Working at a Small-to-Medium Business or ISP CCNA ... - SCTE
Working at a Small-to-Medium Business or ISP CCNA ... - SCTE
Working at a Small-to-Medium Business or ISP CCNA ... - SCTE
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744 netw<strong>or</strong>k management system <strong>to</strong>olsnetw<strong>or</strong>k management system <strong>to</strong>ols, 292netw<strong>or</strong>k naming systemsDNS, 218-219domain name servers, 220implementing via <strong>ISP</strong>s, 225implementing via local DNS servers, 226name resolution, 221-225resolvers, 220-221resource rec<strong>or</strong>ds, 220TCP/IP HOSTS file, 218-219netw<strong>or</strong>k prefix, 79netw<strong>or</strong>k supp<strong>or</strong>t services, 14netw<strong>or</strong>k <strong>to</strong>pologieslogical, 291physical, 290netw<strong>or</strong>k upgrades, planning, 56-57NOC (netw<strong>or</strong>k oper<strong>at</strong>ions center), 14NVRAM (non-vol<strong>at</strong>ile random access mem<strong>or</strong>y), 114Oopen authentic<strong>at</strong>ion, 257oper<strong>at</strong>ing systemsp<strong>at</strong>ching, 244version, displaying, 299optical media, 270OSI model, 24, 286as troubleshooting <strong>to</strong>ol, 25, 29-30bot<strong>to</strong>m-up approach, 30-34<strong>to</strong>p-down approach, 30c<strong>or</strong>responding TCP/IP model layers, 286d<strong>at</strong>a link layer, troubleshooting, 295-298decapsul<strong>at</strong>ion, 29encapsul<strong>at</strong>ion, 27encoding, 27layers of, 25-26lower layers, 288netw<strong>or</strong>k layer, 310-311routing, troubleshooting, 323-330troubleshooting, 312physical layer, troubleshooting, 295-298transp<strong>or</strong>t layer, troubleshooting, 331-332upper layers, 288troubleshooting, 332-336OSPF (Open Sh<strong>or</strong>test P<strong>at</strong>h First), 185-187out-of-band management, 262Cisco ISR, 117outside global address, 95outside local address, 95outsourcing, 21overlapping subnets, troubleshooting, 314-315Ppacket-switched WAN connections, 152packet trailers, 28passive d<strong>at</strong>a connections, 230passw<strong>or</strong>ds, 243PAT (P<strong>or</strong>t Address Transl<strong>at</strong>ion), 99-102p<strong>at</strong>ches, 244permissions, assigning, 245physical environment, documenting, 57physical layer, 25cables, troubleshooting, 301-303OSI model, 287-288troubleshooting, 295-298physical <strong>to</strong>pologies, 52, 290PI (Pro<strong>to</strong>col Interpreter) function of FTP, 229ping command, 9planningf<strong>or</strong> exam prepar<strong>at</strong>ion, 341-342netw<strong>or</strong>k upgrades, 56-57IP addressing, 68point-<strong>to</strong>-point WAN connections, 151POP (point of presence), 7POP3 (Post Office Pro<strong>to</strong>col version 3), 233p<strong>or</strong>t filtering, 250p<strong>or</strong>table netw<strong>or</strong>k analyzers, 295p<strong>or</strong>ts, 215duplex settings, displaying, 305POST (power-on self test), 114failures, troubleshooting, 301powering up Cisco C<strong>at</strong>alyst 2960 switches, 159PPP encapsul<strong>at</strong>ion, configuring, 154-155practicing test taking, 342-344preparing f<strong>or</strong> CCENT exam, 336-340commitment, 341cre<strong>at</strong>ing a plan, 341-342factual knowledge, imp<strong>or</strong>tance of, 338practicing test taking, 342-344present<strong>at</strong>ion layer, 25, 286primary DNS zones, 225privileged EXEC mode, 128problem-solving procedures, 29-30pro<strong>to</strong>col analyzers, 293pro<strong>to</strong>col stack, 26proxy servers, 229PSKs (preshared keys), 257purchasing equipment, 61-62Q-Rreachability, 196recalling commands, 131-132recovering Cisco IOS images, 276-277redundancy, 208reliability, 67of <strong>ISP</strong> services, 207required devices f<strong>or</strong> <strong>ISP</strong> connectivity, 13
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