помогите в школе задали!!

Ненадежный он по следующим причинам:
-По интернету могут свиснуть базы, номера, счета;
-Залетит вирус-мало не покажется;
-Хакер может удалить драйвера в чужом кампе--полетит железка;
-К 2010 году Интернет подойдет к пределу своих возможностей, с 2012 года число пользователей Интернета достигнет такого количества, что он уже не сможет обеспечить нормальную работу компьютерных сетей и будет постоянно находиться в полупарализованном состоянии (аналитическая технологическая служба «Nemertes».)

или

Internet in daily life

More and more people nowadays are interested to be known about all events, in taking some information quickly. With the help of Internet you can make it easily. Back in the 1960th, at the time of cold war, Pentagon asked a question: "How can could orders be issued to the armed forces in the U.S. were ravaged by a nuclear assault?" The communication ways at that time - the telephone, which connected offices, the radio and TV stations - were not only vulnerable to attack, they would also probably the first to go. Pentagon needed military systems that would continue to work even the phones and radio had broken down. In 1964 Paul Baran connected 4 computers in different patts of the USA and posted a message. You couldn't destroy Internet - if some computers will be broken down, the rest will work well. Nobody owns the Internet, and no organization controls its use. Now millions of people around the world are logging into libraries, call up satellite weather photos, download computer programs and music, take part in discussion groups. Even the Presidents have their own Internet accounts. In fact, anyone with modem connected to the phone line can enjoy Internet. The total number of people in Russia, who get into Internet, due the Putin's statistics, is 10 million. In the modern Europe this number is muck more - there are more than 200 million Internet users. Internet users are unimpressed by television promise of 500 channel future. The Internet already delivers 100.000 channels for all interests. In future all technics will be connected to the Internet. Now we can connect with Internet mobile phone, photo camera, palm computers and even alarm clock. Now we can be connected with all the world everywhere - in the bus, underground and even on the north pole.

Удачной учебы.

надежный

Internet unreliable because every puzzle in the computer people can easily access your files, but this is nothing you will not know. Internet is dangerous, he can pick you all your free time, and you can become a slave in full World Wide Web. Other words: nothing, the internet is a drug.