Changes

Ethernet, Cable internet, and Wireless internet ([[WiFi]], [[WiMax]], etc.) use a bus topology that detects collisions and retransmits data afterwards.  Before SATA hard disks, IDE cables allowed up to two hard disk drives (or floppy disk drives) per physical cable using M/S configuration.  In the modern day IDE is usually used only for DVD drives.

Ethernet, Cable internet, and Wireless internet ([[WiFi]], [[WiMax]], etc.) use a bus topology that detects collisions and retransmits data afterwards.  Before SATA hard disks, IDE cables allowed up to two hard disk drives (or floppy disk drives) per physical cable using M/S configuration.  In the modern day IDE is usually used only for DVD drives.

There are security implications for this topology.  Since all nodes on the bus can see the transmissions of all other nodes on the bus, each connection between two nodes must be protected by a security protocol.  The most common form used on the internet is SSH (Secure Sockets), which encrypts the data in a way that only the two nodes can decrypt.  Without a security protocol, any other node on the bus could observe and record any data being transferred.  Software that watches for unencrypted data is called a '''sniffer''' and can be used to steal confidential information including, but not limited to, social security numbers, phone numbers, and credit card numbers.  Any use of the internet in which confidential information is transmitted should be protected by the use of SSH, or another secure protocol.  The HTTPS:// web protocol uses SSH, whereas HTTP:// is inherently insecure.

There are security implications for this topology.  Since all nodes on the bus can see the transmissions of all other nodes on the bus, each connection between two nodes must be protected by a security protocol.  The most common form used on the [[internet]] is SSH (Secure Sockets), which encrypts the data in a way that only the two nodes can decrypt.  Without a security protocol, any other node on the bus could observe and record any data being transferred.  Software that watches for unencrypted data is called a '''sniffer''' and can be used to steal confidential information including, but not limited to, social security numbers, phone numbers, and credit card numbers.  Any use of the internet in which confidential information is transmitted should be protected by the use of SSH, or another secure protocol.  The HTTPS:// web protocol uses SSH, whereas HTTP:// is inherently insecure.

===Ring===

===Ring===