Examen 2 P1 Flashcards
Protocol layering, packet switching, routing and data streaming are the principles on which.
computer networks are based
The computers and other devices that use the network for communication purposes are referred to as
Host
This is the delay that occurs after a send operation is executed before data starts to arrive at the
destination computer in network performance.
Latency
This term is used to refer to any computer or switching device attached to a network
Node
This is the speed at which data can be transferred between two computersin the network once
transmission has begun.
Data Transfer Rate
This is a single communication subsystem providing communication between all of the hosts that are
connected to it, where the internet is constructed from many subnets.
The internet
They carry messages at lower speeds between nodes that are often in different organizations and may
be separated by large distances.
WANs
The end-to-end communication must provide totally error-free, the detection of communication
errors and their correction is that we call:
Reliability
This is a sequence of binary data (an array of bits or bytes) of restricted length, together with
addressing information sufficient to identify the source and destination computers.
simplest form of package
This is a unit of routing (delivering data from one part of the Internet to another)
Subnet
This type of network is based on the high bandwidth copper and fiber optic cabling recently
installed in some towns and cities for the transmission of video, voice and other data over
distances of up to 50 kilometers
MANs
This is defined as the ability to meet deadlines when transmitting and processing streams of real
time multimedia data
Quality of service
This is a communication subsystem in which several networks are linked together to provide common
data communication facilities that overlay the technologies and protocols of the individual component
networks and the methods used for their interconnection.
Internetwork
This is why many network technologies support the simultaneous transmission of messages to
several recipients.
Multicasting
The IEEE 802.16 WIMAX standard is targeted at this class of network. It aims to provide an
alternative to wired connections to home and office buildings
Wireless metropolitan area networks (WMANs)
This is referred to as the transmission and display of audio and video in real time. It requires much
higher bandwidths than most other forms of communication in distributed systems.
Streaming
They are composed of a number of personal devices such as mobile phones, tablets, digital cameras,
music players and so on that are now carried by many people
Wireless personal area networks (WPANs)
They are generally used to hold the video frames, but because the flow is continuous as opposed to the
intermittent traffic generated by typical client-server interactions and are handled somewhat differently
UDP internet packets
In this type of network, most mobile phone networks are based on digital wireless network technologies
such as the GSM standards, which is used in most countries of the world.
Wireless wide area networks (WWANs)
They are specifically designed to provide high bandwidth and low latencies and to support quality of
service by the reservation of network resources.
ATM networks
This is a transmission technique that involves no switching, everything is transmitted to every node, and
it is up to potential receivers to notice transmissions addressed to them.
Broadcast
In this type of switching, each packet arriving at a node is first stored in memory at the node and then
processed by a program that transmits it on an outgoing circuit, which transfers the packet to another
node that is closer to its ultimate destination.
Packet Switching
Their operation was simple to understand, when a caller dialed a number, the pair of wires from her
phone to the local exchange was connected by an automatic switch at the exchange to the pair of wires
connected to the other party´s phone
Circuit Switching
This is used to refer to a well-known set of rules and formats to be used for communication between
processes in order to perform a given task.
The term protocol
The task of dividing messages into packets before transmission and reassembling them at the receiving
computer is usually performed in the transport layer.
Packet assembly
They are software-defined destination points at a host computer. They are attached to processes,
enabling data transmission to be addressed to a specific process at a destination node.
Ports
This is a numeric identifier that uniquely identifies a host computer and enables it to be located by
nodes that are responsible for routing data to it.
A network address
When a pair of nodes connected to two separate networks need to communicate through another type
of network or over an alien protocol, they can do so by constructing a protocol inder a scheme of:
Tunneling
This is a function that is required in all networks except those LANs, such as the Ethernet, that provide
direct connections between all pairs of attached hosts.
Routing
A unified addressing scheme between different networks that enables packets to be addressed
themselves cannot contain very much of the information needed to route a packet to its destination.
An internetwork
This must lend itself to the development of a flexible and efficient routing scheme, but the addresses
themselves cannot contain very much of the information needed to route a packet to its destination.
The addressing scheme
The determination of routes for the transmission of packets to their destinations is the responsibility of
this procedure, which has two parts:
a routing algorithm
It is based upon the permanent allocation of a normal IP address to each mobile host on a subnet in its
home domain.
Mobile IP
The purpose of this is to monitor and control all communication into and out of an intranet.
Firewall
