Which of the following usually causes a tree to grow unhealthy?A. Giving a tree a special shape and a definite height.B. Removing small side branches and making a tree look less thick.C. Allowing too many branches to grow in the middle.D. Having a tree su

题目

Which of the following usually causes a tree to grow unhealthy?

A. Giving a tree a special shape and a definite height.

B. Removing small side branches and making a tree look less thick.

C. Allowing too many branches to grow in the middle.

D. Having a tree surrounded by many other trees.

相似考题

1.Which of the following is not an AVL tree?A．B．C．D．

2.In which of the following topologies could the failure of one machine cause the entire network tostop functioning?()A. MeshB. Token ringC. StarD. Spanning tree

3.Which of the following features should an administrator configure to allow an IDS to watch thetraffic on a switch?()A. ARP spoofingB. VLANC. MirroringD. Spanning tree

4.In the following statements about graph operations，which one is NOT correct?A．Finding critical path is an operation on directed graphB．Finding critical path is an operation on undirected graphC．Spanning tree of a graph may not be uniqueD．Minimum spanning tree of a graph may not be unique

更多“Which of the following usually causes a tree to grow unhealthy? A. Giving a tree a sp ”相关问题

  • 第1题：

    Which of the following are spanning tree port states?()

    A. Learning

    B. Spanning

    C. Listening

    D. Forwarding

    E. Initializing

    F. Filtering

    G. Permitting


    参考答案：A, C, D

  • 第2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

  • 第3题：

    Passage Three

    Trees should only be pruned (修剪) when there is a good reason for doing so. Many gardeners believe that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way.

    First, pruning may be done to make sure that trees have a desired shape. The object may be to get a tree of the right height, and to help the growth of small side branches which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut out diseased or dead wood, or branches that are rubbing against each other and thus causing wounds. A tree may grow healthier by removing the branches that are locking up the centre and so preventing the free movement of air.

    One result of pruning is that an open wound is left on the tree and this provides an easy entry (进入) for diseases, but it is a wound that will heal. Often there is a race between the healing and the disease as to whether the tree will live or die. Pruning is usually clone in winter, for then you can see the shape of the tree clearly without the interference from the leaves.

    41. According to the article, which of the following statement is NOT true?

    A. Pruning is necessary when there are unwanted branches.

    B. Damage is done to a tree if it is left to grow in its own way.

    C. Diseased or dead branches should be cut away if they are found to rub against each other.

    D. Growing side branches often prevent air from moving freely.


    正确答案：B

    41．答案为B  根据第一段最后一句可知该陈述是错误的，修剪只是在有必要的时候才进行。

  • 第4题：

    Trees should only be pruned when there is a good and clear reason for doing so and,
    fortunately, the number of such reasons is small. Pruning involves the cutting away of overgrown and unwanted branches, and the inexperienced gardener can be encouraged by the thought that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way.
    First, pruning may be done to make sure that trees have a desired shape or size. The object may be to get a tree of the right height, and at the same time to help the growth of small side branches which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut diseased or dead wood, or branches that are rubbing against each other and thus cause wounds. The health of a tree may be encouraged by removing branches that are blocking up the centre and so preventing the free movement of air.
    One result of pruning is that an open wound is left on the tree and this provides an easy entry for disease, but it is a wound that will heal. Often there is a race between the healing and the disease as to whether the tree will live or die, so that there is a period when the tree is at risk. It should be the aim of every gardener to reduce which has been pruned smooth and clean, for healing will be slowed down by roughness. You should allow the cut surface to dry for a few hurts and then paint it with one of the substances available from garden shops produced especially for
    this purpose. Pruning is usually without interference from the leaves and also it is very unlikely that the cuts you make will bleed. If this does happen, it is, of course, impossible to paint them properly.
    Trees become unhealthy if the gardener__________.

    A.allows too many branches to grow in the middle
    B.does not protect them from wind
    C.forces them to grow too quickly
    D.damages some of the small side branches

    答案：A
    解析：
    由第二段最后一句“the health of a tree may be encouraged by removing branches that are blocking up the centre”可知，剪去阻塞树木中央空间的枝条可使树木健康生长，那么相反，保留这些枝条则会导致树木长得不健康，因此答案为A。

  • 第5题：

    Which of the following are spanning tree port states?（）

    • A、Learning
    • B、Spanning
    • C、Listening
    • D、Forwarding
    • E、Initializing
    • F、Filtering
    • G、Permitting

    正确答案:A,C,D

  • 第6题：

    For the following ports， which port is on every bridge in a Spanning Tree Protocol IEEE 802.1w network except the root bridge？（）

    • A、root port
    • B、backup port
    • C、designated port
    • D、alternate port

    正确答案:A

  • 第7题：

    Which of the following are shared distribution tree characteristics？ （Choose all that apply.）（）

    • A、Memory requirements are higher for shared distribution tree than for source distribution tree
    • B、Creates a tree from a central RP to all last-hop routers
    • C、Uses a rendezvous point
    • D、An optimal path is created between each source router and each last-hop router
    • E、Place （S，G） entry in each router’s multicast routing table
    • F、Place （*，G） entry in a router’s multicast routing to table

    正确答案:C,F

  • 第8题：

    In which of the following topologies could the failure of one machine cause the entire network tostop functioning?（）

    • A、Mesh
    • B、Token ring
    • C、Star
    • D、Spanning tree

    正确答案:B

  • 第9题：

    多选题
    Which of the following three port types are valid Spanning Tree port types？（Choose the best threeanswers.）（）
    A

