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Questions by Tendua
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1
Made easy Linear algebra
Is it necessary that the lower triangular matrix should contain 1 as leading diagonal in LU decomposition? In the solution to this problem they have taken the triangular matrix diagonal as 1.
Is it necessary that the lower triangular matrix should contain 1 as leading diagonal in LU decomposition? In the solution to this problem they have taken the triangular ...
424
views
asked
Jan 30, 2017
Linear Algebra
linear-algebra
engineering-mathematics
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0
votes
0
answers
2
Hashing Question
Why 4 is multiplied in part. In the solution.
Why 4 is multiplied in part. In the solution.
836
views
asked
Jan 26, 2017
Programming in C
hashing
data-structures
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0
votes
1
answer
3
TOC Language Question
Question 1-> What Is the reversal of the Following DCFL language? L = { a^p b^q a^q b^p} Will this language will be DCFL? Question 2 - > IF I say DCFL is not closed under intersection will always means everytime union will be outside the DCFL? OR It does not means it always will be DCFL
Question 1- What Is the reversal of the Following DCFL language?L = { a^p b^q a^q b^p}Will this language will be DCFL?Question 2 - >IF I say DCFL is not closed under inte...
422
views
asked
Jan 26, 2017
Theory of Computation
theory-of-computation
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3
votes
1
answer
4
Virtual Gate Test Series: Computer Networks - Bandwidth
Consider data frames consisting of $20$ header and $1980$ data bits. Assume headers and retransmissions are overhead, ACK frames are negligible and NAK frames are $20$ bits. The error rate for data frames is $2$ percent and the error rate for NAK frames is negligible. ... that is wasted on overhead. $(A) 2\%$ $(B) 98\%$ $(C) 97\%$ $(D) 3\%$
Consider data frames consisting of $20$ header and $1980$ data bits. Assume headers and retransmissions are overhead, ACK frames are negligible and NAK frames are $20$ bi...
376
views
asked
Jan 25, 2017
Computer Networks
computer-networks
virtual-gate-test-series
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1
votes
2
answers
5
Virtual Gate Test Series: Computer Networks - Sliding Window
What is send as ack in sliding window? The next packet which the sender want to received or the packet right now sender received? I think the sender send the ack as the packet it has got right now. ? In sliding window protocol, sender's window size is ... $(B)$ Frame $n-1$ $(C)$ Frames $0$ to $n$ $(D)$ Frames $0$ to $n-1$
What is send as ack in sliding window? The next packet which the sender want to received or the packet right now sender received?I think the sender send the ack as the pa...
1.2k
views
asked
Jan 25, 2017
Computer Networks
computer-networks
sliding-window
virtual-gate-test-series
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1
votes
1
answer
6
Virtual Gate Operating system (Scan Algorithm)
Suppose that a disk drive has 5000 cylinders, numbered 0 to 4999. The drive is currently serving a request at cylinder 143, and the previous request was at cylinder 125. The queue of pending requests in order is: 86, 1470, 913, ... what is the total distance (in cylinders) that the disk arm moves to satisfy all the pending requests using SCAN schedule?
Suppose that a disk drive has 5000 cylinders, numbered 0 to 4999. The drive is currently serving a request at cylinder 143, and the previous request was at cylinder 125. ...
1.6k
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asked
Jan 22, 2017
Operating System
operating-system
disk-scheduling
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0
answers
7
Made Easy demo test
4 word instruction will take 4 memory refrences or 3 memory refrences ?
4 word instruction will take 4 memory refrences or 3 memory refrences ?
235
views
asked
Jan 9, 2017
CO and Architecture
co-and-architecture
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4
votes
1
answer
8
DAG compilers
How to find unnecessary production while optimising DAG. for ex- a = b * c d = b e = d * c b = e f = b + c g = f + d How many production need to be removed and how to find them . ?
How to find unnecessary production while optimising DAG. for ex-a = b * c d = b e = d * c b = e f = b + c g = f + dHow many production need to be removed and how to find ...
2.8k
views
asked
Dec 21, 2016
Compiler Design
compiler-design
code-optimization
directed-acyclic-graph
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0
votes
0
answers
9
BCD addition
HOW to add 123+789 in bcd using auxiliary flag? Know how to use auuxiliary flag ad do 2 bit bcd addition but if 3 bits are there then can we use auxiliary here?
HOW to add 123+789 in bcd using auxiliary flag? Know how to use auuxiliary flag ad do 2 bit bcd addition but if 3 bits are there then can we use auxiliary here?
575
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asked
Dec 11, 2016
Digital Logic
digital-logic
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0
votes
1
answer
10
Virtual Gate Test Series: Digital Logic - Ripple Carry Adder
Which of the following statements is/are true? S1: Carry-lookahead adder is faster compared to a ripple carry adder. S2: The cost is higher for a carry lookahead adder compared to a ripple carry adder. S1 only S2 only Both None of these
Which of the following statements is/are true?S1: Carry-lookahead adder is faster compared to a ripple carry adder.S2: The cost is higher for a carry lookahead adder comp...
949
views
asked
Dec 8, 2016
Digital Logic
digital-logic
adder
ripple-carry-adder
virtual-gate-test-series
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1
votes
2
answers
11
Logical and airthmatic left shift.
