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The software can encrypt specified files, or the whole of the hard disk on which the files are stored. Over time, more and more files become fragmented, as do individual files. A fragmented disk takes ...

A network's topology is the arrangement, or pattern, in which all nodes on a network are connected together. There are several common topologies that are in use, but today the most common topologies ...

英国には義務教育後の卒業認定試験「GCSE」（General Certificate of Secondary Education）という制度がある。これは英国で中等教育を受けたことを証明する資格で、主な対象は14歳から16歳の学習者だ。一般的には、必修科目や選択科目を2年間学び、試験を受けること ...