Question 11: Choose the correct statement
Select one:
a. $ per I/O cost for flash drive more than RAM
b. $ per I/O cost for flash drive is more than Hard disk
c. $ per I/O cost for flash drive is less than Hard disk Correct
d. $ per I/O cost for flash drive is more than the magnetic tape
Ans: $ per I/O cost for flash drive is less than Hard disk
Question 12: Which of the following is not a typical Disk Drive Interface?
Select one:
a. SCSI
b. SAS
c. SATA
d. Ethernet
Ans:
The correct answer is: Ethernet
Question 13: Which of the following is FALSE for synchronous replication techniques
Select one:
a. Provides zero data loss
b. Writes are treated complete once it is completed on source array
c. May have performance implication on application
d. None of the given choices are correct
Ans: b. Writes are treated complete once it is completed on source array
Question 14:If a disk is operating at 12000 RPM , its average rotational latency is
Select one:
a. 2 mili seconds
b. 12 mili seconds
c. 5 Mili second
d. 2.5 mili seconds
Ans: The correct answer is: 2.5 mili seconds
(1 / (SpindleSpeed / 60)) * 0.5 * 1000 . Which factors down to this much simpler formula: 30000 / SpindleSpeed
Rotational speed = 12000 RPM. Thus, the time for one rotation is
(1 minute/12000 rotations) * (60 seconds/1 minute) = (60 seconds/12000 rotations)= 2.5 ms per rotation
Question 15: Device driver should be aware of geometry of disk if:
Select one:
a. It uses File system addressing
b. It uses LBA addressing Incorrect
c. It uses Physical addressing
d. It uses CHS addressing
Ans: The correct answer is: It uses CHS addressing . CHS ( cylinder Head Sector) addressing
