Most of modern access points can serve as a switch too. So the answer is yes, if your access point has lan ports.
No, but you are going to need a wireless router, also known as an access point, between the laptop and the cable modem.
WAP, or Wireless Access Point
Access Point (AP)
allows a single computer to connect to a LAN allows a single computer to connect to a LAN
With a LAN cable and a switch
It is when you connect 2 computers with a LAN cable
Crossover Cable (T568A on one end, T568B on the other)
It's possible but doesnt' worth it, just buy a lan cable.
If you want to connect two routers with a wire you have use a straight lan cable NOT crossover cable.
Through cross lan cabel we connect pc to pc.
Lan Card provides a port for a network cable to connect the pc to a network.. LAN : Local area network or Ethernet Card and Network Card
Buy a lan router, they can be used with lan cable or wireless to connect all your computers through a network. If there are only two computers that you wish to connect then you only need on lan cable which you connect in the back of each of those two computers to create a network.