Page 19 - DCAP202_Fundamentals of Web Programming

Fundamentals of Web Programming

Notes 7. Application — End user services such as email.
6. Presentation — Data problems and data compression
5. Session — Authenication and authorization
4. Transport — Guarantee end-to-end delivery of packets
3. Network — Packet routing
2. Data Link — Transmit and receive packets
1. Physical — The cable or physical connection itself.
TCP/IP Protocol Stack.
5. Application — Authenication, compression, and end user services.
4. Transport — Handles the flow of data between systems and
provides access to the network for applications via
the (BSD socket library)
3. Network — Packet routing
2. Link — Kernel OS/device driver interface to the network
interface on the computer.

Task Make a report on the layers of TCP/IP Protocol Architecture.

Self Assessment

Fill in the blanks:
14. TCP handles ........................... between systems and IP handles the routing of packets.
15. The ........................... protocol with seven layers is the usual reference model.

1.8 Summary

 The Internet carries a vast array of information resources and services.
 A Web address, or domain name, is an address where you can be found online.
 A hostname is a label that is assigned to a device connected to a computer network and
that is used to identify the device.
 The DNS translates Internet domain and host names to IP addresses.
 The order Preferred networks determines the order that Windows XP will automatically
attempt when seeking to make a wireless/Internet connection.
 An IP address is an identifier for a computer or device on a TCP/IP network. Networks
using the TCP/IP protocol route messages based on the IP address of the destination.
 IP addresses are 32 bit integers which are represented in the familiar dot based notation.
 Network device has two types of addresses, one called the logical address — in most cases
this is the IP address — and the other one being the physical address — also known as the
MAC address.

12 LOVELY PROFESSIONAL UNIVERSITY