1.0 INTRODUCTION The purpose of a computer network is allow to moving information from one point to another inside the network. The information could be stored on a device such as a personal computer in the network, it could be generated lived outside the network, such as speech, or could be generated by a process on another piece of information such as automatic sales transactions at the end of business day. The device does not necessarily have to be a computer, it could be a hard disk, a camera or even a printer on the network. Due to a large variety of information to be moved, and due to the fact that each type of information has its own conditions for intelligibility, the computer network has evolved into a highly complex system. Specialized knowledge from many areas of science and engineering goes into the design of networks. It is practically impossible for a single area of science or engineering to be entirely responsible for the design of all the components. Therefore, the study of computer networks braches into many areas as we go up from fundamentals to the advance levels. 2.0 MOBILE COMPUTING 2.1 DEFINITION
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Computer Networks and Communication Ict Assasment 2010
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1.0 INTRODUCTION
The purpose of a computer network is allow to moving information from one point to another inside
the network. The information could be stored on a device such as a personal computer in the network, it
could be generated lived outside the network, such as speech, or could be generated by a process on
another piece of information such as automatic sales transactions at the end of business day. The device
does not necessarily have to be a computer, it could be a hard disk, a camera or even a printer on the
network. Due to a large variety of information to be moved, and due to the fact that each type of
information has its own conditions for intelligibility, the computer network has evolved into a highly
complex system. Specialized knowledge from many areas of science and engineering goes into the
design of networks. It is practically impossible for a single area of science or engineering to be entirely
responsible for the design of all the components. Therefore, the study of computer networks braches into
many areas as we go up from fundamentals to the advance levels.
2.0 MOBILE COMPUTING
2.1 DEFINITION
Using a computing device while in transit. Mobile computing implies wireles transmission, but wireless
transmission does not necessarily imply mobile computing. Fixed wireless applications use satellites,
radio systems and lasers to transmit between permanent objects such as buildings and towers.
2.2 SPECIFICATION, SERVICES AND FREQUENCIES OF MOBILE COMPUTING