Question 26 3 pts The next 4 questions (including this one) are based on the following description: Consider a point- to-point channel. Assume the bandwidth of the channel is 5 MHz and the signal-to-noise ratio of this channel is 24 dB. What is the capacity of this channel? 40 Mbps 5 Mbps 10 Mbps 20 Mbps Question 27 3 pts How many signal levels are required to achieve the above maximum transmission rate? O 32 levels O 4 levels O 16 levels O 8 levels Question 28 3 pts If we fix the bandwidth of the channel to 5 MHz and we want to increase the channel capacity to 100 Mbps, then what should be the signal-to-noise ratio of the channel? about 40 dB about 80 dB O about 60 dB about 20 dB