Why does the data communication industry use the layered OSI reference model? (Choose two.)（）A、It divides the network communication process into smaller and simpler components， thus aiding component development， design， and troubleshooting.B、It enables eq

题目

Why does the data communication industry use the layered OSI reference model? (Choose two.)（）

A、It divides the network communication process into smaller and simpler components， thus aiding component development， design， and troubleshooting.
B、It enables equipment from different vendors to use the same electronic components， thus saving research and development funds.
C、It supports the evolution of multiple competing standards， and thus provides business opportunities for equipment manufacturers.
D、It encourages industry standardization by defining what functions occur at each layer of the model.
E、It provides a means by which changes in functionality in one layer require changes in other layers.

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相似问题和答案

第1题：

—Why does the stream smell terrible? —Because large quantities of water_____.

A、have polluted

B、is being polluted

C、has been polluted

D、have been polluted

参考答案：D

第2题：

Why does the woman plan to go to town?

A．To pay her bills in the bank.

B．To buy books in a bookstore.

C．To get some money from the bank,

正确答案：C

第3题：

The fact () most people believe the earth is flat does not mean that it is true.

A、that

B、the

C、what

D、why

参考答案：A

第4题：

23． Why does Philip like action movies?

A． Because they are scary．

B． Because they are interesting．

C． Because they are exciting．

D． Because they are boring，

正确答案：C
23．C【解析】第六句可说明这一点。

第5题：

Why does the author write the text?

A. To stress the importance of oxen in farming.

B. To introduce the Chinese folk culture.

C. To describe how to celebrate the Year of Ox.

D. To explain how to develop agriculture with oxen.

正确答案：B

第6题：

Why does the author think it necessary to bring order to the Internet_________?

A． Because its database is disorganized.

B． Because the information required is specific.

C． Because its information is diverse and widespread.

D． All of the above.

正确答案：C
逻辑分析题。根据第一段“Because of the diverse and widespread information when one needs it，there is a need to bring some sort of organization to the Internet community．”可知只有选项C(because its information is diverse and widespread)符合题意，因此C为正确答案。

第7题：

Why does the World Health Organization give help to national governments to wipe out malaria?

A. The author does not give any reason in the whole passage.

B. Local governments are not skillful enough to kill mosquitoes.

C. Current sprays are not powerful enough to kill mosquitoes.

D. No new poisons have been developed to kill mosquitoes so far.

正确答案：A
[解析] 文中并未涉及原因，故选A。

第8题：

Why does the woman invite the man to tea？

A.She needs some friends to talk with.

B.She will give the man some useful information.

C.She needs some help from the man.

正确答案：B

第9题：

Why does the woman plan to go to town？

A To pay her bills in the bank. B To buy books in a bookstore. C To get some money from te bank.

正确答案：

暂无答案

第10题：

7． —Why _________ your brother like baseball?

—Because he thinks it is interesting．

A．is

B．are

C．do

D．does

正确答案：D
7．D 【解析】有行为动词like．主语是your broth- er，所以用助词does．

Why does the d

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