INTRODUCTION TO INTERNET OF THINGS: Assignment 9

1. We normally take snapshot in Openstack, _______.

 a. after the installation of an instance

 b. before the installation of an instance

 c. it is an inbuilt image in Openstack

 d. it should be downloaded from the internet

Ans: a

   2. Sensor-Cloud deals with

 a. Sensor-for-Service

 b. Sensor-as-a-Service

 c. Sensor-in-Cloud

 d. None of these

Ans: b

   3. In OpenStack, NOVA is

 a. image service

 b. object service

 c. compute service

 d. used for providing the networking service

Ans: c

   4. In OpenStack, the duration of service usage is monitored by

 a. Cinder

 b. Ceilometer

 c. Heat

 d. Neutron

Ans: b

   5. The concept of Sensor-Cloud is

 a. based on simple storing the sensor data into cloud

 b. based on the accumulating the sensor data from one application region and transmit these data to another region only

 c. based on virtualization of sensor

 d. None of the above options is correct

Ans: c

   6. Among the following actors in sensor-cloud architecture, who is responsible for managing the infrastructure and deals with price?

 a. End-users

 b. Sensor owners

 c. SCSP

 d. None of the above

Ans: c

   7. In sensor-cloud, who takes decision whether the data should be provided directly to the end user or not?

 a. Internal Cache

 b. External Cache

 c. End-user

 d. Sensor-owner

Ans: a

   8. What is a good approach to reduce latency?

 a. Analyzing data close to the data source

 b. Analyzing data in cloud

 c. Increasing number of nodes

 d. Decreasing number of nodes

Ans: a

   9. Which of the following company coined the term “Fog Computing” ?

 a. Apple

 b. Amazon

 c. CISCO

 d. Microsoft

Ans: c

   10. Resource usage information in service accounting is obtained in the form of

 a. Data set

 b. Tables

 c. Records

 d. Any form

Ans: c

   11. For which of the following reasons the fog computing should be used?

 a. For storing a huge amount of data in the fog device

 b. While handling time sensitive data, a millisecond can make a huge differences

 c. In the absence of network connectivity with users’ device, the fog device can provide the data

 d. The data rate in a fog device is always very high.

Ans: b

   12. Which of the following is/are the advantages of Fog computing?

 a. Reduce the latency during decision making

 b. Data can be stored in local server

 c. Fog nodes can be programmed according to the customer’s requirements

 d. All the above

Ans: d

   13. To uninstall the OpenStack, which of the following files is required to be run?

 a. Unistack.sh

 b. unstack.sh

 c. remstack.sh

 d. uninstallstack.sh

Ans: b

   14. Why data volume is a problem in IoT-based cloud computing?

 a. because data are encrypted and hard to analyze

 b. because data coming from IoT devices are always in raw format and difficult to store

 c. because the density of IoT devices is increasing each day and in turn the volume of generated data is growing very fast

 d. because IoT device density is decreasing each day and in turn the volume of generated data are decreasing very fast

Ans: c

   15. Blue Pill attack on hypervisor is a threat example of:

 a. Host security at PaaS level

 b. Host security at SaaS level

 c. Host security at IaaS level

 d. None of the above

Ans: c