    Designated port

    B

    Nonswitch port

    C

    Switch port

    D

    Nonroot port

    E

    Nondesignated port

    F

    Root port


    正确答案： F,A
    解析： 暂无解析

  • 第10题：

    单选题
    Which of the following commands can be issued without interfering with the operation of loop guard？（）
    A

    Switch（config-if）#spanning-tree guard root

    B

    Switch（config-if）#spanning-tree portfast

    C

    Switch（config-if）#switchport mode trunk

    D

    Switch（config-if）#switchport mode access


    正确答案： C
    解析： 暂无解析

  • 第11题：

    多选题
    Which of the following troubleshooting targets is considered to be a Layer 2 issue？（Choose allthat apply.）（）
    A

    Spanning Tree Protocol

    B

    Cabling

    C

    Frame forwarding

    D

    Packet forwarding

    E

    EtherChannel

    F

    Routing protocols


    正确答案： A,B
    解析： 暂无解析

  • 第12题：

    多选题
    Which of the following are spanning tree port states?（）
    A

    Learning

    B

    Spanning

    C

    Listening

    D

    Forwarding

    E

    Initializing

    F

    Filtering

    G

    Permitting


    正确答案： E,D
    解析： 暂无解析

  • 第13题：

    Which of the following are shared distribution tree characteristics()

    A.Memory requirements are higher for shared distribution tree than for source distributiontree.

    B.Creates a tree from a central RP to all last-hoprouters.

    C.Uses a rendezvous point.

    D.An optimal path is created between each source router and each last-hoprouter.

    E.Place（S，G）entry in each router’smulticast routing table.

    F.Place（*，G）entry in a router’smulticast routing to table.


    参考答案：B, C, F

  • 第14题：

    Which command enables RSTP on a switch?()

    A. spanning-tree mode rapid-pvst

    B. spanning-tree uplinkfast

    C. spanning-tree backbonefast

    D. spanning-tree mode mst


    参考答案：A

  • 第15题：

    Trees should only be pruned when there is a good and clear reason for doing so and,
    fortunately, the number of such reasons is small. Pruning involves the cutting away of overgrown and unwanted branches, and the inexperienced gardener can be encouraged by the thought that more damage results from doing it unnecessarily than from leaving the tree to grow in its own way.
    First, pruning may be done to make sure that trees have a desired shape or size. The object may be to get a tree of the right height, and at the same time to help the growth of small side branches which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut diseased or dead wood, or branches that are rubbing against each other and thus cause wounds. The health of a tree may be encouraged by removing branches that are blocking up the centre and so preventing the free movement of air.
    One result of pruning is that an open wound is left on the tree and this provides an easy entry for disease, but it is a wound that will heal. Often there is a race between the healing and the disease as to whether the tree will live or die, so that there is a period when the tree is at risk. It should be the aim of every gardener to reduce which has been pruned smooth and clean, for healing will be slowed down by roughness. You should allow the cut surface to dry for a few hurts and then paint it with one of the substances available from garden shops produced especially for
    this purpose. Pruning is usually without interference from the leaves and also it is very unlikely that the cuts you make will bleed. If this does happen, it is, of course, impossible to paint them properly.
    Pruning should be done to__________.

    A.make the tree grow taller
    B.improve the shape of the tree
    C.get rid of the small branches
    D.make the small branches thicker

    答案：B
    解析：
    由第二段第一句“pruning may be done to make sure that trees have a desired shape or size”可知答案选B，即修剪有时是为了树木有个好外形。

  • 第16题：

    Which of the following words is entirely arbitrary?

    A.tree
    B.typewriter
    C.crash
    D.bang

    答案：A
    解析：
    tree是一个任意词。

    crash是一个缩略语，故排除。

    typewriter是复合词，故排除。

    bang是拟声词，故排除。

    所以只有tree的形成比较任意,综上，A选项正确。

    故A选项正确。

  • 第17题：

    Which of the following troubleshooting targets is considered to be a Layer 2 issue？（Choose allthat apply.）（）

    • A、Spanning Tree Protocol
    • B、Cabling
    • C、Frame forwarding
    • D、Packet forwarding
    • E、EtherChannel
    • F、Routing protocols

    正确答案:A,C,E

  • 第18题：

    Which command enables RSTP on a switch?（）

    • A、spanning-tree mode rapid-pvst
    • B、spanning-tree uplinkfast
    • C、spanning-tree backbonefast
    • D、spanning-tree mode mst

    正确答案:A

  • 第19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20题：

    Which of the following features should an administrator configure to allow an IDS to watch thetraffic on a switch?（）

    • A、ARP spoofing
    • B、VLAN
    • C、Mirroring
    • D、Spanning tree

    正确答案:C

  • 第21题：

    单选题
    Which spanning-tree command would cause a PortFast-enabled interface to lose its PortFast-operational status and disable BPDU filtering if it receives BPDUs？（）
    A

    spanning-tree guard root

    B

    spanning-tree portfast bpduguard default

    C

    spanning-tree bpduguard enable

    D

    spanning-tree bpdufilter enable

    E

    spanning-tree portfast bpdufilter default


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    Which command enables RSTP on a switch?（）
    A

    spanning-tree mode rapid-pvst

    B

    spanning-tree uplinkfast

    C

    spanning-tree backbonefast

    D

    spanning-tree mode mst


    正确答案： A
    解析： 暂无解析

  • 第23题：

    多选题
    Which tree of these are types of Ethernet Virtue Connections （EVCs） in the MEF concept？（）
    A

    multipart-to-multipoint EVC （E-LAN）

    B

    hub spoke EVC （E-Tree）

    C

    point to point EVC （E-Line）

    D

    rooted multipoint EVC （E-Tree）

    E

    point-to-multipoint EVC （E-Tree）


    正确答案： D,A
    解析： 暂无解析

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