Cloud Computing | Week 3
Session: JAN-APR 2023
Course Name: Cloud Computing
Course Link: Click Here
These are Nptel Cloud Computing week 3 Assignment 3 Answers
Q1. Which of the following is/are properties of Web Service SLAs?
A. SLA automation is required for negotiation, provisioning, service delivery and monitoring.
B. The QoS parameters are response time, SLA violation rate for reliability, availability and cost of service.
C. UDDI (Universal Description Discovery and Integration) is used for resource allocation.
D. The QoS parameters are related to security, privacy, trust, management, etc.
Answer: A, B
Q2. A task takes time T in a uniprocessor system. In a parallel implementation, the task runs on P processors parallelly. The parallel efficiency is Eff, where 0<Eff<1. What is the time taken by each processor (M) in this implementation?
A. M=T
B. M = T/(EffxP)
C. M=T/P
D. M=(TxEff)/P
Answer: B. M = T/(EffxP)
These are Nptel Cloud Computing week 3 Assignment 3 Answers
Q3. Row-oriented storage is optimal for transaction processing applications.
A. True
B. False
Answer: A. True
Q4. Which of the following is/are the SLA requirement(s) for PaaS cloud delivery model?
A. Transparency
B. Data Retention and Deletion
C. Privacy
D. Regulatory compliance
Answer: A, C, D
These are Nptel Cloud Computing week 3 Assignment 3 Answers
Q5. In a cloud, total service uptime is 175 minutes and availability of the service is 0.85. What is the service downtime?
A. 55 minutes
B. 148.75 minutes
C. 26.25 minutes
D. 45 minutes
Answer: C. 26.25 minutes
Q6. Which of the following database system/architecture follow(s) Quorum protocol for a large number of concurrent reads & writes?
A. BigTable
B. Dynamo
C. Datastore
D. Google File System (GFS)
Answer: B. Dynamo
These are Nptel Cloud Computing week 3 Assignment 3 Answers
Q7. Match the components of OpenStack with their functions.
A. 1->B, 2->D, 3->A, 4->C
B. 1->B, 2->A, 3->D, 4->C
C. 1->C, 2->B, 3->D, 4->A
D. 1->D, 2->A, 3->B, 4->C
Answer: D. 1->D, 2->A, 3->B, 4->C
Q8. Let D(t) and R(t) be the instantaneous demand and resources at time t respectively. If demand is exponential (D(t)=e’), any fixed provisioning interval (tp) according to the current demands will fall linearly behind.
A. TRUE
B. FALSE
Answer: B. FALSE
These are Nptel Cloud Computing week 3 Assignment 3 Answers
Q9. Which of the following statement(s) regarding OpenStack storage is/are wrong?
A. Object storage is managed by Cinder
B. Both ephemeral storage and block storage are accessible from within VM
C. Block storage persists until VM is terminated
D. Ephemeral storage is used to run operating system and/or scratch space
Answer: A, C
Q10. Statement 1: Multiple KPIs are aggregated to SLA.
Statement 2: SLA contains SLO.
A. Both statement 1 and 2 are correct
B. Statement 1 is correct and statement 2 is incorrect
C. Statement 2 is correct and statement 1 is incorrect
D. Both statement 1 and 2 are incorrect
Answer: C. Statement 2 is correct and statement 1 is incorrect
These are Nptel Cloud Computing week 3 Assignment 3 Answers
All weeks of Cloud Computing: Click here
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Session: JULY-DEC 2022
Course name: Cloud Computing NPTEL
Link to Enroll: Click Here
These are Nptel Cloud Computing week 3 Assignment 3 Answers
Q1. Which of the following is/are NOT SLA requirement(s) of PaaS cloud delivery model?
a. Privacy
b. Data Retention and Deletion
c. Machine-Readable SLAs
d. Certification
Answer: c. Machine-Readable SLAs
Q2. Which of the following is/are true regarding penalty cost? (Here D(t) and R(t) are instantaneous demand and resources at time t.)
a. Penalty cost ox ID()/R()|dt
b. If demand is flat, penalty is equal to 0.
c. If demand is exponential (D(t)=e’), any fixed provisioning interval (tp) according to the current demands will fall linearly behind.
d. The penalty cost for exponential demand is exponential.
Answer: b, d
Q3. Row-oriented storage is efficient for data-warehouse workloads.
a. TRUE
b. FALSE
Answer: b. FALSE
These are Nptel Cloud Computing week 3 Assignment 3 Answers
Q4. Which of the following is/are example(s) of cloud SLA(s) with IlaaS delivery model?
a. Amazon EC2
b. Google App Engine
c. Salesforce CRM
d. Zoho mail
Answer: a. Amazon EC2
Q5. Which of the following OpenStack components is used for block storage services?
a. Keystone
b. Cinder
c. Swift
d. Neutron
Answer: b. Cinder
Q6. In cloud, service downtime is 30 minutes and availability of the service is 0.80. What is the service uptime?
(a) 120 minutes
(b) 60 minutes
(c) 150 minutes
(d) 135 minutes
Answer: (c) 150 minutes
These are Nptel Cloud Computing week 3 Assignment 3 Answers
Q7. In Google File System (GFS), the master maintains regular communication with the chunk servers.
a. TRUE
b. FALSE
Answer: a. TRUE
Q8. In a system, 400 unit workloads have been added. What will be the penalty?
a. 40%
b. 100 %
c. 20%
d. 8000%
Answer: c. 20%
Q9. Which of the following option(s) is/are correct?
a. Service Level Agreement(SLA) contains Service Level Objectives(SLO)
b. Service Level Objectives(SLO) contains Service Level Agreement(SLA)
c. Multiple Service Level Agreements (SLAs) are aggregated to Key Performance Indiocator (KPI)
d. Key Performance Indiocators (KPIs) are aggregated to Service Level Objectives(SLO)
Answer: a, d
These are Nptel Cloud Computing week 3 Assignment 3 Answers
Q10. Statement 1: In OpenStack block storage, the stored objects persist until the VM is terminated.Statement 2: In OpenStack ephemeral storage, the stored objects are accessible from within VM as local file system.
a. Both statement 1 and 2 are correct
b. Statement 1 is correct and statement 2 is incorrect
c. Statement 2 is correct and statement 1 is incorrect
d. Both statement 1 and 2 are incorrect
Answer: c
These are Nptel Cloud Computing week 3 Assignment 3 Answers
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