s(S)) , ... s(S)s(S) is more than 0.5. join selection factor between r(R)r(R) and s(S)s(S) is less than 0.5 [closed]

closed 1 day ago in Databases by Sambhrant Maurya (401 points) | 7 views

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Quantitative Aptitude-R.S Aggrawal
10,000 is to be paid back by 4 equal annual installments. Rate 10% per annum. Find the value of each installments.?

commented 2 days ago in Numerical Ability by theprofessor (13 points) | 6 views

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Quantitative Aptitude-Arun Sharma ( Time and Work)

asked 2 days ago in Numerical Ability by theprofessor (13 points) | 4 views

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self doubt 4 -Peter Linz-chapter 7.
It has been told in Peter Linz that if L1 is deterministic context-free and L2 is regular, then a) the language L1 ∪ L2 is deterministic context-free b) the language L1 ∩ L2 is deterministic context-free. But DCFL is not closed under ... regular language is a DCFL then automatically , therefore L1UL2 and L1 ∩ L2 might not be closed. Can anyone please verify?

answered 2 days ago in Theory of Computation by !KARAN (351 points) | 12 views

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Quantitative Aptitude-Arun Sharma (Time & Work)
There are three taps A,B,C in a tank. They can fill the tank in 10,20,25 hours respectively. At first all of them are opened simultaneously. Then after 2 hours, tap C is closed and A and B are kept running. After 4th hour tap B is also closed. ... tap A alone. Find the percentage of work done by tap A by itself. A) 32% B) 52% C) 75% D) none of these

answer selected 2 days ago in Numerical Ability by theprofessor (13 points) | 3 views

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Caluculate Gate 2020 Percentile
While filling IIT kanpur ms research form it asks for gate percentile . How to calculate it . Thanks in advance.

answer selected 2 days ago in IISc/IITs by Gourish (9 points) | 14 views

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InterviewBit
In the following C function, let $n >= m$. int gcd(int n, int m) { if (n%m ==0) return m; if (n < m) swap(n, m); while (m > 0) { n = n%m; swap(n, m); } return n; } What is the time complexity of the above function assuming n > m?

asked 2 days ago in Algorithms by Sambhrant Maurya (401 points) | 7 views

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BITS HD 2020 - Apply for multiple programmes
I plan to apply for BITS via both mediums (GATE + BITS HD) for the following programmes – Computer Science Software Systems Embedded Systems So will I end up giving 3 different BITS HD test for each subject? What subject test will be applicable for Embedded systems in the BITS HD exam? Or am I misunderstanding the process?

asked 3 days ago in Other Colleges by crg2020 (6 points) | 6 views

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TEST SERIES FULL LENGTH
A program is called reentrant if it can be interrupted in the middle of its execution, and then be safely called again ( re-entered ) before its previous invocations complete execution. The interruption could be caused by an internal action such as a jump or call, or by an external action such ... here! *y = t; } void isr() { int x = 1, y = 2; swap(&x, &y); } D)None

commented 3 days ago in Programming by Kaluti (6 points) | 26 views

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SELF DOUBT-3(PDA)
Can someone give me the PDA for this language? L={W BELONGS TO {a+b+c}*; (no. of a+no. of b) not equal to the number of c} Actuallly I am getting a NPDA for this .does this language have a DPDA?

asked 3 days ago in Theory of Computation by Doraemon (100 points) | 5 views

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techtud.com c & data structure quiz 2020
G is a graph on n vertices and 2n−2 edges. The edges of G can be partitioned into two edge-disjoint spanning trees. Which of the following is NOT true for G? (A)For every subset of k vertices, the induced subgraph has at most ... edge-disjoint paths between every pair of vertices. (D)There are at least 2 vertex-disjoint paths between every pair of vertices.

commented 3 days ago in Programming by !KARAN (351 points) | 4 views

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synchronization problems
#include <sys/types.h> #include <stdio.h> #include <unistd.h> int value = 10; int main() { pid_t pid; pid = fork(); if (pid == 0) { value = value + 100; } else if (pid > 0) { value = value -100; printf("PARENT: value= %d \n", value); //Line A wait (NULL); } } is there any synchronization problem in updating values

asked 3 days ago in Operating System by navo123 (7 points) | 4 views

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synchronization
The Fibonacci sequence is the series of numbers 0, 1, 1, 2, 3, 5, 8, .... Formally, it can be expressed as: f ib0 = 0 f ib1 = 1 f ibn = f ibn−1 + f ibn−2 i. Write a C program using the fork() system call that that generates ... . How do y ou identify the zombie process? vii. Modify the above program to create an orphan process. viii. Compare and contrast the process and threads.

asked 3 days ago in Operating System by navo123 (7 points) | 7 views

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#microprogrammed control unit
In case of micro programmed control unit, why we have field reserved for control memory address as the micro program counter will automatically be incremented by clock and will point to the next micro instruction in sequence?

asked 3 days ago in CO & Architecture by Lovejeet Singh (7 points) | 4 views

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REQUEST FOR SOLTION MANUAL FOR PETER LINZ
Can anyone provide me with the solution manual for 6TH EDITION OF PETERLINZ.(or if not available any edition you have)

asked 3 days ago in Theory of Computation by Doraemon (100 points) | 4 views

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#general aptitude
The probabilities that a student passes in Mathematics,physics and chemistry are m,p,and c respectively.Of these 3 subjects ,the student has a 75% chance in passing in at least onc,50% chance in passing at least two and a 40% chance of passing exactly two. calculate p+m+C=?

commented 4 days ago in Numerical Ability by Ram Swaroop (270 points) | 9 views

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gate 2006 -IT-56
For each of the four processes P1,P2,P3,P1,P2,P3, and P4P4. The total size in kilobytes (KB)(KB) and the number of segments are given below. ProcessP1P2P3P4Total size (in KB)19525445364Number of segments4538ProcessTotal size (in KB)Number of ... ; P Answer to this question is B or C ? and if possible can anyone provide the solution with explanation ; Thanks

asked 4 days ago in Operating System by Harpuneet Kalsi (6 points) | 6 views

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Geeks Algo Quiz
Need help with this

answered 5 days ago in Algorithms by toxicdesire (293 points) | 17 views

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Quantitative Aptitude-Arun sharma
Rs. 1694 is repaid after 2 years at compound interest. Which of the following is the value of the principal and rate? A) 1200, 20% B) 1300, 15% C) 1400,10% D) 1500,12%

answered 5 days ago in Numerical Ability by Ram Swaroop (270 points) | 7 views

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NIELIT-2017-113
The addressing mode used in an instruction of the form $ADD\ X\ Y,$ is ___________ (A) Direct (B) Absolute (C) Indirect (D) Indexed

commented 5 days ago in CO & Architecture by Ram Swaroop (270 points) | 13 views

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TYPE OF THE LANGUAGE-Peter Linz -chapter 4
L={a^n:n is either prime or product of 2 or more prime numbers} According to me this is regular. Can anyone verify?

commented 5 days ago in Theory of Computation by Doraemon (100 points) | 20 views

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Self Doubt: Cost Criteria
I understand that gate input cost (G) is the number of inputs to the gates in the implementation corresponding exactly to the given equation or equations and it can be found by finding the sum of all literal appearances and the number of terms excluding single literal ... the gates in the implementation is 0. Which one is the correct gate input cost of F = x'? 1 or 0?

asked 5 days ago in CO & Architecture by Will12 (6 points) | 2 views

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