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Answers by Sanandan

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123
NIELIT 2016 MAR Scientist B - Section C: 8
When we move from the outermost track to the innermost track in a magnetic disk, then density(bits per linear inch) increases. decreases. remains the same. either remains constant or decreases.
When we move from the outermost track to the innermost track in a magnetic disk, then density(bits per linear inch) increases.decreases.remains the same.either remains co...
0 votes
130
NIELIT 2017 DEC Scientist B - Section B: 41
Which of the following is equivalent regular expressions? $((01)^*(10)^*)^*$ $(10+01)^*$ $(01)^*+(11)^*$ $(0^*+(11)^*+0^*)^*)$ (i) and (ii) (ii) and (iii) (iii) and (iv) (iv) and (i)
Which of the following is equivalent regular expressions?$((01)^*(10)^*)^*$$(10+01)^*$$(01)^*+(11)^*$$(0^*+(11)^*+0^*)^*)$(i) and (ii)(ii) and (iii)(iii) and (iv)(iv) and...
1 votes
134
Andrew S. Tanenbaum (OS) Edition 4 Exercise 2 Question 27 (Page No. 175)
In a system with threads, is there one stack per thread or one stack per process when user-level threads are used? What about when kernel-level threads are used? Explain.
In a system with threads, is there one stack per thread or one stack per process when user-level threads are used? What about when kernel-level threads are used? Explain....
1 votes
137
made esay systeam call
1 votes
139
testbook test series
which of the statements are correct? A a clustered index offers much better performance than unclustered index for range queries B a clustered index istypically less expensive to manage than unclustered index
which of the statements are correct?A a clustered index offers much better performance than unclustered index for range queriesB a clustered index istypically less expens...
0 votes
140
Self Doubt
1.A primary key cannot be NULL (Any of its attributes can’t be NULL) 2.can candidate key be NULL(All attr) (Other than primary keys i,e alternate keys) 3.can some attributes of candidate key be NULL?? which of these are true . false
1.A primary key cannot be NULL (Any of its attributes can’t be NULL)2.can candidate key be NULL(All attr) (Other than primary keys i,e alternate keys)3.can some attribu...
0 votes
142
Self Doubt
Is the following schedule conflict serializable T1 T2 T3 W(X) commit R(X) W(X) R(X) W(X) commit W(X) commit
Is the following schedule conflict serializableT1T2T3W(X) commit R(X) W(X) R(X) W(X) commit W(X) commit
0 votes
145
Made Easy Test Series:Relational Algebra
... this implication holds true?? Selection operation is commutative. But is two project operation can be merge in one project operation? Can project operation removes duplicates too??
$\pi _{A_{1}}\left ( \pi _{A_{2}}\left ( \sigma _{C_{1}}\left ( \sigma _{C_{2}} \left ( R_{1} \right )\right ) \right ) \right )\rightarrow \pi _{A_{1}}\left ( \sigma _{C...
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