Chapter 22, Problem 14RE

Explanation of Solution

Executing HEAD command of the HTTP :

• The web application uses Hyper Text Transfer Protocol(HTTP) as application layer protocol.
• HTTP is an application protocol that is used for distributive, collaborative, and hypermedia information system.
• The HEAD command returns the header information of the given item.
• Telnet programs allows the user to connect with server.
• The following shows the result of executing HEAD command of the HTTP.

~$ telnet horstmann.com 80

Trying 67.220.118.65...

Connected to horstmann.com.

Escape character is '^]'.

HEAD / HTTP/1.1

Host: horstmann.com

Blank line

HTTP/1.1 200 OK

Date: Fri, 06 Jan 2012 14:54:13 GMT

Server: Apache/2...