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问题 选择题

小青的生日是建军节的前一天，她的生日是（　　）

A．8月1日

B．8月31日

C．7月30日

D．7月31日

答案

建军节是8月1日，这一天的前一天是7月的最后一天，即7月31日．

故选：D．

填空题

在下列各句的空白处填入一个最恰当的单词，使句子意思完整，语法正确。

1.  Don't tell lies.  Please tell the________.

2.  I have already had a toothbrush, and also I need a tube of________.

3.  These colorful books are________at little kids.

4.  Please make a________of three sports you like, and three sports you don't like.

5.  "Whiter than white"is a________for a kind of soap.
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单项选择题

Traditional IP packet forwarding analyzes the （1）IP address contained in the network layer header of each packet as the packet travels from its source to its final destination. A router analyzes the destination IP address independently at each hop in the network. Dynamic （2） protocols or static configuration builds the database needed to analyze the destination IP address (the routing table). The process of implementing traditional IP routing also is called hop-by-hop destination-based（3） routing. Although successful, and obviously widely deployed, certain restrictions, which have been realized for some time, exist for this method of packet forwarding that diminish its （4）. New techniques are therefore required to address and expand the functionality of an IP-based network infrastructure. This first chapter concentrate on identifying these restrictions and presents a new architecture, known as multipleprotocol （5）switching, that provides solutions to some of these restrictions.

（2）是（）

A. routing

B. forwarding

C. transmission

D. management
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