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

题目

In the following statements about graph operations，which one is NOT correct?

A．Finding critical path is an operation on directed graph

B．Finding critical path is an operation on undirected graph

C．Spanning tree of a graph may not be unique

D．Minimum spanning tree of a graph may not be unique

相似考题

1.The critical path is calculated byA.subtracting the end date of task one from the start date of task two.B.determining which tasks have the least amount of total slack.C.totaling the time for all activities.D.determining the shortest path through the network.E.Determining which tasks have the most slack

2.Assume that you have a network where an activity on the critical path can be crashed by two weeks. If the activity is actually crashed by two weeks, then:A.The project's schedule will be reduced by weeks.B.The available slack on the noncritical paths will increase.C.A new critical path may appear after the crash.D.All of the above.E.A and B only.

3.The schedule risk is the _____ .A the accumulated "expected' durations which maintain project completion.B Critical Path adjusted by "high-risk" activity float.C highest risk path that maintains quality.D Critical Path when calculated with "most likely" duration.E highest risk path that contributes the most risk toward the project completion.

4.Which of the following impacts the critical path?A.Changing the task duration.B.Reduce the free float of an activity.C.Executing a backward passD.A or BE.None of the above.

参考答案和解析
正确答案：B
更多“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 ”相关问题

  • 第1题：

    112 The schedule risk is the _____ .

    A. the accumulated "expected' durations which maintain project completion.

    B. Critical Path adjusted by "high-risk" activity float.

    C. highest risk path that maintains quality.

    D. Critical Path when calculated with "most likely" duration.

    E. highest risk path that contributes the most risk toward the project completion


    正确答案：B

  • 第2题：

    ● Which of the following impacts the critical path?

    A Changing the task duration.

    B Reduce the free float of an activity.

    C Executing a backward pass

    D A or B

    E None of the above.


    正确答案：A

  • 第3题：

    In the following kinds of graphs, which one's adjacency matrix is symmetric?

    A．Directed graph

    B．Undirected graph

    C．AOV network

    D．AOE network


    正确答案：B

  • 第4题：

    In project network diagram ，the number of critical path is （　）.

    A.none
    B.only one
    C.only two
    D.one or more

    答案：D
    解析：
    参考译文在项目网络图中，关键路径有（）条。A.没有 B.只有一条 C.只有两条 D.一条或者多条

  • 第5题：

    Which of the following technologies can be used in distance vector routing protocols to prevent routing loops?（）

    • A、Spanning Tree Protocol
    • B、Shortest path first tree
    • C、Link-state advertisements (LSA)
    • D、Hold-down timers
    • E、Split horizon
    • F、VRP

    正确答案:D,E

  • 第6题：

    Which two statements about an IDS are true？（）

    • A、The IDS is in the traffic path.
    • B、The IDS can send TCP resets to the source device.
    • C、The IDS can send TCP resets to the destination device.
    • D、The IDS listens promiscuously to all traffic on the network.
    • E、Default operation is for the IDS to discard malicious traffic.

    正确答案:B,D

  • 第7题：

    Spanning Tree Protocol calculates path cost based on which of these？ （）

    • A、 interface bandwidth
    • B、 interface delay
    • C、 interface bandwidth and delay
    • D、 hop count
    • E、 bridge priority

    正确答案:A

  • 第8题：

    Network A has a spanning-tree problem in which the traffic is selecting a longer path. How is the path cost calculated？（）

    • A、number of hops
    • B、priority of the bridge
    • C、interface bandwidth
    • D、interface delay
    • E、None of the above

    正确答案:C

  • 第9题：

    多选题
    Which two statements about spanning tree path cost are true？（）
    A

    The path cost can be changed for an interface using the spanning-tree cost command

