在OSI参考模型中,下列不属于端到端层的是()
应用层
传输层
网络层
表示层
破题点:本题可从“端到端”入手。注意:“不属于”。
故本题选C。
Passage One The ups and downs of life may seem tohave no predictable plan. But scientists now know there are very definite lifepatterns that almost all people share. Today, when we live 20 years longer thanour great-grand