Which of the following is a disadvantage of GIS?

Which of the following is a disadvantage of GIS?

• A. Satellite based so can be used anywhere with a view of the sky
• B. It can be used to find the quickest route to a point
• C. Requires signal
• D. It shows your position on a map using a computer

Answer: (C)

Geographic information systems rely on signals to pinpoint location and update data. The drawback here is that if there’s no signal—inside buildings, underground, in tunnels, or in areas with poor reception—the system can’t determine your exact position or update maps accurately. That interruption can prevent route calculations or data display, which makes it a real limitation of GIS in some situations. The other options describe strengths of GIS: being satellite-based expands coverage where you can see the sky; it can help find the quickest route; and it can show your position on a map. These are advantages, while needing a signal highlights a notable disadvantage.

Geographic information systems rely on signals to pinpoint location and update data. The drawback here is that if there’s no signal—inside buildings, underground, in tunnels, or in areas with poor reception—the system can’t determine your exact position or update maps accurately. That interruption can prevent route calculations or data display, which makes it a real limitation of GIS in some situations.

The other options describe strengths of GIS: being satellite-based expands coverage where you can see the sky; it can help find the quickest route; and it can show your position on a map. These are advantages, while needing a signal highlights a notable disadvantage.