Network Hardware Computer is a device that can physically be seen and touched, whichform a unity, so that it can build a computer network.
To be able to build a computer network, there are several computer network hardware that must be known.
Here are some examples of computer network hardware:
o Cable
o Ethernet Card
o Hub & Switches
o Repeater
o Bridge
o Router
To be able to build a computer network, there are several computer network hardware that must be known.
Here are some examples of computer network hardware:
o Cable
o Ethernet Card
o Hub & Switches
o Repeater
o Bridge
o Router
1. CABLE
There are several types of cables are widely used and has become standard in its use for data communication in computer networks.
Each cable type has different capabilities and specifications.
There are three general types of cables are often used, namely:
a. coaxial
b. twisted pair
c. fiber Optic
A. Coaxial
Thick Coaxial
a. Mean diameter of 12 mm
b. Called a standard ethernet / ethernet thick / yellow cable
b. Called a standard ethernet / ethernet thick / yellow cable
Thin Coaxial
a. Average diameter of 5 mm color black.
b. Widely used among amateur radio, especially for the transciever that does not require alarge power
output.
c. Each device connected to the BNC (Bayonet-Neill-aConcelmn) T Connector.
Called Thin Ethernet / Thin Net.
c. Each device connected to the BNC (Bayonet-Neill-aConcelmn) T Connector.
Called Thin Ethernet / Thin Net.
B. Twisted Pair Cable
} UTP (Unshielded Twisted Pair)
} STP (Shielded Twisted Pair)
} Consists of 4 pairs of twisted wires
} From 8 pieces of the existing cable, only 4 pieces are used to send and receive data.
} Other devices with respect to the use of this type of cable is a RJ-45 connector and hub/
} STP (Shielded Twisted Pair)
} Consists of 4 pairs of twisted wires
} From 8 pieces of the existing cable, only 4 pieces are used to send and receive data.
} Other devices with respect to the use of this type of cable is a RJ-45 connector and hub/
switch.
There are two types of UTP cabling commonly used, plus one special type of installation for cisco routers, namely:
• Straight Through Cable
• Cross Over Cable
• Roll Over Cable
Used to connect multiple computers through intermediaries HUB / Switch, which serves as konsetrator or repeater.
1. White orange
2. Orangre
3. white green
4. Blue5. White blue
6. Green
7. White green
8. Brown
- Roll Over Cable
Used to connect a terminal and modem to a cisco router 2500 series Access Servers
C. Fiber Optic Cable
- Fiber optic cable is a cable made of glass fiber with advanced technology and has a data transfer speed is faster than regular cable
- The cable has a core of glass fibers as a conduit to channel the signal between terminals. Often used as a channel BACKBONE for high reliability compared to coaxial cable or UTP cable.
- These cables are not affected by weather and heat.
2. Ethernet Card
How it works based on the broadcast network Ethernet card, where each node in a network receives every transmission of data sent by a node to another. Each Ethernet addresses have 48 bits long known as the Ethernet address (MAC Address). Address has been put into each set of network cards (NICs) that are recognized as the Media Access Control (MAC) or better known as a hardware address. 24 bits or 3 bytes of the beginning of the code specified by the IEEE. Ethernet Card Network Interface Cards (NICs) or Network Card A device that provides media to connect between the computer
3. Hub & Switches
• Hub & Switches usually called the concentrator.
• A concentrator is a device that unifies network cables from each workstation, server or other device.
• In a star topology, UTP cable comes from a workstation into the hub or switch.
• Using the RJ-45 connector
• Some types of hubs can be fitted multilevel (stackable) up to 4 flats, and usually has
5. Bridge
Bridge is used to link between networks that have the same protocol.
Use of Hub / Switch should be in accordance with the speed of the NIC. Because the difference in speed on the NIC & Hub / Switch means the devices can not communicate to the fullest.
use of straight through UTP cable in the local network will usually form a star 0r tree topology with hub / switch as its center
- Cross Over Cable
In contrast to the Straight throughs, use a cross cable is used to communicate between computers (without HUB), or can also be used to cascade HUB if needed.
- Roll Over Cable
Used to connect a terminal and modem to a cisco router 2500 series Access Servers
- The cable has a core of glass fibers as a conduit to channel the signal between terminals. Often used as a channel BACKBONE for high reliability compared to coaxial cable or UTP cable.
- These cables are not affected by weather and heat.
2. Ethernet Card
How it works based on the broadcast network Ethernet card, where each node in a network receives every transmission of data sent by a node to another. Each Ethernet addresses have 48 bits long known as the Ethernet address (MAC Address). Address has been put into each set of network cards (NICs) that are recognized as the Media Access Control (MAC) or better known as a hardware address. 24 bits or 3 bytes of the beginning of the code specified by the IEEE. Ethernet Card Network Interface Cards (NICs) or Network Card A device that provides media to connect between the computer
• Hub & Switches usually called the concentrator.
• A concentrator is a device that unifies network cables from each workstation, server or other device.
• In a star topology, UTP cable comes from a workstation into the hub or switch.
• Using the RJ-45 connector
• Some types of hubs can be fitted multilevel (stackable) up to 4 flats, and usually has
a hole of 4, 8, 16 and 24 pcs.
• Switch is a concentrator that has a data traffic management capabilities are better
• Switch is a concentrator that has a data traffic management capabilities are better
than the Hub.
• Switch Type manageable, but can manage the data traffic can also be given an IP
• Switch Type manageable, but can manage the data traffic can also be given an IP
address.
4. Repeater
Main function is to amplify the signal by receiving a signal from a segment of the LAN cable and then re-emit the same power with the original signal on the cable segment to another. In this way the distance the cable can be diperjauh.
4. Repeater
Main function is to amplify the signal by receiving a signal from a segment of the LAN cable and then re-emit the same power with the original signal on the cable segment to another. In this way the distance the cable can be diperjauh.
5. Bridge
Bridge is used to link between networks that have the same protocol.
Its function is similar to a repeater, but is more flexible and more intelligent than
repeaters.
Bridge can connect networks using different transmission methods.
Bridge is able to separate in part because of the traffic frame filtering to implement
Bridge is able to separate in part because of the traffic frame filtering to implement
the mechanism.
This mechanism is generally as store and forward.
This mechanism is generally as store and forward.
Bridge can be used to connect networks that use different cable types or different
topologies.
Bridge can find out the address of each computer on each side of the network.
6. Router
The router is capable of transmitting data / information from one network to another are different.
The router is almost the same as bridge, but not as smart and flexible bridge.
The router is almost the same as bridge, but not as smart and flexible bridge.
The router will find the best path to send a message based on the destination
address and source address.
The router knows the address of each computer on a local network environment,
The router knows the address of each computer on a local network environment,
bridges and other
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