5G & 6G — Set 3
Technology · 5G और 6G · Questions 21–30 of 40
Which 5G spectrum band is known for providing a balance between coverage and speed?
Correct Answer: A. Mid-band
Mid-band 5G (typically 1 GHz - 6 GHz) offers a good mix of fast speeds and wide area coverage. It is often referred to as the 'sweet spot' for mobile network deployment. Most initial national 5G rollouts focus heavily on this mid-band spectrum.
What is a 'Digital Twin' in the context of 6G research?
Correct Answer: B. A virtual replica of a physical object or system
A digital twin is a real-time virtual representation of a physical asset, process, or person. 6G will enable these twins to stay perfectly synced with the real world due to high speeds and low latency. This is highly useful for city planning and industrial monitoring.
What does 'Massive Machine Type Communications' (mMTC) support in 5G?
Correct Answer: B. A large density of low-power IoT devices
mMTC is designed to connect millions of devices per square kilometer, such as smart meters and sensors. These devices typically transmit small amounts of data and need long battery life. This is a core part of building 'Smart Cities' using 5G technology.
Which 6G technology involves the network also acting as a radar to sense the environment?
Correct Answer: B. Joint Communication and Sensing (JCAS)
Joint Communication and Sensing (JCAS) allows 6G signals to transmit data while simultaneously acting like a radar. This means the network can detect the presence and movement of objects without separate sensors. It will be crucial for navigation and safety in future smart environments.
Which country launched the world's first commercial 5G network in 2019?
Correct Answer: C. South Korea
South Korea became the first nation to offer nationwide commercial 5G services through its major carriers. They achieved this milestones in April 2019, slightly ahead of the United States. Since then, the country has remained a leader in 5G adoption and technology.
What is the primary benefit of 5G for 'Autonomous Vehicles'?
Correct Answer: C. Near-instant communication for safety
Autonomous vehicles need to communicate with other cars and road infrastructure instantly to avoid accidents. 5G's low latency allows these decisions to happen in milliseconds, much faster than human reaction time. This 'V2X' (Vehicle-to-Everything) communication is essential for fully self-driving cars.
Which frequency band in 5G has the best ability to penetrate buildings and travel long distances?
Correct Answer: A. Low-band (below 1 GHz)
Low-band 5G uses frequencies below 1 GHz, similar to those used by 4G and traditional TV. These waves can travel long distances and easily pass through walls and windows. However, the data speeds in this band are generally slower than mid-band or high-band 5G.
What does '6G' stand for in telecommunications?
Correct Answer: B. 6th Generation
6G refers to the sixth generation of mobile network technology. It follows 5G and is expected to be commercially available around 2030. Each generation brings significant improvements in speed, capacity, and new use cases.
Which 6G application involves 'Collaborative Robots' working together with zero delay?
Correct Answer: B. Industrial Automation
6G will enable precision industrial automation where robots can coordinate complex tasks instantly. This relies on the ultra-low latency and high reliability of the future 6G standard. This will lead to more efficient and flexible manufacturing processes.
In which generation of mobile networks was the first 'Gems' data service (1G) introduced?
Correct Answer: C. 1980s
The first generation (1G) of mobile networks was launched in the 1980s. It was based on analog technology and only supported voice calls. It paved the way for the digital revolution that followed with 2G and subsequent generations.