What is the difference between http1.0 and http1.1 version?

Answer 1

salam

http 1.0 establishes a TCP connection for each packet

http 1.1 uses only one connection for all packets

Answer 2

see here for the key differences between HTTP/1.0 and HTTP/1.1

http://www8.org/w8-papers/5c-protocols/key/key.html

there are 9 major differences compiled.