Covers multi-threaded server design, thread pools, condition variables, atomicity in wait/signal, deadlock prevention, and producer-consumer patterns.
Explains context switching mechanism in xv6: scheduler loop, sched function, context structure, swtch assembly function, and kernel stack management during process switches.
Describes trap handling mechanisms in xv6: system calls, interrupts, program faults, CPU context saving, kernel trap handler functions, and return from trap procedures.
Detailed coverage of TCP/UDP protocols, connection setup, segmentation, sliding window mechanism, reliability, congestion control, and bandwidth delay product calculations.
Explains IP addressing, routing protocols, subnets, routing tables, hierarchical routing, label switching (MPLS), SDN, NAT, VPNs, and debugging tools for both IPv4 and IPv6.