![]() The characteristics and quality of a data transmission are determined both by the characteristics of the medium and the characteristics of the signal. The atmosphere and outer space are examples of unguided media that provide a means of transmitting electromagnetic signals but do not guide them this form of transmission is usually referred to as wireless transmission. With guided media, the waves are guided along a solid medium, such as copper twisted pair, copper coaxial cable, and optical fiber. In both cases, communication is in the form of electromagnetic waves. Transmission media can be classified as guided or unguided. Transmission medium is the physical path between transmitter and receiver in a data transmission system. Transmission medium provides physical entity for the conveyance of signals. identify unguided medium, such as infrared, microwave. ![]() ![]() measure performance of transmission medium.identify guided medium such as coax, fiber or twisted pair cable.define transmission medium, electromagnetic spectrum.Different transmission techniques generally categorized as baseband or broadband transmission may be applied to each of these media types.Īfter completing this chapter, the student should be able to: For example, telephone twisted pair, coax cable, shielded copper cable and fiber optics are the main types used for LANs. Many different types of media can be used for the physical layer.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |