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153 Cards in this Set
- Front
- Back
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DARPA
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Defense Advanced Research Projects Agency
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ARPANET
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Advanced Research Projects Agency Network
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FTP
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File Transfer Protocol
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LAN
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Local Area Network
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MAC
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Media Access Control
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OSI
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Open Systems Interconnect
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NIC
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Network Interface Card
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OSI 7-layer Model
(Name the Seven Layers) |
7. Application
6. Presentation 5. Session 4. Transport 3. Network 2. Data Link 1. Physical |
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NOS
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Network Operating System
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UTP
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Unshielded Twisted Pair
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IEEE
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Institute of Electrical and Electronics Engineers
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OUI
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Organizationally Unique Identifier
(First half of 48 bit MAC addresses) |
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CRC
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Cyclic Redundancy Check
(usually only 4 bytes long) |
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LLC
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Logical Link Control
(Puts data into frames and calculates the CRC) |
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TCP
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Transmission Control Protocol
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IP
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Internet Protocol
(assigns unique 4 dotted octet identifier) |
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DHCP
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Dynamic Host Configuration Protocol
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VPN
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Virtual Private Network
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ISO
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International Organization for Standardization
(ISO is derived from the Latin isos for equal) |
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HTTP
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HyperText Transfer Protocol
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API
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Application Program Interface
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ASCII
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American Standard Code for Information Interchange
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Coax
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Coaxial Cable
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EMI
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Electro-magnetic Interference
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RG-8
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coaxial cable used in Thicknet
(50 ohm resistance) |
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RG-62
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coaxial cable, rarely installed
(75 ohm resistance) |
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RG-58
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coaxial cable for ThinNet. Most common kind
(50 ohm resistance) |
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STP
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Shielded Twisted Pair
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CAT rating
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A category rating for cables
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MHz
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Megahertz
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MLT-3
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a form of bandwidth-efficienct encoding scheme
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CAT-1
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Analog phone line
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CAT-2
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4MHz or 4 Mbps bandwidth
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CAT-3
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16MHz or 16 Mbps bandwidth
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CAT-4
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20MHz or 20 Mbps bandwidth
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CAT-5
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100MHz or 100 Mbps bandwidth
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CAT-5e
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100MHz or 1000 Mbps bandwidth
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CAT-6
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200-250 MHz or 10,000 Mbps bandwidth
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Mbps
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Megabits per second
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IEEE 802.3
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CSMA/CD or Ethernet standard
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IEEE 802.5
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Token ring standard
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IEEE 802.11
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Wireless networking standard
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IEEE 802.1x
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Port-based access control
(Wireless security standards) |
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IEEE 802.2
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LLC or Logical Link Control
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DEC
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Digital Equipment Corporation
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DIX
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Digital-Intel-Xerox standard
(an early version of the ethernet standard) |
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10Base5
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Thick Ethernet
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10Base2
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Thin Ethernet
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FCS
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Frame Check Sequence
(Ethernet version of CRC- Cyclic Redundancy Check) |
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CSMA/CD
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Carrier Sense, Multiple Access/Collision Detection
(How ethernet nodes share a bus) |
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AUI Connector
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15-pin female connector found on 10Base5 NIC's for connecting to a transceiver
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BNC connector
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Bayonet Nut Connector (or Coupling)
A connector for coaxial cables |
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10BaseT
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10 Mbps Baseband signal over Twisted Pair media
(Uses star topology) |
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100BaseT
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100 Mbps Baseband signal over Twisted Pair media
(Uses star topology) |
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1000BaseT
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1000 Mbps Baseband signal over Twisted Pair media
(Uses star topology) |
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RJ-45
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Connector for twisted pair cable, has 8 pins
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TIA/EIA
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Telecommunications Industry Association/Electronics Industries Alliance
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TIA/EIA 568A
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A color code standard for crimping four pair UTP for 10BaseT networks
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TIA/EIA 568B
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A color code standard for crimping four pair UTP for 10BaseT networks
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RJ-11
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Connector for telephones. 4 pins for two pairs of wires
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10BaseFL
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10 Mbps Baseband signal over fiber lines
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SC connector
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Connector for fiber that is square in shape. Less common than ST.
(SC = "square") |
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ST connector
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Connector for for fiver that is round with a locking mechanism. Most common
(ST = "screw top") |
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5-4-3 Rule
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5 segments
4 repeaters 3 populated segments No two nodes may be separated by more than any of these |
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100BaseTX
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A variation of 100BaseT that only utilizes two pairs of wires but requires CAT5 or better quality cable
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100BastT4
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A variation of 100BaseT that utilizes all four pairs but can run on CAT3 (voice grade) cable
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100BaseVG
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Also known as 100BaseVGAnyLan can run on CAT3 grade cable but does not conform to Ethernet standards
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100BaseFX
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100 Mbps Baseband signal over fiber
(can go 400 meters) |
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IEEE 802.3z
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Defines a standard for Gigabit ethernet known as 1000BaseX.
