Q&A-Style for Telecom: Answering the Questions
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Section 1: Legacy Technology - 2G
Q1: What is 2G technology, and when was it introduced?
✅ A: 2G (Second Generation) technology was introduced in the early 1990s. It marked the shift from analog to digital communication, enabling text messaging (SMS) and improved voice quality.
Q2: How does 2G differ from 1G?
✅ A: 1G used analog signals for voice communication, whereas 2G introduced digital encryption, better voice clarity, and data services like SMS and MMS.
Q3: What are the key features of 2G networks?
✅ A: Some key features include digital voice calls, SMS/MMS messaging, circuit-switched data, and improved security through encryption.
Q4: What are the main limitations of 2G?
✅ A: Low data speeds (9.6-14.4 kbps initially), limited multimedia support, and reliance on circuit-switched communication were major drawbacks.
Q5: What are the key technologies used in 2G?
✅ A: 2G used GSM (Global System for Mobile Communications), CDMA (Code Division Multiple Access), and later GPRS (General Packet Radio Service) for improved data services.
Section 2: Evolution to 2.5G and 2.75G
Q6: What is 2.5G, and how did it improve 2G?
✅ A: 2.5G introduced packet-switched data via GPRS, offering speeds up to 56 kbps, enabling basic internet access and WAP services.
Q7: What is 2.75G (EDGE), and why is it important?
✅ A: EDGE (Enhanced Data rates for GSM Evolution) improved GPRS with better modulation techniques, achieving speeds up to 384 kbps, bridging the gap between 2G and 3G.
Q8: Is 2G still in use today?
✅ A: While many countries have phased out 2G, it is still used in some regions for basic communication and IoT applications.
Q9: What are the security vulnerabilities of 2G?
✅ A: Weak encryption, susceptibility to eavesdropping, and lack of robust authentication mechanisms made 2G networks vulnerable to attacks.
Q10: Why are telecom providers shutting down 2G networks?
✅ A: The shutdown is driven by the need to repurpose spectrum for faster technologies like 4G and 5G, along with the security vulnerabilities of 2G.
📌 Conclusion: This Q&A guide provides a deep dive into the legacy 2G technology and its evolution. Stay tuned as we cover 3G, 4G, and 5G in upcoming sections!
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