Question 3: (14 marks) A. The IT director was informed about two new Cisco IOS commands: Portfast and BPDU Guard. He would like to knowmore about these two commands. You are asked to explain, using your own words, the purpose of each of these two commands (Portfast and BPDU Guard) Your explanation should cover the following points: the devices and ports these two commands can be used on; the purposes of these two commands; the advantage(s) of these two commands; the disadvantage(s) of these two commands, your recommendations regarding the use or not of these commands. Your explanation should not exceed 300 words. (10 marks) B. Compress the following IPv6 addresses (2 marks) FE80:0050:000A:0000:1000:0000:0000:0000 C. De-compress the following IPv6 address (2 marks) BBOO.CDE:7000:FF02:4A70:15