Covers: 1000BaseCX 1000BaseSX 1000BaseLX |
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IEEE 802.3ab
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Defines a single standard for Gigabit ethernet over UTP called:
1000BaseT |
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1000BaseCX
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Uses a unique shielded twinaxial cable.
Falls under IEEE 802.3z |
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1000BaseSX
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Uses multimode fiber and exclusively uses ST connectors.
Falls under IEEE 802.3z |
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1000BaseLX
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Uses single mode fiber and lasers to create ethernet over long distances (5 KM!)
Falls under IEEE 802.3z |
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SFF connector
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Small Form Factor connectors for fiber
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MTRJ connector
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Mechanically Transferable Registered Jack. The first small form factor connector for fiber networking. One of two popular SFF connectors
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LC Connector
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Local Connector. A small form factor connector for fiber networking. The most popular of two SFF connector styles
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Gbps
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Gigabits per second
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10GbE
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10 Gigabit Ethernet
Runs exclusively on full duplex fiber and accounts for 7 different kinds of fiber media |
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WAN
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Wide Area Network
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MAN
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Metropolitan Area Network
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10GBaseSR
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10 Gigabit Baseband signal over short wavelength multimode fiber.
Designed for typical ethernet |
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10GBaseSW
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10 Gigabit Baseband signal over short wavelength multimode fiber.
Designed for connecting to SONET |
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10GBaseLR
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10 Gigabit Baseband signal over long wavelenght single mode fiber.
Designed for typical ethernet. MOST POPULAR 10GbE media type! |
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10GBaseLW
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10 Gigabit Baseband signal over long wavelenght single mode fiber.
Designed for connecting to SONET. |
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10GBaseLX4
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Unique version of 10GbE that uses 4 different wavelengths of light over single or multimode fiber. Not widely supported.
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10GBaseER
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10 Gigabit Baseband signal over EXTRA long wavelength single mode fiber.
Designed for typical Ethernet |
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10GBaseEW
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10 Gigabit Baseband signal over EXTRA long wavelength single mode fiber.
Designed for connecting to SONET |
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MSA
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MultiSource Agreements- a modular transceiver for connecting 10GbE equipment to different kinds of fiber media
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MAU or MSAU
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Multistation Access Unit
(a hub for token ring networks) |
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IDC/UDC Connector
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IBM-type Data Connector/Universal Data Connector
Also called a Type 1 connector (hermaphroditic cable connector for Token Ring over STP) |
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R/I and R/O
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Ring In and Ring Out
Ports for connecting MAU's together in a ring |
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IEEE 802.5t
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Standard for fast token ring
running at 100 Mbps or faster |
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HSTR
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High Speed Token Ring
100 Mbps or faster |
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ARCnet
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Attached Resource Computer Network
Uses RG-62 cabling and token-passing hubs |
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FDDI
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Fiber Distributed Data Interface
Uses two token-passing rings at 100Mbps each for a total of 200Mbps. |
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ANSI
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American National Standards Institute
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CDDI
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Copper Distributed Data Interface
Uses two token-passing rings at 100Mbps each for a total of 200Mbps. Uses Cat 5 UTP |
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ATM
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Asynchronous Transfer Mode
155Mbps over fiber or Cat 5 Fixed length frames on point to point connections Popular for WAN's |
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NEC
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National Electrical Code
Developed cabling fire ratings like "PVC" and "Plenum" |
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PVC
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Polyvinyl Chloride
Rating type for cabling with little or no fire protection. Very cheap but gives off toxic fumes when burned |
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UPS
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Uninterruptible Power Supply
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EIA/TIA 606
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Standard for labeling and documentation of patch panels, cables and outlets
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"U" as in "a 44U rack"
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Stands for "Unit" as a height measurment for equipment racks
1U = 1.75" |
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TDR tester
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Time Domain Reflectometer
Medium-priced cable tester can tell you where the break in continuity occurs |
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EIA/TIA 569
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Standards for cable installation, pathways and equipment rooms
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PnP
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Plug 'n Play
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PCI
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Peripheral Component Interconnect
Fast, 32-bit, self-configuring expansion slots |
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PCI-X
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Faster version of PCI favored for Gigabit cards
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LED
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Light-Emitting Diode
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Wi-Fi
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Wireless Fidelity
A dominant technology in the IEEE 802.11 wireless ethernet standard |
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HomeRF
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Home Radio Frequency
A dominant technology in the IEEE 802.11 wireless ethernet standard |
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PDA
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Personal Digital Assistant
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WAP
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Wireless Access Point
Connects wireless network nodes to wireless or wired networks. |
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AP
