Recent questions tagged selfdoubt - GATE CSE Doubts

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#Threads Who sets the thread priority?
Who is responsible for setting thread priority? Is it the user, and what if priority is not set explicitly, does the compiler give the priority?

asked Dec 6, 2020 in Operating System by sakharam (29 points) | 16 views

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Self Doubt - Probabilty
If the probability of getting a head is P then what is the number of times we need to toss the coin to get a head.

asked Dec 4, 2020 in Mathematical Logic by Mellophi (363 points) | 16 views

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GATE2002-16 https://gateoverflow.in/869/gate2002-16

asked Dec 3, 2020 in Databases by Abhilash Behera (5 points) | 20 views

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max-heap test
what is the level order traversal for an array of elements 20,15,21,31,16,18,19,40 .These elements are inserted into an empty max heap.

asked Dec 3, 2020 in Algorithms by val_pro20 (2 points) | 58 views

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sorting -algorithms
Best and worst Time complexity for number of inversion using merge sort VS number of inversion using insertion sort

asked Dec 2, 2020 in Algorithms by val_pro20 (2 points) | 20 views

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Self Study Doubt
Lex File %{ #include "y.tab.h" %} %% [a-zA-Z_][a-zA-Z_0-9]* return letter; [0-9] return digit; . return yytext[0]; \n return 0; %% int yywrap() { return 1; } YACC PART: %{ #include<stdio.h> int v=1; %} %token ... the YACC C. Lex return two tokens to the YACC D. RECOGNIZE A VALID VARIABLE WHICH STARTS WITH A LETTER FOLLOWED BY ANY NUMBER OF LETTERS OR DIGITS Fe

asked Nov 29, 2020 in Compiler Design by shwetag (5 points) | 24 views

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Probability ncert doubt
Find the probability that at most 2 heads and at most 2 tails occur when 4 coins are tossed simultaneously?

asked Nov 29, 2020 in Probability by Dheera (-20 points) | 43 views

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Which sub topics to study?
I have not studied 11 and 12 std maths in much depth and, as a result, I am too weak in 12 topics. I want to know which sub-topics do I have to study from 11 and 12 std. I was solving PYQ on integration and found some problems have double ... point. So, can anyone give me the topic list or the chapters which I have to study from NCERT. It will be of great help.

asked Nov 28, 2020 in Mathematical Logic by neel19 (7 points) | 19 views

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https://www.csd.uwo.ca/~mmorenom/CS433-CS9624/Resources/master.pdf

asked Nov 27, 2020 in Algorithms by kiioo (9 points) | 40 views

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Bayes Theorem self doubt
A card from a pack of 52 cards is lost. From the remaining cards of the pack, two cards are drawn and are found to be both diamonds. Find the probability of the lost card being a diamond.

asked Nov 27, 2020 in Probability by Dheera (-20 points) | 17 views

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Doubts NIC Exam STA 2020
Q. Black box testing method focus on the: A) Boundary condition of the software B) control structure of the software C) testing of user interface only D) cyclomatic complexity

asked Nov 27, 2020 in IS&Software Engineering by Hradesh patel (9 points) | 17 views

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Comparators and Multiplexers in all three Caches
Can anyone give the crisp conclusion on number of comparators and multiplexers required for Direct mapped cache k-way set associative Cache Fully set associative cache Please include diagrams and explanation. Note: you can also refer Hamacher.

asked Nov 26, 2020 in CO & Architecture by ijnuhb (747 points) | 74 views

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The function f(x)=2.5loge(2+exp(x2−4x+5)) attains a minimum at x=?

asked Nov 26, 2020 in Calculus by neel19 (7 points) | 15 views

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In the interval [0,π] the equation x=cosx has ...

asked Nov 26, 2020 in Calculus by neel19 (7 points) | 20 views

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Self Doubt: TOC Languages
Say I am given an arbitrary language – a set of words. Is there any standard way to determine if the set of words is Regular or Context-Free or Recursive or Recursively Enumerable

asked Nov 25, 2020 in Theory of Computation by swaroop-nath (5 points) | 24 views

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External Sorting - Calculate number of passes
Let suppose that we have a file with n = 10^6 records. The block size is B = 10 records and we have available main memory m = 20 blocks. (Sorting with MergeSort) 1. How many runs will you produce in the ... /classes/Comp115-Spring2017/exercises/Comp115-Class13-ExSol-External-Sorting.pdf) and i am confused about the different terms i have to manage.

asked Nov 25, 2020 in Databases by AlgoHuman (5 points) | 10 views

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Self Doubt - Relational Algebra
Can we use aggregate functions in Relational Algebra or TRC? There are some resources online when say that we can use them but should we consider the same while answering in GATE. Link – https://www.cs.purdue.edu/homes/bb/cs448_Fall2016/lecture-files/pdf/ch06-The%20Relational%20Algebra%20and%20Calculus.pdf

asked Nov 25, 2020 in Databases by Mellophi (363 points) | 11 views

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Just thinking about it
Since Reduce entries in both LR(0) and SLR(1) are different. so does that mean error entries will also be different in these two.

asked Nov 22, 2020 in Compiler Design by amanizardar (5 points) | 22 views

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Self doubt on Syncronization Mechanisms
What is the relationship between spinlock and priority inversion?

asked Nov 21, 2020 in Operating System by nvs16 (9 points) | 11 views

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Self Doubt on Semaphores and Priority Inversion
I know that priority inversion problem happens for all the busy waiting solutions and consequently happen in busy waiting semaphores. Can priority inversion happen in non-busy waiting solutions as well i.e. say blocking semaphores(semaphores which use block() and wakeup()) ?

