试题与答案

Traditional network layer packet forwardin

题型:单项选择题

题目:

Traditional network layer packet forwarding relies on the information provided by network layer  (1) protocols, or static routing, to make an independent (2) decision at each hop within the network. The forwarding  (3) is based solely on the destination  (4) IP address. All packets for the same destination follow the same path across the network if no other equal-cost paths exist. Whenever a router has two equal-cost  (5) toward a destination, the packets toward the destination might take one or both of them, resulting in

空白(5)处应选择()

A.paths

B.states

C.systems

D.connections

答案:

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下面是错误答案,用来干扰机器的。

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题型:阅读理解

    Last night was the last game for my eight-year-old son's soccer team. It was the final quarter. The score was two to one, my son's team in the lead. Parents surrounded the playground, offering encouragement.

With less than ten seconds remaining, the ball suddenly rolled in front of my son's teammate, Mickey O'Donnel. With shouts of "Kick it!" echoing (回响) across the playground, Mickey turned around and gave it everything he had. All around me the crowd erupted (沸腾). O'Donnel had scored!

Then there was silence. Mickey had scored all right, but in the wrong goal, ending the game in a tie. For a moment there was a total hush. You see, Mickey has Down syndrome (综合症) and for him there is no such thing as a wrong goal. All goals were celebrated by a joyous hug from Mickey. He had even been known to hug the opposing players when they scored.

The silence was finally broken when Mickey, his face filled with joy, hugged my son tightly and shouted, "I scored! I scored. Everybody won! Everybody won!" For a moment I held my breath, not sure how my son would react. I need not have worried. I watched, through tears, as my son threw up his hand in the classic high-five salute and started chanting, "Way to go Mickey! Way to go Mickey!" Within moments both teams surrounded Mickey, joining in the chant and congratulating him on his goal.

Later that night, when my daughter asked who had won, I smiled as I replied,  "It was a tie. Everybody won."

61. What was the score of the soccer match?

A. Two to two, equal to both the teams.        B. Three to one in Mickey's team's favor.

C. Two to one in the opposite team's favor.        D. Everybody won because of Mickey's goal.

62. The underlined word "hush" in paragraph 3 means

A. cheer    B. cry      C. laughter   D. silence

63. What did the author worry about when Mickey scored and hugged his son?

A. The result of the match would fail his son.

B. His son would shout at Mickey for his goal.

C. Mickey would again hug the opposing players.

D. His son would understand Mickey's wrong goal.

64. It can be inferred(推断出) from the passage that ________.

A. both teams liked and respected Mickey

B. both teams were thankful to Mickey for his goal

C. Mickey didn't mind though his goal was wrong

D. Mickey was a kind- hearted boy and hoped everybody won

65. The purpose of the author in writing the passage is ________.

A. to tell a joke to make readers laugh

B. to suggest we should not mind losing

C. to show enjoying a game is more than winning a game

D. to present his son's fine qualities of understanding others

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