Front

What are the key features of Java networking?

Back

1. Introduction to Java networking features 2. Motivating example: ICQ Server and Client 3. Networking basics: IP addresses, ports, protocols, client-server interaction 4. Socket-level programming 5. Writing a server (ServerSocket) 6. Communicating with web servers.

Front

What is an IP address?

Back

Every host on the Internet has a unique IP address, e.g., 143.89.40.46.

Front

What is the purpose of the Domain Naming Service (DNS)?

Back

DNS maps hostnames to IP addresses.

Front

What is the java.net.InetAddress class used for?

Back

It converts between hostnames and internet addresses.

Front

What is a port in networking?

Back

A port identifies a service within a host, allowing multiple services to run on the same IP address.

Front

What are some standard port numbers and their associated services?

Back

Time of day: 13, FTP: 21, Telnet: 23, SMTP: 25, HTTP: 80.

Front

What are protocols in networking?

Back

Protocols are rules that facilitate communications between machines.

Front

Name some common networking protocols.

Back

HTTP, FTP, SMTP, TCP, UDP.

Front

What is the client-server interaction model?

Back

Communication between hosts is two-way, with the server waiting for client requests.

Front

How does a client initiate communication with a server?

Back

The client uses the hostname/IP address and port number to send a request and waits for a response.