This document discusses different types of transmission media including twisted pair cables, coaxial cables, fiber optics, microwave transmission, and satellite. It provides details on each medium, such as their advantages and disadvantages as well as common applications. Guided media like twisted pair, coaxial cable, and fiber optic cable provide a physical conduit for transmitting signals while wireless media such as microwave and satellite transmit electromagnetic waves without a physical path. Twisted pair is the most commonly used but has low bandwidth, while fiber optic cable has very high bandwidth but is more expensive to install and maintain.
this power point is to make you learn more about the topic guided and unguided media in computer fundamentals and uses of these this will also help you to learn about different types of topology in computer and gain your knowledge of computer in many ways.
this power point is to make you learn more about the topic guided and unguided media in computer fundamentals and uses of these this will also help you to learn about different types of topology in computer and gain your knowledge of computer in many ways.
Hello everyone! Here I have uploaded this presentation on Communication Media which will help you easily understand this topic. If you find this helpful, don't forget to click like. Do share it with your friends!!!!!!!!!!Enjoy
this topic covered guided media including twisted pair cable, coaxial cable and fiber optic cable and their working process advantages and applications.
Transmission Media, Guided and unguided transmission mediaadnanqayum
Transmission Media and its types, Guided and unguided transmission media with examples (guided = (i) Twisted pair cable (ii) Coaxial cable (iii) Fiber optical cable, unguided = (i) Radio wave (ii) Microwave (iii) Infra-red wave)
Hello everyone! Here I have uploaded this presentation on Communication Media which will help you easily understand this topic. If you find this helpful, don't forget to click like. Do share it with your friends!!!!!!!!!!Enjoy
this topic covered guided media including twisted pair cable, coaxial cable and fiber optic cable and their working process advantages and applications.
Transmission Media, Guided and unguided transmission mediaadnanqayum
Transmission Media and its types, Guided and unguided transmission media with examples (guided = (i) Twisted pair cable (ii) Coaxial cable (iii) Fiber optical cable, unguided = (i) Radio wave (ii) Microwave (iii) Infra-red wave)
What is Network Cabling?
Cable is the medium through which information usually moves from one network device to another.
There are several types of cable which are commonly used with LANs. In some cases, a network will utilize only one type of cable, other networks will use a variety of cable types. The type of cable chosen for a network is related to the network's topology, protocol, and size.
Transmission media,Guided communication, Coaxial cables, Twisted pair cable,Optical fibers,Guided media, Computer Science, Class 12 cs, ppt pdf for class 12 cbse network and communications
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Objectives:
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Medium of Transmitting DATA by marwan inayat
1.
2. ITC PRESENTATION
MEDIUM OF TRANSMISSION DATA
TWISTED PAIR CABLS
COAXIAL CABLES
FIBER OPTICS
MICROWAVE
SATELLITE
3. TRANSMISSION MEDIA
Transmission media
are located below
the physical layer
Computers use
signals to represent
data.
Signals are
transmitted in form
of electromagnetic
energy.
6. FACTORS TO BE CONSIDERED WHILE
CHOOSING TRANSMISSION MEDIUM
Transmission Rate
Cost and Ease of Installation
Resistance to Environmental Conditions
Distances
7. GUIDED MEDIAGUIDED MEDIA
Guided media, which are those that provide a
conduit from one device to another, include
twisted-pair cable, coaxial cable, and fiber-optic
cable.
8. TWISTED PAIR CABLE
This cable is the most commonly used and is
cheaper than others. It is lightweight, cheap, can
be installed easily, and they support many
different types of network
Twisted Pair is of two types :
Unshielded Twisted Pair (UTP)
Shielded Twisted Pair (STP)
11. UNSHIELDED TWISTED PAIR (UTP)
Adv:
• Ordinary telephone wire
• Cheapest
• Easiest to install
• It has high speed capacity
• 100 meter limit
Dis adv:
• Bandwidth is low when compared
with Coaxial Cable
• Provides less protection from
interference.
12.
