Data Storage Exam

Multiple choice questions and Storage design calculations 

 

 

IT 337 Data Storage
Exam 3
Name: ________________________
Part I: Multiple Choice Questions (Each correct answer 8 points)
1. Which mechanism provides protection to ‘uncommitted data in cache’ against power failure?
A. Mirroring
B. Vaulting
C. Watermarking
D. Tiering
2. Which cable type provides minimum signal attenuation over long distance?
A. Twisted-pair copper
B. Coaxial copper
C. Single-mode optical
D. Multimode optical
3. What is an F_Port in FC SAN?
A. Switch port that connects an E_Port
B. Switch port that connects an N_Port
C. Node port that connects an N_Port
D. Node port that connects an E_Port
4. Which type of fabric login enables the exchange of upper layer protocol-related parameters between
N_Ports?
A. Fabric login
B. Port login
C. Process login
D. ULP login
5. Which is a benefit of zoning in FC SAN?
A. Isolates fabric services
B. Restricts RSCN traffic
C. Enables online volume expansion D. Provides non-disruptive data migration
6. Which is a benefit of VSAN?
A. Eliminates need for fabric login process
B. Provides higher network bandwidth
C. Improves security by isolating traffic between VSANs
D. Enables VSANs to share fabric zoning service
7. Which iSCSI host connectivity option offloads both iSCSI and TCP/IP processing from the host CPU?
A. Standard NIC with iSCSI initiator software
B. TOE NIC
C. iSCSI HBA
D. CNA
8. Which type of iSCSI name requires a registered domain name to generate unique iSCSI identifier?
A. eui
B. iqn
C. WWN
D. MAC
9. Which protocol encapsulates FC frames onto IP packet?
A. FCoE
B. iSCSI
C. FCIP
D. CIFS
10. Which is a feature of priority-based flow control?
A. A virtual link can be paused independently
B. All virtual links are paused together
C. Enables pausing virtual links based on their bandwidth
D. Enables pausing individual physical links based on their priority Part II – Storage Design Calculations (Each correct answer 20 points)
1. A telecom company, involved in mobile wireless services across the country, has about 5000
employees worldwide. This company has 7 regional offices across the country. Although the
company is financially doing well, they continue to feel the competitive pressure. As a result,
the company needs to ensure that the IT infrastructure takes advantage of fault tolerant
features.
Current Configuration and Challenges: The company uses different applications for communication, accounting, and management.
All the applications are hosted on individual servers with disks configured as RAID 0.
All financial activity is managed and tracked by a single accounting application. It is very
important for the accounting data to be highly available.
The application performs around 15% random write operations and the remaining 85% are
random reads.
The accounting data is currently stored on a 5-disk RAID 0 set. Each disk has an advertised
formatted capacity of 200 GB and the total size of their files is 730 GB.
The company performs nightly backups and removes old information — so the amount of
data is unlikely to change much over the next 6 months. The company is approaching the end of the financial year and the IT budget is depleted. It won’t
be possible to buy even one new disk drive.
Tasks:
1. Recommend a RAID level that the company can use to restructure their environment fulfilling
their needs.
2. Justify your choice based on cost, performance, and availability of the new solution.

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