Cloud Computing | Week 3

Cloud Computing week 3 Assignment 3 Answers

Course Link: https://onlinecourses.nptel.ac.in/noc23_cs89/preview

1) In the context of aggregated demand in resource provisioning in the cloud, how does adding n independent demands affect the coefficient of variation (Cv)?
A) Increases the Cv
B) Decreases the Cv
C) Does not change the Cv
D) Inversely proportional to the mean

2) What does the term “biasness towards vendors” imply in the context of SLA monitoring?
A) Vendor-driven selection of monitoring parameters
B) Customer-driven selection of monitoring parameters
C) Balanced approach in monitoring parameters
D) Lack of active monitoring on the customer’s side

3) In the Openstack storage concept, _______ storage persists until the VM is terminated and is managed by _________.
A) Nova, Cinder
B) Ephemeral, Cinder
C) Cinder, Ephemeral
D) Ephemeral, Nova

4) What condition makes periodic provisioning acceptable in the presence of linear demand?
A) High resource utilization
B) Non-linear demand
C) Instantaneous demand
D) Flat demand

5) What is (are) the key factor(s) to consider in a hybrid model for utility pricing?
A) Reliability and accessibility
B) Network cost and usage costs
C) Peak to average demand ratio
D) Interoperability overhead

6) What architecture is used in a parallel database for the efficient execution of SQL queries?
A) Shared memory architecture
B) Shared disk architecture
C) Shared nothing architecture
D) Shared cache architecture

7) What type of environment benefits from utility pricing?
A) Environments with fixed demand levels
B) Environments with limited resource scalability
C) Environments with variable demand levels
D) Environments with prepaid resource allocation

8) What is the role of Neutron in the provisioning flow in OpenStack?
A) Fetches information about the whole cluster from the database
B) Publishes a message to the compute queue to trigger VM provisioning
C) Configures IP, gateway, DNS name, and L2 connectivity.
D) Contacts Cinder to get volume data

9) How does the master node in the Google File System maintain communication with chunk servers?
A) Command messages
B) Update messages
C) Query messages
D) Heartbeat messages

10) What does the ‘availability’ metric represent in the monitoring and auditing of SLAs?
A) The speed at which a service responds
B) The percentage of uptime for a service
C) How often the service is available
D) The ability for a resource to grow infinitely