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以下关于增加VLAN的好处中,错误的是( )。

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  • 【名词&注释】

    路由器(router)、永久性(permanent)、语法分析(syntax analysis)、子网掩码(subnet mask)、用户群(user group)、必要条件(necessary condition)、重新配置(reconfiguration)、源程序(source program)、编译程序(compiler)、中间代码(intermediate code)

  • [单选题]以下关于增加VLAN的好处中,错误的是( )。

  • A. 广播可以得到控制
    B. 机密数据可以得到保护
    C. 物理的界限限制了用户群的移动
    D. 交换机不需要重新配置(reconfiguration)

  • 查看答案&解析 点击获取本科目所有试题
  • 举一反三:
  • [单选题]若类A仅在其方法Methodl中定义并使用了类B的一个对象,类A其它部分的代码都不涉及类B,那么类A与类B的关系应为( );若类A的某个属性是类B的一个对象,并且类A对象消失时,类B对象也随之消失,则类A与类B的关系应为( )。
  • A. 关联
    B. 依赖
    C. 聚合
    D. 组合

  • [多选题]假设用户Q1有2000台主机,则必须给他分配____个C类网络,如果分配给用户Q1的超网号为200.9.64.0,则指定给Q1的地址掩码为____;假设给另一用户Q2分配的C类网络号为200.9.16.0~200.9.31.0,如果路由器收到一个目标地址为11001000 00001001 01000011 00100001的数据报,则该数据报应送给用户__.
  • A. 4
    B. 8
    C. 10
    D. 16@@@SXB@@@A. 255.255.255.0
    E. 255.255.250.0
    F. 255.255.248.0
    G. 255.255.240.0@@@SXB@@@A. Q1
    H. Q2
    I. Q1或Q2
    J. 不可到达

  • [多选题]● Observe that for the programmer, as for the chef, the urgency of the patron(顾客) may govern the scheduled completion of the task, but it cannot govern the actual completion. An omelette(煎鸡蛋), promised in two minutes, may appear to be progressing nicely. But when it has not set in two minutes, the customer has two choices—waits or eats it raw. Software customers have had (71) choices.Now I do not think software (72) have less inherent courage and firmness than chefs, nor than other engineering managers. But false (73) to match the patron's desired date is much more common in our discipline than elsewhere in engineering. It is very (74) to make a vigorous, plausible, and job risking defense of an estimate that is derived by no quantitative method, supported by little data, and certified chiefly by the hunches of the managers.
  • A. Clearly two solutions are needed. We need to develop and publicize productivity figures, bug-incidence figures, estimating rules, and so on. The whole profession can only profit from (75) such data. Until estimating is on a sounder basis, individual managers will need to stiffen their backbones and defend their estimates with the assurance that their poor hunches are better than wish derived estimates.
    B. (71)
    C. no
    D. the same
    E. other
    F. lots of
    G. (72)
    H. testers
    I. constructors
    J. managers
    K. architects
    L. (73)
    M. tasks
    N. jobs
    O. works
    P. scheduling
    Q. (74)
    R. easy
    S. difficult
    T. simple
    U. painless
    V. (75)
    W. sharing
    X. excluding
    Y. omitting
    Z. ignoring

  • [单选题]以下关于高级语言程序的编译和解释的叙述中,正确的是(48)。
  • A. 编译方式下,可以省略对源程序(source program)的词法分析、语法分析
    B. 解释方式下,可以省略对源程序(source program)的词法分析、语法分析
    C. 编译方式下,在机器上运行的目标程序完全独立于源程序(source program)
    D. 解释方式下,在机器上运行的目标程序完全独立于源程序(source program)

  • [单选题]产生死锁的4个必要条件为:互斥条件、请求保持条件、(56)、环路条件。
  • A. 永久性条件
    B. 相互等待条件
    C. 不可剥夺条件
    D. 资源均分条件

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