Vídeo about Internet: BACHILLER

QUESTIONS:
1. What causes the delay of the signals? 2. What is the material of the cables? 3. Where are the big data stored? 4. What is the definition of a server? 5. How is identified a computer or a mobile phone? 6. Has the data center  an IP adress? 7. What  is the DNS server? 8. How does the information through  the fiber cables travel? 9. Name two companies that maintain the optical cable network. 10. The router convert these ___ ____ to ____ ____ 11. To have internet in your mobile,the signal has to be sent to a ____ ____ 12. What is the name of the institution that manages things like IP and so on? 13. Each packet of data consists of ___ ____ 14.What also contains the packet? 15. The protocols set ____ ____ ____ _____ _____ ______