131. What is a WebSocket in the context of Node.js and web applications?
Answer:A communication protocol that provides full-duplex, bidirectional communication channels over a single TCP connection
132. How is a WebSocket different from a traditional HTTP request in Node.js?
Answer:WebSockets provide full-duplex communication, allowing both the client and server to send data at any time.
133. Which Node.js module is commonly used for implementing WebSocket functionality in web applications?
134. What is the purpose of the ws module in Node.js?
Answer:To provide a WebSocket server and client implementation
135. What is a WebSocket handshake in Node.js?
Answer:An initial HTTP request-response exchange to negotiate and establish a WebSocket connection
136. What is the WebSocket protocol identifier in a URL, often used for WebSocket connections in Node.js?
137. In Node.js Websockets, what is the purpose of the WebSocket object on the client-side?
Answer:To communicate with the WebSocket server
138. In Node.js WebSocket communication, how does the server send messages to connected clients?
Answer:By calling the WebSocket.send() method on the client's WebSocket object
139. What is the purpose of the WebSocket.on('message') event in Node.js WebSocket communication?
Answer:To handle incoming messages from the WebSocket clients
140. In Node.js, what is the typical way to broadcast a message to all connected WebSocket clients?
Answer:By looping through all connected clients and sending the message to each one
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