1. Module 1

2. Upon completing Module 1 students should be able to: Understand the physical connections needed for a computer to connect to the Internet Recognize the components of a computer Install and troubleshoot NICs and modems Configure the set of protocols needed for Internet connection Use basic procedures to test an Internet connection Demonstrate a basic ability to use Web browsers and plug-ins Introduction to Networking

3. To connect to the internet you will need 3 basic components: Physical Connection Logical Connection Application Connecting to the Internet

4. Physical Connection This is the part of the connection that consists of items you can physically touch such as the Network Interface Card (NIC), a modem or the Network Media

5. Network Interface Card When Purchasing an NIC for a PC you must consider: The protocols in use The System bus used by the PC The type of media used on the network

6. Network Interface Cards Situations that require NIC installation include the following: Installation of a NIC on a PC that does not already have one Replacement of a malfunctioning or damaged NIC Upgrade from a 10-Mbps NIC to a 10/100/1000-Mbps NIC Change to a different type of NIC, such as wireless Installation of a secondary, or backup, NIC for network security reasons

7. High Speed and Dial Up High Speed connections such as Digital Subscriber Line (DSL) and Cable modem are known as “always on” services. Integrated Services Digital Network (ISDN) is a Dial Up service offered by telephone companies and generally operates at 56kbps

8. Logical Connection This part of the connection uses a set of rules (protocols) called the Transmission Control Protocol/ Internet Protocol (TCP/IP) suite. This set of rules is the primary set of protocols used on the internet. The TCP/IP suite enables you to transmit and receive data.

9. TCP/IP Protocols The TCP/IP protocols were developed by the Department of Defense (DoD) in the 1970’s to support worldwide internetworks. The TCP/IP protocols allow cooperating computers to share resources across a network

10. Application Once physically and logically connected to the internet an Application is needed to interpret and display the information.

11. Web Browsers Two popular Web Browsers are: Netscape Navigator Internet Explorer

12. Plug-ins A plug-in is a piece hardware or software that adds a specific feature to a system such as Internet Explorer. Examples of plug-ins are Flash which is used to display animation or Quicktime which is used to display movies.

13. Binary Mathematics It is very important to understand the concept of Binary Mathematics as this is the language which computers communicate in. Computers can only understand two states, on which is represented by 1 and off which is represented by 0.

14. Bits and Bytes A bit is one unit of binary data either a one or a 0. A byte is 8 bits of binary data and is a single addressable storage unit.

15. Numbering Systems The 3 main numbering systems used in networking are: Binary:Base 20-1 DecimalBase 100-9 HexadecimalBase 160-9 + A-F

16. Boolean Logic The Boolean And rule states that 1 + 1 = 1 any other combination = 0 For example: 11001010 01101000 01001000

17. Any Questions?