Answer:
Explanation:
Because the electricity from wind farms is sold at a fixed price over a long ... and wind is now the largest source of renewable power in the United States. ... by the heating of the atmosphere by the sun, the rotation of the Earth, and the ... Wind power must still compete with conventional generation sources on a cost basis.
Answer:
The Answer B Modem
Explanation:
That is the only way that you want connect to the internet no other part can connect.
Unless you use a ethernet.
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Answer:
The correct option is C: For objects to communicate effectively with one another, each must know how the other object is implemented.
Explanation:
For effective communication of objects with each other, there is no need for each object to know how the other object is implemented. The rules for communication are already defined, and hence you do not have to know, as details of implementation are hidden. Hence the only false statement from the options is C.
Answer:
A 1 MB digital file needs 0.23 seconds to transfer over a channel with bandwidth 10 MHz and SNR 10 dB.
Explanation:
We can calculate the channel capacity using Shannon's Capacity formula:
C = B + log₂ (1 + SNR)
Where C = Channel Capacity
B = Bandwidth of the Channel
SNR = Signal to Noise Ratio
We are given SNR in dB so we need to convert it into a ratio.
= 10log₁₀ (SNR)
10 = 10log₁₀ (SNR)
1 = log₁₀ (SNR)
SNR = 10¹
SNR = 10
So, using Shannon Channel Capacity formula:
C = 10 x 10⁶ log₂ (1 + 10)
C = 34.5 MHz
Total amount of time required to transmit a 1MB file:
1MB = 1 x 8 Mbytes = 8Mb
C = 34.5 MHz = 34.5 Mb/s
Time required = 8Mb/34.5Mb/s = 0.23 seconds
A 1 MB digital file needs 0.23 seconds to transfer over a channel with bandwidth 10 MHz and SNR 10 dB.
Answer:
Option A is correct
Explanation:
The computing power of a web server and the storage capacity mostly depend on the software that run the server and the volume of e-commerce transactions.
