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44 Cards in this Set

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  • Back
Access Method
A network's method of controlling how nodes access the communications channel.
Active topology
A topology in which each workstation participates in transmitting data
Broadcast Domain
Logically grouped network nodes that can communicate directly via broadcast transmission.
Bus
The single cable connecting all devices in a bus topology
Bus Topology
A topology in which a single cable connects all nodes on a network without intervening connectivity devices.
CSMA/CD
Carrier Sense Multiple Access with Collision Detection
Circuit Switching
A type of switching in which a connection is established between two network nodes before they begin transmitting data. Bandwidth is dedicated
Collapsed backbone
A type of backbone that uses a router or switch as the single central connection point for multiple sub-networks.
collision
In Ethernet networks, the interference of one node's data transmission with the data transmission of another node sharing the same segment.
collision domain
The portion of an Ethernet network in which collisions could occur if two nodes transmit data at the same time.
Explain CSMA/CD
A network method in which each node waits its turn before transmitting data to avoid interfering with other node's transmission. If a node's NIC determines collision it stops
daisy chain
A group of connectivity devices linked together in a serial fashion.
data propagation delay
The length of time data takes to travel from one point on the segment to another point.
distributed backbone
A type of backbone in which a number of connectivity devices are connected to a series of central connectivity devices such as switches, routers.
Enterprise
An entire organization, including local and remote offices, a mixture of computer systems, and a number of departments.
fault tolerance
The capacity for a component or system to continue functioning despite damage or malfunction.
hybrid topology
A physical topology that combines characteristics of more than one simple physical topology.
jamming
A part of CSMA/CD in which upon detecting a collision, a station issues a special 32-bit sequence to indicate to all nodes on an Ehternet segment that its previously transmitted frame has suffered a collision and should be considered faulty.
logical topology
A characteristic of network transmission that reflects the way in which data is transmitted between nodes.
message switching
A type of switching in which a connection is established between two devices in the connection path; one device transfers data to the second device, then breaks the connection. The information is stored and forwarded from the second device after a connection between that device and a third device on the path is established.
MPLS
Multiprotocol label Switching
describe MPLS
A type of switching that enables any one of several ability to use packet switched technologies over traditionally circuit-switched networks.
modal bandwidth
A measure of highest frequency of signal a multimode fiber-optic cable can support over a specific distance.
packet switching
A type of switching in which data is broken into packets before it is transported. In packed switching, packets can travel any path on the network to their destination, because each packet contains a destination address and sequencing information.
padding
the bytes added to the data portion of an Ethernet frame to ensure this field is at least 64 bytes in size.
parallel backbone
A type of backbone that consist of more than one connection from the central router or switch to each network segment.
passive topology
A network topology in which each node passively listens for, then accepts, data direct to it.
PD
Powered Device. On a network using Power over Ethernet, a node that receives power from power sourcing equipment.
physical topology
The physical layout of a network. There are three different physical topology, STAR, RING, BUS
POE
Power Over Ethernet
A method of delivering current to devices using Ethernet connection cables.
preamble
The field in the ethernet frame that signals to the receiving node that data is incomming and indicates when the data flow is about to begin.
PSE
On a network using Power over Ethernet, the device that supplies power to end nodes.
QoS
Quality of Service
The result of specifications for guaranteeing data delivery within a certain period of time after their transmission.
ring topology
A network layout in which each node is connected to the two nearest nodes so that the entire network forms a circle. Data is transmitted uni directionally around the ring.
Serial backbone
A type of backbone that consists of two or more internetworking devices connected to each other by a single cable in a daisy chain.
serial backbone
A type of backbone that consists of two or more internetworking devices connected to each other by a single cable in a daisy chain.
SFD
Start-of-frame delimiter
Describe SFD
A 1-byte field that indicates where the data field begins in an Ethernet frame.
signal bounce
A phenomenon, caused by improper termination on a bus-topology network, in which signals travel endlessly between the two ends of the network, preventing new signals from getting though.
star topology
A physical topology in which every node on the network is connected though a central devices, such as a hub. Any single physical wire on a star network connects only two devices, so a cabling problem will affect only two nodes.
star-wired bus topology
every node on the network is connected though a central devices, such as hub.
star-wired ring topology
A hybrid topology that uses the physical layout of a star and the token-passing data transmission method.
switching
A component of a network's logical topology that manages how packets are filtered and forwarded between nodes on the network
terminator
A resistor that is attached to each end of a bus-topology network and that causes the signal to stop rather than reflect back towards its source.