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WorksheetsCloud Computing-Model Exam-II-PART-B
Total questions: 15
Worksheet time: 29mins
Name
Class
Date
1.
A start-up company has decided to provide IAAS and initially they have the following<br />requirement<br />a. Need to run multiple OS on individual Machines.<br />b. How is the above requirement achieved and Who will manage this set-up ?<br />c. OS need to migrate from one machine to another, who will manage this?<br />d. With the available limited number of systems, - CPU, Memory, I/O needs to be shared<br />among many users, how is this set-up done.<br />e. Need an open source which performs the “Hardware assisted virtualization”<br />Suggest and Explain the solution for the above requirements .
a)
Software as a solution
b)
Platform as a solution
c)
virtualization as a solution
d)
none of the mentioned
2.
What are some open source cloud computing platform databases
a)
MongoDB
b)
CouchDB
c)
LucidDB
d)
all of the mentioned
3.
Are Type-1 Hypervisors better in performance than Type-2 Hypervisors
a)
true
b)
false
4.
You have been asked to design a “Open File System” which is derived from GFS / HDFS architecture with following variances – chunk size of 100 MB, block size of 1 MB. A file of size 1 TB needs to be stored on this file system. <br />a) How many chunks will be required to store the file?
a)
10000
b)
11000
c)
9000
d)
none of the mentioned
5.
You have been asked to design a “Open File System” which is derived from GFS / HDFS architecture with following variances – chunk size of 100 MB, block size of 1 MB. A file of size 1 TB needs to be stored on this file system. How many chunk servers will be needed, if each server hosts 1000 blocks?
a)
500
b)
1000
c)
1500
d)
none of the mentioned
6.
You have been asked to design a “Open File System” which is derived from GFS / HDFS architecture with following variances – chunk size of 100 MB, block size of 1 MB. A file of size 1 TB needs to be stored on this file system. How many chunk servers will be needed, if each server hosts 100GB of file?
a)
12
b)
10
c)
9
d)
none of the mentioned
7.
You have been asked to design a “Open File System” which is derived from GFS / HDFS architecture with following variances – chunk size of 100 MB, block size of 1 MB. A file of size 1 TB needs to be stored on this file system. How many chunk servers will be needed, if the file is replicated thrice on chunk servers capable of hosting 200 GB on each?
a)
10
b)
15
c)
20
d)
none of the mentioned
8.
Kayvon Inc. (KayvonInc.com) is a local startup that has been asked by the city to monitor and record near misses and accidents between cars, bicyclists and pedestrians 24 hours per day, 7 days per week, 365 days per year. Kayvon Inc. (KI) is planning to deploy video cameras and dedicated computing at each busy intersection in the city. KI plans to capture video at a sustained frame grab rate of 20 frames per second, 24 hours per day. They will provide privacy to drivers, cyclists and pedestrians by denaturing the video at the intersection, before it is stored. Since the bandwidth from the intersection to the cloud is limited, KI plans to process the streams of data at the intersection to identify near misses and accidents. They will then send the data for just the “interesting” cases to the cloud for storage and potential further analysis.<br />We know that cloud computing offers various benefits and features to users. For each benefit listed below, indicate whether you believe it would be important to Kayvon Inc. Whether VM velocity is beneficial or not in this context?
a)
YES
b)
NO
9.
Kamal’s job is to convert an in-house web application into an elastic cloud application. Kamal’s design has a load balancer machine on the network path of each http request immediately before the web server machines he plans to dynamically rent. Alicia, a CMU student interviewing the day of Kamal’s design review, comments that this load balancer machine might not be needed. Give at least one reason that Alicia is correct.
a)
The application may not need to change the number of servers quickly, so it might use DNS to distribute lists of servers to client machines, so that each client selects a possibly different server. This eliminates a load balancing machine, by doing it in the client.
b)
Cloud computing has elasticity to accommodate bursty load when the bursts of each use of the cloud are small compared to the total and independent of each other. On Cyber Monday and Single’s Day these retailers experience huge bursts, all on the same day. It is highly unlikely that the total of all online retail business on these days is small and independent of the rest of the work in the cloud.
c)
The computing infrastructure built to handle these rare, massively busy, days will not be fully utilized during the rest of the year. This is a good reason for an online retailer to also offer to rent computers to outside companies.
d)
none of the mentioned
10.
Alicia also mentions that if Kamal wants to have a simple cloud application, then his web application might have problems implementing its backend database. Give at least one reason that the backend database might be a difficult part of Kamal’s elastic cloud application.
a)
If the application is read-only with a full copy of all catalogue data in each server, but places an order in the common backend database, the order taking application may update the same inventory records, which could be serialized under a single lock. This database might therefore be limited to the number of updates a single thread can do, limiting the elastic scaling of this application.
b)
The application may not need to change the number of servers quickly, so it might use DNS to distribute lists of servers to client machines, so that each client selects a possibly different server. This eliminates a load balancing machine, by doing it in the client
c)
Load balancing might be simple enough to do in the network router device coming into the data center, and not need a dedicated machine.
d)
none of the mentioned
11.
Swiggy.in formed a cloud for its all branches but due to its limited recources it obtained the services of AWS for extended provisioning and thus modified its cloud; The cloud so formed is the example of
a)
Private Cloud
b)
Public Cloud
c)
Hybrid Cloud
d)
Community Cloud
12.
cloud computing is also a good option when the cost of infrastructure and management is________
a)
Low
b)
High
c)
Moderate
d)
none of the mentioned
13.
______refers to the location and management of the cloud's infrastructure
a)
service
b)
deployment
c)
Application
d)
none of the mentioned
14.
IaaS offer non-standard machine to customers
a)
true
b)
false
c)
it depends upon use
d)
none of the mentioned
15.
which of the architectural layer is used as front end in cloud computing
a)
client
b)
cloud
c)
soft
d)
all of the mentioned
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