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Computer and network reference
The following
information is provided as a free informational service on a variety of
Information Technology subjects. Click on the subject heading
below to expand list of subject matter.
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Computing and Networking
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Microsoft
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Cisco
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TCP/IP Networking
Comparison of the OSI and DOD models
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DOD Model |
OSI Model |
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Network Protocols |
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Process / Application |
Application |
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Telnet, FTP, SMTP, FTAM (File Transfer, Access, and Management),
VTP (Virtual Terminal Protocol),CMID (Common Management and
Information Protocol |
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Presentation |
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ASCII, EBCDIC, JPEG, GIF, TIFF, MPEG, WAV |
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Session |
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RPC, ZIP (Zone Information Protocol), SCP (Session Control
Protocol) |
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Host to Host |
Transport |
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TCP, UDP, SPX, NBP (Name Binding Protocol) |
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Internet |
Network |
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IP, ICMP, IGRP, IPv6, GRE, IPX in IP, L2TP, ARP, RARP, Ping,
Tracert, IPX, BGP, OSPF, RIP |
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Network Access |
Datalink |
Logical Link Control (LLC)Layer |
LAN - Ethernet (802.3), Fast Ethernet, Token
Ring (802.5), Wi-Fi (802.11), FDDI |
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WAN -Frame Relay, ATM, LAP, LAPB (Link
Access Procedure, Balanced), SDLC(Synchronous Data Link
Control), PPP, SMDS, SIP |
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Media Access Control (MAC) Layer |
MAC (hardware) addressing |
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Physical |
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Electrical (Copper), Optical (Fiber), Radio (Air), Photonic
(Light, Laser) |
back to top
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Memory Chart |
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Type |
Speed |
Bus Speed |
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DDR |
PC2100 |
266Mhz |
133MHz |
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DDR |
PC2700 |
333MHz |
166MHz |
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DDR |
PC3200 |
400MHz |
200MHz |
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DDR |
PC3500 |
433MHz |
216MHz |
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DDR |
PC3700 |
466MHz |
233MHz |
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DDR |
PC4000 |
500MHz |
250MHz |
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DDR |
PC4200 |
533MHz |
266MHz |
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DDR |
PC4400 |
550MHz |
275MHz |
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DDR |
PC4500 |
566MHz |
283MHz |
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DDR |
PC4800 |
600MHz |
300MHz |
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DDR |
PC5000 |
625MHz |
313MHz |
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DDR2 |
PC2-4200 |
533MHz |
266MHz |
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DDR2 |
PC2-5400 |
667MHz |
333MHz |
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DDR2 |
PC2-6000 |
750MHz |
375MHz |
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DDR2 |
PC2-6400 |
800MHz |
400MHz |
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DDR2 |
PC2-8000 |
1000MHz |
500MHz |
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DDR2 |
PC2-8800 |
1100MHz |
550MHz |
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DDR2 |
PC2-9000 |
1120MHz |
560MHz |
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DDR3 |
PC3-6400 |
800MHz |
400MHz |
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DDR3 |
PC3-8500 |
1066MHz |
533MHz |
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DDR3 |
PC3-10666 |
1333MHz |
667MHz |
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DDR3 |
PC3-12800 |
1600MHz |
800MHz |
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DDR3 |
PC3-14400 |
1800MHz |
900MHz |
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DDR3 |
PC3-16000 |
2000MHz |
1000MHz |
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IEEE 802
Working Groups and Networking Protocols
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Standard |
Name |
Description |
Status |
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802.1 |
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Higher Layer LAN Protocols Working Group |
Active |
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802.2 |
Novell |
Logical Link Control Working Group |
Inactive |
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802.3 |
Ethernet |
Ethernet Working Group |
Active |
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802.4 |
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Token Bus Working Group |
Inactive |
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802.5 |
Token Ring |
Token Ring Working Group |
Inactive |
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802.6 |
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Metropolitan Area Network Working Group |
Disbanded |
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802.7 |
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Broadband TAG |
Disbanded |
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802.8 |
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Fiber Optic TAG |
Disbanded |
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802.9 |
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Isochronous LAN Working Group |
Inactive |
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802.10 |
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Security Working Group |
Inactive |
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802.11 |
Wi-Fi |
Wireless LAN Working Group |
Active |
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802.12 |
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Demand Priority Working Group |
Inactive |
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802.14 |
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Cable Modem Working Group (Temporarily housed off-site) |
Disbanded |
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802.15 |
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Wireless Personal Area Network (WPAN) Working Group |
Active |
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802.16 |
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Broadband Wireless Access Working Group |
Active |
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802.17 |
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Resilient Packet Ring Working Group |
Active |
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802.18 |
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Radio Regulatory TAG |
Active |
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802.19 |
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Coexistence TAG |
Active |
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802.20 |
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Mobile Broadband Wireless Access (MBWA) Working Group |
Active |
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Windows Name
Resolution
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WINS |
NETBIOS |
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Local NetBIOS Name Cache |
Local Host Name |
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WINS Server |
HOSTS Files |
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B-Node Broadcast |
DNS |
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LMHOSTS File |
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back to top
Cisco Router
Configuration Cheat Sheet
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Networking |
IEEE |
Cisco Term |
Frame Type |
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TCP/IP |
802.3 |
arpa |
Ethernet II |
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Novell |
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Netware 3.11 or lower (default) |
802.3 |
novell-ether |
Ethernet 802.3 |
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Netware 3.12 or higher |
802.2 |
sap |
Ethernet 802.2, Token Ring, FDDI 802.2 |
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AppleTalk on TCP/IP |
802.2 |
snap |
Ethernet SNAP, Token Ring SNAP, FDDI SNAP |
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Address Mapping |
TLA |
Known |
Unknown |
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Address Resolution Protocol |
ARP |
IP, Network, Logical, Layer 3 |
MAC, Media Access Control, Hardware, Layer 2 |
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Reverse Address Resolution Protocol |
RARP |
MAC, Layer 2 |
IP, Network, Logical, Layer 3 |
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Routing |
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Static Routing |
ip route [dest net] [mask] [next hop address
(gateway)] [admin distance] [perm] |
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ip route [dest net] [mask] [exit interface]
[admin distance] [perm] |
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Distance Vector |
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Routing Information Protocol |
RIP |
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Interior Gateway Routing Protocol |
IGRP |
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Link State |
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Open Shortest Path First |
OSPF |
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Hybrid (DV and LS) |
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Enhanced Interior Gateway Routing Protocol |
EIGRP |
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Exterior Gateway Protocols |
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Border Gateway Protocol |
BGP |
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Wildcard Masks |
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255.255.255.255 |
any |
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0.0.0.0 |
host |
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Cisco IP Configuration Conventions |
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Network address of all 0s means "this network or segment" |
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Network address of all 1s means "all networks" |
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Node address of all 0s means "this node" |
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Node address of all 1s means "all nodes" |
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Entire IP address set to all 0s is the Cisco default route |
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Entire IP address set to all 1s is the broadcast address for all
nodes on the current network |
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TCP/IP Networking
IP Subnet Calculator
http://www.subnet-calculator.com/
The IP Subnet Mask
Calculator enables Subnet network calculations using network
class, IP address, subnet mask, subnet bits, mask
bits, maximum required IP subnets and maximum required hosts
per subnet.
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TCP IP Networking Guidelines
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