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The gigabit (Gbit) equals 1,000 megabits or one billion bits, used to describe high-speed network connections and data center interconnects. Modern fiber-optic internet plans often reach gigabit speeds, and enterprise networks rely on gigabit-level throughput for handling large volumes of traffic. One gigabit equals 125 megabytes, highlighting the practical difference between bits and bytes.

The terabyte (TB) equals 1,024 gigabytes or approximately 1.1 trillion bytes, used for large-scale storage like hard drives, cloud backups, and enterprise databases. Modern external hard drives commonly offer 1 to 8 TB of capacity, enough to hold hundreds of thousands of photos or thousands of hours of video. One terabyte represents a massive amount of data by everyday consumer standards.