We can achieve unlimited bandwidth, as the harmonics we use are unlimited.
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Go back N protocol
A. requires larger receiving window
B. suitable for network with low high rate
C. max sending window size is the max sequence number
D. receiving window size should be larger than max sequence number
Amongst the 6 elementary DLL protocols:
A. Simplex stop-and-wait protocol uses piggybacking;
B. For go-back-n protocol, receiving window = 1;
C. For go-back-n protocol, sending window = MAX_SEQ;
D. For selective repeat protocol, the sending window <= MAX_SEQ.
电磁波在导体中的趋肤深度有如下规律:电磁波频率越高,趋肤深度越 ______ ;电导率越大,趋肤深度______ ;磁导率越大,趋肤深度浅。(注:横线上填入“深”或“浅”)
平面波在非导电媒质中传播时,相速度仅与______ 有关,但在导电媒质中传播时,相速度还与______ 有关,这种现象称为色散