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  • [多选题] What make it is difficult to agree on how to count viruses?

    • A、new virus arise from an existing virus
    • B、some viruses can use polymorphic technique
    • C、just a trivial change may create a new virus
    • D、some viruses can create different versions when they infect other programs

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  • 1、[多选题]The Application layer in TCP/IP Model is correspond to________in OSI Model

    • A、Network Layer
    • B、Session Layer
    • C、Application Layer
    • D、Presentation Layer
    • E、Transport Layer
  • 2、[多选题]Windows 2000’sadvantages are lies in the sections that follow:

    • A、Networking
    • B、Enterprise Management
    • C、Storage
    • D、Active Directory
  • 3、[多选题]The World Wide Web is a huge set of(),linked by hyperlinks and URLs.

    • A、all kinds of data
    • B、interlinked documents
    • C、pages
    • D、images
    • E、flash
  • 4、[多选题]()is a type of executable file.

    • A、EXE file
    • B、COM file
    • C、JPG file
    • D、TXT file
  • 5、[多选题]A program is a sequence of________that can be executed by a computer.It can either be built into the hardware or exist inde pendently in the form of________.

    • A、data
    • B、hardware
    • C、instructions
    • D、software

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