Question

What is the reason for the disruption of normal communication system?

• A. Breakage of cable
• B. Damage to transmission tower
• C. Disruption of power supply
• D. All of these

Hint:

During major disasters, "All of these" factors often fail simultaneously, which is why satellite phones and HAM radio are used as emergency backups since they are less dependent on local infrastructure.

Answer 1

The Correct Option is D

Normal communication systems rely on a complex network of physical infrastructure, electrical power, and signal transmission. A failure in any of these critical components can lead to a total breakdown of the system.

Step 1: Analyze the options.
(A) Breakage of cable: Physical communication lines, such as fiber optic cables or telephone wires, are essential for carrying data. If these are cut or broken—often during natural disasters like earthquakes or floods—the flow of information stops.
(B) Damage to transmission tower: Towers are responsible for sending and receiving wireless signals (mobile, radio, etc.). Structural damage to these towers prevents the propagation of signals across the network.
(C) Disruption of power supply: Communication hardware (servers, routers, base stations) requires a constant supply of electricity. Without power, even physically intact infrastructure cannot function.
(D) All of these: Since all the factors mentioned above are vital for maintaining connectivity, any of them (or a combination) can cause a disruption.

Step 2: Conclusion.
Because communication is dependent on infrastructure, transmission, and power, the correct answer is "All of these."
Final Answer: \[ \boxed{(D) \, \text{All of these}} \]