‘Materi kuliah’, in this first time I’m wrote on this wall of your screen is about internetworking basics. What is internetworking? Internetwork is interconnection of two or more different networks like connecting two or more LANs or WANs . In ‘materi kuliah’ internetworking basic is focusing on how to connect networks together using Cisco routers and switches.
In networking, you really need a good grasp of Open Systems Interconnection (OSI) model for the solid foundation you will build your networking knowledge upon. The OSI model has seven hierarchical layers that were developed to enabled different networks to communicate reliably between disparate systems. From the book “cisco ccna certified network associate” says,.. “Networks and networking have grown exponentially over the last 15 years, understandably so. They have had to evolve at light speed just to keep up with huge increase in basic mission critical user needs such as sharing data and printers as well as more advanced demands such as videoconferencing. Unless everyone who needs to share network resource is located in the same office area (an increasingly uncommon situation)”. WeLL,.. now ‘materi kuliah’ will give you a basic network with the picture bellow:
basic networks allow devices to share information.
the term computer languanges refers to binary code(0 or 1).
the two hosts above communicate using hardware(HUB) and MAC addres
--a switch can replace the hub, breaking up collision domains--
Networks segmentation is breaking up a really big networks into a number of smaller ones with using devices like routers, switches, and bridge.
Note : networks that’s been segment with a switch so each network segment connected to the switch is now separate collision domain. But the fact of the network of Is still one broadcast domain.
- hub: a piece of equipment that acts as a multiport repeater
- switches: a network device that filters, forwards, and floods frames based on the destination address of each frame. The switch operates at the data link layer of the Open System Interconnection (OSI) model.
- network: multiple computers connected together using a communications system.
- bridge: a layer 2 device that connects multiple network segments at the data link layer of the OSI model
- collision domain: a network segment where if one particular device sends a frame on a network segment will process that frame. This also means that if two or more devices on that same segment transmit a frame same time there will be collision
- broadcast domain: a logical network composed of all the computers and networking devices that can be reached by sending a frame to the data link layer broadcast address.
- MAC Address: standardized data link layer address that is required for every port or device that connects to a LAN. Other devices in the networks use these addresses to locate specific ports in the network and to create and update routing tables and data structures. MAC address are 6 bytes long and are controlled by the IEE
- LAN: Local Area Networks refers to a local network, or a group of interconnected local networks that are under the same administrative control. In the early days of networking, LANs were defined as small networks that existed in a single physical location.
- WAN: Wide Area Network. A network that spans broader geographical area than a Local Area Netwok, over public communications networks.
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