1. What is the primary function of a communication satellite?
- A) To transmit weather data
- B) To provide a communication link between two points on Earth
- C) To monitor Earth’s atmosphere
- D) To detect earthquakes
Answer: B) To provide a communication link between two points on Earth
2. Which of the following is NOT a type of satellite orbit used in satellite communication?
- A) Geostationary Orbit
- B) Polar Orbit
- C) Elliptical Orbit
- D) Circular Orbit
Answer: D) Circular Orbit
3. Which frequency band is commonly used for satellite communication?
- A) X-band
- B) C-band
- C) Ku-band
- D) All of the above
Answer: D) All of the above
4. What is the main advantage of using geostationary satellites for communication?
- A) They are placed at a much higher altitude
- B) They remain fixed above the same point on Earth
- C) They transmit data more efficiently
- D) They use lower frequency bands
Answer: B) They remain fixed above the same point on Earth
5. What is the typical altitude of a satellite in geostationary orbit?
- A) 300 km
- B) 2,000 km
- C) 36,000 km
- D) 100,000 km
Answer: C) 36,000 km
6. What is the main disadvantage of low Earth orbit (LEO) satellites?
- A) High power consumption
- B) Short lifespan
- C) High latency
- D) Limited coverage area
Answer: D) Limited coverage area
7. Which component of a satellite is responsible for receiving and transmitting signals to and from Earth?
- A) Antenna
- B) Transponder
- C) Solar panel
- D) Propulsion system
Answer: B) Transponder
8. What is the term used to describe the time delay for signals traveling from Earth to a satellite and back?
- A) Latency
- B) Doppler shift
- C) Propagation delay
- D) Signal degradation
Answer: A) Latency
9. Which of the following is a major application of satellite communication?
- A) Global positioning systems (GPS)
- B) Television broadcasting
- C) Weather forecasting
- D) All of the above
Answer: D) All of the above
10. What is the role of the uplink in satellite communication?
- A) To receive signals from Earth
- B) To transmit signals from the satellite to Earth
- C) To transmit signals from Earth to the satellite
- D) To boost the signal strength
Answer: C) To transmit signals from Earth to the satellite
11. What is the role of the downlink in satellite communication?
- A) To transmit signals from Earth to the satellite
- B) To transmit signals from the satellite to Earth
- C) To amplify the signals from Earth
- D) To receive signals from other satellites
Answer: B) To transmit signals from the satellite to Earth
12. Which of the following is a disadvantage of using satellite communication?
- A) High bandwidth
- B) High power consumption
- C) High initial setup and maintenance cost
- D) Very low latency
Answer: C) High initial setup and maintenance cost
13. In a satellite communication system, what is the function of a transponder?
- A) To convert the uplink frequency to a different downlink frequency
- B) To provide power to the satellite
- C) To send and receive signals from the ground station
- D) To stabilize the satellite’s orbit
Answer: A) To convert the uplink frequency to a different downlink frequency
14. What is the name of the orbit used for communication satellites that requires the satellite to remain above the same point on the Earth’s surface?
- A) Low Earth Orbit (LEO)
- B) Medium Earth Orbit (MEO)
- C) Geostationary Orbit (GEO)
- D) Sun-synchronous Orbit
Answer: C) Geostationary Orbit (GEO)
15. Which of the following is an example of a geostationary satellite communication system?
- A) Iridium
- B) Globalstar
- C) VSAT (Very Small Aperture Terminal)
- D) Intelsat
Answer: D) Intelsat
16. Which of the following is the main characteristic of Low Earth Orbit (LEO) satellites?
- A) They provide continuous coverage to a specific region
- B) They orbit at a very high altitude
- C) They have a low latency and are suitable for real-time communication
- D) They can cover large areas of the Earth
Answer: C) They have a low latency and are suitable for real-time communication
17. What type of satellites does the Global Positioning System (GPS) use?
- A) Geostationary Orbit (GEO) satellites
- B) Medium Earth Orbit (MEO) satellites
- C) Low Earth Orbit (LEO) satellites
- D) Sun-synchronous satellites
Answer: B) Medium Earth Orbit (MEO) satellites
18. What does the term “footprint” refer to in satellite communication?
- A) The physical size of the satellite
- B) The coverage area of the satellite on Earth’s surface
- C) The type of signals transmitted by the satellite
- D) The satellite’s path in orbit
Answer: B) The coverage area of the satellite on Earth’s surface
19. What is the typical frequency range for satellite communication in the C-band?
- A) 2 GHz to 4 GHz
- B) 4 GHz to 6 GHz
- C) 10 GHz to 12 GHz
- D) 12 GHz to 18 GHz
Answer: A) 2 GHz to 4 GHz
20. What is the typical purpose of a satellite’s solar panels?
- A) To receive signals from Earth
- B) To transmit signals to Earth
- C) To provide power to the satellite
- D) To stabilize the satellite’s position
Answer: C) To provide power to the satellite
