Networking 1

Hello ka blogger.. this is our first meeting in IT-2 Network Management/principles with Prof. John Mark Dosejo.
i hope you enjoy while you reading...

Our first meeting is all about Networking-which means communicating through device.


ICONS:

• ATM Switch
• Router
• Switch
• Com Server
• ISDN Switch
• Bridge
• PC
• Laptop
• Phones
• File Server
• Hub
• Modem
• Phone Customer
• Network Cloud
• Building
• Home Office

Data Networks - sharing data through the use of floppy disks is not an efficient or cost-effective manner.

Businesses needed a solution that would successfully address the following three problem.

• How to avoid duplication of equipment and resources.
• How to communicate efficiently.
• How to set up and manage a network.

 Two Classification of Devices:

• End User Device - includes computer, printer, scanner, and other device that provide services directly to the user.
• Network User Device - network device include all the device that connect the end user divices together to allow them to communicate.

Network Interface Card

- a network interface card (NIC) is a printed  circuit board that provide network communication capabilities to and from a personal Computer. Also called LAN Adapter.

HUB

 - Connect's a group of husts

 - It depends the maximum

 - Up link multiple hub

 - Hub is never manageble

Switches - Add more intelligence to data trasfer management.

Network Topology

- defines the structure of the network

- One part of the topology defination is the physical topology. which is the actual layout of the wire or media.

BUS TOPOLOGY 

- Used a single backbone cable that is terminated at both ends.

- All the hosts connect directly to his backbone.

RING TOPOLOGY

- Connect one host to the next and the last host to the first.

- This creates a phisical ring of cable.

STAR TOPOLOGY 

- Connects all cable to a central point of concentration.

EXTENDED STAR TOPOLOGY 

- An link individuals star together by connecting the hubs and/or switches. this topology can extend the scope and coverage of the network.

MESH TOPOLOGY

- Is implemented to provide as much protection as possible from interruption of service.

- Each host has its own connects to all other hosts.

- Although the Internet has multiple paths to any one location, it does not adopt the full mesh topology.