NPTEL Cloud Computing Week 1 And 2 Assignment Answers 2025

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NPTEL Cloud Computing Week 1 And 2 Assignment Answers 2025

1. Which of the following fall(s) under the “essential characteristics” of cloud computing?

A. Resource Pooling
B. Measured Service
C. Rapid Elasticity
D. Latency

✅ Answer: A, B, C
Explanation:
According to NIST, the essential characteristics of cloud computing include:

  • Resource Pooling: Shared resources for multiple clients
  • Measured Service: Usage is tracked and billed accordingly
  • Rapid Elasticity: Resources can be scaled rapidly
    Latency is not an essential characteristic; it’s a performance concern.

2. “Google Slides” is an example of

A. PaaS
B. IaaS
C. SaaS
D. FaaS

✅ Answer: C
Explanation:
Google Slides is a Software as a Service (SaaS) — end users access and use it over the internet without managing infrastructure.

3. Which of the following is/are public cloud platform(s)?

A. Windows Server Hyper-V
B. Google Cloud Interconnect
C. Amazon Virtual Private Cloud
D. Microsoft Azure

✅ Answer: D
Explanation:
Microsoft Azure is a public cloud platform.

  • Hyper-V is a virtualization platform.
  • Google Cloud Interconnect is a networking service, not a full cloud platform.
  • Amazon VPC is a private cloud environment within AWS.

4. VM technology allows multiple virtual machines to run on a single physical system.

A. True
B. False

✅ Answer: A
Explanation:
Virtualization allows multiple VMs (Virtual Machines) to run on a single hardware system, sharing resources efficiently.

5. Which one of the following is/are disadvantage(s) of cloud computing?

A. Resource pooling
B. It requires an always-on internet connection.
C. Ubiquitous
D. On-demand payment policy

✅ Answer: B
Explanation:
An always-on internet connection is required to access cloud services — this can be a limitation in offline environments. Others listed are advantages.

6. For less data-intensive applications, horizontal scale-out elasticity is the ideal solution.

A. True
B. False

✅ Answer: B
Explanation:
Horizontal scaling (adding more machines) is best for data-intensive or scalable applications. For lightweight apps, vertical scaling may suffice.

7. The combination of Service-Oriented Infrastructure and Cloud Computing realizes to_______

A. FTP
B. SNTP
C. XaaS
D. FaaS

✅ Answer: C
Explanation:
XaaS (Anything as a Service) emerges when service-oriented infrastructure integrates with cloud platforms to deliver all types of services.

8. What is/are the main requirement(s) of a Cloud Service Provider (CSP)?

A. Increase agility
B. Increase cost
C. Increase productivity
D. Decrease cost

✅ Answer: A, C
Explanation:
A CSP focuses on:

  • Increasing agility (faster deployment)
  • Boosting productivity (automated scaling and provisioning)
    Increasing cost is undesirable, and decreasing cost is a result, not a requirement.

9. PaaS (Platform as a Service) brings the benefits:

(i) Creation of software
(ii) Integration of web services and databases

A. Only (i)
B. Only (ii)
C. Both (i) and (ii)
D. Neither (i) nor (ii)

✅ Answer: C
Explanation:
PaaS provides tools to create, test, and deploy software, and also supports integration with databases and web services.

10. A ____________ is a distributed computer system that consists of a collection of interconnected stand-alone computers working together as an integrated computing resource.

A. Grid
B. Cluster
C. Cloud
D. Node

✅ Answer: B
Explanation:
A cluster refers to a group of computers that function as a single system.

  • Grid is more loosely coupled.
  • Cloud includes a broader set of services.
  • Node is an individual unit within the network.

NPTEL Cloud Computing Week 2 Assignment Answers

1. The public cloud has a risk of multi-tenancy.

A. True
B. False

✅ Answer: A
Explanation:
In a public cloud, multiple clients (tenants) share the same physical resources. This multi-tenancy can lead to security and privacy concerns if isolation between tenants fails.

2. Ubuntu Enterprise Cloud (UEC) is an example of

A. Private cloud
B. Public cloud
C. Hybrid cloud
D. Community Cloud

✅ Answer: A
Explanation:
UEC is a private cloud platform that allows organizations to create and manage cloud infrastructure within their own network, offering control and privacy.

3. Organization should consider – (i) Network Dependency and (ii) Risks from multi-tenancy while thinking of deploying an outsourced private cloud.

A. Only (i)
B. Only (ii)
C. Both (i) and (ii)
D. None of (i) and (ii)

✅ Answer: C
Explanation:
While using an outsourced private cloud, there is:

  • Network dependency (cloud access relies on the internet/network)
  • Multi-tenancy risk (especially if infrastructure is shared among clients, like in hosted private clouds)

4. Which of the following is/are XML parser API(s)?

A. XaaS (Anything as a Model)
B. DOM (Document Object Model)
C. CLI (Command Line Interface)
D. SLA (Service Level Agreement)

✅ Answer: B
Explanation:
DOM is an XML parser API that allows programs to read, manipulate, and navigate XML documents as a tree structure. Others are unrelated.

5. What is/are the main difference(s) between virtualization and dual boot?

A. No difference between dual boot and virtualization.
B. In virtualization, operating systems are not isolated from each other, but not in dual boot.
C. In a dual boot, both operating systems run simultaneously, but not in virtualization.
D. In virtualization, both operating systems run simultaneously, but not in dual boot.

✅ Answer: D
Explanation:

  • Virtualization allows multiple operating systems to run simultaneously on one machine.
  • In dual boot, you can run only one OS at a time — the other remains inactive.

6. In virtualization, a virtual machine monitor is also called

A. Hypervisor
B. Short-term Scheduler
C. Analyzer
D. Parser

✅ Answer: A
Explanation:
A hypervisor (or Virtual Machine Monitor) is a software layer that allows multiple operating systems to share a single hardware host.

7. Speed and flexibility are the two disadvantages of hardware-assisted virtualization.

A. True
B. False

✅ Answer: A
Explanation:
Hardware-assisted virtualization can sometimes lead to reduced speed and lower flexibility compared to software-based solutions, especially in older hardware or poorly optimized systems.

8. The following problems are addressed through Web services:

A. Firewall
B. Interoperability
C. Complexity
D. Speed

✅ Answer: A, B, C
Explanation:
Web services help with:

  • Firewall traversal via standard HTTP protocols
  • Interoperability across platforms and languages (e.g., XML/SOAP)
  • Complexity by simplifying distributed application integration
    Speed is not a guaranteed benefit.

9. A web service can be discovered using

A. SMS
B. HTTP
C. SMTP
D. UDDI

✅ Answer: D
Explanation:
UDDI (Universal Description, Discovery, and Integration) is a platform-independent protocol for discovering web services.

10. Service-Oriented Architecture (SOA) consists of relationships between:

A. Two entities (a service provider and a requestor)
B. Two entities (a service provider and a broker)
C. Three entities (a service provider, a service requestor, and a broker)
D. Three entities (a service provider, a service requestor, and a hypervisor)

✅ Answer: C
Explanation:
SOA involves:

  • Service Provider: Offers services
  • Service Requestor: Requests services
  • Service Broker: Facilitates service discovery and binding

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