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153 Cards in this Set

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