A、2 ^ 18
B、2 ^ 18-2
C、2 ^ 14-2
D、2 ^ 16
喵查答案：2 ^ 18-2
Given that the class B address of IP does not use 16 bits but 20 bits as the network number part of the class B address. How many networks of class B are available for assignment?
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Generally speaking, the higher the sound quality is required, the higher the quantization level and the lower the sampling frequency is. -
The higher the sampling frequency, the closer the discrete digitized sound wave is to its original waveform. -
Audio files in WAV format do not use compression algorithm, so they have good sound restorability, strong stereoscopic impression and relatively large file capacity. -
MPEG video compression standards include MPEG-1, MPEG-2, MPEG-4, MPEG-7 and MPEG-21.
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