Its error detection capabilities, high immunity to external noise signals (present in industrial processes), robustness, capability to solve bus access collisions without any retransmission requirements, distributed control and hot-swapability.
No cables to trip over
Advantages of bus LAN Advantages of bus LAN
A zero-slot LAN is a local-area network (LAN) that uses existing serial and/or parallel communication ports on the computers in the network instead of requiring network interface cards (NICs) that would occupy an expansion slot. Advantages It leads to transmitting between computers over a serial or parallel port, thus freeing up an expansion slot normally used by LAN cards (NICs). Disadvantages Zero-slot LANs are typically slower than LANS that use NICs and are limited to two or three network nodes.
TCP/IP is the most common LAN protocol.
Lan are fast cheap and reliable.
LAN is wired WLAN is wireless
Your question is quiet confusing but if you are asking for the protocol for a computer inside the LAN to be able to communicate through the internet then it is the TCP/IP.
The older protocol for this purpose was BOOTP, but modern addressing LAN schemes today will use DHCP.
Metropolitan Area Network also known as MAN is a composition of several connected Local Area Networks. Its advantages are seamless file sharing over large networks and users can share high-speed internet connection. Its high cost of installation is one of its disadvantages.
wpa2
ATM protocol is a WAN technology
A spanning tree protocol, or STP, is characteristic to a LAN. It provides a loop-free topology for networks within the system.