redundancy
The question is too vague to answer with any certainty. Are you asking about individual connections, multiple network connections, total number of servers?
An ethernet cable is used in computer and internet connections and is available in different lengths and is also called an Ethernet Cable
Just a normal wired router.
Ethernet and LAN connections are pretty much the same thing. They are local internet connections.
It's an Ethernet port used for network connections.
Acronym for Point-to-Point Protocol over Ethernet. PPPoE relies on two widely accepted standards: PPP and Ethernet. PPPoE is a specification for connecting the users on an Ethernet to the Internet through a common broadband medium, such as a single DSL line, wireless device or cable modem. All the users over the Ethernet share a common connection, so the Ethernet principles supporting multiple users in a LAN combine with the principles of PPP, which apply to serial connections(source: webopedia.com)
Broadband cable and DSL WiFi or ethernet connections
You purchase a router in ether wireless or wired for your PS3 or you can connect wired with an ethernet cable directly between Cable or DSL modem and the back of your PS3. Routers allow you to split your internet connection and provide a connection to multiple devices like to your PC, PS3, Smart TV, and a laptop. Routers can be wired with output ports for ethernet cables or wireless for WiFi connections and those normally include outputs for wired connections. They are installed by plugging a ethernet cable from it's input into your modem's output.
router,bridge
yes.
An Ethernet Hub allows the user to hook up to four ports at one time. The Hub will allow you to connect multiple devices and allow them to act as one.
They can support multiple higher-layer protocols, and Ethernet 802.3 frames cannot.