the chapter mentions bus width when it introduces bus lines, but it doesn't define bus speed. When you search online about CPUs or expansion cards (e.g., PCIe cards), you can easily find they specify their bus speed like 9.6 MT/s or 4 GT/s.

4.

a) Do a simple online research and explain what 'MT/s' and 'GT/s' are.

b) If a data bus has a width of 64 bits with a speed of 5 GT/s, then what is its total bit rate in Gb/s(here 'b' means bit)?

2)

What is a USB port? The textbook says "USB-C is faster, more powerful, and smaller than previous USB types." This is because the default protocol with the USB-C connector is USB 3.1. Do a simple research to find the speed of USB 3.1.