Data Storage Technologies and Networks

Question 1
Which of the following is also known as In-band visualization
Select one:
 a. Asymmetric virtualization
 b. Symmetric virtualization 
 c. None of a) and b) are true
 d. Both a) and b) are true.
Feedback
The correct answer is: Symmetric virtualization


Question 2
 ( i) Block based deduplication is a deduplication technology
(ii) File level single instance is a deduplication technology
Choose the correct option from following
Select one:
 a. None of (i) and (ii) are true
 b. (i) is true but (ii) is false
 c. (i) is false but (ii) is true
 d. Both (i) and (ii) is true 
Feedback
The correct answer is: Both (i) and (ii) is true

Question 3
The interval of time that might pass during a disruption before the quantity of data lost during that period exceeds the Business Continuity Plan's maximum allowable threshold  is called

Select one:
 a. Either of a) or b)
 b. Recovery Point Objective
 c. None of a) or b)
 d. Recovery Time objective 
Feedback
The correct answer is: Recovery Point Objective

Question 4
 A NAS solution is most appropriate for what type of data environment
Select one:
 a. Shared access 
 b. Remote access
 c. Parallel access
 d. Secured Access
Feedback
The correct answer is: Shared access


Question 5
A Cumulative backup,
Select one:
 a. Contains the changes since the last backup, of any type, whichever was most recent
 b. Is a type of incremental backup that contains changes made to a file since the last full backup.
 c. None of the above
 d. Is a backup of all data on the target volumes, regardless of any changes made to the data itself. 
Feedback
The correct answer is: Is a type of incremental backup that contains changes made to a file since the last full backup.


Question 6
Which of the following does not support storage virtualization
Select one:
 a. Server
 b. RAM
 c. Storage device
 d. Network 
Feedback
The correct answer is: RAM


Question 7
 (i) FCIP encapsulates the entire FC frame into IP packets
(ii) iFCP encapsulates the entire FC frame into IP packets
Choose the correct option from following
Select one:
 a. Both (i) and (ii) are false
 b. (i) is flase but (ii) is true 
 c. Both (i) and (ii) is true
 d. (i) is true but (ii) is false
Feedback
The correct answer is: (i) is true but (ii) is false


Question 8
In a thin provisioning extent size is 768 kb. If a file of 2400 kb is written then the space allocated will be
Select one:
 a. 4 MB
 b. 3 MB
 c. 2400 KB 
 d. 2 MB
Feedback
The correct answer is: 3 MB

Question 9
1.      (i) Thin provisioning is a capacity optimization technology
(ii) Deduplication is a capacity optimization technology
 Choose the correct option from following

Select one:
 a. Both (i) and (ii) is true
 b. (i) is true but (ii) is false 
 c. (i) is false but (ii) is true
 d. None of (i) and (ii) are true
Feedback
The correct answer is: Both (i) and (ii) is true


Question 10
In Fiber channel Data transport services which of the following supports connection oriented and circuit switched communication mode?
Select one:
 a. Class 2
 b. Class 1 
 c. Class 3
 d. All of the above
Feedback
The correct answer is: Class 1

Question 11
Which layers in Fiber channel are also refereed as Fibre Channel Physical levels (FC-PH Levels)
Select one:
 a. FC-0, FC-1, FC-3
 b. FC-2, FC-3, FC-4
 c. FC-1, FC-2, FC-3
 d. FC-0, FC-1, FC-2 
Feedback
The correct answer is: FC-0, FC-1, FC-2

Question 12
Which of the following can be refereed as SAN islands as there is limited connectivity and there is a degree of isolation
Select one:
 a. Enterprise SAN FC fabric
 b. All of the above 
 c. FC switched fabric
 d. FCAL
Feedback
The correct answer is: FCAL

Question 13
 (i) File system can be virtualized
(ii) Block device can be virtualized
Choose the correct option from following
Select one:
 a. None of (i) and (ii) are true
 b. (i) is true but (ii) is false
 c. (i) is false but (ii) is true
 d. Both (i) and (ii) is true 
Feedback
The correct answer is: Both (i) and (ii) is true

Question 14
Which of the following supports block storage over IP
Select one:
 a. FCIP
 b. All of the above
 c. iFCP
 d. iSCSI 
Feedback
The correct answer is: All of the above

Question 15
 In ‘Hot backup’

Select one:
 a. Production database server is not in air conditioned environment
 b. Production database is not interrupted 
 c. Backup server is not in air conditioned environment
 d. Production database is interrupted
Feedback
The correct answer is: Production database is not interrupted

