3 lans with wireless connections o wireless nic wnic

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
the other name for IEEE 802.3 LANs with Wireless Connections o Wireless NIC (WNIC) – devices that can be cards that slide into an expansion slot or, more frequently, built-in devices o IEEE 802.11g – the most popular wireless protocol What Are the Alternatives for a WAN? o WAN – wide area network Connecting the Personal Computer to an ISP: Modems o All of these alternatives require that the digital data in the computer be converted to an analog, or wavy, signal. A device called a modem, or modulator/demodulator, performs this conversion. o Dial-up modem – performs the conversion between analog and digital in such a way that the signal can be carried on a regular telephone line. o Point-to-Point Protocol (PPP) – the way in which messages are packaged and handled between your modem and the ISP are governed o DSL modem – operate on the same lines as voice telephones and dial-up modems, but they operate so that their signals do not interfere with voice telephone service. Provide much faster data transmission speeds than dial-up modems. o DSL – digital subscriber line o Cable modem – provide high-speed data transmission using cable television lines. Networks of Leased Lines
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
o A WAN that connects computers located at different geographically distributed company sites. The lines that connect these sites are leased from telecommunications companies that are licensed to provide them.
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern