network_programming.htm

Notes on Network Programming in C

Chap 02: Questions

What is a socket?

• A socket is a connection between two devices through the internet
• An abstraction that represents on endpoint of a comms link

What is a connectionless protocol? What is a connection-oriented protocol?

• Connectionless -> sends data independently
• Connection-oriented -> sends data in the context of a larger stream

Is UDP a connectionless or connection-oriented protocol?

• Connectionless

Is TCP a connectionless or connection-oriented protocol?

• Connection-oriented

What types of applications generally benefit from using the UDP protocol?

• Videogames, video calls (better real-time performance)

What types of applications generally benefit from using the TCP protocol?

• Banking applications, databases, emails

Does TCP guarantee that data will be transmitted successfully?

• Yes

What does the bind() function do?

• It attaches a socket to a given IP address. Its usage is required by the server

What does the accept() function do?

• Accepts the connection from the client. It will block until a new TCP has been connected, then returns the socket for this new connection

In a TCP connection, does the client or the server send application data first?”

• The client asks for data, the server sends it