# What to revise before the paper

Subject: Computer Networks

Exam: M2

Reader: https://deep-learning-study-room.vercel.app/cn/#m2/revision/revision/order

Canonical: https://deep-learning-study-room.vercel.app/read/cn/m2/revision/revision--order/

M2 · use after the lessons and worked examples

Revise the methods in this sequence; keep every answer tied to its question and units.

1. ALOHA: identify Pure/Slotted → L/R → λT → exponential → S → requested rate units.
2. CSMA: listening does not eliminate propagation-window collisions. CD detects; CA reduces risk.
3. Subnet: prefix → host bits → mask → changing-octet block → network/broadcast → usable hosts.
4. Allocation: addresses or hosts? Equal subnets or VLSM? Largest first, aligned start, no overlap.
5. IPv6: count visible groups → insert to reach eight → pad. Header is 40 bytes; payload excludes those 40.
6. Routing: direction and weights → select Dijkstra or Bellman–Ford → record updates → recover path.
7. Theory: switching comparison, ARP/RARP/DHCP, RIP, OSPF and five OSPF packets.

**Yaad rakho:** Numerical mein units, prefix, arrow aur requested quantity pehle circle karo.