Question 16: Which of the following represents the correct relationship in terms of access time w.r.t. memory hierarchy of a computer system?
Select one:
a. Registers < L1 Cache < L2 Cache < Primary memory < Disk Drive
b. Registers > L1 Cache > L2 Cache > Primary memory > Disk Drive
c. L1 Cache < L2 Cache < Registers < Primary memory < Disk Drive
d. L1 Cache < Registers < L2 Cache < Primary memory < Disk Drive
Ans: The correct answer is: Registers < L1 Cache < L2 Cache < Primary memory < Disk Drive
Question 17: In flash devices,
Select one:
a. all the mentioned choices are correct
b. individual block level
c. erase operation can be done at individual cell level only
d. individual page level only
Ans:The correct answer is: individual block level
Question 18: If a system has 4 data disk then How many disks are required if RAID DP is implemented
Select one:
a. Log 2(4)+1
b. 6
c. 5
d. 4
Ans: b (6)
Question 19: Which of the following statement(s) is correct for RAID 0:
Select one:
a. RAID 0 offers high reliability
b. it offers high data transfer rate
c. it uses synchronized disk access
d. none of the given choices are correct
Ans: b (it offers high data transfer rate)
Question 20: Which of the following shows correct relationship between different RAID levels in terms of write performance.
Select one:
a. RAID 0 < RAID 1 < RAID 10
b. RAID 1 < RAID 0 < RAID 1
c. RAID 1 < RAID 10 < RAID 0
d. RAID 10 < RAID 1 < RAID 0
Ans: RAID 1 < RAID 10 < RAID 0
Note: Write performance of RAID 0 has very good. RAID 10 has good performance, RAID 1 poor performance.
