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Doubt
DOUBT 1: if head = P → link. is performed then what will happen to the nodes containing values a and b? will they get removed as no link is pointing them? and we will left with only three nodes like DOUBT 2: what does head = (*P).link; equals to?

Pranavpurkar asked in Programming Sep 27

by Pranavpurkar

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#Self Doubt
When we say that vulnerable time in pure aloha will be 2*frame transmission time.So what this frame transmission time?? My doubt is does frame transmission time= propagation time+transmission time … collision can also happen during propagation time ??

lalitver10 asked in Computer Networks Sep 14

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CMI 2021 B2
2. Imagine you are playing a computer game that consists of different types of coins. You have the power to cast two magic spells s1 and s2. Each spell consumes some number of coins of each type and produces some number of coins of each type. Spell s1 ... proper way and by the official method, I was not ale to come to proper answer I have also provide the official solution below.

ChayAdhiraj asked in Algorithms May 20

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CMI 2021 Computer Science (A2)
Let L be the language over {a, b} that contains the same number of occurrences of a and b. Which of the following languages is regular? (a) L ∩ a∗b∗ (b) (L ∩ a∗b∗) ∪ a∗b∗ (c) L ∪ a∗b∗ (d) (L ∩ a∗b∗) ∪ b∗a My personal ... a*b* is regular and and L is regular. However L1 union/intersection L is not regular Could someone please explain this question in some detail ?

ChayAdhiraj asked in Theory of Computation May 19

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#login problems
Hello sir!! I got in to a serious problem ..I have forgotetn the login password of Gate overflow..Cant do login from my Laptop or any other device..Currently I am using The app..but I need to login in my laptop..How can I reset my password ?..Pls help me it's necessary and a bit urgent

Ritabrata Dey asked in Others May 28, 2019

by Ritabrata Dey

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confusion
Bias formula for floating point representation is 2^k-1 bias formula for IEEE floating point representation is 2^(k-1)-1 Is it right????

G Phalkey asked in Digital Logic Jan 24, 2019

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#made easy
Stack A has entries a,b,c,d(with a on top).Stack B is empty. An entry popped out of stack A is pushed into stack B. An entry popped out of stack B can only be printed. The no. of possible permutation for printing the elements are __ ? 24 12 21 14 can anybody give a generalized formula with explanation for this ?

Satbir asked in Programming Dec 19, 2018

by Satbir

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Self doubt operating system
What is normalised turn around time for a process ? if we are using any scheduling algorithm

Prince Sindhiya asked in Operating System Dec 16, 2018

by Prince Sindhiya

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#CO DOUBT_RC Test series
pls explain!

Gate Fever asked in CO and Architecture Nov 28, 2018

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Local Coaching
A cache is having 60% hit ratio. Cache access time is 30 ns and main memory access time is 100 ns. What is the average access time for reading? My doubt is whether to assume cache and main memory to be hierarchically connected or directly connected to the processor when nothing is given? If assumed ... , ans = 0.6(30) + 0.4(30+100). If assumed to be direct, ans = 0.6(30) + 0.4(100).

subho16 asked in CO and Architecture Nov 26, 2018

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doubt
A machine has a 32-bit architecture, with 1-word long instructions. It has 64 registers, each of which is 32 bits long. It needs to support 45 instructions, which have an immediate operand in addition to two register operands. Assuming that the immediate ... we use signed 2's complement instead of unsigned integer then what will be the maximum and minimum value of the immediate operand ?

night_fury asked in CO and Architecture Nov 25, 2018

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doubt
Can someone provide the exact microoperation involved in all of the phases just coz where we are supposed to search it out everywhere I got is different? so please Guy if someone is having coaching classes please share what u have learned in class it will be really helpful. Thanks! Instruction fetch decode phase Effective address computation operand fetch Execute phase

anonymous asked in CO and Architecture Nov 21, 2018

by anonymous

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Ace Test Series: CO & Architecture - Disk
In the solution to this question, it is given that the number of rotations needed is 2.75. How we got 2.75?

