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Can somebody help me with this question? UESTION 43 1. Select the correct statement(s) regarding OFDM...
Question 1 Select the correct statement(s) regarding fiber optic cable. a. The core and cladding within a fiber optic cable must have the same refractive index in order to achieve TIR (Total Internal Reflection) b. Only single mode fiber (SMF) can be constructed with either a “step” or “graded index” core c. Mulimode optical fibers (MMF) are vulnerable to modal dispersion d. All statements are correct Question 2 Using a direct sequence spread spectrum (DSSS) technique spreads a narrow band channel...
Study Questions, thanks! QUESTION 17 Select the correct statement(s) regarding 802.11 WLANs. a. Operates over unlicensed ISM frequencies b. Implements spread spectrum or OFDM techniques for better noise resistance and spectral efficiency c. Uses CSMA/CA since collisions are always possible d. All of the above are correct QUESTION 18 For 802.11 WLANs, the four frame exchange protocol is implemented to help avoid the hidden node problem. True False QUESTION 19 What are ways to increase data capacity on an 802.11...