It encourages industry standardization by defining what functions occur at each layer of the model.
It necessitates changes in functionality in one layer to other layers.
It enables equipment efficiency from different vendors to use the same electronic components.
It divides the network communication process into smaller and simpler components, thus aiding component development, design, and troubleshooting.
It supports the evolution of multiple competing standards, and thus enhances business equipment manufacturing opportunities.
第1题：
What do we know about the indian IT industry?
A． It will move its head office to shenzhen
B． It is seeking further decelopment in China
C． It has attracted an investment of US$15 billiom
D．It caught up with the US IT industry in2008.
第2题：
What are the design features of language?
Design features refer to the defining properties of human language that distinguish it from any animal system of communication.
1)arbitrariness
2)productivity
3)duality
4)displacement
5)cultural transmission
略
第3题：
58 What do we know about the Indian IT industry?
A. It will move its head office to Shenzhen
B. It is seeking further development in China
C. It has attracted an investment of US$15 billion
D. It caught up with the US IT industry in2008.
第4题：
What are three features of the IPV6 protocol?（）
第5题：
AutoQoS takes the interface type and bandwidth into consideration when implementing what three QoS features？（）
第6题：
We can infer from the last paragraph that______（ ）
[A]upturned noses will soon be considered beautiful
[B]defects in facial features may someday be popular
[C]p]astic surgery is a well．developed industry
[D]people should be confident of their appearance
第7题：
浙江省交通投资集团有限公司标志由 “CICO”四个字符构成，其全英文意思是（）
第8题：
What can be learnt about Swiss watch industry from the passage?
A. It targets rich people as its potential customers.
B. It’s hard for the industry to beat its competitors.
C. It wastes a huge amount of money in advertising.
D. It’s easy for the industry to reinvent cheap watches.
第9题：
What is the name of the Cisco industry-leading small business unified communications solution？ （）
第10题：
In the communications industry, what are the features and benefits of using the layered OSI model?（）