Switching

I recently just was thrown onto managing a smaller network in the building I live in. Currently, there is a Cisco 1700 series router that does nat, and a dhcp server that is plugged into one of the 3 switches, handing out internal ips and dns servers...

Hi,Q1) When doing network design on paper (without any tools), how to determine that the bandwidth planned is enough?Given a network with the following applications- VoIP of 1Mbps to multipoint (total 5 sites)- video conferenc of 3Mbps to multipoint ...