In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet. To a router,

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问题 In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.
   To a router, a flow is a(71)of packets that share the same characterstics, such as traveling the same(72), using the same(73), having the same kind of security, and so on. A router that supports the handling of flow labels has a(74)table. The table has an entry for each Active flow label; each entry defines the(75)required by the corresponding flow label.

选项 A、source
B、resources
C、route
D、Entry

答案B

解析 根据上下文意思,使用同样的资源,选择B
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