VJ2793 asked in CO and Architecture Nov 19, 2018

by VJ2793

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Doubt clearing
Incase of operand forwarding in RISC pipeline with stages Instruction fetch (IF) Instruction decode (ID) Execute (EX) Memory Access (MA) Write Back (WB) If it is not mentioned from which stage to which stage the operand is forwarded, should I by default take that it is forwarded from MA stage to ID stage?

nepobose asked in CO and Architecture Oct 31, 2018

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cache memory doubt
#CO Suppose Cache memory with K way set associative mapping,with no. of set -S,no. of line -L,size of each line -O. so what is hardware requirement (i.e.No.of multiplexer ,size of each multiplexer,no.of comparator,and size of each comparator) ?

Tanmay_Jawkhede asked in CO and Architecture Oct 20, 2018

by Tanmay_Jawkhede

91 views

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1 answer

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Multilevel paging
Doubt In multi level paging Is it required that all the pages of the page table should be in main memory like inner page table and outer page table should be in main memory or either by loading only outer page table we can run the process if any inner page table page required it generate a trap(page fault )and that inner page will put into the main memory by os ?

rajinder singh asked in Operating System Oct 14, 2018

by rajinder singh

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Cycle Stealing DMA Doubt
Consider x = CPU time or data preparation time = 1 microsecond and y = data transfer time from DISK to DMA = 21 microseconds. % of memory cycles stolen = 1/(21) * 100 = 4.76% Doubt - For each 21 memory cycle, 1 memory cycle will be taken to ... . CPU can do its own work for 20 memory cycles and 1 memory cycle it will remain idle. What does this CPU cycle stealing means ?

iarnav asked in CO and Architecture Oct 5, 2018

by iarnav

1.8k views

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18

General question
Can anyone plzzz help me how can I post any photo of problem I have from my gallery

Priya Singh 6 asked in Others Sep 30, 2018

by Priya Singh 6

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#CO pipeline doubt
Consider a 4 stage pipeline processor. The number of cycles needed by the four instructions I1, I2, I3, I4 in stages S1, S2, S3, S4 is shown below: What is the number of cycles needed to execute the following loop? For (i=1 to 2){I1; I2; ... stage, the current instruction(I4) cannot execute a given stage P.S.- Refer here- https://gateoverflow.in/244642/%23co-gate-2009-self-doubt

iarnav asked in CO and Architecture Sep 21, 2018

by iarnav

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Database System Concepts - Set Operation
UNION, Intersect Operation in both, Relational Algebra and SQL automatically eliminates DUPLICATES. Does UNION, INTERSECT operation also by default SORTs the resultant tuples in SQL (OR) the resultant SET in Relational Algebra? If Yes, Does it also automatically sorts the result of UNION ALL & INTERSECT ALL?

cognoscenti asked in Databases Sep 15, 2018

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Doubt on Data Path
In Single bus Architecture for a simple add operation ,we know there are 8 cycles required, where 1st three for Fetch cycle and Others are for execution cycle Steps Action 1. $PC_{out},MAR_{in},Read, Clear-Y,Set Carry Into ALU,Add,Z_{in}$ 2. ... T? 3) Question is only asking clock cycles for execution cycle. Then why we are considering Fetch and Execution cycles in our answer?

srestha asked in CO and Architecture Sep 13, 2018

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2 answers

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#preemption
If a process comes from block state to ready state then what can be said about preemption ?

Satbir asked in Operating System Jul 22, 2018

by Satbir

192 views

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1 answer

23

self doubt
i am currenly studying in BE when it is good time to give the ISRO exam??

vijju532 asked in GATE Jun 24, 2018

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General Question
How can i learn to solve questions based on impllications , contrapositive, conjuction etc maths proportional logic? I am not able to solve any single question of that topic. How can i learn?

Pranav Madhani asked in Mathematical Logic Dec 24, 2017

by Pranav Madhani

121 views

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1 answer

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General Question
Hello! I have question regarding Gate 18. I have done mostly all subjects except OS and CO. As i am planning to leaving as i want to start doing all gate sample papers and practise questions. If i leave those 2 subjects how much marks i am missing and how much can i get ? 1) Best 2) Average

Pranav Madhani asked in Others Dec 11, 2017

by Pranav Madhani

312 views

1 vote

0 answers

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grammar
In this question ,what is the correct approach to solve this question ,I generally take production and for that trying to produce given string ,but it takes long time , I found this from KLP Mishra-theory of computation ,pls help me m not getting this

set2018 asked in Theory of Computation Aug 19, 2017

124 views

3 votes

1 answer

27

precedence graph
please explain the concept of precedence graph in operating system concurrent processes.

set2018 asked in Operating System Jul 7, 2017

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