题目
A.when all switches have the same BID as the root switch
B.when all switches have received the MAC address of each neighboring switch
C.when every enabled switch port has been assigned a unique identifier
D.when every operating switch port is in either the blocking or forwarding state
E.when all switches are in either client, server, or transparent mode
第1题
A.Receive level
B.Reception quality
C. C1 value
D.Interference index
第2题
A. after broken links are re-established
B. in an improperly implemented redundant topology
C. when upper-layer protocols require high reliability
D. during high traffic periods
E. when a dual ring topology is in use
第3题
A. Traffic is switched from the first node receiving the AIS indication.
B. Traffic is switched from the far side of the failure, allowing handshaking to occur.
C. UPSR traffic is switched from the terminating node, BLSR traffic is rerouted from the originating node in the ring.
D. UPSR traffic is switched from the terminating node, circuit by circuit. BLSR traffic is rerouted from the last reachable node in the ring.
第4题
A. During high traffic periods
B. In an improperly implemented redundant topology
C. After broken links are re-established
D. When upper-layer protocols require high reliability
E. When a dual ring topology is in use
F. None of the above
第5题
A month later, Mrs. Lester found out what had happened. Mr. Lester told a friend of his that he had taken wrong turning on purpose. This friend told his wife , and the wife immediately went around to tell Mrs. Lester. The two women began to plan a revenge. One day, when Mr. Lester was not in, they broke into his stud y, which he always locked. His hobby was collecting old coins. Mrs. Lester had already worked out how much his collection was worth $850! They were taking some coins out of the case when they heard a car pull up outside the house. Mrs. Lester quickly switched the light off, and they waited, holding their breath. The front door opened and Mr. Lester came in. They heard him take his coat off. He walked towards the study door and opened it. There was no chance for the women to get away without being seen. Mr. Lester switched the light on and was astounded to see his wife standing there with a handful of valuable coins. It took both husband and wife a long time to get over this.
106.Which of the following is correct_____
A.Mr. Lester likes to watch ballet.
B.Mrs. Lester likes to watch ballet.
C.Both of them like to watch ballet
D.Neither of them likes to watch ballet.
107.It was quite_____ when they drove to the theatre.
A.rainy
B.stormy
C.cloudy
D.foggy
108.The theater is_____ from Mr. and Mrs. Lester's.
A.an hour-driving
B.in the other side of the city
C.very near
D.half an hour of bicycle riding
109.The wife of Mr. Lester's friend is a _____.
A.social worker
B.house cleaner
C.baby sitter
D.gossip
110.How many persons are mentioned in this story_____
A.Three
B.Four
C.Five
D.Six
第10题
Then there was Tom who was always regarded as "average. " However, he set his goals high, and then found a way to achieve his goal. Today he owns a million-dollar company.
Researchers have found that school performance is little related to job competence. Qualities like "steady and dependable" and "practical and organized" are more important.
"You don't need talent to succeed" , insist some experts. "All you need is a big pot of glue (胶水). You put some on your chair, you sit down, and you stick to every project until you've done the best you can do. "Average achievers stay glued to their chairs and postpone pleasure so they can receive future benefits. Many fast-trackers, on the other hand, expect too much too soon. When rewards don't materialize instantly, they may become disappointed and unhappy.
A fast-tracker in this passage refers to a person who______.
A.feels happy with everything
B.make others disappointed and unhappy
C.is an excellent student
D.learns new things quickly
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