单选题Why does RSTP have a better convergence time than 802.1D？（）A it is newerB it has smaller timersC it has less overheadD it is not timer-based
题目
it is newer
it has smaller timers
it has less overhead
it is not timer-based
相似考题
更多“Why does RSTP have a better convergence time than 802.1D？（）”相关问题
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第1题：
Which two differentiators make RSTP the preferred protocol for preventing Layer 2 loops in aswitched network environment?() (Choose two.)A. Features such as UplinkFast and BackboneFast are compatible with RSTP.
B. An RSTP that is based on Cisco products generally performs better than the Cisco proprietary 802.1D enhancements.
C. Cisco proprietary enhancements are not transparent.
D. Information about port roles is sent to all switches.
E. RSTPs that are based on Cisco products require no additional configuration.
参考答案：B, E
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第2题：
Which three statements about RSTP are true?()A. RSTP significantly reduces topology reconverging time after a link failure.
B. RSTP expends the STP port roles by adding the alternate and backup roles.
C. RSTP port atates are blocking,discarding,learing,or forwarding.
D. RSTP also uses the STP proprsal-agreement sequence.
E. RSTP use the same timer-baseed process as STP on point-to-point links.
F. RSTP provides a faster transition to the forwarding state on point-to-point links than STP does.
参考答案：A, B, F
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第3题：
Refer to the exhibit. Why has this switch not been elected the root bridge for VLAN1?()
A.It has more than one interface that is connected to the root network segment.
B.It is running RSTP while the elected root bridge is running 802.1d spanning tree.
C.It has a higher MAC address than the elected root bridge.
D.It has a higher bridge ID than the elected root bridge.
参考答案：D
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第4题：
----I have tried very hard to find a solution to the problem, but in vain -
---why not consult with Frank? You see, _________.
A. great minds think alike
B. two heads are better than one
C. a bird in the hand is worth two in the bush
D. it’s better to think twice before doing something
正确答案：B
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第5题：
Routing convergence time is which of the following？（）
- A、Time required for a VPN connection to occur
- B、Time required by protocols to update their forwarding tables after changes have occurred
- C、Time required for an IDS to detect suspicious software
- D、Time required by switch ports to update their link status and transition to the forwarding state
正确答案:B -
第6题：
Which three statements about RSTP aretrue?（）
- A、RSTP significantly reduces topology reconverging time after a link failure.
- B、RSTP expends the STP port roles by adding the alternate and backup roles.
- C、RSTP portatates are blocking,discarding,learing,orforwarding.
- D、RSTP also uses the STP proprsal-agreement sequence.
- E、RSTP use the same timer-baseed process as STP on point-to-point links.
- F、RSTP provides a faster transition to the forwarding state on point-to-point links than STP does.
正确答案:A,B,F -
第7题：
Which command enhances the 802.1D convergence time on ports that are connected to hosts?（）
- A、spanning-tree backbonefast
- B、spanning-tree uplinkfast
- C、spanning-tree portfast
- D、spanning-tree cost512
正确答案:C -
第8题：
单选题You are about to design a very fast convergence time on a service provider network. Which feature wouldyou utilize to declare a link failure within less than two seconds of the fault on a link？（）Afast convergence SFP
BMTU discovery
Credundancy links
Dkeepalive
Ecarrier delay
正确答案： D解析： 暂无解析 -
第9题：
单选题Why does RSTP have a better convergence time than 802.1D？（）Ait is newer
Bit has smaller timers
Cit has less overhead
Dit is not timer-based
正确答案： C解析： 暂无解析 -
第10题：
多选题avoid Layer 2 loops. Which two of the following are most probably the reasons for that preference?（）AInformation about port roles is sent to all switches.
BRSTPs that are based on Cisco products require no additional configuration.
CFeatures such as UplinkFast and BackboneFast are compatible with RSTP.
DAn RSTP that is based on Cisco products generally performs better than the Cisco proprietary 802.1D enhancements.
正确答案： C,A解析： 暂无解析 -
第11题：
多选题Which two statements are true about 802.1s？（）A802.1s supports a reduced number of spanning-tree instances.
B802.1s has better convergence times than 802.1w.
C802.1s does not support load balancing over the same physical topology.
DThe CPU utilization for 802.1s is lower than the CPU utilization for 802.1w.
正确答案： A,C解析： 暂无解析 -
第12题：
单选题Why is a woman better at learning foreign languages than a man?AThe area of the left side of a woman’s brain for language learning develops better than that of a man’s.
BThe right side of a woman’s brain for language develops better than that of a man’s.
CThe area of the left side of a woman’s brain for feelings develops better than that of a man’s.
