Question 26 What is the first address of a block of classless addresses if one of the addresses is 17.12.14.50/28? Not yet answered Marked out of 1.00 O a. 17.12.14.49/28 O b. 17.12.14.48/28 Flag question O c. 17.12.14.63/28 O d. 17.12.14.62/28 Question 27 The problem for long optical fibers Not yet answered Marked out of 1.00 Select one: O a. intrerferance P Flag question O b.reflection O c. dispersion O d. attenuation Question 28 Radio waves are Not yet answered Marked out of 1.00 Select one: O a. unidirectional O b. bidirectional P Flag question O c. omnidirectional O d. line of sight Question 29 What is the last address of a block of classless addresses if one of the addresses is 17.12.14.50/28? Not yet answered Marked out of 1.00 O a. 17.12.14.63/28 P Flag question O b. 17.12.14.62/28 O c. 17.12.14.48/28 O d. 17.12.14.49/28 Question 30 In __coding, we divide our message into blocks, each of k bits, called Not yet answered Marked out of 1.00 Select one: a. linear; datawords P Flag question O b. none of the above O c. block; datawords O d. block; blockwords