Download Understanding the Basics of Data Communication: Terms and Definitions and more Quizzes Data Communication Systems and Computer Networks in PDF only on Docsity!
Topology
where you went in and came out.Documentation is key. TERM 2
Simplex
DEFINITION 2 refers to communication that occurs in one direction only. TERM 3
Half Duplex
DEFINITION 3 A duplex communication system is a point-to-point system composed of two connected parties or devices that can communicate with one another in both directions simultaneously. TERM 4
Full Duplex
DEFINITION 4 A duplex communication system is a point-to-point system composed of two connected parties or devices that can communicate with one another in both directions simultaneously. TERM 5
Layer 2
DEFINITION 5 -Frames-Go from bits to frames-make sure data goes through error free-Flow Control-Access Control
Flow Control
In data communications, flow control is the process of managing the pacing of data transmission between two nodes to prevent a fast sender from outrunning a slow receiver. It provides a mechanism for the receiver to control the transmission speed, so that the receiving node is not overwhelmed with data from transmitting node. Flow control should be distinguished from congestion control, which is used for controlling the flow of data when congestion has actually occurred. Flow control mechanisms can be classified by whether or not the receiving node sends feedback to the sending node. HAPPENS IN LAYER 2 TERM 7
Access Control
DEFINITION 7 Access control refers to exerting control over who can interact with a resource. HAPPENS IN LAYER 2 TERM 8
Layer 3
DEFINITION 8 The network layer is layer 3 of the seven-layer OSI model of computer networking.-Has logical addressing-Routing-The transport layer is responsible for process to process.-IP is unreliable-ARP-RARP-IGMP TERM 9
ARP
DEFINITION 9 Figures out where you're going. TERM 10
RARP
DEFINITION 10 The Reverse Address Resolution Protocol is an obsolete computer networking protocol used by a host computer to request its Internet Protocol (IPv4) address from an administrative host, when it has available its Link Layer or hardware address, such as a MAC address.
Layer 4
In computer networking, the transport layer or layer 4 provides end-to-end communication services for applications within a layered architecture of network components and protocols. TERM 17
Layer 5
DEFINITION 17 The session layer is layer 5 of the seven-layer OSI model of computer networking. TERM 18
Layer 6
DEFINITION 18 The presentation layer is layer 6 of the seven-layer OSI model of computer networking and serves as the data translator for the network. TERM 19
Layer 7
DEFINITION 19 The Internet protocol suite and the Open Systems Interconnection model (OSI model) of computer networking each specify a group of protocols and methods identified by the name application layer. TERM 20
Protocol
DEFINITION 20 set of rules
Star
Bus that goes out and comes back. Physically it looks like one wire coming out. TERM 22
Mesh
DEFINITION 22 Everything is connected to everything TERM 23
Internet
DEFINITION 23 a collection of networks TERM 24
Analog
DEFINITION 24 Information that iscontinuous TERM 25
Digital
DEFINITION 25 information that has discrete states
Phase
describes the position of the waveform relative to time 0 TERM 32
Bandwidth
DEFINITION 32 The range of frequencies contained in a composite signal measure in Hertz TERM 33
Bit Rate
DEFINITION 33 the number of bits sent in TERM 34
Buffer
DEFINITION 34 memory where we store stuff TERM 35
Line Coding
DEFINITION 35 the process of converting digital data to digital signals. Converts a sequence of bits to digital signal
Baud Rate
how many times the frequencyIn digital communications, symbol rate is the number of symbol changes (waveform changes or signalling events) made to the transmission medium per second using a digitally modulated signal or a line code. TERM 37
Self Synchronizing
DEFINITION 37 digital signals includes timing information in the data being transmitted. TERM 38
Block Coding
DEFINITION 38 take a block of bits and encoding them at one time TERM 39
Parallel Transmissions
DEFINITION 39 by grouping we can send data "n" bits at a time instead of 1. Use "n" wires to send "n" bits. TERM 40
Asynchronous Transmission
DEFINITION 40 information isreceived and translated by agreed upon patterns.
