Page 35 - DCAP408_WEB_PROGRAMMING

Unit 1: Internet Fundamentals

Notes
Figure 1.9: Client/Server concept: A “Thin Client”

Client Client

Graphical
User Web
Interface Resources

Web Database
Client Server

TCP/ IP TCP/ IP
Protocol Protocol
Suit Suit
Internet

1.12 URL

A URL contains the following information:
 Protocol: Specifies the Internet protocol to access a resource. The abstract encompasses
FTP, Gopher, and HTTP Internet Protocols.
 Network Endpoint: Internet Addresses of Internet Information Server and Protocol Port
Number.

 Resource Location: Path information to locate a resource on Internet Information Server
URL syntax is {service}: ://{host} [: port]/[path /… /] [file name]
Required parameters are surrounded by { }. Optional parameters are surrounded by [ ]. Other
characters are mandatory separators.

Notes Service is a required field. Web server support FTP, Gopher and HTTP services.
Host is a required field. This field is the host name or IP address of the Internet Information
Server.

Self Assessment

Fill in the blanks:
17. A prompt database is an ………………. repository of prerecorded sound files used by the
speech output engines of Speech Engine Services.

18. A database server receives requests for data from a client through ………………. proprietary
network software.

LOVELY PROFESSIONAL UNIVERSITY 29