How should a web application authenticate user id / passwords combinations? a) should the password be sent in clear text to the server for authentication ?b) should the password be hashed ?c) if hashed, how would one authenticate the password at server?d) or any other mechanism? Any approach to migrate passwords from an existing web application to migrated web application? How would one analyze and find solutions to HIGH CPU usage by a web application? The CPU usage shoots close to 100% within 3 days of application server restart, and once the CPU reaches close to 100%, the web application hangs? What could be the probable causes? What would be line of approach to resolve this issue? What's the difference between servlets and applets? Do some research and post some examples with programming code. Be sure to include citations.