13. SHIELDED TWISTED PAIR (STP)
Adv:
• Metal braid or sheathing that
reduces interference
• Easy to install
• Eliminates crosstalk
• Higher capacity than
unshielded twisted pair
• Increases the signaling rate
Disadv:
• More expensive
• Harder to handle
(thick, heavy)
• Difficult to manufacture
14. GUIDED MEDIA - UTP
Applications:
Telephone lines connecting subscribers to the
central office
DSL lines
LAN – 10Base-T and 100Base-T
15. TWISTED PAIR - APPLICATIONS
Most common medium
Telephone network
Within buildings
For local area networks (LAN)
16. TWISTED PAIR - PROS AND CONS
Cheap
Easy to work with
Low data rate
Short range
20. COAXIAL CABLE
Inner conductor is a
solid wire outer
conductor serves both
as a shield
against noise and a
second conductor
21. TYPES OF COAXIAL CABLES
Baseband : Which is used for digital transmission. It is
mostly used for LAN’s. Baseband transmits a single
signal at a time with very high speed.
Broadband : This uses analog transmission on standard
cable television cabling. It transmits several
simultaneous signal using different frequencies.
22. COAXIAL CABLE ADVANTAGES
Bandwidth is high
Used in long distance telephone lines.
Television distribution
Can carry 10,000 voice calls simultaneously
Short distance computer systems links
Local area networks
Data transmission without distortion.
23. DISADVANTAGE
Single cable failure can fail the entire network.
Difficult to install and expensive when compared
with twisted pair.
24. GUIDED MEDIA – COAXIAL
CABLE
Applications:
Analog telephone networks
Cable TV networks
Traditional Ethernet LAN – 10Base2, 10Base5
25. FIBER OPTICS
• Higher bandwidth
• Less expensive
• Immune to electrical noise
• More secure – easy to notice an attempt to
intercept signal
• Physical characterizes
– Glass or plastic fibers
– Very thin (thinner than human hair)
– Material is light
26.
27. OPTICAL FIBER - PROS
• greater capacity
– data rates of hundreds of Gbps
• smaller size & weight
• lower attenuation(Reduction in signal)
• Used for both analog and digital signals.
28. CONS
It is expensive.
Difficult to install.
Maintenance is expensive and difficult
29. GUIDED MEDIA – OPTICAL FIBER
CABLE
Applications:
Backbone networks – SONET
Cable TV – backbone
LAN
100Base-FX network (Fast Ethernet)
100Base-X
Coaxial cable, like twisted pair, consists of two conductors, but is constructed differently to permit it to operate over a wider range of frequencies. It consists of a hollow outer cylindrical conductor that surrounds a single inner wire conductor (Stallings DCC8e Figure 4.2b). The inner conductor is held in place by either regularly spaced insulating rings or a solid dielectric material. The outer conductor is covered with a jacket or shield. A single coaxial cable has a diameter of from 1 to 2.5 cm. Coaxial cable can be used over longer distances and support more stations on a shared line than twisted pair.
Coaxial cable is a versatile transmission medium, used in a wide variety of applications, including:
•Television distribution - aerial to TV & CATV systems
•Long-distance telephone transmission - traditionally used for inter-exchange links, now being replaced by optical fiber/microwave/satellite
•Short-run computer system links
•Local area networks
The following characteristics distinguish optical fiber from twisted pair or coaxial cable:
•Greater capacity: The potential bandwidth, and hence data rate, of optical fiber is immense; data rates of hundreds of Gbps over tens of kilometers have been demonstrated. Compare this to the practical maximum of hundreds of Mbps over about 1 km for coaxial cable and just a few Mbps over 1 km or up to 100 Mbps to 10 Gbps over a few tens of meters for twisted pair.
•Smaller size and lighter weight: Optical fibers are considerably thinner than coaxial cable or bundled twisted-pair cable. For cramped conduits in buildings and underground along public rights-of-way, the advantage of small size is considerable. The corresponding reduction in weight reduces structural support requirements.
•Lower attenuation: Attenuation is significantly lower for optical fiber than for coaxial cable or twisted pair, and is constant over a wide range.
•Electromagnetic isolation: Optical fiber systems are not affected by external electromagnetic fields. Thus the system is not vulnerable to interference, impulse noise, or crosstalk. By the same token, fibers do not radiate energy, so there is little interference with other equipment and there is a high degree of security from eavesdropping. In addition, fiber is inherently difficult to tap.
•Greater repeater spacing: Fewer repeaters mean lower cost and fewer sources of error. The performance of optical fiber systems from this point of view has been steadily improving. Repeater spacing in the tens of kilometers for optical fiber is common, and repeater spacings of hundreds of kilometers have been demonstrated.