Ccna routing and Switching Complete Study Guide

Cellular 3G/4G    Having a wireless hot spot in your pocket is pretty normal these days. If 

you have a pretty current cellular phone, then you can probably can gain access through 

your phone to the Internet. You can even get a 3G/4G card for an ISR router that’s useful 

for a small remote office that’s in the coverage area.

VSAT    Very Small Aperture Terminal (VSAT) can be used if you have many locations 

geographically spread out in a large area. VSAT uses a two-way satellite ground sta-

tion with dishes available through many companies like Dish Network or Hughes and 

connects to satellites in geosynchronous orbit. A good example of where VSATs are a 

useful, cost-effective solution would be companies that use satellite communications 

to VSATs, like gasoline stations that have hundreds or thousands of locations spread 

out over the entire country. How could you connect them otherwise? Using leased 

lines would be cost prohibitive and dial-ups would be way too slow and hard to man-

age. Instead, the signal from the satellite connects to many remote locations at once, 

which is much more cost effective and efficient! It’s a lot faster than a modem (about 

10x faster), but the upload speeds only come in at about 10 percent of their download 

speeds.