?? 模擬考試16.htm
字號:
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.與它相鄰的路由器的地址<BR> <INPUT class=radio
name=text1596 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.所有目標結點的URL<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>29 </TD>
<TD align=left height=212 width=607>
在自治系統內部的各個路由器之間,運行的是內部網關協議IGP。在不同自治系統的路由器之間,運行外部網關協議EGP,典型的EGP是 (60) 。©)
<BR>答: <INPUT class=radio name=text1599
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.RIP<BR> <INPUT class=radio name=text1599
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.GGP<BR> <INPUT class=radio name=text1599
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.BGP<BR> <INPUT class=radio name=text1599
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.OSPP<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>30 </TD>
<TD align=left height=212 width=607> 幀中繼網的虛電路建立在 (61) ©)
<BR>答: <INPUT class=radio name=text1600
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.數據鏈路層<BR> <INPUT class=radio name=text1600
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.網絡層<BR> <INPUT class=radio name=text1600
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.傳輸層<BR> <INPUT class=radio name=text1600
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.會話層<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>31 </TD>
<TD align=left height=212 width=607>
如果沿著幀傳送方向出現了擁塞,則把幀地址字段中的, (63) 位設置為1©) <BR>答: <INPUT class=radio
name=text1603 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.BECN<BR> <INPUT class=radio name=text1603
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.FECN<BR> <INPUT class=radio name=text1603
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.DECN<BR> <INPUT class=radio name=text1603
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.TECN<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>32 </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>33 </TD>
<TD align=left height=212 width=607> 根據奈奎斯特第一定理,為了保證傳輸質量,為達到
3KbpS 的數據傳輸車需要的帶寬為___(9)___。©) <BR>答: <INPUT class=radio
name=text1657 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.3KHz<BR> <INPUT class=radio name=text1657
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.6KHz<BR> <INPUT class=radio name=text1657
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.2KHz<BR> <INPUT class=radio name=text1657
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.56KHz<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>34 </TD>
<TD align=left height=212 width=607> 與線路交換相比,最大的缺點是__(12)__©)
<BR>答: <INPUT class=radio name=text1663
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.增大延遲<BR> <INPUT class=radio name=text1663
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.不能實現鏈路共享<BR> <INPUT class=radio
name=text1663 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.不能實現速率轉換<BR> <INPUT class=radio
name=text1663 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.不能滿足實時應用要求<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>35 </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,虛電路分組交換所需時間為__(14)__秒©) <BR>答: <INPUT class=radio
name=text1667 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.S+(hd/B+P/B)*[L/(P-H)]<BR> <INPUT
class=radio name=text1667 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.S+(hD+P/B)*[L/(P-H)]<BR> <INPUT class=radio
name=text1667 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=C>C.
S+[(h-1)D+P/B]*[L/(P-H)]<BR> <INPUT class=radio
name=text1667 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.S+[(h-1)d/B+hD+P/B]*{L/(P-H)]<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>36 </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>37 </TD>
<TD align=left height=212 width=607> 圖一為兩個局域網 LAN1 和 LAN2
通過網橋 1 和網橋 2 互連后形成的網絡結構。設站 A
發送一個幀,但其目的地址均不在這兩個網橋的地址轉發表中,為了有效地解決該類問題,可以在每個網橋中引入生成樹算法,這樣一來__(19)__。 ©)
<BR>
<CENTER><IMG border=0 src="模擬考試16.files/200481394349wso3x8.gif">
</CENTER><BR>答: <INPUT class=radio name=text1679
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.網絡資源也會得到充分利用<BR> <INPUT class=radio
name=text1679 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.網絡的最佳路由也會得到確定<BR> <INPUT class=radio
name=text1679 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.也限制了網絡規模<BR> <INPUT class=radio
name=text1679 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.也增加了網絡延時<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>38 </TD>
<TD align=left height=212 width=607> 在使用路由器 R 的 TCP/IP
網絡中,兩主機通過一路由器互聯,提供主機 A 和主機 B 應用層之間通信的層是__(21)__©) <BR>答: <INPUT
class=radio name=text1684 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.應用層<BR> <INPUT class=radio name=text1684
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.傳輸層<BR> <INPUT class=radio name=text1684
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.IP層<BR> <INPUT class=radio name=text1684
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.網絡接口層<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>39 </TD>
<TD align=left height=212 width=607> 在使用路由器 R 的 TCP/IP
網絡中,兩主機通過一路由器互聯,提供機器之間通信的層是__(22)__©) <BR>答: <INPUT class=radio
name=text1688 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.應用層<BR> <INPUT class=radio name=text1688
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.傳輸層<BR> <INPUT class=radio name=text1688
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=C>C.
IP層<BR> <INPUT class=radio name=text1688
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.網絡接口層<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>40 </TD>
<TD align=left height=212 width=607> 對照 ISO/OSI
參考模型各個層中的網絡安全服務,在數據鏈路層,可以采用__(27)__進行鏈路加密©) <BR>答: <INPUT
class=radio name=text1694 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.公鑰基礎<BR> <INPUT class=radio name=text1694
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.Kerberos 鑒別<BR> <INPUT class=radio
name=text1694 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.通信保密機 <BR> <INPUT class=radio name=text1694
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=D>D.CA
認證中心<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>41 </TD>
<TD align=left height=212 width=607> 對照 ISO/OSI
參考模型各個層中的網絡安全服務,在網絡層可以采用__(28)__來處理信息內外網絡邊界流動和建立透明的安全加密信道©) <BR>答:
<INPUT class=radio name=text1697 onblur="this.className='radio'"
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