    B

    The path cost can be changed for an interface using the stp path-cost command

    C

    The SPT default path cost depends on the interface speed

    D

    The STP default path cost is similar for all interface


    正确答案： D,A
    解析： 暂无解析

  • 第10题：

    单选题
    Network A has a spanning-tree problem in which the traffic is selecting a longer path. How is the path cost calculated？（）
    A

    number of hops

    B

    priority of the bridge

    C

    interface bandwidth

    D

    interface delay

    E

    None of the above


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    Spanning Tree Protocol calculates path cost based on which of these？（）
    A

    interface bandwidth

    B

    interface delay

    C

    interface bandwidth and delay

    D

    hop count

    E

    bridge priority


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    The temperature of the fuel oil received during bunkering operation is critical in determining the （）
    A

    expansion space to leave in a tank

    B

    flash point at which the fuel will burn

    C

    temperature to which the fuel must be heated

    D

    rate at which the fuel can be pumped during transfer operations


    正确答案： D
    解析： 暂无解析

  • 第13题：

    ● The critical path is calculated by

    A subtracting the end date of task one from the start date of task two.

    B determining which tasks have the least amount of total slack.

    C totaling the time for all activities.

    D determining the shortest path through the network.

    E Determining which tasks have the most slack


    正确答案：B

  • 第14题：

    ● Your team has prepared a CPM schedule for your review. You notice that one node has six inputs (including two dummy activities) and four outputs (which include one dummy activity). Select the correct statement from the following:

    A This is a valid representation if the logic is correct.

    B This is invalid because a node can have a maximum of one dummy input representation if the logic is correct.

    C This is invalid because nodes cannot have both dummy inputs and dummy outputs.

    D This is a invalid because the number of outputs must equal the number of inputs.

    E This is invalid because a maximum of two inputs and two outputs are allowed using the critical path method.


    正确答案：A

  • 第15题：

    Which of the following statements is mot correct about mirroring?()

    A.Mirroring, with the write-verify option turned on, can be used to increase performance.

    B.Mirroring is a better choice that disk-striping, for large sequential-access file system when one is looking for performance.

    C.Mirroring, with a parallel-scheduling policy, may improve I/O read-operation performance.

    D.Mirroring, with maximum inter-disk allocation policy, is used to enhance availability.


    参考答案：C

  • 第16题：

    In?project?net work?diagram,the?number?of?critical?path?is（）。

    A.none
    B.only?one
    C.only?two
    D.one?or?more

    答案：D
    解析：
    本题翻译：在项目网络工作图中，关键路径的数目是（）。
    A.没有B.只有一个C.只有两个D.一个或更多
    本题考查的是进度管理中的关键路径，正确选项为D一个或更多。
    在一个网络图中关键路径有一条或多条，关键路径是项目中时间最长的活动顺序，决定着可能的项目最短工期。

  • 第17题：

    Which two statements about spanning tree path cost are true？（）

    • A、The path cost can be changed for an interface using the spanning-tree cost command
    • B、The path cost can be changed for an interface using the stp path-cost command
    • C、The SPT default path cost depends on the interface speed
    • D、The STP default path cost is similar for all interface

    正确答案:A,C

  • 第18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19题：

    By default, which of the following factors determines the spanning-tree path cost?（）

    • A、It is the individual link cost based on latency
    • B、It is the sum of the costs based on bandwidth
    • C、It is the total hop count
    • D、It is dynamically determined based on load

    正确答案:B

  • 第20题：

    Which of the following statements is mot correct about mirroring?（）

    • A、Mirroring, with the write-verify option turned on, can be used to increase performance.
    • B、Mirroring is a better choice that disk-striping, for large sequential-access file system when one is looking for performance.
    • C、Mirroring, with a parallel-scheduling policy, may improve I/O read-operation performance.
    • D、Mirroring, with maximum inter-disk allocation policy, is used to enhance availability.

    正确答案:C

  • 第21题：

    单选题
    The most critical part of the bunkering operations, which can result in an oil spill, is when the （）
    A

    hose joints are made up

    B

    tanks are being topped off

    C

    system is being lined up

    D

    pumping operation is first started


    正确答案： C
    解析： 暂无解析

  • 第22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23题：

    单选题
    By default, which of the following factors determines the spanning-tree path cost?（）
    A

    It is the individual link cost based on latency

    B

    It is the sum of the costs based on bandwidth

    C

    It is the total hop count

    D

    It is dynamically determined based on load


    正确答案： D
    解析： 暂无解析

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