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+1
vote
1
miss penalty
Effective address time for a cache comprising of L1 and L2 cache =9ns hit ratio of L1 cache = 0.8 hit ratio of L2 cache = 0.9 memory access time =100ns Miss penalty of L1 cache = 25ns Access time for L1 and L2 cache are x and y ns; let z=x+y; what’s z?? i am getting 20.33 but given answer is different!
answered
Nov 29, 2018
in
CO and Architecture

124
views
+1
vote
2
#CO DOUBT_RC Test series
pls explain!
answered
Nov 29, 2018
in
CO and Architecture

64
views
+1
vote
3
polling_RC test series
A keyboard must be interrogated atleast 10 times per second to make sure that no keystroke by the user is missed.Assume that each such interrogation and data transfer takes 800 clock cycles in a processor with 1 GHz clock.what % of cpu time is spent in polling the keyboard.(answer upto 4 decimal places).
answered
Nov 28, 2018
in
CO and Architecture

32
views
+1
vote
4
ACE test series
answered
Nov 20, 2018
in
CO and Architecture

52
views
0
votes
5
linear algebra
The Eigen Vectors of the Matrix $A=\begin{bmatrix} 3 &4 \\ 4 &3 \end{bmatrix}$ are $\begin{bmatrix} a\\ 1 \end{bmatrix},\begin{bmatrix} 1\\ b \end{bmatrix}$ the $a+b=?$ Answer is given (a+b)=0 how ?????
answered
Oct 30, 2018
in
Linear Algebra

54
views
engineeringmathematics
linearalgebra
eigenvectors
0
votes
6
function
Given that the function f and g , fog is composition of function, also f and fog is onetoone functions , then what can be said about g ? A) g is onetoone function B)can't say anything about g
answered
Oct 30, 2018
in
Set Theory & Algebra

28
views
+2
votes
7
Positive Divisors
How many positive divisors does $2000$ have? $A)12$ $B)20$ $C)30$ $D)15$
answered
Oct 29, 2018
in
Combinatory

47
views
discretemathematics
permutationandcombination
0
votes
8
self doubt
How much storage is needed to represent a simple graph with n vertices and m edges using a) adjacency lists? b) an adjacency matrix? c) an incidence matrix? Rosen_discrete_mathematics section 10.4 question 70. thankyou.
answered
Oct 29, 2018
in
Mathematical Logic

14
views
discretemathematics
+1
vote
9
Test series
The symbol form of predicates :x is the father of the mother of y
answered
Oct 29, 2018
in
Mathematical Logic

32
views
+2
votes
10
PROBABILITY
HOW TO DECIDE OR CHECK??
answered
Oct 28, 2018
in
Probability

72
views
+1
vote
11
Dbms test1
answered
Oct 28, 2018
in
Databases

42
views
databases
hashing
0
votes
12
Time Complexity
how to compute time complexity of this kind of recurrence relation T(n)=T(n/2)+T(n/4)+T(n/8)+n
answered
Oct 27, 2018
in
Algorithms

126
views
timecomplexity
algorithms
asymptoticnotations
recurrence
+1
vote
13
GATE 2014 MA Eigen Values
answered
Oct 26, 2018
in
Linear Algebra

55
views
0
votes
14
Self Doubt
A relation R is in 2NF if every nonprime attribute of R is fully functionally dependent on every key of R true or false R(A,B,C) F {A>B,B>C} Here key = A R is in 2NF So is C is fully functional dependent on every key here ?. It is not dependent on key infact ?
answered
Oct 24, 2018
in
Databases

69
views
databases
databasenormalization
functionaldependencies
0
votes
15
draw conclusion (logic)
What is the correct approach for drawing a conclusion from P1: If it rains ,the match will not be played . P2: The match was played A) it rains B) it did not rain C) it either rain or did not rain D) None
answered
Oct 23, 2018
in
Mathematical Logic

25
views
0
votes
16
self doubt.
who is responsible for changing the mode bit of the system. Is it the privileged or the nonprivileged instruction? some authors are writing that it can be privileged or nonprivileged instruction if it is nonprivileged instruction then a process running in user mode ... it should not be running in kernel mode? so in conclusion what is needed to shift from kernel mode to user mode?
answered
Oct 23, 2018
in
Operating System

18
views
0
votes
17
SQL Query
What is the output of the following SQL query? Select * from student S where not exists (select * from course C where C.ID= S.ID and C.GRADE > 40) (a) Displays all students who never got a grade above 4.0 (b) Displays all students who never got a grade ... all students who got a grade above 4.0 (d) Displays all students who got a grade less than 4.0 How is option A and D different?
answered
Oct 23, 2018
in
Databases

61
views
+1
vote
18
valid or invalid
how to approach these types of question : If you work hard & you are talented then you will became musician. If you became musician , then you will be happy. You work hard. You are not talented . Therefore I will be happy.
answered
Oct 23, 2018
in
Mathematical Logic

37
views
0
votes
19
DBMS self doubt : Cardinality
What is the Cardinality ratio from student to course for the following question? " Every student needs to register one course and each course is registered by many students"
answered
Oct 22, 2018
in
Databases

54
views
0
votes
20
Process Scheduling
answered
Oct 22, 2018
in
Operating System

75
views
processschedule
priorityqueue
+1
vote
21
Multilevel paging
Consider a machine with byte addressable memory 32 bits virtual addresses, 32 bits physical addresses and 4 KB page size. If a twolevel page table system is used where each page table occupies one page and page table entries of 4 B each. How to calculate the size of 1st level page table & 2nd level page table(s) ? Also how to calculate memory overhead?
answered
Oct 22, 2018
in
Operating System

713
views
paging
multilevelpaging
memorymanagement
operatingsystem
pagetable
0
votes
22
made easy
Which of the following should be allowed only in kernel mode? 1.Changing mapping from virtual to physical address. 2.Mask and unmask interrupts. 3.Disabling all interrupts. 4.Reading status of processor. 5.Reading time of day (a)1,2 and 3 (b) 1,2,4 and 5 (c) 2,3 and 5 (d) All of the above
answered
Oct 22, 2018
in
Operating System

64
views
0
votes
23
graph theory(basic doubt,kenneth rosen)
Q.1) for which value of n are these graph are bipartite?? a)$C_{N}$ (cycle graph having "n" vertices) (b) $W_{N}$ (wheel graph having "n" vertices)
answered
Oct 21, 2018
in
Graph Theory

66
views
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