.. . cable can support highest bandwidth and greater transmission distance than any other guided media. a. UTP b. STP c. Coaxial d. Fiber-optic ... propagation, very high frequeney are transmitted in...

Extracted text: .. . cable can support highest bandwidth and greater transmission distance than any other guided media. a. UTP b. STP c. Coaxial d. Fiber-optic ... propagation, very high frequeney are transmitted in straight line directly from antenna to antenna. a. line-of-sight 7- In b. sky c. Ground d. none of them 8- A beam of light moves from one medium to another medium with less density, if the incident angle is less than the critical angle, the ray b. refract c. attenuate a. reflect d. not affected 9. The . . mode is used in cases where there is a need for communication in both directions at the same time. a. Simplex b. Half-duplex e. Full-duplex d. Point to point 10. In . . fber optie, the density of the core decreases gradually from the center to the edges. a. Multimode step-index c. Multimode graded-index b. Single mode d. None of them