Vocabulary List N + O
| NAK | NAT | NBP | neighboring routers | NetBEUI | NetBIOS | NetView | NetWare | network address | Network layer |
| NFS | NHRP | NHS | NIC | NLSP | NMP | node address | nondesignated port | non-stub area | NRZ |
| NRZI | NT1 | NT2 | NVRAM | OC | octet | 100BaseT | 100BaseTX | ones density | OSI |
| OSI reference model | OSPF | OUI | out-of-band management | out-of-band signaling |
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