1) Fiber optics is primarily used for what purpose in data networking? a) short distance and average performance b) long distance and average performance c) short distance and high performance d) long distance and high performance 2) Which band in the electromagnetic spectrum is used as reference for fiber optics? a) ultraviolet rays b) visible light c) infrared waves d) radio waves 3) What set of devices are used to reverse the effect of attenuation in optical fiber cables? a) transmitters and receivers b) encoders and decoders c) repeaters and amplifiers d) conductors and insulators 4) What must be the condition to achieve a total internal reflection? a) angle of incidence is less than the critical angle b) angle of incidence is equal to the critical angle c) both angle of incidence and critical angle must be zero d) angle of incidence is greater than the critical angle 5) Optical fiber cables are built underground to ensure what advantage? a) electromagnetic isolation b) greater capacity c) lower attenuation d) smaller size and lighter weight

Fiber Optics

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