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Cellular Networks Video Lecture | Science & Technology for UPSC CSE
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146 videos|358 docs|249 tests
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FAQs on Cellular Networks Video Lecture - Science & Technology for UPSC CSE
| 1. What are cellular networks? |  |
Ans. Cellular networks are a type of wireless communication network that allows mobile devices, such as smartphones and tablets, to connect to the internet and make phone calls through a network of cell towers. These networks use radio waves to transmit data and provide coverage over a specific geographic area.
| 2. How do cellular networks work? | |
Ans. Cellular networks work by dividing a geographic area into smaller regions called cells, each served by a cell tower. When a mobile device moves from one cell to another, it automatically switches its connection to the nearest tower. This handoff process ensures continuous connectivity as users move around. The cell towers are interconnected and connected to the internet, allowing data and voice signals to be transmitted and received.
| 3. What is the difference between 4G and 5G cellular networks? | |
Ans. 4G and 5G are different generations of cellular networks. 4G, also known as LTE (Long-Term Evolution), provides faster data speeds compared to its predecessor, 3G. It offers download speeds of up to 100 Mbps. On the other hand, 5G is the latest generation and offers even faster speeds, with potential download speeds of up to 10 Gbps. 5G also has lower latency and increased capacity, allowing for more simultaneous connections and better performance in crowded areas.
| 4. Are cellular networks secure? | |
Ans. Cellular networks employ various security measures to protect user data and communication. These include encryption of data transmission, authentication protocols, and network-level security mechanisms. However, like any network, cellular networks can still be vulnerable to certain types of cyber attacks. It is essential for users to take additional precautions, such as using strong passwords and avoiding connecting to unsecured Wi-Fi networks, to enhance their own security.
| 5. How is the coverage of cellular networks determined? | |
Ans. The coverage of cellular networks is determined by the placement and density of cell towers. Cell towers transmit signals over a limited range, and multiple towers are strategically placed to provide overlapping coverage. Factors such as terrain, buildings, and interference from other signals can affect the coverage area. Cellular network providers continuously work to expand and optimize their networks to provide better coverage to their users.
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Nov 17, 2024 Last updated |
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