A+ Essentials Chapter 22

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A Plus Essential Quizzes & Trivia

The Internet

In this chapter, you will learn how to

• Explain how the Internet works
• Connect to the Internet
• Use Internet software tools


Questions and Answers
  • 1. 

    Of the four Internet connection options listed below, which typically offersthe slowest connection speed?

    • A.

      Cable

    • B.

      Dial-up

    • C.

      DSL

    • D.

      Satellite

    Correct Answer
    B. Dial-up
    Explanation
    Dial-up connections are robust and widely-available, but slower than the
    newer connection types.

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  • 2. 

    Which of the following technologies use dial-up connections? (Select allthat apply.)

    • A.

      Cable modem

    • B.

      DSL receiver

    • C.

      ISDN TA

    • D.

      Modem

    Correct Answer(s)
    C. ISDN TA
    D. Modem
    Explanation
    ISDN terminal adapters and traditional modems use dial-up for
    connecting to the Internet.

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  • 3. 

    What advantages does dial-up have over DSL?

    • A.

      Dial-up is faster than DSL

    • B.

      You can be farther than 18,000 feet from a main phone service switching center.

    • C.

      You can get a second phone line to use just for dial-up.

    • D.

      None. Dial-up has no advantages over DSL.

    Correct Answer
    B. You can be farther than 18,000 feet from a main phone service switching center.
    Explanation
    DSL has a fairly short limit of 18,000 feet from a main switch, leaving
    people in rural areas (in the U.S., at least) out of luck. Dial-up just requires
    a phone line.

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  • 4. 

    Which protocol can you use to send e-mail?

    • A.

      IMAP

    • B.

      POP3

    • C.

      PPP

    • D.

      SMTP

    Correct Answer
    D. SMTP
    Explanation
    You can use SMTP to send e-mail messages.

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  • 5. 

    Which protocols can you use to receive e-mail? (Select all that apply.)

    • A.

      IMAP

    • B.

      POP3

    • C.

      PPP

    • D.

      SMTP

    Correct Answer(s)
    A. IMAP
    B. POP3
    Explanation
    You can use either IMAP or POP3 to receive e-mail messages.

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  • 6. 

    What advantage does satellite have over cable for connecting tothe Internet?

    • A.

      Satellite is faster than cable.

    • B.

      Cable degrades in stormy weather; satellite does not.

    • C.

      Satellite requires you to be within 18,000 feet of a central switch.

    • D.

      Cable is limited to areas with cable installed; satellite is not.

    Correct Answer
    D. Cable is limited to areas with cable installed; satellite is not.
    Explanation
    Clearly, satellite cuts you loose from the wires!

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  • 7. 

    What command often enables you to diagnose TCP/IP errors such asconnection problems?

    • A.

      FTP

    • B.

      Ping

    • C.

      POP3

    • D.

      VoIP

    Correct Answer
    B. Ping
    Explanation
    You can often use the ping command to diagnose TCP/IP problems.

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  • 8. 

    At what layer of the OSI seven-layer model do proxy servers operate?

    • A.

      Layer 1—Physical

    • B.

      Layer 2—Data Link

    • C.

      Layer 6—Presentation

    • D.

      Layer 7—Application

    Correct Answer
    D. Layer 7—Application
    Explanation
    Proxy servers operate at Layer 7—the Application layer.

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  • 9. 

    Which of the following programs enable you to access and work on a remotecomputer from your local computer? (Select all that apply.)

    • A.

      FTP

    • B.

      Internet Connection Sharing

    • C.

      Remote Desktop

    • D.

      Telnet

    Correct Answer(s)
    C. Remote Desktop
    D. Telnet
    Explanation
    Both Telnet and Remote Desktop enable you to access and work on a
    remote computer. The latter is just prettier!

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