Please, i want Answer from book Data Communications and Networking

Q1

What is the difference between internet and Internet? A network must be able to meet a certain number of criteria, such as reliability and security. Explain both of them.

An internet (small i) The Internet (big I)

Q2

100 50 10 0.5 o.1 0,01 1000 1200 Wavelength (nm) 800 1400 1600 1800 By using the above Figure that represents the loss (dB/km) of an optical fibe versus wavelength, calculate the loss in dB at the corresponding distance ot the fiber by completing the following table: dB at 800nm dB at 1000nm dB at 1200nm 1km 20 km