Identify the gateway for simple Internet connectivity at homes.

Concept

A "gateway" in networking is the entry/exit point that connects one network to another network. For a home, the relevant gateway is whatever connects your private home network to the outside world — the global Internet.

Application

Trace how a home reaches the Internet, step by step:

1. Your devices (phone, laptop) connect to a home router/modem, forming the local home network.

2. That router/modem links to the Internet Service Provider's access network over the broadband/fiber line.

3. The Internet Service Provider then carries your traffic out to the rest of the global Internet.

Therefore the Internet Service Provider is the entity that bridges the home network to the Internet — it is the gateway for home Internet connectivity. (Note: a router is also a gateway device, but it is not one of the choices here; among the given options, the provider that grants access to the Internet is the answer.)

Contrast

• Server — a machine that hosts/serves content (websites, files); it does not grant a home its Internet access.

• LAN — the internal home network that links devices to each other; by itself it has no path to the Internet.

• WAN — a category of large-scale network (the Internet is a WAN); it is a network type, not the access provider you connect through.