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Access Point
A further abreviation of WAP |
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IBSS
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Independent Basic Service Set
A unit of organization A wireless workgroup Wireless devices communicating in ad-hoc (p-to-p) mode create an IBSS |
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ICS
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Internet Connection Sharing
Allows peers to connect to the internet through one machine's connection |
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BSS
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Basic Service Set
A single WAP servicing a given area |
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EBSS
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Extended Basic Service Set
Multiple WAPS servicing a given area Also Shortened to ESS by some |
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ESS
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Extended Service Set
A shortened version of EBSS where some have dropped the "basic" |
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SSID
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Service Set Identification
Sometimes called a "network name" A 32 bit identification string inserted into every packet processed by a WAP |
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WEP
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Wireless Equivalency Privacy
Encryption standard for wireless Relatively weak: static and shared keys Only layers 1 and 2 |
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WPA
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Wi-Fi Protected Access
The stronger encryption standard for wireless but harder to configure |
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EAP
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Extensible Authentication Protocol
A standard for authentication specified in IEEE 802.1x Utilized in WPA |
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EAPOL
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Extensible Authentication Protocol Over LAN
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PEAP
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Protected Extensible Authentication Protocol
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EAP-TLS
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Extensible Authentication Protocal-Transport Level Security
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FCC
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Federal Communications Commission
Government body that allocates air-wave bandwidth for specific uses |
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ISM frequencies
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Industrial, Scientific and Medical
FCC allocated portions of the 2.4GHz and 5.8GHz band for use by ISM equipment in 1989 |
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U-NII
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Unlicensed National Information Infrastructure
The FCC allocated three 100MHz freq bands to this in 1997: 5.15-5.25GHz 5.25-5.35GHz 5.725-5.825GHz |
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CSMA/CA
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Carrier Sense, Multiple Access/Collision Avoidance
Utilizes Distributed Coordination Function (DCF) to avoid collisions rather than allow and detect them |
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IFS
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Interframe Space
A period of silence tacked on to the waiting period between resend attempts |
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DCF
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Distributed Coordination Function
A method specified in IEEE 802.11 for collision avoidance. Specifies additional wait time past IFS for all nodes Requires receiving nodes to send ACK for all packets process |
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PCF
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Point Coordination Function
A method of collision avoidance specified under IEEE 802.11. Not implemented |
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ACK
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Acknowledgement
A packet sent to confirm receipt |
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RTS/CTS
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Request to Send/Clear to Send
Another collision avoidance method under IEEE 802.11 Introduces significant overhead Only advisable on high collision networks |
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DSSS
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Direct-sequence Spread Spectrum
Sends data out on different frequencies at the same time Used by all 802.11 wireless standards except HomeRF IEEE 802.11 |
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FHSS
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Frequency-hopping Spread Spectrum
Sends data out on one frequency at a time, constantly shifting (hopping) frequencies Only used by HomeRF IEEE 802.11 |
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SWAP
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Shared Wireless Access Protocol
Used in HomeRF networks Combined standards of 802.11a, 802.11b, 802.11g and hybridized technologies |
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WECA
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Wireless Ethernet Compatibility Alliance
Now called the Wi-Fi Alliance Certify wireless devices for standard compatibility |
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IEEE 802.11a
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Came after 802.11b
Only one on the 5GHz band Capable of 54Mbps but limited to 150 ft range |
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IEEE 802.11b
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Most popular standard
Broadcasts on the 2.4GHz band Capable of 11Mbps and 300ft range under idea conditions More interference due to crowding, however |
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IEEE 802.11g
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Newest standard
Backward compatible with 802.11b Capable of 54Mbps and 300ft range |
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IEEE 802.11
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The original wireless standard
Capable of 2Mbps and 150ft range |
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IEEE 802.16
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Called WiMax
Speed is about the same as 802.11b but claims a range of tens of miles (30 miles max?) |
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DECT
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Digital Enhanced Cordless Telecommunications standard
This combined with 802.11 ethernet standards comine to create the SWAP protocal used by HomeRF |
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NWID
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Network ID
Used in HomeRF instead of SSID Somewhat more secure |
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IrDA protocol
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Infrared Data Association protocol
Enables communication between infrared devices |
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PAN
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Personal Area Network
Small wireless network connecting PC's with peripheral devices (Bluetooth) |
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SCO
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Synchronous Connection-Oriented
Bluetooth transfer type Ensures all data is transmitted but slow Good for file tranfers |
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ACL
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Asynchronous Connectionless
Bluetooth transfer type Faster but doesn't ensure all data transfer Good for streaming media |
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PPTP
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Point to Point Tunneling Protocol
(encrypted connection) |
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SSL
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Secure Sockets Layer
(encrypted connection) |
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APIPA
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Automatic Private IP Adressing
Automatically selects a class B IP address if not connected to DHCP server or statically assigned |
