SYBSC IT COMPUTER NETWORKS UNIT II Transmission Media
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Transmission media is used to carry information from sender to receiver through electrical or electromagnetic signals. There are different types of transmission media including twisted-pair cables, coaxial cables, and fiber-optic cables. Twisted-pair cables use twisted pairs of conductors to reduce interference, and can be unshielded or shielded. Fiber-optic cables transmit data as pulses of light through glass fibers and have advantages over metal cables including higher bandwidth and immunity to electromagnetic interference. Wireless transmission media also transmits data through radio waves or microwaves across space.
SYBSC IT COMPUTER NETWORKS UNIT II Transmission Media
- 1. TRANSMISSION MEDIA UNIT II- CHAPTER 2
- 2. Transmission media Transmission media is a pathway that carries the information from sender to receiver. We use different types of cables or waves to transmit data. Data is transmitted normally through electrical or electromagnetic signals. An electrical signal is in the form of current.
- 7. Effect of Noise on Parallel Lines Vs Twisted- Pair Lines
- 8. Unshielded Twisted-Pair (UTP) Cable Unshielded twisted pair (UTP) cables are widely used in the computer and telecommunications industry as Ethernet cables and telephone wires. In an UTP cable, conductors which form a single circuit are twisted around each other in order to cancel out electromagnetic interference (EMI) from external sources. Unshielded means no additional shielding like meshes or aluminium foil, which add bulk, are used.
- 10. Shielded Twisted-Pair Cable The extra covering in shielded twisted pair wiring protects the transmission line from electromagnetic interference leaking into or out of the cable. STP cabling often is used in Ethernet networks, especially fast data rate Ethernets. Contrast with UTP.
- 11. Shielded and unshielded twisted-pair cable revisited. Recently, the advantages and disadvantages of shielded and unshielded twisted-pair cable have been under debate. Advocates of STP cable, which includes screened twisted-pair and foil twisted-pair cables, claim that it is superior to UTP VS STP
- 12. Coaxial Cable
- 14. Refraction
- 15. Critical Angle
- 20. Single Mode
- 22. Radio Communication Band Figure 7-21 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
- 23. Figure 7-22 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 Propagation Types
- 24. VLF LF Figure 7-23, 24 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
- 25. MF HF Figure 7-25, 26 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
- 26. VHF UHF Figure 7-27, 28 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
- 27. SHF EHF Figure 7-29, 30 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
- 28. Terrestrial Microwave Figure 7-31 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
- 29. Parabolic Dish Antenna Figure 7-32 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
- 30. Horn Antenna Figure 7-33 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
- 31. Satellite Communication Figure 7-34 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
- 32. Geosynchronous Orbit Figure 7-35 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998
- 33. Figure 7-36 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998 Cellular System
- 34. Cellular Bands Figure 7-37 WCB/McGraw-Hill The McGraw-Hill Companies, Inc., 1998