DThe area of the right side of a woman’s brain fit for seeing in the dark develops better than that of a man’s.
正确答案： D解析：
由题干中关键词learning foreign languages对原文进行定位。根据文章可知人类左半脑发展数学、言语、阅读等，“In men and women, different areas in each side of the brain develop differently. (男女左右半脑不同区域发展情况不同。)，而后对此进行举例“In boys, for example, it is the area for mathematics；and in girls it is the area for language learning that develops better”（男孩数学区域发展较好，女孩语言区域发展较好)。这里需要注意例子中比较级的使用。由此可知，女孩子左半脑掌管语言的区域要比男孩子的发展的好。所以A项是正确答案。
【录音原文】
Do you believe that men and women think differently? Many people say no. They say men and women are born with exactly the same abilities to think and learn. They think social life affects their ways of thinking.
In the past ten years, many scientists have studied the differences between men and women and they all got the same conclusion：men and women are different because their brains are different and this makes men and women see the world in different ways. Boys, for example, are generally better than girls at mathematical ideas involving objects and their relationships. Boys also are generally faster in response than girls of hand and eye movements in ball games. Girls, on the other hand, generally start speaking earlier and can see better in the dark and are better at learning foreign language than boys.
What makes men and women better at one thing or another? The answer is the brain. The brain has two sides. The nerves on the left side are for mathematics, speech, reading, etc, while those on the right side are for artistic creation and other senses. In men and women, different areas in each side of the brain develop differently. In boys, for example, it is the area for mathematics；and in girls it is the area for language learning that develops better. Another interesting difference is that the two sides of a man’s brain are interconnected by a smaller number of nerves than in the case of a woman, so the flow of information between them is more limited Scientists think this affects some of our abilities. -
第13题：
Which command enhances the 802.1D convergence time on ports that are connected to hosts?()A. spanning-tree backbonefast
B. spanning-tree uplinkfast
C. spanning-tree portfast
D. spanning-tree cost512
参考答案：C
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第14题：
Which two of these statements regarding RSTP are correct?()A. RSTP cannot operate with PVST+.
B. RSTP defines new port roles.
C. RSTP defines no new port states.
D. RSTP is a proprietary implementation of IEEE 802.1D STP.
E. RSTP is compatible with the original IEEE 802.1D STP.
参考答案：B, E
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第15题：
题干：Most episodes of absent-mindedness--forgetting where you left something or wondering why you just entered a room--are caused by a simple lack of attention, says Schacter. "You&39;re sup-posed to remember something, but you haven&39;t encoded it deeply." Encoding, Schacter explains, is a special way of paying attention to an event that has a major impact on recalling it later. Failure to encode properly can create annoying situations. If you put your mobile phone in a pocket, for example, and don&39;t pay attention to what you did because you&39;re involved in a conversation, you&39;ll probably forget that the phone is in the jacket now hanging in your wardrobe (衣柜). "Your memory itself isn&39;t failing you," says Schacter. "Rather, you didn&39;t give your memory system the information.it needed." Lack of interest can also lead to absent-mindedness. "A man who can recite sports statistics from 30 years ago," says Zehnski, "may not remember to drop a letter in the mailbox." Women have slightly better memories than men, possibly because they pay more attention to their environ-ment, and memory relies on just that. Visual cues can help prevent absent-mindedness, says Schacter. "But be sure the cue is clear and available," he cautions. If you want to remember to take a medication (药物) with lunch, put the pill bottle on the kitchen table--don&39;t leave it in the medicine chest and write yourself a note that you keep in a pocket. Another common episode of absent-mindedness: walking into a room and wondering why you&39;re there, Most likely, you were thinking about something else. "Everyone does this from time to time,"says Zelinski. The best thing to do is to return to where you were before entering the room, and you&39;ll likely remember.
问题：Why does the author think that encoding properly is very important?
A.It helps us understand our memory system better.
B. It enables us to recall something form our memory.
C. It expands our memory capacity considerably.
D.It slows down the process of losing our memory.
