在信息系統(tǒng)工程監(jiān)理過程中，總監(jiān)理工程師不能由于（ ）而下達停工令。
A、實施、開發(fā)中出現(xiàn)質量異常情況，經(jīng)提出后承建單位仍不采取改進措施；或者采取的改進措施不力，還未使質量狀況發(fā)生好轉趨勢
B、隱蔽作業(yè)（指綜合布線及系統(tǒng)集成中埋入墻內或地板下的部分）未經(jīng)現(xiàn)場監(jiān)理人員查驗自行封閉、掩蓋
C、承建單位的施工人員沒有按照工程進度計劃執(zhí)行
D、使用沒有技術合格證的工程材料、沒有授權證書的軟件，或者擅自替換、變更工程材料及使用盜版軟件

802.3標準中使用的媒體訪問控制方式是（ ） 。
A、Token Ring
B、Token Bus
C、CSMA/CD
D、ALOHA

TCP/IP協(xié)議分為四層，分別為應用層、傳輸層、網(wǎng)際層和網(wǎng)絡接口層。不屬于應用層協(xié)議的是（1 ） ，屬于網(wǎng)際層協(xié)議的是（2 ） 。
（1）A、SNMP
B、UDP
C、TELNET
D、FTP
（2）A、RPC
B、UDP
C、TCP
D、IP

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 API 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 

 Melissa and LoveLetter made use of the trust that exists between or colleagues.Imagine receiving an (1) from a friend who asks you to open it.This is what happens with Melissa and several other similar email (2) .Upon running,such worms usually proceed to send themselves out to email addresses from the victim’address book,previous emails,web pages (3) .
    As administrators seek to block dangerous email attachments through the recognition of well-known (4) ，virus writers use other extensions to circumvent such protection.Executable(.exe)files are renamed to .bat and .cmd plus a whole list of other extensions and will still run and successfully infect target users.
    Frequently,hackers try to penetrate networks by sending an attachment that looks like a flash movie,which,while displaying some cute animation,simultaneously runs commands in the background to steal your passwouds and give the (5) access to your network.
（1）A、attachment  
B、packet  
C、datagram  
D、message
（2）A、virtual  
B、virus  
C、worms  
D、bacteria
（3）A、memory  
B、caches  
C、ports  
D、registers
（4）A、names  
B、cookies  
C、software  
D、extensions
（5）A、cracker  
B、user  
C、customer  
D、client