a 1 dBm b 10 dBm c 10 dB d 1 dB A5 Which of the following is the quantitative

A 1 dbm b 10 dbm c 10 db d 1 db a5 which of the

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(a) 1 dBm (b) 10 dBm (c) 10 dB (d) 1 dB (A5) Which of the following is the quantitative measure of the performance of an optical fiber communication link? (1) Modal dispersion (2) Transmitter sensitivity (3) BL product (4) Power penalty (a) (2) and (3) only (b) (3) and (4) only (c) (2), (3), and (4) only (d) All of the above (A6 ) Assuming you now have a new information unit called “quadit” which ca n have 4 states. How many “quadits” are require d to represent all English letters (i.e. a, b, …, z, A, B, …, Z)? (a) 3 (b) 7 (c) 9 (d) 13 (A7) Which system has the best performance under the same BL product? (a) BER < 0.1 × 10 10 when the received power is 36 dBm (b) BER < 1 × 10 10 when the received power is 36 dBm (c) BER < 1 × 10 11 when the received power is 32 dBm (d) BER < 1 × 10 9 when the received power is 32 dBm (A8) Wavelength-division multiplexing (WDM) is like: (a) Driving a Ferrari instead of a Tesla (b) Using a bus instead of a car (c) Having more cars instead of one car
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