Networking!!
Now this unit has nothing to do with “connecting with friends on Facebook” hahahah *clears throat*. Well, now that my lame jokes are out of the way, let's get busy! Networking is about LAN, MAN, and WAN. Scratching your head? Okay then, this should help:
- LAN: Local Area Network, this is a connection that works inside buildings for example schools. It is the smallest of the three networks. The computers that students use clients. They are the main computers and are connected to servers. You know, the cause of the best websites being blocked is because of those servers. They have control of clients.
- MAN: Metropolitan Area Network, this would connect a city or a large campus.
- WAN: Wide Area Network, is the largest of the three types of networks. A perfect example of a WAN would be the internet, it’s international, hence known as “Wide.”
- LAN: Local Area Network, this is a connection that works inside buildings for example schools. It is the smallest of the three networks. The computers that students use clients. They are the main computers and are connected to servers. You know, the cause of the best websites being blocked is because of those servers. They have control of clients.
- MAN: Metropolitan Area Network, this would connect a city or a large campus.
- WAN: Wide Area Network, is the largest of the three types of networks. A perfect example of a WAN would be the internet, it’s international, hence known as “Wide.”
OSI Models
OSI stands for Open Systems Interconnection. The model on the right is used to describe network applications. The layers, from 7 to 1 are:
7) Application Layer: This layer is responsible for managing
communication between application processes. [1]
6) Presentation Layer: This layer determines the format and visual presentation of displayed data. [2]
5) Session Layer: This layer establishes, synchronizes and maintain communication channels between nodes. [3]
4) Transport Layer: This layer ensures the reliable arrival of messages and provides error checking mechanisms and data flow controls. [4]
3) Network Layer: This layer is responsible for the delivery of [information] to the final destination. [5]
2) Data Link Layer: This layer manages frames, transmission, and error control over a single communication link. [6]
1) Physical Layer: Last but not least, the physical layer is responsible for the transmission of signals, such as electrical signals, optical signals, or radio signals, between computing machines. [7]
7) Application Layer: This layer is responsible for managing
communication between application processes. [1]
6) Presentation Layer: This layer determines the format and visual presentation of displayed data. [2]
5) Session Layer: This layer establishes, synchronizes and maintain communication channels between nodes. [3]
4) Transport Layer: This layer ensures the reliable arrival of messages and provides error checking mechanisms and data flow controls. [4]
3) Network Layer: This layer is responsible for the delivery of [information] to the final destination. [5]
2) Data Link Layer: This layer manages frames, transmission, and error control over a single communication link. [6]
1) Physical Layer: Last but not least, the physical layer is responsible for the transmission of signals, such as electrical signals, optical signals, or radio signals, between computing machines. [7]
Ethernet Cables
Our last important project was to make an Ethernet cable.Now you might think that's hard, but it isn’t. We follow a few steps to get the cable to function.
1) Strip about 2 inches of the wire.
2) Undo the four wires to make eight.
3) Wire them to the appropriate order.
4) Connect the wires properly into the correct Modular Connector Plugs and make sure each wire is inside a hole.
5) Lastly, crimp the wires using a Modular Connector Crimper.
6) Connect the wire into an Ethernet port and check if the internet works. If it does not, then most likely there was a mess up with the wire connections.
1) Strip about 2 inches of the wire.
2) Undo the four wires to make eight.
3) Wire them to the appropriate order.
4) Connect the wires properly into the correct Modular Connector Plugs and make sure each wire is inside a hole.
5) Lastly, crimp the wires using a Modular Connector Crimper.
6) Connect the wire into an Ethernet port and check if the internet works. If it does not, then most likely there was a mess up with the wire connections.
[1] http://www.belden.com/pdfs/Cable101/complete%20glossary.HTM
[2] http://www.carrollcommunications.com/voip_ip_telephony_dictionary3.html
[3] http://www.networksorcery.com/enp/glossary.htm
[4] http://searchnetworking.techtarget.com/definition/Transport-layer
[5] http://library.thinkquest.org/06aug/02257/glossery.html
[6] http://www.pcai.com/web/glossary/pcai_internet_glossary.html
[7] http://www.techfest.com/networking/cabling/cableglos.htm