One possible reason why women have better memories than men is thatA.they have a wider range of interests
B.they are more reliant on the environment
C.they have an unusual power of focusing their attention
D.they are more interested in what's happening around them
??One possible reason why women have better memories than men is that
??A.they have a wider range of interests
B.they are more reliant on the environment
C.they have an unusual power of focusing their attention
D.they are more interested in what's happening around them
请帮忙给出每个问题的正确答案和分析，谢谢！
问题 1 答案解析：B
细节题。根据第二段第一句可知encoding可以使我们回忆起发生过的事件。其原理是对发生事件加以特殊关注，在四个选项中只有B选项与原文意思一致。
问题 2 答案解析：D。
细节题。根据第三段第三句可知女性比男性记忆力好可能是因为她们对周围的环境更加注意，而记忆恰恰有赖于此。结合原文可以先排除A和B;C强调注意力的集中，D强调对周围发生的事情感兴趣，根据本段第一句可知缺少兴趣会导致心不在焉，全段内容都是围绕它来展开的，由此可知D选项概括最准确。
问题 3 答案解析：D
??细节题。根据第三段第三句可知女性比男性记忆力好可能是因为她们对周围的环境更加注意，而记忆恰恰有赖于此。结合原文可以先排除A和B;C强调注意力的集中，D强调对周围发生的事情感兴趣，根据本段第一句可知缺少兴趣会导致心不在焉，全段内容都是围绕它来展开的，由此可知D选项概括最准确。?? -
第16题：
哪两个有关RSTP的语句是正确的？（）
- A、RSTP无法与PVST+操作
- B、RSTP定义新端口角色
- C、RSTP没有定义新的端口状态
- D、RSTP是一个专有的执行IEEE 802.1D生成树协议
- E、RSTP与原来的IEEE 802.1D STP兼容
正确答案:B,E -
第17题：
You are about to design a very fast convergence time on a service provider network. Which feature wouldyou utilize to declare a link failure within less than two seconds of the fault on a link？（）
- A、fast convergence SFP
- B、MTU discovery
- C、redundancy links
- D、keepalive
- E、carrier delay
正确答案:E -
第18题：
Which two of these statements regarding RSTP are correct? （）
- A、RSTP cannot operate with PVST+.
- B、RSTP defines new port roles.
- C、RSTP defines no new port states.
- D、RSTP is a proprietary implementation of IEEE 802.1D STP.
- E、RSTP is compatible with the original IEEE 802.1D STP.
正确答案:B,E -
第19题：
Why does RSTP have a better convergence time than 802.1D？（）
- A、it is newer
- B、it has smaller timers
- C、it has less overhead
- D、it is not timer-based
正确答案:D -
第20题：
单选题One possible reason why women have better memories than men is that _____.Athey have a wider range of interests
Bthey are more reliant on the environment
Cthey have an unusual power of focusing their attention
Dthey are more interested in what’s happening around them
正确答案： A解析：
细节题。第三段末说，妇女比男人的记忆力要好一些，原因是妇女对环境给予更多的注意，这与D项“她们对事情发生的环境更感兴趣”属同义转述。 -
第21题：
单选题The author’s statement regarding how artists use the languages of art implies that _____.Aartists are better equipped than art historians to provide detailed evaluations of other artist’s work
Bmany artists have an unusually quick, intuitive understanding of language
Cartists can produce works of art even if they cannot analyze their methods of doing so
Dartists of the past, such as Giotto, were better educated about artistic issues than were artists of the author’s time
正确答案： B解析：
文章最后一句：艺术的语言是既明显又神秘，艺术家可以并不需要知道它的语法和语义就运用，就像我们使用语言一样。但其他人很少知道。由此可知，艺术家是比那些艺术历史学家更懂得如何去欣赏其他艺术作品。 -
第22题：
单选题Why does the woman think it is good that the test will be early?AThey will have time to study for it.
BAfternoons are bad times for tests.
CAfter it, they can study for other exams.
正确答案： B解析：
女孩提到早考完测验也很好，因为After we have finished with it, we can concentrate on our other finals.故C项正确。 -
第23题：
多选题Which two differentiators make RSTP the preferred protocol for preventing Layer 2 loops in aswitched network environment?（） (Choose two.)AFeatures such as UplinkFast and BackboneFast are compatible with RSTP.
BAn RSTP that is based on Cisco products generally performs better than the Cisco proprietary 802.1D enhancements.
CCisco proprietary enhancements are not transparent.
DInformation about port roles is sent to all switches.
ERSTPs that are based on Cisco products require no additional configuration.
正确答案： D,C解析： 暂无解析 -
第24题：
单选题Why does Seattle have a better survival rate of cardiac arrest than other cities?APeople in Seattle are probably better off than people in many other states.
BSeattle participates in a government-funded medical research network.
CAll medical centers in Seattle are the most high-powered.
DSeattle tracks outcomes of cardiac-arrest cases to judge their performance.
正确答案： D解析：
推理判断题。由题干信息定位至第四、五、六段。这三段分别介绍了西雅图高存活率的原因：tracks outcomes of cardiac-arrest cases，an exceptionally well-organized EMS system，well informed about what to do in the case of such an emergency，故正确答案是D。