Question 16
In Synchronous replication
Select one:
 a. Commit occurs just before the next transaction happen in each of the replicas
 b. Commit never occurs.
 c. Commit occurs after all of the replicas are updated 
 d. Commit occurs after each of the replicas are updated
Feedback
The correct answer is: Commit occurs after all of the replicas are updated

Question 17 Which of the following is not correct about SAN
Select one:
 a. It supports File based I/O
 b. It can support higher bandwidth due to fiber channel
 c. It supports isolation and filtering 
 d. It supports centralized storage and management
Feedback

The correct answer is: It supports File based I/O
Question 18
Which of the following does not affect the storage performance?
Select one:
 a. Thin LUN
 b. Cache 
 c. CPU speed
 d. RAID
Feedback
The correct answer is: CPU speed

Question 19
Which of the following is not a storage array based replication
Select one:
 a. Full-volume mirroring
 b. File-system snap shot 
 c. Pointer-based full-volume replication
 d. Pointer-based virtual replication
Feedback
The correct answer is: File-system snap shot


Question 20
When host deletes data, thin provisioned array may not recognize it and can still show the space as used. The technology that recognizes that data is deleted by host and subsequently release the extents from array to free pool is called
Select one:
 a. Zero space reclamation 
 b. All of the above
 c. Compression
 d. Mapping
Feedback
The correct answer is: Zero space reclamation

  Data Storage Technologies and Networks

Question 1
If read and write performance is the only criterion, which would you choose?
Select one:
 RAID 0
 RAID 1 
 RAID 5
 RAID 50
Feedback
Your answer is incorrect.
The correct answer is: RAID 0


Question 2
Question text
Which of the following RAID levels guarantees double disk failure protection?
Select one:
 Raid 5
 Raid 6 
 Raid 0+1
 Raid 1+0
Feedback
Your answer is correct.
The correct answer is: Raid 6


Question 3
Question text
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
Feedback
Your answer is correct.
The correct answer is: 30.72GB

Question 4
Question text
Identify a network file protocol in the below mentioned set
Select one:
 FC
 CIFS
 SCSI 
 NAS


The correct answer is: CIFS


Question 5
How many disk failure can disk failure can be withstood by RAID 6?
Select one:
 1
 2 
 3
 4
Feedback
Your answer is correct.
The correct answer is: 2


Question 6
Question text
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
The correct answer is: 4.4 Mbps


Question 7

Question text
Which version of NFS Mandates strong security
Select one:
 NFSv1
 NFSv2 
 NFSv3
 NFSv4
The correct answer is: NFSv4


Question 8
What level of RAID supported by some NAS systems?
Select one:
 RAID-6
 RAID-10
 RAID-5 
 None
Feedback
Your answer is incorrect.
The correct answer is: RAID-6


Question 9
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
Feedback
Your answer is correct.
The correct answer is: 9800 KB/s
Question 10
Best I/O Technique for low volume data transfer
Select one:
 Polling
 Interrupt Driven 
 DMA
 b and c
Feedback
Your answer is correct.
The correct answer is: Interrupt Driven


Question 11
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
Feedback
Your answer is incorrect.
The correct answer is: SAN


Question 12
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
Feedback
Your answer is correct.
The correct answer is: 130


Question 13
Wear leveling affects
Select one:
 Hard disk
 Flash
 Optical storage 
 RAM
The correct answer is: Flash


Question 14
PCI Bus Lines contains
Select one:
 Control Lines
 Data Lines
 Address Lines 
 All the above
The correct answer is: All the above


Question 15
A hard disk has 63 sectors per track, 10 platters each with 2 recording surfaces and 1000 cylinders. The address of a sector is given as a triple (c, h, s), where c is the cylinder number, h is the surface number and s is the sector number. Thus, the 0th sector is addressed as (0, 0, 0), the 1st sector as (0, 0, 1), and so on
The address <400,16,39> corresponds to sector number:

Select one:
 505035
 505036 
 505037
 505047
The correct answer is: 505037


Question 16
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
The correct answer is: All the above


Question 17
Which option is dedicated for file sharing?
Select one:
 bimodal
 network attached storage
 stealth 
 storage area network
The correct answer is: network attached storage


Question 18
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
The correct answer is: 125,829,120 bytes


Question 19
Without power down a machine how to remove hard drives?
Select one:
 fast booting
 hot swapping
 drive duplexing 
 drive mirroring
The correct answer is: hot swapping


Question 20
Do iSCSI storage mandatory to required switch?
Select one:
 Yes
 No
 None 
 a & b both
The correct answer is: No