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twisted pair cabletwisted pair cable consists of two insulated copper wires each about 1 mm thick arranged in a regular
wireless accesswireless access connecting end systems that are often mobile into the network today there are two broad types of wireless
company accesscompany access is that in which end systems are connected in connecting end systems in a organization or educational
classification of access networks access networks can loosely be classified into three categories1residential access2company
subscriber database core network also hosts the subscribers database for e g hlr in gsm systems subscriber database is accessed
primary function core network typically providing the followings functionality1aggregation the highest level of aggregation in a
network protocolsin computer networks communication occurs between the entities in different systems an entity is
undesirable sharing with the good comes the bad while networking allow the easy sharing of useful information
hardware sharing network facilitate the sharing devices for example instead of giving each of 10 employees in
data sharingone of the most important uses of networking is to allow the sharing of data before networking was common an accounting employee who
advantages and disadvantage of computer networking most of the benefits of networking can be divided into two generic
financial servicestoday financial services are totally depended on computer network application includes credit history searchers foreign
securitysecurity is the protection of hardware software and data from unauthorized access restricted physical access to computer
reliabilityreliability is the measure of how often a network is usable mtsf mean time between failure is a measure of the average
the network interface layerthe functions of the data link layer and the physical layer of the osi model have been
the internet layerthe internet layer is responsible for routing the data packets to the appropriate destination internet
the transport layercommunication between computers is handled by the transport layer which is comprised of transmission control
the application layerthis layer enables users to access the network by providing a few services to the user some of the
application layerthe application layer provides an interface between application entities and the users computer this layer
intrinsic functionshpf introduces some new intrinsic functions in addition to those defined in f90 the two most regularly used in parallel
independent loopshpf gives additional opportunities for parallel implementation by using the independent directive to assert that the iterations of a
the forall statementthe forall statement allows for more common assignments to sections of an array a forall statement has the general
processor arrangementsit is a very frequent event in data parallel programming to group a number of processors to perform definite tasks to reach
programming based on data parallelismin a data parallel programming model the focus is on data distribution every processor works with a portion of
programming based on message passingas we know the programming model based on message passing uses high level programming languages like cc along