When you compare the differences between half-duplex and full-duplex Ethernet,which of the following characteristics are exclusive to half-duplex？（）

A. Half-duplex Ethernet operates in a shared collision domain.

B. Half-duplex Ethernet operates in an exclusive broadcast domain.

C. Half-duplex Ethernet has efficient throughput.

D. Half-duplex Ethernet has lower effective throughput.

E. Half-duplex Ethernet operates in an exclusive collision domain.

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更多“When you compare the differenc…”相关的问题

第1题

When you compare the differences between half-duplex and full-duplex Ethernet, which of th

e following characteristics are exclusive to half-duplex？ (Select two answer choices)

A．Half-duplex Ethernet operates in a shared collision domain.

B．Half-duplex Ethernet operates in an exclusive broadcast domain.

C．Half-duplex Ethernet has efficient throughput.

D．Half-duplex Ethernet has lower effective throughput.

E．Half-duplex Ethernet operates in an exclusive collision domain.

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第2题

You probably have a long mental list of moments and facts you wish you could remember—but

actually you cannot. The good news,【B1】______, is that while such memories may be currently【B2】______, they are not entirely gone, and could theoretically be【B3】______, according to a new brain research. In the study, biologist Jeffrey Johnson【B4】______16 college participants through an FMRI machine (which【B5】______nervous activity via blood flow)to compare brain patterns【B6】______memory formation and recall. First, he showed the students various common words and had them【B7】______a few tasks: say the word backwards in your head,【B8】______its uses, and picture how an artist would【B9】______it. Then, 20 minutes later, after the students re-entered the FMRI machine, Johnson showed them the list of words and asked them to recall【B10】______they could from before. Finally, he compared brain activity from both【B11】______and what he found will surprise you. Using【B12】______is called "pattern analysis" , its possible to【B13】______a unique pattern of brain activity to every individual thing we do. This means that when a participant says the word "apple" backwards the【B14】______pattern of brain activity is different from when he pictures the fruit.【B15】______interestingly, there is close similarity between the pattern that emerges when we【B16】______an activity and when we later recall it. The stronger our memory, the【B17】______the pattern, but as Johnson found, even at a moment【B18】______we cannot remember anything, our nerve cells still fire in a way that【B19】______the activity of when we formed the memory. This【B20】______that sometime in the future we may be able to retrieve the memories we thought wed lost forever.

【B1】

A．although

B．rather

C．though

D．therefore

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第3题

Have you ever seen a moon that looks unbelievably big？ It hangs over the horizon like

a huge？ pale hot-air balloon. Many people think of the bright full moon of autumn or the harvest moon that way—like a huge？ pale hot-air balloon. But can you always trust your eyes？

The harvest moon is the full moon on a day nearest the first day of autumn. Full or nearly full, it rises early in the evening for several nights in a row. It brings farmers well-lit evenings to harvest their crops.

The harvest moon can look huge. But does it really fill more of the sky than an ordinary full moon？

Why does the moon look bigger when it is near the horizon？ Our brains compare the size of the moon with the size of the objects we see on the horizon. We know that the distant mountains？ homes？ or skyscrapers are really very large. And？ since the moon is much farther away than is the distant landscape？ we “see the moon as being larger than it would otherwise look.”

1.To what do we compare the size of the harvest moon？

A.Mountains

B.Buildings

C.Homes

D.All of these

2.The main purpose of the article is to() .

A.inform

B.persuade

C.praise

D.convince

3.The author knew most people find the moon() .

A.mysterious