?? 模擬考試26.htm
字號:
value=B>B.設(shè)定系統(tǒng)管理員的電子郵件地址<BR> <INPUT class=radio
name=text1965 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.指明服務(wù)器運行時的用戶賬號，服務(wù)器進程擁有該賬號的所有權(quán)限<BR> <INPUT
class=radio name=text1965 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.指定服務(wù)器 WWW 管理界面的 URL，包括虛擬目錄、監(jiān)聽端口等信息<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>42 </TD>
<TD align=left height=212 width=607> 設(shè)置 index.html 或
default.html 為目錄下默認(rèn)文檔的指令是__(59)__©) <BR>答： <INPUT class=radio
name=text1966 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.IndexOptions<BR> <INPUT class=radio
name=text1966 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.DirectoryIndex<BR> <INPUT class=radio
name=text1966 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.DirectoryDefault<BR> <INPUT class=radio
name=text1966 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.Indexlgnore<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>43 </TD>
<TD align=left height=212 width=607>
圖為曼徹斯特編碼這種編碼適用的網(wǎng)絡(luò)是___(2)___。 ©) <BR>
<CENTER><IMG border=0 src="模擬考試26.files/20048131658261.bmp">
</CENTER><BR>答： <INPUT class=radio name=text1969
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.廣域網(wǎng)<BR> <INPUT class=radio name=text1969
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.城域網(wǎng)<BR> <INPUT class=radio name=text1969
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.局域網(wǎng)<BR> <INPUT class=radio name=text1969
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.任意網(wǎng)<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>44 </TD>
<TD align=left height=212 width=607> 設(shè)某編碼體制的編碼方法為：輸入數(shù)據(jù)、( m =
1,2,… )，發(fā)送時，首先計算 bm = (aM+bm-1 ) MOD 2，發(fā)送的編碼為 Cm =
bm-bm-1。收到的編碼為Cm，其譯碼方法可表示為___(5)___。©) <BR>答： <INPUT class=radio
name=text1971 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=A>A.
C+Cm-1<BR> <INPUT class=radio name=text1971
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.Cm-Cm-1<BR> <INPUT class=radio name=text1971
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=C>C.
Cm MOD 2<BR> <INPUT class=radio name=text1971
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.(Cm-Cm-1)MoD 2<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>45 </TD>
<TD align=left height=212 width=607> 元是信元交換的單位。為控制差錯，在信元中包括
CRC 校驗和，校驗和對___(7)___進行校驗。 ©) <BR>答： <INPUT class=radio
name=text1973 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.整個信元<BR> <INPUT class=radio name=text1973
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.信元頭<BR> <INPUT class=radio name=text1973
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.信元載荷(用戶數(shù)據(jù))<BR> <INPUT class=radio
name=text1973 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.信元的地址域<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>46 </TD>
<TD align=left height=212 width=607>
信元交換過程中出現(xiàn)擁塞，該信息被記錄在信元的___(10)___中。 ©) <BR>答： <INPUT class=radio
name=text1976 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=A>A.
GPC<BR> <INPUT class=radio name=text1976
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=B>B.
VPI<BR> <INPUT class=radio name=text1976
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.CLP <BR> <INPUT class=radio name=text1976
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.PT<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>47 </TD>
<TD align=left height=212 width=607> 當(dāng)數(shù)據(jù)發(fā)送完畢，計算機向 MODEM
發(fā)送的信號是清除___(13)___©) <BR>答： <INPUT class=radio name=text1979
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=A>A.
'DTE就緒'<BR> <INPUT class=radio name=text1979
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.'請求發(fā)送'<BR> <INPUT class=radio name=text1979
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.'MODEM就緒'<BR> <INPUT class=radio
name=text1979 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.'允許發(fā)送'<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>48 </TD>
<TD align=left height=212 width=607> 計算機向 MODEM 發(fā)送的信號后MODEM
隨后向計算機發(fā)送清除___(14)___信號作為應(yīng)答。 ©) <BR>答： <INPUT class=radio
name=text1980 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=A>A.
'DTE就緒'<BR> <INPUT class=radio name=text1980
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.'請求發(fā)送'<BR> <INPUT class=radio name=text1980
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.'MODEM就緒'<BR> <INPUT class=radio
name=text1980 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=D>D.
'允許發(fā)送'<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>49 </TD>
<TD align=left height=212 width=607> 當(dāng)使用 RS-232
通信時，通常需要使用速率匹配功能，完成該功能的協(xié)議是___(15)___。©) <BR>答： <INPUT class=radio
name=text1981 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.TELNET<BR> <INPUT class=radio name=text1981
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=B>B.
XON/XOFF<BR> <INPUT class=radio name=text1981
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.KERMIT<BR> <INPUT class=radio name=text1981
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.XMODEM<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>50 </TD>
<TD align=left height=212 width=607> 對一路信號進行 FSK 調(diào)制時，若載波頻率為
fc , 調(diào)制后的信號頻率分別為 f1 和 f2 (f1<F2)，當(dāng)對多路信號進行調(diào)制時，調(diào)制后各信號的頻譜___(17)___。 <br
©)> 答： <INPUT class=radio name=text1983
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.相同<BR> <INPUT class=radio name=text1983
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.部分重疊<BR> <INPUT class=radio name=text1983
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.連續(xù)<BR> <INPUT class=radio name=text1983
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.不重疊且不連續(xù)<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>51 </TD>
<TD align=left height=212 width=607> 對一路信號進行 FSK
調(diào)制時信號到達接收端后通過___(18)___分離各路信號。 ©) <BR>答： <INPUT class=radio
name=text1984 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.解調(diào)器<BR> <INPUT class=radio name=text1984
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.帶通濾波器<BR> <INPUT class=radio name=text1984
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.載波發(fā)生器<BR> <INPUT class=radio name=text1984
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.終端軟件<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>52 </TD>
<TD align=left height=212 width=607> WDM 與 FDM 工作方式相似， WDM
調(diào)制的是___(19)___。©) <BR>答： <INPUT class=radio name=text1985
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.時間<BR> <INPUT class=radio name=text1985
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.頻率<BR> <INPUT class=radio name=text1985
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.波長<BR> <INPUT class=radio name=text1985
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.相位<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>53 </TD>
<TD align=left height=212 width=607>
網(wǎng)絡(luò)協(xié)議是計算機網(wǎng)絡(luò)和分布系統(tǒng)中互相通信的___(21)___間交換信息時必須遵守的規(guī)則的集合。©) <BR>答： <INPUT
class=radio name=text1987 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.相鄰層實體<BR> <INPUT class=radio name=text1987
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.同等層實體<BR> <INPUT class=radio name=text1987
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.同一層實體<BR> <INPUT class=radio name=text1987
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.不同層實體<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>54 </TD>
<TD align=left height=212 width=607> 路由信息協(xié)議 RIP 是內(nèi)部網(wǎng)關(guān)協(xié)議 IGP
中使用得最廣泛的一種基于___(25)___的協(xié)議©) <BR>答： <INPUT class=radio name=text1991
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.鏈路狀態(tài)路由算法<BR> <INPUT class=radio
name=text1991 onblur="this.className?? 快捷鍵說明
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