Only if you have a router capable of limiting bandwidth. Consumer models do not have such option, you might want to consider purchasing enterprise class router. Also there are some open source firmware which might have such option, try DD-RWT:
http://www.dd-wrt.com/site/index
Load balancing routers are used when you have multiple items running off the same router. What the load balancing router does, is when 2 or more devices are on the same router, it balances the bandwith so one device is not hogging up all the bandwith.
Yes, if router supports 'bandwidth (or, traffic) shaping' feature.
Router having maximum bandwidth in network. and in network fiberoptic cable having max bandwidth for data travaling
Yes it is true that the grater the bandwith higher the data.
A wired or wireless router.
Bandwith internet wise? Knowing your bandwith lets you know how much network traffic you can support.
check connections are secure. restart router.
Yes it does
The signal strengh of routers is mandated and limited by the FCC. Additional attennas are recommended for increased range with any router.
Since Facebook uses a limited range of IP addresses, blocking those addresses on the router will effectively deny access to Facebook.
Bandwith
External access through the Internet.