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  2. Troubleshoot a broadband internet connection - AOL Help

    help.aol.com/articles/troubleshooting-a...

    Check if you can visit other sites with a different browser - If you can go to another site, the problem may be associated the browser you're using. If you don't have another browser, download a supported one for free. 2. Check the physical connection - A loose cable or cord can often be the cause of a connection problem. Make sure everything ...

  3. Carrier-sense multiple access with collision detection

    en.wikipedia.org/wiki/Carrier-sense_multiple...

    This effect was first seen in networks using CSMA/CD on Ethernet. Because of this effect, the most data-intense connection dominates the multiple-access wireless channel. [12] This happens in Ethernet links because of the way nodes "back off" from the link and attempt to re-access it.

  4. 10BASE2 - Wikipedia

    en.wikipedia.org/wiki/10BASE2

    The maximum practical number of nodes that can be connected to a 10BASE2 segment is limited to 30 [4] with a minimum distance of 0.5 metres (20 in) between devices. [5] In a 10BASE2 network, each stretch of cable is connected to the transceiver (which is usually built into the network adaptor) using a BNC T-connector , [ a ] with one stretch ...

  5. Autonegotiation - Wikipedia

    en.wikipedia.org/wiki/Autonegotiation

    These problems led many network administrators to manually set the speed and duplex mode of each network interface. However, the use of manual configurations may lead to duplex mismatches. These can be difficult to diagnose because the network is nominally working. Simple network testing utilities such as ping may report a valid connection.

  6. Troubleshoot a dial-up connection - AOL Help

    help.aol.com/articles/troubleshooting-a-dial-up...

    An active internet connection is required to be able to access all the best that America Online® offers. If you're using dial-up internet and can't connect, try the following troubleshooting steps: Check the dial tone - If you DO have one, it's likely the problem has something to do with your computer. If you DON'T, it's likely the problem has ...

  7. Fix problems reading or receiving AOL Mail

    help.aol.com/articles/fix-problems-reading-or...

    Disable Protected Mode in Internet Explorer. Protected mode is enable by default and may interfere with AOL Mail. If you're continuing to have trouble accessing mail, turn Protected Mode off: 1. Click Tools. 2. Click Internet Options. 3. Click the Security tab. 4. Deselect "Enable Protected Mode." 5. Restart Internet Explorer and sign in to AOL ...

  8. Duplex mismatch - Wikipedia

    en.wikipedia.org/wiki/Duplex_mismatch

    Communication is possible over a connection in spite of a duplex mismatch. Single packets are sent and acknowledged without problems. As a result, a simple ping command fails to detect a duplex mismatch because single packets and their resulting acknowledgments at 1-second intervals do not cause any problem on the network. A terminal session ...

  9. IEEE 802 - Wikipedia

    en.wikipedia.org/wiki/IEEE_802

    Everything above LLC is explicitly out of scope for IEEE 802 (as "upper layer protocols", presumed to be parts of equally non-OSI Internet reference model). The most widely used standards are for Ethernet , Bridging and Virtual Bridged LANs, Wireless LAN , Wireless PAN , Wireless MAN , Wireless Coexistence , Media Independent Handover Services ...