Download - Network Cabling and Wireless Network
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Network Cabling and
Wireless NetworkPrepared by:
Arjane A. CabansagManilyn AtienzaQuenny Burgos
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Objectives:
• Determine which type of cabling is best for any networking situation.
• Identify the primary types of network cabling.
After this lesson, you will be able to:
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What is Network Cabling?
• is the medium through which information usually moves from one networkdevice to another. There are several types of cable which are commonly used withLANs. In some cases, a network will utilize only one type of cable, other networkswill use a variety of cable types.
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•The type of cable chosen for a network isrelated to the network's topology, protocol, and size. Understanding thecharacteristics of different types of cable and how they relate to other aspectsof a network is necessary for the development of a successful network.
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Types of cables used in Networks
Unshielded Twisted Pair (UTP) Cable Shielded Twisted Pair (STP) Cable
Coaxial Cable
Fiber Optics Cable
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Unshielded Twisted Pair (UTP) Cable
Twisted pair cabling comes in two varieties: shielded and unshielded. Unshieldedtwisted pair (UTP) is the most popular and is generally the best option for schoolnetworks.
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Unshielded Twisted Pair (UTP) Cable
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Connectors
RJ11
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RJ45
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Advantages
• Fastest copper-based medium available. • Less expensive than STP cables, costing
less per meter than other types of LAN cabling.
• Have an external diameter of approximately .43 cm, making it a smaller cable than STP cable and easier to work with during installation, as it doesn't fill the wiring ducts as fast as other cables.
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Disadvantages• Susceptible to radio frequency
interference (RFI) and electromagnetic interference (EMI) such as is caused from the microwave.
• More prone to electronic noise and interference than other forms of cable
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Type Use
Category 1 Voice Only (Telephone Wire)
Category 2 Data to 4 Mbps (LocalTalk)
Category 3 Data to 10 Mbps (Ethernet)
Category 4Data to 20 Mbps (16 Mbps Token
Ring)
Category 5 Data to 100 Mbps (Fast Ethernet)
Categories of Unshielded Twisted Pair (UTP) Cable
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Shielded Twisted Pair (UTP) Cable
a type of copper telephone wiring in which each of the two copper wires that are twisted together are coated with an insulating coating that functions as a ground for the wires. The extra covering in shielded twisted pair wiring protects the transmission line from electromagnetic interference leaking into or out of the cable.
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Shielded Twisted Pair (UTP) Cable
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Advantages
• Less susceptible to electrical interference caused by nearby equipment or wires.
• Less likely to cause interference themselves.
• Faster speed in carrying data.
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Disadvantages
• Physically larger.
• More expensive than twisted pair wire
• More difficult to connect to a terminating block.
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Coaxial cable
• Coaxial cabling has a single copper conductor at its center. A plastic layerprovides insulation between the center conductor and a braided metal shield.
• The metal shield helps to block any outside interference from fluorescentlights, motors, and other computers.
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Two types of coaxial cable
1.Thick coaxial
2.Thin coaxial
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Thick coaxial cable
Specification Cable TypeMaximum
Length
10 Base5 Thick Coaxial 500 meters
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Thick coaxial cable
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Specification Cable TypeMaximum
Length
10 Base2 Thin Coaxial 185 meters
Thin coaxial cable
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Thin coaxial cable
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Coaxial Cable Connector
• The most common type of connector used with coaxial cables is the Bayone-Neill-Concelman (BNC) connector.
• Different types of adapters are availablefor BNC connectors, including a T-connector, barrel connector, and terminator.
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T-connector
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Barrel connector
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Terminator.
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Advantages of coaxial
• They are cheap to make
• Cheap to install
• Easy to modify
• Good bandwith
• Great channel capacity
• Noise immunity due to low rate
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Disadvantages of coaxial• More expensive than twisted pairs
• Not supported for some network standards (eg. token ring)
• Its also very bulky and also has high attenuation so would have the need to implement repeaters.
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Fiber Optic Cable
•Consists of a center glass core surrounded by several layersof protective materials.
•It transmits light rather than electronicsignals eliminating the problem of electrical interference.
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Fiber Optics Connectors
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Advantages• System Performance .• Greatly increased bandwidth and capacity.• Immunity to Electrical Noise• Freedom from short circuit and sparks.
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Disadvantages• Expensive to install and the equipment is expensive.
• Lack of standardization globally and some locally which makes companies hesitant to use it.
• Cannot carry power like telephone and other electrical signals can.
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Specification Cable Type Maximum Length
10BaseTUnshielded Twisted Pair 100 meters
10Base2 Thin Coaxial 185 meters
10Base5 Thick Coaxial 500meters
10BaseF Fiber Optic 200meters
100BaseTUnshielded Twisted Pair 100meters
100BaseTXUnshielded Twisted Pair 220meters
Ethernet Cable Sumary
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Wireless Network
• Utilize radio waves and/or microwaves to maintain communication channels between computers. Wireless networking is a more modern alternative to wired networking that relies on copper and/or fiber optic cabling between network devices.
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• Rapidly gaining in popularity for both home and business networking. Wireless technology continues to improve, and the cost of wireless products continues to decrease.
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• Popular wireless local area networking (WLAN) products conform to the 802.11 "Wi-Fi" standards. The gear a person needs to build wireless networks includes network adapters (NICs), access points (APs), and routers.
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Network adapters (NICs),
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Access Points (APs)
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Advantages• Easy to add stations as there are no cables required.• Signals can be sent through doors and walls so the
stations can be mobile so can move around. • There is less need for technical support in setting up
due to their simple nature.
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• There are no cables to trip over so there are less health and safety issues to consider share resources like printers. Have shared access to a centralized storage.
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Disadvantages• Signals can suffer from other
signals.• To access the networks, you
have to be within a certain range.
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• The wireless networks can be quite slow.
• It is easy for hackers to hack or catch the signal.