Final answer:
Data replication, Massive MIMO, and proactive packet drop are three techniques used in 5G networks to provide reliable communications.
Step-by-step explanation:
Data replication: This technique involves creating multiple copies of data in different locations to ensure its availability even in the face of network failures or congestion. In 5G networks, data replication improves reliability and reduces latency.
Massive MIMO: This technique stands for Massive Multiple-Input Multiple-Output and involves using a large number of antennas at both the transmitting and receiving ends. By having more antennas, 5G networks can increase network capacity, improve spectral efficiency, and provide better coverage.
Proactive packet drop: This technique refers to dropping packets before network congestion occurs in order to prevent network congestion and maintain reliable communications. By dropping packets proactively, 5G networks can manage network resources more efficiently and reduce the risk of delays or dropped packets during periods of high traffic.