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Which one of the following statements best explains the spli

题目
单选题
Which one of the following statements best explains the split horizon rule used in distance vector routing protocols?（）
A

Only routers can split boundaries (horizons) between concentric networks.

B

Each AS must keep routing tables converged to prevent dead routes from being advertised across boundaries.

C

Networks can only remain fully converged if all information is sent out all active interfaces.

D

Information about a route should not be sent back in the direction from which the original update came.

E

Distance vector protocols need fall back routers that are responsible for momentary loops.

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第1题：

Split horizon has been enabled within the Ezonexam routed network. Which one of the following statements best explains the split horizon rule?

A．Only routers can split boundaries (horizons) between networks in separate AS numbers.

B．Each AS must keep routing tables converged to prevent dead routes from being advertised across boundaries.

C．Once a route is received on an interface, advertise that route as unreachable back out the same interface.

D．Information about a route should never be sent back in the direction from which the original update came.

E．None of the above


正确答案：D
解析：Explanation:
The split horizon rule states:
* Never advertise a route out of the interface through which you learned it.

For instance, in Figure 4a below, if Router One is connected to Routers Two and Three through a single multipoint interface (such as Frame. Relay), and Router One learned about Network A from Router Two, it will not advertise the route to Network A back out the same interface to Router Three. Router one assumes that Router Three would learn about Network A directly from Router Two.


Incorrect Answers:
A: There is no such requirement

B: Distance vector protocols updates routing table at regular intervals instead of Topology changes

C: This is the definition of the poison reverse rule, not the split horizon rule.

第2题：

Which of the following BEST explains the purpose of an HCL？（）

  • A、 It lets the administrator know which hardware will work with a particular OS.
  • B、 It sets the bare minimum hardware requirements for specified software.
  • C、 It allows the administrator to verify software compatibility amongst various vendors.
  • D、 It verifies that hardware is fit for certain overclocking performance metrics.

正确答案:A

第3题：

Which of the following statements is NOT mentioned in the passage?

A. The climate is associated with man's intelligence.

B. People's creative thinking is changing from season to season.

C. That temperature affects one's creative thinking has been scientifically proved.

D. Autumn is the second best season for thinking.


正确答案：B
48．答案为B。根据第一段最后一句，that climate and temperature have a definite effect on our mental abilities作出该项选择。

第4题：

Which of the following statements best describes a Pre-sales Solution Assurance Review？（）

  • A、An account team proposal review
  • B、An installation planning meeting
  • C、A solution design development methodology
  • D、A technical inspection of a completed solution design

正确答案:D

第5题：

Several @functions can execute multiple statements. Which one of the following initializes a variable and can increment in during the operation?（）

  • A、 @do 
  • B、 @for 
  • C、 @while 
  • D、 @dowhile 

正确答案:B

第6题：

Which one is the most important based on the following common elements of a network design？（）

  • A、Business needs
  • B、Risk analysis
  • C、Security policy
  • D、Best practices

正确答案:A

第7题：

which one of the following best where layer can be used?（）

  • A、form 
  • B、page 
  • C、subform 
  • D、all of the above

正确答案:B

第8题：

On the topic of VLSM, which one of the following statements best describes the concept of the route aggregation?

A．Deleting unusable addresses through the creation of many subnets.

B．Combining routes to multiple networks into one supernet.

C．Reclaiming unused space by means of changing the subnet size.

D．Calculating the available host addresses in the AS.

E．None of the above


正确答案：B
解析：Explanation:
In the networking world route aggregate means combining routes to multiple networks into one. This is also known as route summarization or supernetting. It is normally used to reduce the number of route entries in the routing table by advertising numerous routes into one larger route.

第9题：

Which of the following statements is false？（）

  • A、There can be more than one master catalog for a store
  • B、A sales catalog is a subset of the master catalog
  • C、The master catalog is the central place for the stores merchandise
  • D、There can be more than one sales catalog for a store
  • E、Multiple stores can share a master catalog

正确答案:A

第10题：

Which of the following statements explains why it is normally best to have more than one controller-basedaccess point participate in the containment of one rogue access point？（）

  • A、Multiple controller-based access points will load-balance the containment task using fewer resources than a single access point.
  • B、Clients connected to the rogue access point may be out of the range of the controller-based access point providing containment.
  • C、Each controller-based access point can handle only a limited amount of clients connected to the rogue access points.
  • D、Clients connected to the rogue access point must be able to connect to the containment controller-based access point.

正确答案:B

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