Reference no: EM131161405
1. The amount of bending of the light into a material depends on the_______________of that material:
(a) critical angle
(b) wavelength
(c) refractive index
(d) reflective index
2. The wavelength of red light is:
(a) 680 nm
(b) 1600 nm
(c) 430 nm
(d) 520 nm.
3. The material surrounding the core of the optical wave-guide is called:
(a) strapping
(b) cladding
(c) glasing
(d) padding.
4. Loss caused by very small mechanical deflections and stress on the fiber:
(a) macro bending
(b) absorption
(c) micro bending
(d) dispersion
5. The attenuation of an optical signal is due to:
(a) scattering
(b) absorption
(c) macro bending
(d) all of the above.
6. The broadening of an optical pulse due to different path lengths taken through the fiber by different modes is called:
(a) chromatic dispersion
(b) modal dispersion
(c) polarization mode dispersion
(d) all of the above.
7. The broadening of an optical pulse due to different propagation velocities of the spectral components of the light pulse is called:
(a) modal dispersion
(b) polarization mode dispersion
(c) chromatic dispersion
(d) all of the above.
8. A coherent light source is one that is:
(a) spectrally pure
(b) easy to understand
(c) easy to decode
(d) due to a defective laser.
9. Which of the following is considered a wide area network?:
(a) open systems interconnection
(b) two or more LANs connected over a wide geographical area
(c) metropolitan area network
(d) none of the above.
10. Which of the following devices direct traffic and provides protocol conversion?:
(a) transistor
(b) switch
(c) transformer
(d) router.
11. Which command verifies the operation of the network?:
(a) Start
(b) Rayleigh
(c) Ping
(d) Pong.
12. Which layer accept messages?:
(a) Output
(b) Input
(c) Application
(d) Presentation.
13. Topology means______
(a) Architecture
(b) Protocol
(c) Top Quality
(d) Top Logic.
14. Type of topology is__________
(a) Bus
(b) Star
(c) A and B
(d) Tree.
15. DSL stands for_______
(a) Digita Subscriber Line
(b) Digital Signal Logic
(c) Data subscriber line
(d) Digital Signal line.