Application Layer ll

Question 1

How does HTTP work?

Answer 1

• HTTP client first initiates a TCP connection with the server
• Once connection is established, the browser/server access TCP
• Client sends and receives HTTP messages
• Server receives and sends messages

Question 2

Non-persistent HTTP

Answer 2

At most one object is sent over a TCP. Requires multiple connections to download multiple objects.

Question 3

Persistent HTPP

Answer 3

Multiple objects can be sent over single TCP connection

Question 4

Simple Mail Transfer Protocol (SMTP)

Answer 4

Protocol between mail servers to email messages