状态转移矩阵 (state transition matrix)
状态转移矩阵 (state transition matrix)
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阅读以下说明及Visual Basic程序代码，将应填入(n)处的字句写在对应栏内。[说明]本程序提供了三阶矩阵加、减及乘运算的功能。用户单击“生成操作数”按钮将随机生成两个矩阵(即操作数1和操作数2)，再单击某一矩阵运算按钮后，程序将输出相应运算的结果。程序运行界面如下：开发过程中，界面上从左至右三个文本框分别取名为Text1至Text3，“生成操作数”按钮名为 CmdNew，“+”、“-”和“*”构成按钮控件组，分别名为CmdOperate(0)、CmdOperate(1)和CmdOperate(2)。已知n阶矩阵加、减法运算法则是对应位置的元素相加、减；n阶矩阵的乘法C=AB有公式：Cij=AilBij+AilBij+…+An1Bnj其中记号Xij表示矩阵X第i行第j列上的元素。程序使用的主要变量是三维数组matrix(3，3，3)，其元素matrix(i，j，k)代表第i个矩阵j行k列上的元素，这里i，j，k均从0开始计数，第0、1、2个矩阵分别表示操作数1、操作数2和结果矩阵。代码中用到的子过程及其功能说明如下：(1) Sub newMatrices():随机产生矩阵运算的两个操作数；(2) Sub printOut(txt As TextBox, i As Integcr):定义矩阵i向文本框txt的输出格式；(3) Sub operate(operation As String):计算并输出矩阵运算结果。[Visual Basic代码]Dim matrix(3, 3, 3) As IntegerSub newMatrices()……… End SubSub printOut(txt As TextBox, i As Integer)……… End SubSub operate(operation As String)Dim i, j, k As IntegerFor i = 0 To 2For j = 0 To 2(1)Case"+": matrix(2, i, j) = matrix(0, i, j) + matrix(1, i, j)Case"-": matrix(2, i, j) = matrix(0, i, j) - matrix(1, i, j)Case"*"matrix(2, i, j) = 0For k = 0 To 2matrix(2, i, j) = matrix(2, i, j) +(2)NextEnd SelectNextNextprintOut (3)End SubPrivate Sub CmdNew_Cliek() ’“生成操作数”按钮的单击事件响应代码(4)printout Text1，0printout Text2，1End SubPrivate Sub CmdOperale_Click(Index As Integer) ’矩阵运算按钮组的单击事件响应代码operate CmdOperate(Index).(5)End Sub
一个BCSM(基本呼叫状态模型)成分由哪些要素组成()。 A.检出点DP（DetectionPoint）B.转移过程（Transition）C.事件（Events）D.呼叫点PIC（PointInCall）
How are STP timers and state transitions affected when a topology change occurs in an STP environment？（）A、All ports will temporarily transition to the learning state for a period equal to the max age timer plus the forward delay interval.B、All ports will transition temporarily to the learning state for a period equal to the forward delay interval.C、The default aging time for MAC address entries will be reduced for a period of the max age timer plus the forward delay interval.D、The default hello time for configuration BDPUs will be reduced for the period of the max age timer.
After DUAL calculations, a router has identified a successor route, but no routes have qualified as a feasible successor. In the event that the current successor goes down, what process will EIGRP use in the selection of a new successor?（）A、EIGRP will automatically use the route with the lowest advertised distance (AD) .B、The route will transition to the active state.C、The route will transition to the passive state.D、EIGRP will find the interface with the lowest MAC address.E、EIGRP will automatically use the route with the lowest feasible distance (FD).
关于状态转移transition，下面说法错误的是（）A、描述一个状态转移应包含： Trigger、Guard、EffectB、当Trigger发生，且Guard条件满足时，在执行Effect之后，将发生状态转移C、当Trigger发生，不论Guard条件是否满足，在执行Effect之后，将发生状态转移D、当Trigger发生，如果Guard条件不满足，就不执行Effect，也不会发生状态转移
一个BCSM（基本呼叫状态模型）成分由哪些要素组成（）。A、检出点DP（DetectionPoint）B、转移过程（Transition）C、事件（Events）D、呼叫点PIC（PointInCall）
STD总线中“STD”是以下哪一项的缩写？（）A、State Transition DiagramB、Subscriber Trunk DialingC、Sexually Transmitted DiseaseD、Standard
单选题How are STP timers and state transitions affected when a topology change occurs in an STP environment？（）AAll ports will temporarily transition to the learning state for a period equal to the max age timer plus the forward delay interval.BAll ports will transition temporarily to the learning state for a period equal to the forward delay interval.CThe default aging time for MAC address entries will be reduced for a period of the max age timer plus the forward delay interval.DThe default hello time for configuration BDPUs will be reduced for the period of the max age timer.
单选题A port in a redundant topology is currently in the blocking state and is not receiving BPDUs. To ensure that this port does not erroneously transition to the forwarding state， which command should be configured to satisfy the requirement？（）ASwitch（config）#spanning-tree loopguard defaultBSwitch（config-if）#spanning-tree bdpufilterCSwitch（config）#udld aggressiveDSwitch（config-if）#spanning-tree bpduguard
单选题After DUAL calculations, a router has identified a successor route, but no routes have qualified as a feasible successor. In the event that the current successor goes down, what process will EIGRP use in the selection of a new successor?（）AEIGRP will automatically use the route with the lowest advertised distance (AD) .BThe route will transition to the active state.CThe route will transition to the passive state.DEIGRP will find the interface with the lowest MAC address.EEIGRP will automatically use the route with the lowest feasible distance (FD).
多选题一个BCSM（基本呼叫状态模型）成分由哪些要素组成（）。A检出点DP（DetectionPoint）B转移过程（Transition）C事件（Events）D呼叫点PIC（PointInCall）
单选题从左到右型HMM（即状态的转移只能从左到右或者停留在原状态，不能返回到以前的状态）的状态转移矩阵具有何种形式？（）A上三角矩阵；B下三角矩阵；C对称矩阵；D非奇异矩阵；