Data Storage Technologies Questions and Answers
Data Storage Technologies Questions and Answers contain set of 43 Data Storage Technologies MCQs with answers which will help you to clear beginner level quiz.
Question 1
Which of the following RAID levels gives maximum usable capacity?
Select one:
A. RAID 0
B. RAID 5
C. RAID 6
D. RAID 1
Correct answer : RAID 0
Question 2
Which logical operation is used for computing parity?
Select one:
A. Exclusive OR
B. Exclusive NOR
C. Inclusive NOR
D. Inclusive OR
Correct answer : Exclusive OR
Question 3
Which of the following RAID implementation does not allow data recovery in case of disk failure?
Select one:
A. RAID 5
B. RAID 1
C. RAID 0
D. RAID 10
Correct answer : RAID 0
Question 4
What is a hot Spare?
Select one:
A. It is a spare drive within a RAID array.
B. It is a drive that can be plugged in while the Storage array is powered on
C. It is an extra drive provided by the vendor to be plugged in in case of disk failure
D. It is a disk that is over heated
Correct answer : It is a spare drive within a RAID array.
Question 5
What is a blast zone in RAID?
Select one:
A. It is the portion of disk burnt due to overheating
B. It is the area of impact when data is lost from a failed RAID set.
C. It is the portion platter damaged due to head crash
D. It is the area of impact when the disk explodes.
Correct answer : It is the area of impact when data is lost from a failed RAID set.
Question 6
Which of the following statement is true for RAID 5?
Select one:
A. RAID 5 uses block level striping with distributed parity
B. RAID 5 is a hybrid of mirror sets and stripe sets
C. RAID 5 uses block level striping with double distributed parity
D. RAID 5 uses block level striping with a dedicated parity drive
Correct answer : RAID 5 uses block level striping with distributed parity
Question 7
Journaling is preferred for
Select one:
A. Storing metadata
B. Storing logs
C. Faster file system recovery
D. Faster write operation
Correct answer : Storing Faster file system recovery
Question 8
Examples of Journaling file system
Select one:
A. JFS
B. Ext2
C. Ext3
D. UFS
Correct answer : Ext3
Question 9
Wear leveling affects
Select one:
A. RAM
B. Optical storage
C. Hard disk
D. Flash
Correct answer : Flash
Question 10
Every File or directory has unique
Select one:
A. Inode
B. Directory
C. Pathname
D. Inode & pathname
Correct answer : Inode & pathname
Question 11
Which of the following is not a non volatile storage device?
Select one:
a. Hard Disk
b. Memory Stick
c. NVRAM
d. Random Access Memory
Correct answer : Random Access Memory
Question 12
Solid State devices are best suited for ______________ writes & _________________ reads.
Select one:
A. Frequent Random, Frequent Sequential
B. Frequent Sequential, Infrequent Random
C. Infrequent Sequential , Frequent Random
D. Infrequent Random, Frequent Sequential
Correct answer : Infrequent Sequential , Frequent Random
Question 12
Which of the following is sequential access storage device?
Select one:
A. CD-ROM
B. Main Memory
C. Hard Disk
D. Tape Cartridge
Correct answer : Tape Cartridge
Question 13
A “Logical Volume Manager” helps in
Select one:
A. Virtualizing storage
B. provide direct access to the underlying storage
C. Manage disk space efficiently without having to know the actual hardware details
D. Both storage virtualization and efficient disk space management
Correct answer : Both storage virtualization and efficient disk space management
Question 14
Physical Volumes are
Select one:
A. None of these mentioned
B. Disk or disk partitions used to construct logical volumes
C. The space on a physical storage that represent a logical volume
D. A bunch of disks put together that can be made into a logical volume
Correct answer : Disk or disk partitions used to construct logical volumes
Question 15
Which of the following are true. Logical Volumes _____
Select one:
A. Can span across multiple volume groups
B. Can span across multiple physical volumes
C. Can be constructed only using a single physical disk
D. None these mentioned
Correct answer : Can span across multiple physical volumes
Question 16
Fileystem is created using command
Select one:
A. Mkfs
B. Fsck
C. defrag
D. Format
Correct answer : Mkfs
Question 17
Concatenation is the technique of
Select one:
A. Increasing the size of a volume by adding more disks
B. Adding physical volumes together to make a volume group
C. writing a block of data onto one disk and then a block onto another disk in an alternate fashion
D. Filling up a physical volume completely before writing to the next one in a logical volume
Correct answer : Filling up a physical volume completely before writing to the next one in a logical volume
Question 18
A MySQL database is involved in persisting random writes to the storage medium quantified by Kilobytes of block data. Which of the below is the suitable metric to measure the performance of the disk operations
Select one:
A. Input Output Operations Per Second
B. Mega Bytes Per Second
Correct answer : Input Output Operations Per Second
Question 19
Which of the below attributes to the latency in the data transfer between application and storage Hard disks?
