?? 模擬考試26.htm
字號:
value=D>D.站點個數<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>29 </TD>
<TD align=left height=212 width=607> 設有某一個令牌環網長度為 400 米，環上有
28 個站點，其數據傳輸率為 4MbpS，環上信號的傳播速度為 200 米/μS，每個站點具有 1bit 時延，則環上可能存在的最大時延是©)
<BR>答： <INPUT class=radio name=text1647
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.9<BR> <INPUT class=radio name=text1647
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.28<BR> <INPUT class=radio name=text1647
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.36<BR> <INPUT class=radio name=text1647
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.48<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>30 </TD>
<TD align=left height=212 width=607> 與線路交換相比，設待傳送數據總長度為 L
位分組長度為 P 位，其中頭部開銷長度為 H 位，源節點到目 的節點之間的鏈路數為 h，每個鍵路上的延遲時間為 D 秒，數據傳輸率為 B
bps，線路交換和虛電路建立連接的時間都為 S 秒，在分組交換方式下每個中間節點產生 d
位的延遲時間，則傳送所有數據，數據報分組交換所需時間為__(15)__秒。©) <BR>答： <INPUT class=radio
name=text1669 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=A>A.
(hd/B+P/B)*[L/(P-H)]<BR> <INPUT class=radio
name=text1669 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.(hD＋P/B)*[L/(P-H)] <BR> <INPUT class=radio
name=text1669 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.[(h-1)d/B+hD+P/B]*[L/(P-H)]<BR> <INPUT
class=radio name=text1669 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=D>D.
[(h-1)d/B+hD+P/B]*[L/P]<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>31 </TD>
<TD align=left height=212 width=607>
透明網橋的基本功能有學習、幀過濾和幀轉發及生成樹算法等功能，因此它可以決定網絡中的路由，而網絡中的各個站點均不負責路由選擇。網橋從其某一端口收到正確的數據幀后，在其地址轉發表中查找該幀要到達的目的站，若要到達的目的站仍然在該端口上，則會___(17)__。©)
<BR>答： <INPUT class=radio name=text1673
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.向該端口轉發此幀<BR> <INPUT class=radio
name=text1673 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.丟棄此幀<BR> <INPUT class=radio name=text1673
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.將此幀作為地址探測幀<BR> <INPUT class=radio
name=text1673 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=D>D.
利用此幀建立該端口的地址轉換表<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>32 </TD>
<TD align=left height=212 width=607> 圖二為一 10Mbps
數據傳輸率下的以太網，其上連接有 10
個站，在理想狀態下每個站的平均數據傳輸率為1Mbps。若通過網橋連接后成為圖三所示的結構時，每個站的實際有效數據傳輸率為__(20)__Mbps。
©) <BR>
<CENTER><IMG border=0 src="模擬考試26.files/200481394623wso3x9.gif">
</CENTER><BR>答： <INPUT class=radio name=text1682
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=A>A.1
至 2<BR> <INPUT class=radio name=text1682
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.1<BR> <INPUT class=radio name=text1682
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.2<BR> <INPUT class=radio name=text1682
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=D>D.0
至 1<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>33 </TD>
<TD align=left height=212 width=607> TCP
是一個面向連接的協議，它提供連接的功能是__(31)__的©) <BR>答： <INPUT class=radio
name=text1703 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=A>A.
全雙工<BR> <INPUT class=radio name=text1703
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.半雙工<BR> <INPUT class=radio name=text1703
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.單工<BR> <INPUT class=radio name=text1703
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.單方向<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>34 </TD>
<TD align=left height=212 width=607> TCP
是一個面向連接的協議，為了提高效率，又引入了滑動窗口協議，這種分組的數量最多可以__(34)__©) <BR>答： <INPUT
class=radio name=text1710 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.是任意的<BR> <INPUT class=radio name=text1710
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.1個<BR> <INPUT class=radio name=text1710
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.大于滑動窗口的大小<BR> <INPUT class=radio
name=text1710 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.等于滑動窗口的大小<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>35 </TD>
<TD align=left height=212 width=607> TCP
是一個面向連接的協議，為了提高效率，又引入了滑動窗口協議，TCP協議采用滑動窗口協議解決了__(35)__。 ©) <BR>答：
<INPUT class=radio name=text1712 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.端到端的流量控制<BR> <INPUT class=radio
name=text1712 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.整個網絡的擁塞控制<BR> <INPUT class=radio
name=text1712 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.端到端的流量控制和網絡的擁塞控制<BR> <INPUT class=radio
name=text1712 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.整個網絡的差錯控制 <BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>36 </TD>
<TD align=left height=212 width=607> N-ISDN
是在__(41)__基礎上建立起來的網絡©) <BR>答： <INPUT class=radio name=text1721
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.電話網<BR> <INPUT class=radio name=text1721
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.有線電視網<BR> <INPUT class=radio name=text1721
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.公用數據網<BR> <INPUT class=radio name=text1721
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.接入網<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>37 </TD>
<TD align=left height=212 width=607> 當使用 RS232C
連接相關設備時，電纜的長度不應超過__(48)__米。©) <BR>答： <INPUT class=radio
name=text1727 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.3<BR> <INPUT class=radio name=text1727
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.12<BR> <INPUT class=radio name=text1727
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.15<BR> <INPUT class=radio name=text1727
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.50<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>38 </TD>
<TD align=left height=212 width=607> 當計算機需要通過相連的 MORDEM
發送數據時，依次設置的信號是__(50)__。©) <BR>答： <INPUT class=radio name=text1957
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.MODEM就緒→
DTE就緒→請求發送→允許發送→發數據→清請求發送→清允許發送→清MODEM就緒→清DTE就緒<BR>
<INPUT class=radio name=text1957 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.MODEM就緒→DTE就緒→請求發送→允許發送→發數據→清請求發送→清允許發送→清DTE就緒→清MODEM就緒<BR>
<INPUT class=radio name=text1957
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.DTE就緒→MODEM就緒→請求發送→允許發送→發數據→清請求發送→清允許發送→清MODEM就緒→清DTE就緒<BR>
<INPUT class=radio name=text1957
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.DTE就緒→MODEM就緒→請求發送→允許發送→發數據→清請求發送→清允許發送→清DTE就緒→清MODEM就緒<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>39 </TD>
<TD align=left height=212 width=607> 信元傳輸采用__(52)__。©) <BR>答：
<INPUT class=radio name=text1959 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=A>A.
TDM<BR> <INPUT class=radio name=text1959
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.FDM<BR> <INPUT class=radio name=text1959
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.WDM<BR> <INPUT class=radio name=text1959
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.ATDM<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>40 </TD>
<TD align=left height=212 width=607> 當進行 VP 交換時，VPI 和 VCI
的變化情況是__(53)__。©) <BR>答： <INPUT class=radio name=text1960
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.VPI變化，VCI不變<BR> <INPUT class=radio
name=text1960 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.VPI不變，VCI變化<BR> <INPUT class=radio
name=text1960 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.VPI變化，VCI變化<BR> <INPUT class=radio
name=text1960 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.VPI不變，VCI不變<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>41 </TD>
<TD align=left height=212 width=607> 指令 ServerAdmin
的作用是__(58)__©) <BR>答： <INPUT class=radio name=text1965
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.設定該WWW服務器的系統管理員賬號<BR> <INPUT class=radio
name=text1965 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
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