68-XX - Computer science

68Mxx - Computer system organization

	68M01	General
1	68M07	Mathematical problems of computer architecture
1	68M10	Network design and communication [See also 68R10, 90B18]
	68M11	Internet topics [See also 68U35]
4	68M12	Network protocols
	68M14	Distributed systems
1	68M15	Reliability, testing and fault tolerance [See also 94C12]
1	68M20	Performance evaluation; queueing; scheduling [See also 60K25, 90Bxx]
	68M99	None of the above, but in this section