Select one:
A. Head Seek Time between the Platters
B. None of these
C. Cache Miss
D. Disk Controller Queuing
Correct answer : Cache Miss
Question 20
MLC has _______________ PE cycles and _______________ in performance compared to SLC SSDs. Where – MLC- MultiLevelCell ; SLC-SingleLevelCell
Select one:
A. More, Low
B. Less , Low
C. Less , High
D. More ,High
Correct answer : Less , Low
Question 21
In a Flash Memory, how is the content of a cell changed to 1 from 0?
Select one:
A. By erasing the content of the cell
B. By block erase operation and rewriting the content of the block
C. By writing 1 to the cell
D. By erasing the content of the cell before writing 1
Correct answer : By block erase operation and rewriting the content of the block
Question 22
Which of the following statement is true for a Single Level Cell?
Select one:
A. It has the longest life span
B. It allows more data storage
C. Singe level cells are cheap
D. It offers medium performance as compared to other formats
Correct answer : It has the longest life span
Question 23
Which of the following is applicable to Enterprise class solid state devices?
Select one:
A. They have more over provisioned capacity
B. Warranty terms are same as all Solid state devices
C. They have the simple controller firmware
D. They have same amount of cache is not less than consumer class devices
Correct answer : They have more over provisioned capacity
Question 24
Which of the following statement is true about Striping?
Select one:
A. A stripe is stored on a single disk
B. Striping reduces the disk performance
C. Striping helps in data recovery
D. Striping parallelises I/O operation
Correct answer : Striping parallelises I/O operation
Question 25
Do iSCSI storage mandatory to required switch?
Select one:
Yes
No
None
a & b both
Correct answer : No
Question 26
Best I/O Technique for low volume data transfer
Select one:
Polling
Interrupt Driven
DMA
b and c
Correct answer : Interrupt Driven
Question 27
What is the memory bandwidth requirement of a machine executing 4*105 instructions per second, average instruction size of 3.8 bits and 7.2 bits of average operand size per instruction?
Select one:
1.52 Mbps
0.72 Mbps
2.88 Mbps
4.4 Mbps
Correct answer : 4.4 Mbps
Question 28
Which version of NFS Mandates strong security
Select one:
NFSv1
NFSv2
NFSv3
NFSv4
Correct answer : NFSv4
Question 29
Estimate the sustained transfer rate of a drive if disk drive spins at 7200 RPM, has a sector size of 512 bytes, and holds 160 sectors per track around
Select one:
9400 KB/s
9600 KB/s
9800 KB/s
10000 KB/s
Correct answer : 9800 KB/s
Question 30
Which storage Technology uses low level disk drive access commands like READ block, WRITE block and READ capacity
Select one:
NAS
SAN
DAS
All the above
Correct answer : SAN
Question 31
How do we meet memory bandwidth requirements?
Select one:
L1 cache, L2 cache and DRAM
Direct Attached Storage and Network Storage
Archival Storage
All the above
Correct answer : All the above
Question 32
PCI Bus Lines contains
Select one:
Control Lines
Data Lines
Address Lines
All the above
Correct answer : All the above
Question 33
How many disk failure can disk failure can be withstood by RAID 6?
Select one:
1
2
3
4
Correct answer : 2
Question 34
Which of the following model makes the server to keep track of cached copies and notifies them on update
Select one:
Asynchronous writing model
Cache verification model
Callback model
Leasing model
Correct answer : Callback model
Question 35
What is the capacity of the disk with 5 platters. 2 surfaces per platter, 20000 tracks per surface, 300 sectors per track and 512 bytes per sector
Select one:
30.72GB
24.40GB
21.40GB
15.16GB
Correct answer : 30.72GB
Question 36
If average latency is 2.99 ms and average seeks time is 4.7 ms, then IOPS of the disk will be?
Select one:
129
130
128
131
Correct answer : 130
Question 37
A certain hard disk has 16 cylinders, 480 tracks per cylinder, 32 sectors per track, and 512 bytes per sector. What is its storage capacity?
Select one:
125,829,120 bytes
125,929,120 bytes
125,729,120 bytes
125,629,120 bytes
Correct answer : 125,829,120 bytes
Question 38
If MTTF of a disk is 80000hrs what us MTTF of an array of 8 disks
Select one:
640000 hrs
10000 hrs
80000 hrs
40000 hrs
Correct answer : 10000 hrs
Question 39
Identify a network file protocol in the below mentioned set
Select one:
FC
CIFS
SCSI
NAS
Correct answer : CIFS
Question 40
Which option is dedicated for file sharing?
Select one:
bimodal
network attached storage
stealth
storage area network
Correct answer : network attached storage
Question 41
If read and write performance is the only criterion, which would you choose?
Select one:
RAID 0
RAID 1
RAID 5
RAID 50
Correct answer : RAID 0
Question 42
Which of the following RAID levels guarantees double disk failure protection?
Select one:
Raid 5
Raid 6
Raid 0+1
Raid 1+0
Correct answer : Raid 6
Question 43
In SAN network which type of switch used typically?
Select one:
Director switch
Intelligent switch
IP switch
Hub
Correct answer : Intelligent switch
