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1. Optical fibers have around 26,000 times more transmission capacity than twisted-pair cable and Coaxial cables have around 80 times more transmission capacity than twisted pair cables.


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2. IEEE 802.3 is a set of standards put forth by the Institute of Electrical and Electronics Engineers (IEEE) that define Ethernet-based networks as well as the name of the working group assigned to develop these standards.


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3. The IEEE 802.8 defines the LAN standard for fiber optic media used in token passing computer networks like FDDI.


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4. IEEE 802 standard is a family of IEEE standards dealing with local area networks and metropolitan area networks. IEEE 802.1 deals with higher layer LAN protocols.


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5. Bus topology is a network type in which every computer and network device is connected to single cable. It is ideal for small networks.


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6. One of the advantages of TREE network topology is that the error detection is easily done. Also, it is easy to manage and expand.


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7. Mesh topology is a point-to-point connection to other nodes or devices. All the network nodes are directly connected to each other.


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8. In Ring topology, each computer is connected to another computer, with the last one connected to the first. Exactly two neighbours are there for each device. The advantage of using a Ring network topology is that the network is not affected by high traffic.


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9. In Star topology, all the computers are connected to a single hub through a cable. This hub is the central node and all others nodes are connected to the central node.


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10. There are three categories of coax cables namely, RG-59 (Cable TV), RG-58 (Thin Ethernet), and RG-11 (Thick Ethernet). RG stands for Radio Government.


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11. Fiber Optic works on the properties of light. When light ray hits at critical angle it tends to refracts at 90 degree. This property is the basis of fiber optics.


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12. IEEE 802.3ab, which is also known as 1000BASE-T, is a standard for Gigabit Ethernet over copper wiring.


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13. A network structure whose design contains more than one topology is said to be hybrid topology. Hybrid topology has all the merits and demerits of all the incorporating topologies.


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14. Traditional Ethernet uses 10BASE-T specifications. The number '10' depicts 10Mbps speed, BASE stands for baseband, and T stands for Thick Ethernet.


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15. NIC stands for Network Interface card. A network interface card (NIC) is a hardware component which is installed on a computer so that it can connect to a network.


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16. Fibers are used instead of metal wires because signals travel along them with less loss. Also, fibers are immune to electromagnetic interference, a problem from which metal wires suffer excessively. In addition, Fibers are also used for illumination and imaging.


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17. Twisted-pair cabling was invented by Alexander Graham Bell in 1881. It is a type of wiring in which two conductors of a single circuit are twisted together for the purposes of improving electromagnetic compatibility.


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18. Twisted paired cables are cost-effective and easy to install. But different pairs within the cable have different delays, due to different twist rates that are used to minimize crosstalk between the pairs.


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19. CAT5e can support upto 1 Gbps speeds. It was made as an improvement over CAT5 cables which can support data transmission upto 100Mbps.


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20. .CAT2 or Category 2 cable supports speeds upto 4Mbps. It is used mostly for token ring networks. It is an improvement over Category 1 cable which supports speed upto 1 Mbps.


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