I just read that the logical and airthmatical left shift are same while there is a difference in case of right shift. https://en.wikipedia.org/wiki/Bitwise_operation (under Logical shift) Can understand how are they same. Like What is arithmetic left ... other hand, the logical left shift by 1 pos would be 10010010 but both are not same. any example on that.
I just read that the logical and airthmatical left shift are same while there is a difference in case of right shift.https://en.wikipedia.org/wiki/Bitwise_operation (unde...
1.6k
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asked
Dec 5, 2016
Digital Logic
co-and-architecture
digital-logic
bitwise
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1
votes
0
answers
12
Doubt on primary indexing and clustred index.
I have read this. - Clustered index are those in which data is arranged on fields so that it act as an index. like the phonebook. And in non-clustered index we make a new index outside and data and indexes are at different places ... a clustred index then what is clustred index that states that make a entry for unique keys only. Are they both the same?
I have read this. -Clustered index are those in which data is arranged on fields so that it act as an index. like the phonebook. And in non-clustered index we make a new...
650
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asked
Nov 24, 2016
Databases
indexing
databases
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3
votes
2
answers
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Concurrency Strict Schedule
Consider the following database schedule with two transactions T1T1 and T2T2. S=r2(X);r1(X);r2(Y);w1(X);r1(Y);a1;a2 where a1 and a2 stands for abort. Is It a strict schedule? Please explain why or why not?
Consider the following database schedule with two transactions T1T1 and T2T2.S=r2(X);r1(X);r2(Y);w1(X);r1(Y);a1;a2 where a1 and a2 stands for abort. Is It a strict sched...
647
views
asked
Oct 26, 2016
Databases
databases
concurrency
transaction-and-concurrency
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0
votes
0
answers
14
B+ tree Deletion
I found a PDF for the deletion of B + tree here : http://avid.cs.umass.edu/courses/445/f2008/17-tree-indexes-2.pdf I have probelm with the initial B+ tree itself. What I have studied till date is that every node has a copy in the leaf nodes. But here they have not take the copy for the nodes . like copy of 13 and 17 and 30 is not present in the leafs. What I am doing wrong here.
I found a PDF for the deletion of B + tree here : http://avid.cs.umass.edu/courses/445/f2008/17-tree-indexes-2.pdfI have probelm with the initial B+ tree itself. What I ...
1.4k
views
asked
Oct 14, 2016
Databases
b-tree
databases
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14
votes
1
answer
15
READ IT ONCE
Hi everyone. I kindly request all the people who don't find this relevant please ignore this post and follow yourself just read it once it may be helpful. It's 4 and we all are going to appear for the GATE paper on 6, so i felt to talk something about what ... JEET HAI " And we all are going to win our fear this time only. revise hard and just go, WIsh YoU BEst Of Luck .
Hi everyone. I kindly request all the people who don't find this relevant please ignore this post and follow yourself just read it once it may be helpful. It's 4 and we a...
653
views
asked
Feb 3, 2016
Others
study-resources
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29
votes
2
answers
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Please read if u feel like giving up .
well i don't want to write this, but can't stop myself from writting this . it's 18 jan. and if u are still thinking to cover the full syllabus, i will suggest u all please please please do not do it till u are 100% ... images. it's really the real life phases we all cross during life. we all are crossing the Dip. just think about it.
well i don't want to write this, but can't stop myself from writting this . it's 18 jan. and if u are still thinking to cover the full syllabus, i will suggest u all ple...
2.3k
views
asked
Jan 17, 2016
Study Resources
study-resources
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1
votes
1
answer
17
ace test series
what lexical analysis phase use. regular expression , regular grammar , ??
what lexical analysis phase use. regular expression , regular grammar , ??
927
views
asked
Jan 12, 2016
Compiler Design
compiler-design
lexical-analysis
ace-test-series
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0
votes
1
answer
18
compiler design
I want to know which grammars are used while various phases of compiler . like we use the regular languages for verification of tokens, and this the question why i want to know it . plz verify the question and answer given is B . and plz explain all the grammars used in various phases .
I want to know which grammars are used while various phases of compiler . like we use the regular languages for verification of tokens, and this the question why i want t...
723
views
asked
Jan 2, 2016
Compiler Design
compiler-design
grammar
test-series
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2
votes
2
answers
19
Sql group by clause?
How does group by works. ya it make groups of the data . and what i know it will group the data. what what i found on running on the online tutorials is that , the group by only shows me one entry for every distinct entry, can someone plz explain the way this group by works??
How does group by works. ya it make groups of the data . and what i know it will group the data. what what i found on running on the online tutorials is that , the group ...
820
views
asked
Dec 4, 2015
Databases
sql
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12
votes
0
answers
20
How to learn P and C in a easy covering the entire gate syllabus ??
if P and C is a problem to you , and u are looking forward to do probability and some maths. then i think i have an easy way and the most efficient also. and finally plz don't read this if u already have done it ... every pnc a try. and keep revising. If this helped u kindly upvote. so that more people can use this . Thnks
if P and C is a problem to you , and u are looking forward to do probability and some maths. then i think i have an easy way and the most efficient also. and finally plz ...
983
views
asked
Dec 3, 2015
Study Resources
combinatory
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