Key Words Network +

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  • Created by: xEvvvvan
  • Created on: 25-05-17 15:16
CSMA/CD
Carrier-Sense Multiple Access /w Collision Detection. A media access control method that helps devices share the bandwidth evenly without having two devices transmit at the same time on the network medium.
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TCP
Transmission Control Protocol. TCP is one of the main protocols of the Internet protocol suite
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UDP
User Datagram Protocol. UDP is a OSI transport layer protocol for client/server network applications based on Internet Protocol (IP). To achieve higher performance, the protocol allows individual packets to be dropped (with no retries) and UDP packet
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CSMA/CA
Carrier-Sense Multiple Access w/ Collision Avoidance. CSMA/CA is a protocol for carrier transmission in 802.11 networks. In CSMA/CA, as soon as a node receives a packet that is to be sent, it checks to be sure the channel is clear.
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CRC
Cyclic Redundancy Check. A method of checking for errors in data that has been transmitted on a network. A sending device applies a 16- or 32-bit polynomial to a block of data The receiving end applies the same polynomial to the data and compares.
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OUI
Organisationally Unique Identifier. Assigned by the IEEE to organisation - composed of 24 bits (3 bytes).
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IEEE
Institute of Electrical and Electronics Engineers. The world's largest association of technical professionals with more than 420,000 members in over 160 countries around the world.
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I/G
Individual/Group. Used to signify if the destination MAC Address is a unicast or multicast layer 2 address.
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MAC
Media Access Control. MAC layer is the lower sublayer of the data link layer. The MAC layer is responsible for moving data packets to and from one Network Interface Card (NIC) to another across a shared channel.
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L/G
Local/Global. Used to tell if the MAC address is the BIA or one that has been changed locally.
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BIA
Burned-In-Address
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FCS
Frame Check Sequence. The extra error-detecting code added to a frame in a communications protocol. It is a field that is at the end of the frame and used to store the CRC.
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DA
Destination Address
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RJ
Registered Jack
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UTP
Unshielded Twisted-Pair
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dB
Decibels
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AUI
Attachment Unit Interface. A physical and logical interface defined in the original IEEE 802.3 standard for 10BASE5 Ethernet.
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BNC
British Naval Connector
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MII
Media Independent Interface. An interface created by the 802.3u specifications that provides 100Mbps throughput. MII uses a nibble (4 bits).
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GMII
Gigabit Media Independent Interface. Used by Gigabit Ethernet and transmits 8 bits at a time.
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MTU
Maximum Transmission Unit. MTU is the largest size packet or frame, specified in octets (eight-bit bytes), that can be sent in a packet or frame based network such as the Internet.
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PLC
Power Line Communication. A communication method that uses electrical wiring to simultaneously carry both data and electric power. Also known as PDSL and PLN.
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Inherent Attenuation
The loss of signal strength as it travels the length of a cable and is measured in decibels (dB).
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Ethernet Frames
Frames are used at the Data Link layer to encapsulate packets handed down from the Network Layer.
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Ethernet Stations
Used to pass data frames between eachother using a group of bits known as MAC frame format that provides error detection from a CRC.
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10Base2
Known as Thinnet. Can support up to 30 workstations on a single segment. Used 10Bmps baseband technology and coax up to 185 meters in length. 10Base2 Ethernet cards use BNC.
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10BaseT
This is 10Mbps using Cat 3 UTP wiring. Each device must coonnect to a hub or switch and you can only have one host per segment or wire. Uses RJ-35 connector with a physical star topology and a logical bus.
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10BaseTX
Known as Fast Ethernet. Uses Cat 5/5e/6 and UTP two-pair wiring. Allows for one user per segment up to 100 meters long and uses RJ-45 connector with a physical star topology and a logical bus.
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100BaseFX
Uses 62.5/125-micron multimode fiber cabling up to 412 meters long and point to point topology. Uses ST and SC connectors.
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1000BaseT
Uses Cat 5, four pair UTP wiring, and up to 100 meters long.
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Collision Domain
An Ethernet term that refers to a particular network scenario where one device sends a packet out on a network segment and therby forces every other device on that same physical network segment to pay attention to it. (See Collision Event)
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10GBaseSR
10 Gigabit Ethernet that uses short-wavelength lasers at 850 nm overmultimode fiber.
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Collision Event
A situation where each devices digital signals interferes with another on the wire. It has a dramatically negative effect on network performance.
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Broadcast Domain
Refers to the set of all devices on a network segment that hear all the broadcasts sent on that segment
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Broadband
Allows us to have both our analog voice and digital data carried on the same network cable or physical medium. Broadband allows us to send multiple frequencies of different signals down the same wire at the same time.
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Baseband
What all LANS use. All the bandwidth of the physical media is used by only one signal. Example - Ethernet uses only one digital signal at a time and requires all available bandwidth.
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Bit Rates
Bit Rate is the measurement of the number of data in bits transmitted in one second in either digital or analog signal.
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Baud Rate
Baud is a term of measurement. One baud is one electronic state change per second.
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Full Duplex
Refers to the transmission of data in two directions simultaneously. It uses two pairs of wires at the same time with a point to point connection which results in faster transfer speeds and collision prevention too.
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Half Duplex
Uses only one wire pair with a digital signal either transmitting or receiving.
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Other cards in this set

Card 2

Front

Transmission Control Protocol. TCP is one of the main protocols of the Internet protocol suite

Back

TCP

Card 3

Front

User Datagram Protocol. UDP is a OSI transport layer protocol for client/server network applications based on Internet Protocol (IP). To achieve higher performance, the protocol allows individual packets to be dropped (with no retries) and UDP packet

Back

Preview of the back of card 3

Card 4

Front

Carrier-Sense Multiple Access w/ Collision Avoidance. CSMA/CA is a protocol for carrier transmission in 802.11 networks. In CSMA/CA, as soon as a node receives a packet that is to be sent, it checks to be sure the channel is clear.

Back

Preview of the back of card 4

Card 5

Front

Cyclic Redundancy Check. A method of checking for errors in data that has been transmitted on a network. A sending device applies a 16- or 32-bit polynomial to a block of data The receiving end applies the same polynomial to the data and compares.

Back

Preview of the back of card 5
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