TECNOLOGY 2 ESO. Unit 2. Security and responsability. Review.

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UNIT 2. Internet. Security and responsability.
1. Unit summary:
1. Internet: is a network of thousands of computers and devices around the world
connected by cooper wires, fibre optics, wireless connections and other methods.
2. Browser: a programme that displays the content of web pages.
3. Search engine: is a computer system that indexes files stored on websites.
4. URL: uniform resource locator. The address that identifies a website on the Internet.
5. Server: is a computer with special features, prepared to provide uninterrupted
services to lots of useers.
2. Order the stages that go from when I connect to the Internet to search for
an address in a browser until the corresponding web page appears:
1. I connect to the Internet if I have got an Internet servide provider (ISP) that
assigns an addres to my computer, calle dan IP address.
2. A router lets me connect to the Internet. Once connected, I open my browser
and type the address of a page in it (URL). Information starts to travel in the
form of packets.
3. DNS servers assign a name to each IP address.
4. My computer communicates with other computers following a common set of
rules called a protocol.
5. The DNS server sends the request to the server that hosts the web page we
want to visit.
6. Finally, the packets reach our computer and are reassembled. The page is then
displayed in our browser.
3. Tell me four tools to protect our personal safety and machine security.
1. Our attiude protects us from identify theft, phising, loss of privacy, damage to
our identity or image, ciberbullying,…
2. Antivirus that can protect our computer from attacks by viruses and Trojans.
3. Firewall that displays alerts to ask confirmation for any program that uses the
Internet connection.
4. Passwords that can enhance the security of a file, folder, computer, etc.

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4. Match up the ítems in these two columns:
Threat Answer
Virus ANTIVIRUS Criptography
Trojans ANTIVIRUS Firewall
Black hackers CRIPTOGRAPHY. WHITE
HACKING
Antivirus
Ciberbullying REPORT Passwords
Spyware FIREWALL Report
Loss of privacy TAKE CARE OF OUR PRIVACY White hacking
Phising PASSWORDS Take care of our privacy
5. Explain why our attitude is our best protection to the Internet.
We must be digitally responsable. When we use Internet tools, we need to keep in mind
our own safety and respect for others. We have to use commom sense and do not do
things on a computer that we would not do in everyday life.
6. What is the digital footprint?
Everything we do on the Internet leaves a trace. This information is our digital identity
and it is our duty to take care of it.