Time Left - 15:00 mins
Mission ECIL Subjects Revision Test-4 (OS & Database )
Attempt now to get your rank among 474 students!
Question 1
RR scheduler maintains larger quantum then choose the wrong statement from the following.
Question 2
Assume time quantum of RR scheduler is greater than longest CPU burst time of all processes.
Which of the following is correct?
Which of the following is correct?
Question 3
What is the role of short term scheduler?
Question 4
Which of the following statements is correct for deadlock avoidance algorithm
Question 5
Which of the following is not the disk scheduling algorithm?
Question 6
What do you understand by busy waiting?
Question 7
We use Bernstein’s algorithm using concept of read-set and write-set to determine
Question 8
In a relation r, if every attribute is prime but key may not be simple then the relations is in.
Question 9
Consider the following characteristics of a disk system.
• 10 GB disk rotates at 10,000 rpm
• Data transfer rate of 107 bytes/sec
• Average seek time is 8 ms
• Block size is 32 KB
What is the average service time to retrieve a single disk block from a random location on the disk (in ms)?
• 10 GB disk rotates at 10,000 rpm
• Data transfer rate of 107 bytes/sec
• Average seek time is 8 ms
• Block size is 32 KB
What is the average service time to retrieve a single disk block from a random location on the disk (in ms)?
Question 10
Suppose that we have the following three tuples in a legal instance of a relation schema S with three attributes ABC (listed in order): (1,2,3), (4,2,3), and (5,3,3).Which of the following dependencies can you infer does not hold over schema S?
Question 11
Consider a B+ tree in which the maximum number of keys in a node is 7. Find the number of keys(minimum) in non-root node.
Question 12
A secondary index on a non candidate key:
Question 13
Which command undo all the updates performed by the SQL in the transaction?
Question 14
Which of the following operators is used to search a specified pattern in a column?
Question 15
Consider the following schedule.
r1(x), r1(y),w1(x),w2(x),w3(x)
Which of the following is true regarding the given schedule.
r1(x), r1(y),w1(x),w2(x),w3(x)
Which of the following is true regarding the given schedule.
- 474 attempts
- 1 upvote
- 5 comments
Tags :
GATE & PSU CSMock TestsOct 4GATE & PSU CS