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