Networks A Level Notes Information Technology 9626

Media Summary: Unauthorized Access Commonly known as hacking, it occurs when someone gains access to a Satellite: An object in space that follows an orbital path. GPS: Global Positioning System - uses satellites to determine the current ... Optical communications use light to transmit data. The speed of light is the fastest in the universe, which means that there is ...

Networks A Level Notes Information Technology 9626 - Detailed Analysis & Overview

Unauthorized Access Commonly known as hacking, it occurs when someone gains access to a Satellite: An object in space that follows an orbital path. GPS: Global Positioning System - uses satellites to determine the current ... Optical communications use light to transmit data. The speed of light is the fastest in the universe, which means that there is ... Bluetooth This uses wireless frequencies between 2402 and 2480 MHz. Bluetooth splits data into packets which can be ... Protocols A protocol is a set of rules that ensure data is transferred correctly. A protocol defines the type of error checking, how ... Backup A backup is a copy of the original data, and in the event of a problem, th e backup copy can be restored. This does not ...

Parallel Running This is when a new system and an old system are run at the same time. On a certain date, the new system will be ... Computer-Aided Translation software can extract text from images and translate it into the language of choice. This is especially ... Test Data When a system has been developed, it needs to be tested. Test data should be used. Each field should be tested. About this video In this lesson, we introduce the basics of hardware and software for the A Streaming takes place when video or audio files are sent to a receiving device for viewing or listening without downloading any ...