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網(wǎng)絡工程師每日一練試題內(nèi)容（2022/1/31）

試題1：

Border Gateway Protocol(BGP) is inter-autonomous system  (1)  protocol. BGP is based on a routing method called path vector routing. Distance vector routing is not a good candidate for inter-autonomous system routing because there are occasions on which the route with the smallest  (2)  count is not the preferred route. For example, we may not want a packet through an autonomous system that is not secure even though it is shortest route. Also, distance vector routing is unstable due to the fact that the routers announce only the number of hop counts to the destination without defining the path that leads to that  (3)  . A router that receives a distance vector advertisement packet may be fooled if the shortest path is actually calculated through the receiving router itself. Link  (4)  routing is also not a good candidate for inter-autonomous system routing because an internet is usually too big for this routing method. To use link state routing for the whole internet would require each router to have a huge link state database. It would also take a long time for each router to calculate its routing  (5)  using the Dijkstra algorism.
（1）A、routing
B、switching
C、transmitting
D、receiving
（2）A、path
B、hop
C、route
D、packet
（3）A、connection
B、window
C、source
D、destination
（4）A、status
B、search
C、state
D、research
（5）A、table
B、state
C、metric
D、cost

試題解析與討論：www.jycxcx.com/st/92253176.html
試題參考答案：A、B、D、C、A

試題2：

以下域名服務器中，沒有域名數(shù)據(jù)庫的  （ ）  。
A、緩存域名服務器
B、主域名服務器
C、輔助域名服務器
D、轉發(fā)域名服務器

試題解析與討論：www.jycxcx.com/st/90643121.html
試題參考答案：A

試題3：

可以用數(shù)字信號對模擬載波的不同參量時行調制，下圖所示的調制方式稱為（ ）

A、ASK
B、FSK
C、PSK
D、DPSK
試題解析與討論：www.jycxcx.com/st/233437874.html
試題參考答案：C

試題4：

私網(wǎng)地址用于配置公司內(nèi)部網(wǎng)絡，下面選項中，  （ ）  屬于私網(wǎng)地址。
A、128.168.10.1
B、10.128.10.1
C、127.10.0.1
D、172.15.0.1

試題解析與討論：www.jycxcx.com/st/89133069.html
試題參考答案：B

試題5：  路由器的(   )接口通過光纖連接廣城網(wǎng)。
A.SFP端口
B.同步串行口
C.Console 接口
D.AUX 端口
試題解析與討論：www.jycxcx.com/st/404703532.html
試題參考答案：A

試題6：

漸增式開發(fā)方法有利于 （ ） 。
A、獲取軟件需求
B、快速開發(fā)軟件
C、大型團隊開發(fā)
D、商業(yè)軟件開發(fā)

試題解析與討論：www.jycxcx.com/st/85352939.html
試題參考答案：A

試題7：

DOM is a platform- and language- （1） API that allows programs and scripts to dynamically access and update the content, structure and style of WWW documents（currently, definitions for HTML and XML documents are part of the specification）. The document can be further processed and the results of that processing can be incorporated back into the presented  （2） . DOM is a  （3） -based AP1 to documents, which requires the whole document to be represented in  （4）  while processing it. A simpler alternative to DOM is the event-based SAX, which can be used to process very large （5） documents that do not fit into the memory available for processing.
（1）A、specific
B、neutral
C、contained
D、related
（2）A、text
B、image
C、page
D、graphic
（3）A、table
B、tree
C、control
D、event
（4）A、document
B、processor
C、disc
D、memory
（5）A、XML
B、HTML
C、script
D、Web

試題解析與討論：www.jycxcx.com/st/84722917.html
試題參考答案：B、C、B、D、A

試題8：

如果子網(wǎng)172.6.32.0/20被劃分為子網(wǎng)172.6.32.0/26，則下面的結論中正確的是( )。
A、被劃分為62個子網(wǎng)
B、每個子網(wǎng)有64個主機地址
C、被劃分為32個子網(wǎng)
D、每個子網(wǎng)有62個主機地址

試題解析與討論：www.jycxcx.com/st/92673191.html
試題參考答案：D

試題9：  如果網(wǎng)絡結點傳輸lobit數(shù)據(jù)需要1×10-8s，則該網(wǎng)絡的數(shù)據(jù)傳輸速率為（?。?br />A.10Mbps
B.1Gbps
C.100Mbps
D.10Gbps
試題解析與討論：www.jycxcx.com/st/315924670.html
試題參考答案：B

試題10： 為確保連接的可靠建立TCP采用的技術是（　）
A.4次重發(fā)
B.3次重發(fā)
C.4次握手
D.3次握手
試題解析與討論：www.jycxcx.com/st/3161818239.html
試題參考答案：D