Sockets(Computer Science > Javascript ) Questions and answers for exam Preparation

Question 1. Which of the following is a stateless protocol?

HTML
XHTML
HTTP
All of the mentioned

Explanation:-

Answer: Option C. -> HTTP

Question 2. What does the value 2 of the WebSocket attribute Socket.readyState indicate?

Closed connection
Handshake connection
Unestablished connection
Established connection and communication is possible

Explanation:-

Answer: Option B. -> Handshake connection

Question 3. How many WebSocket events are available?

2
3
4
5

Explanation:-

Answer: Option C. -> 4

Question 4. Which method is used to close the WebSocket?

Socket.flush()
Socket.close()
Socket.Close()
Socket.dispose()

Explanation:-

Answer: Option B. -> Socket.close()

Question 5. How does the client and the server communicate following the rules defined by the WebSocket protocol?

Long-lived TCP Socket
Short-lived TCP Socket
UDP Socket
HTTP Socket

Explanation:-

Answer: Option A. -> Long-lived TCP Socket

Question 6. Which of the following are not a socket property?

onopen
readyState
onmessage
ready

Explanation:-

Answer: Option D. -> ready

Question 7. How can we check the subprotocol being used by the client?

subprotocol property
protocol property
clientprotocol property
none of the mentioned

Explanation:-

Answer: Option B. -> protocol property

Question 8. How will you transmit data using the connection?

send(data)
Socket.send(“data”)
Socket.send(data)
Socket(data)

Explanation:-

Answer: Option C. -> Socket.send(data)

Question 9. Which of the following is not a WebSocket event?

open
close
error
deny

Explanation:-

Answer: Option D. -> deny

Question 10. What does an History object contain?

URL
Parameters
Attribute values
Property

Explanation:-

Answer: Option A. -> URL