there can be many devices connected between a router and a switch
the most popular items are
firewall , ips , ids
there are other devices such as network management tools
yes it can easily be connected to any wireless router.
What is diffrent between router and switch?
It does not require any particular switch or router you can use either.
If a switch is connected to a router then the MAC address of the router is known to the switch through that port. A host takes advantage of this by using the default gateway address (the address of the router) which the switch "knows" by its lookup table. Therefore, the switch can learn the address automatically and no configuration is necessary.
we use straight cable to connect between the router and switch as router and switch are different devices.
It is connected by a network cable, switch and a router.
A router will typically support between 4 and 8 ports. For additional ports, a standard Ethernet switch can be connected to one of the ports.
Like a switch, a router places nodes that are connected to it in separate collision domains.
They're probably set up to use DHCP to obtain an IP address from the router. It's likely you don't have a working connection to your router. Make sure your switch is connected to the router, and not just the other computers.
The number of devices you can link to a router will depend on the specific router,typically 4 devices can be connected.
If the computer network is to have internet, then you would need a modem connected via a phone line or cable connection. Then the modem is usually connected to a Router, that in turn connects to a "Switch". All the computers then connect to the Switch through ethernet cable (cat5 or cat6). One computer is often designated as the "Server", a central point to hold the programs and data for the other computers (clients) to use. INTERNET --> MODEM--> ROUTER --> SWITCH --> SERVER --> COMPUTERS (In some cases, the router can also serve as the switch as well).
Nowadays virtually any wireless router. When you get a router you usually have about 4 lan ports (switch) and wireless router in the same box.