Concepts to know in Network before you work with IEC-61850 protocol

Concepts to know in Network before you work with IEC-61850 protocol:

1. Different IP address - Class B, Class A, ...
2. Different MAC address -
3. What is multicast mac address?
4. What is RSTP ? Rapid Spanning Tree Protocol.
5. Which protocol is used for Client-Server Communication?
6. What is subnet?How is it decided ?
7. What is multimode FO cable vs Single mode FO cable?
8. Which type of cables are to be used for SIE, SEL and GE devices?
9. XML, HTML, SCL ...
10. Ethernet TCP/IP
11. OSI
12. Network Switches
13. How they perform?
14. Client - Server communication

Will post the brief description later on.