5G & 6G — Set 4
Technology · 5G और 6G · Questions 31–40 of 40
Which 'Gems' feature was first introduced with 2G technology?
Correct Answer: B. SMS (Short Message Service)
2G networks, introduced in the 1990s, were the first to be digital. This allowed for the introduction of text messaging (SMS), which revolutionized human communication. 2G also brought basic data services through technologies like GPRS.
What was the primary breakthrough of 'Gems' 3G technology?
Correct Answer: B. Mobile internet and video calling
3G networks brought the first meaningful mobile broadband experience to users. It enabled activities like video calling, mobile web browsing, and data-heavy applications. This generation transformed the mobile phone into a versatile computing device.
Which 'Gems' technology is 4G networks based on?
Correct Answer: B. LTE (Long Term Evolution)
The correct answer is 'LTE (Long Term Evolution)'. 4G is primarily based on LTE technology, which was designed to provide high-speed mobile internet. It supports mobile web access, IP telephony, gaming services, and high-definition mobile TV. 4G made the modern 'app economy' and streaming services possible.
In 'Gems' terms, what is the 'Generation' (G) interval in mobile technology?
Correct Answer: C. Every 10 years
Historically, a new generation of mobile network technology has emerged approximately every 10 years. 1G appeared in the 1980s, 2G in the 1990s, 3G in the 2000s, 4G in the 2010s, and 5G in the 2020s. 6G is expected to follow this trend around 2030.
Which 'Gems' frequency band is used by the majority of global 4G networks?
Correct Answer: B. Sub-6 GHz
Most 4G and early 5G networks operate in the sub-6 GHz frequency range. This spectrum offers a balance between carrying capacity and the ability to cover large areas. Frequencies above 6 GHz (like mmWave) are only now being used extensively with 5G.
What is the 'Gems' full form of SIM in mobile phones?
Correct Answer: A. Subscriber Identity Module
The Subscriber Identity Module (SIM) card stores the unique information used to identify a user on a mobile network. It securely stores the service-subscriber key used to identify a subscriber on mobile telephony devices. Modern versions include the eSIM, which is built directly into the device.
Which 'Gems' organization manages the radio spectrum globally?
Correct Answer: B. ITU (International Telecommunication Union)
The ITU is a specialized agency of the United Nations that coordinates global telecommunications and radio spectrum. It ensures that wireless signals do not interfere with each other across international borders. They hold World Radiocommunication Conferences to allocate spectrum for new technologies.
In 'Gems' mobile technology, what does 'Handover' refer to?
Correct Answer: B. Transferring a call from one base station to another
Handover occurs when a mobile user moves from the coverage area of one cell tower to another during a call or data session. The network must seamlessly transfer the connection without dropping it. This process is a fundamental requirement for mobile wireless communication.
What is the 'Gems' term for the area covered by a single base station?
Correct Answer: B. A Cell
Mobile networks are divided into geographic areas called cells, each served by at least one fixed-location transceiver. This is why mobile phones are also commonly called 'cell phones'. The size of a cell depends on the frequency used and the terrain.
Which country launched the world's first commercial 5G network in April 2019, making it a global pioneer in 5G technology?
Correct Answer: C. South Korea
The correct answer is South Korea. South Korea launched the world's first commercial 5G network in April 2019, just hours before the USA's commercial 5G launch. South Korea's three major telecom operators (SK Telecom, KT, and LG Uplus) simultaneously switched on 5G services, making South Korea the first country with a commercial 5G network. This topic is frequently tested in competitive.