INTRODUCTION TO INTERNET OF THINGS: Assignment 7

1. Protocol used for connection less socket programming:

 a. TCP

 b. UDP

 c. Both

 d. None

Ans : b

2. Which one is an SDN controller:

 a. POX

 b. OpenDayLight

 c. ONOS

 d. All of the above

Ans: d

3. Give the output of the following snippet:
                        Name= “Split-this-string”
                        Name.split(“-”)

 a. [“Split”, “this”, “string”]

 b. Split, this, string

 c. [“Split-“, “this-“, “string”]

 d. Split this string

Ans: a

4. Which of the following is not a function in matplotlib library of Python:

 a. display()

 b. show()

 c. subplot()

 d. title()

Ans: a

5. Application program interface (API) used between application and control planes is known as:

 a. Northbound API

 b. Eastbound API

 c. Southbound API

 d. Westbound API

Ans: a

6. The bind() function in Python socket programming is used to:

 a. Specify the port for service on the specified host

 b. Read data from the socket

 c. Send data to the socket

 d. Initiate the connection

Ans: a

7. Opening a file in append mode in Python:

 a. Overrides the existing data in the file

 b. Adds the new data to the end of the existing file

 c. Adds the new data at the beginning of the existing file

 d. Cannot write data to a file in append mode

Ans: b

8. A typical socket program on raspberry pi using python:

 a. Creates a two-way communication between two nodes in a network

 b. Server performs the task/service requested by the client

 c. Both a and b

 d. None of these

Ans: c

9. In Python based socket programming, which of these is/are represent a socket family?

 a. AF_UNIX

 b. AF_INET

 c. Both a and b

 d. None of these

Ans: c

10. In Python based socket programming, which of these is/are represent a socket type?

 a. AF_UNIX

 b. AF_INET

 c. SOCK_STREAM

 d. SOCK_DATA

Ans: c

11. Arrange the following events sequentially (starting from the first step to the last) for sending data from client to server using sockets and saving it?
       A. Create a client and server
       B. Establish connection between the two
       C. Send data from the client to the server
       D. Save the data in a file

 a. A-B-C-D

 b. A-C-D-B

 c. C-B-D-A

 d. None of the sequences are true

Ans: a

12. The ion() function in matplotlib plotting:

 a. Adds lines to the plot

 b. makes subplots in the plot area

 c. provides title to the plot

 d. turns on interactive plot mode

Ans: d

13. The following are the limitations of our current traditional networks:

 a. Vendor-specific architecture of switches limits dynamic configuration according to application-specific requirements.

 b. Switch configuration required according to the installed operating system (OS).

 c. Centralized control.

 d. All of the above

Ans: d

14. The basic SDN concept involves:

 a. Separate control logic from hardware switches

 b. Define the control logic in a centralized manner

 c. Control the entire network including individual switches

 d. All of the above

Ans: d

15. Control message from a switch to controller in SDN is termed as:

 a. Flow-rule message

 b. PACKET-IN message

 c. Control message

 d. Data message

Ans: b