Optical Fibres Vs Satellites

Question 1

Why optic fibres are better than copper fibres?

Answer 1

Use less energy
Need fewer boosters
No cross-talk with adjoining cables
Difficult to bug
Less weight -> easier to install

Question 2

Speed of microwaves

Answer 2

3 * 10^8 m/S

Question 3

Speed of infrared in optic fibres

Answer 3

2* 10^8

Question 4

Optic fibres Pros

Answer 4

Hard to hack, weigh less than copper wires alternatives and not interfered by neighbouring cables.
Data is good quality.

Question 5

Optic fibres cons

Answer 5

Hard to repair under the sea

Question 6

Satellite Pros

Answer 6

Stall rotes cover more of the Earth.

Geostationary stalleites will always stay in contact with the base stations.

Question 7

Satellite cons

Answer 7

Easily intercepted
(Time delay)
Geosynchronous, when earth rotates, the signal is lost

Question 8

As water gets shallower…

Answer 8

….wave speed decreases

Question 9

What is geosynchronous?

Answer 9

Orbits earth in 24hr however the object in orbit only returns to the same position in the sky after a period of 1 day

Question 10

Geostationary definition

Answer 10

Satellite remains above the same point in the Earth’s surface and takes 24 hours to complete an orbit. (Above equator and 36000km)

Most communication satellites are geostationary to keep a constant connection with the satellite dishes.