asked Nov 21, 2020 in Operating System by nvs16 (9 points) | 10 views

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Will Download B.S. Grewals in Higher Mathematics bring antivirus？

asked Nov 18, 2020 in Digital Logic by Ellalucky (5 points) | 15 views

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Source: http://www.cs.iit.edu/~iraicu/teaching/EECS211/quiz4-sol.pdf

asked Nov 18, 2020 in DS by rish-18 (9 points) | 49 views

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Regular Languages in TOC
Does the superset of Non Regular Language be always Non Regular?

asked Nov 18, 2020 in Theory of Computation by samir757 (7 points) | 28 views

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HOW TO KNOW DATE OF ALL EXAMS SIMILAR TO GATE WHICH CSE FINAL YEAR STUDENT CAN GIVE ?

asked Nov 17, 2020 in Others by SHIV_KANNAUJ (9 points) | 32 views

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Self Doubt:Digital
How many PI's are there in below K-map? X 1 1 0 0 X 0 1 X X X 1 0 0 X 1 I hope there will be 6 PI's. But if the highlighted pair of only don't care is considered as PI's, then pair will be 7. I hope only donot care ... ) on a Karnaugh map which is not subsumed by any other implicant in the same map. link:https://en.wiktionary.org/wiki/prime_implicant Someone confirm the final ans

asked Nov 14, 2020 in Digital Logic by srestha (1k points) | 35 views

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Self doubt:Programming
#include <stdio.h> int main(void) { int b=-1,a=-2; while(+(+b--)!=1){ b-=a++; } printf("%d",b); return 0; } What will be output of this code? I thought output should be 1, but getting no output. Plz tell me why no output here?

asked Nov 13, 2020 in Programming by srestha (1k points) | 50 views

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cpu scheduling self doubt
A Clock Interrupt Handler Needs 2 Msec (Including Context Switch Overhead) Per Clock Tick To Execute, And The Clock Runs At 75 Hz. What Fraction Of The Cpu Time Is Devoted To The Clock?

asked Nov 13, 2020 in Operating System by Dheera (-20 points) | 27 views

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Self doubt. Operating system.
While calculating effective access time in some solutions it is taken that page fault occurs even when tlb hit has occurred while in other solutions it is taken that page fault do not occur when tlb hit occurs. It is highly confusing. It's true that page fault can occur even if we get a tlb hit. We should solve problems keeping this in mind or not??

asked Nov 12, 2020 in Operating System by Kindaichi (10 points) | 16 views

+1 vote

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self doubt araised from previous years question
"Given a <PDA> P and a NFA N, Deciding Whether they both accept the same language or not" is Undecidable. " "Given a <DPDA> D and a NFA N, Deciding Whether they both accept the same language or not" is Decidable. " are those two statements are true?

asked Nov 12, 2020 in Theory of Computation by Salla shivateja (19 points) | 59 views

+1 vote

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self doubt in Normalization
Why we don’t allow a prime attribute to transitively dependent on a key in BCNF but allow in 3 NF ?

asked Nov 12, 2020 in Databases by s_dr_13 (15 points) | 18 views

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Regarding Account Deletion.
How to delete my gate overflow account.

asked Nov 11, 2020 in Others by Swadesh Trimukhe (5 points) | 34 views

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1 answer

OS self doubt
Answer with explanation.

asked Nov 10, 2020 in Operating System by Dheera (-20 points) | 17 views

+1 vote

2 answers

Cpu scheduling self doubt
What is the answer?

asked Nov 10, 2020 in Operating System by Dheera (-20 points) | 72 views

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1 answer

Process states self doubt
What is the answer and explanation?

asked Nov 10, 2020 in Operating System by Dheera (-20 points) | 41 views

+1 vote

1 answer

self doubt araised from previous years question
can every quory written in relational algebra is written in relational calculus ?

asked Nov 10, 2020 in Databases by Salla shivateja (19 points) | 18 views

+1 vote

1 answer

Algorithms by Jeff Erickson

asked Nov 10, 2020 in Algorithms by kalin (155 points) | 26 views

+1 vote

1 answer

PhD Admissions Written Test IIT-B Computer Networks

asked Nov 9, 2020 in Computer Networks by Sgr007 (21 points) | 52 views

+1 vote

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Self Doubt in distribution problem
I have a small doubt which is :- Is identical to identical distribution the same as integer partition? Or in general, how to deal with distribution of identical letters to identical boxes?

asked Nov 9, 2020 in Combinatory by s_dr_13 (15 points) | 15 views

+1 vote

1 answer

PhD Admissions Written Test IIT-B
A time sharing system uses a round-robin scheduling policy with a time slice of 55 msec. Its scheduling overhead is 3 msec. Operation of 10 identical processes is initiated in this system at time 0 seconds.The nature of each of these processes is as follows: ... its 5th iteration at time t msec. It will initiate the I/O operation in its 6th iteration at -------Sec

asked Nov 7, 2020 in Operating System by Sgr007 (21 points) | 49 views

+1 vote

1 answer

Fork system call self doubt
main() { int a=1, b=2, c=0; c+=a++*++b; print(a,b,c); if(fork()==0) { a+=b+=c+=2; print(a,b,c); c++; } else { b+=c+=a+=3; print(a,b,c); c--; } print(c); } What is the output when this program is executed? Please show the intermediate results also.

asked Nov 7, 2020 in Operating System by Dheera (-20 points) | 35 views

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