1. NOP: NO Operation.
  2. NOS: Network Operating System.
  3. NT (Windows): New Technology.
  4. NTFS: NT File System.
  5. NFS: Network File System.
  6. NIC: Network Interface Controller.
  7. NIO: New I/O.
  8. NMI: Non-Maskable Interrupt.
  9. NNTP: Network News Transfer Protocol.
  10. NTP: Network Time Protocol.
  11. NVRAM: Non-Volatile Random Access Memory.