The NHS is the National Health Service, which provides healthcare free at the point of access for all UK residents. The NHS owns hospitals and pays for doctors and nurses.
Access points operate primarily at the Data Link layer (Layer 2) of the OSI model, where they facilitate wireless communication between devices on a local area network (LAN). They manage the data frames and handle MAC addressing, allowing devices to connect to the network. Additionally, access points can also interact with the Network layer (Layer 3) for IP addressing and routing functions.
It's a form of broadband internet access that uses the cable television infrastructure.
A service is a program on the computer that provides a function for your software, such at the NetBIOS service that connects windows workgroup machines, or the DHCP Client that acquires a network address for your computer when you connect to the internet. A protocol is a language the computer uses to exchange information. For example, TCP/IP is used to negotiate connection and transfer data over the Internet, and HTTP is a protocol that handles transferring data between WWW servers, and clients.
Ping uses ICMP, and therefore resides at layer 3 (Network layer)
a default gateway is the default access point a computer or device uses to connect to the internet.
You could try at McDonalds' or Subway, they often have free wi-fi for customers.
See "What does the ozone layer do?"
Transport layer
CAN TV stands for Chicago Access Network Television. It's a public, government access and educational cable television service. It is located in Chicago, Illinois.
Sequential data is what uses access. This is used in science.
Layer 4 (Transport)