(Find all correct answers)
a) innodb_buffer_pool_size 8388608 b) innodb_log_buffer_size 1048576 c) join_buffer_size 131072 d) key_buffer_size 8388600 e) read_buffer_size 131072 f) sort_buffer_size 2097144
[ MySQL Architecture (10%) - How MySQL Uses Memory ]
c e f
Those 3 are buffers per thread/connection.
The others are per mysql instance.