A TCP connection is made between Port 234 on Host A (with IPv4 address 192.168.2.101) and Port 80 on Host B (with IPv4 address of 192.168.1.2). Which of the values of the following fields in the packets sent from Host A to Host B are correct.

IP Source Address: 192.168.1.2 IP Destination Address: 192.168.2.101 TCP Source Port: 80 TCP Destination Port: 234

IP Source Address: 192.168.1.2 IP Destination Address: 192.168.2.101 TCP Source Port: 234 TCP Destination Port: 80

IP Source Address: 192.168.2.101 IP Destination Address: 192.168.1.2 TCP Source Port: 234 TCP Destination Port: 80

IP Source Address: 192.168.2.101 IP Destination Address: 192.168.1.2 TCP Source Port: 80 TCP Destination Port: 234

A person upgrades their computer's processor. The processor is responsible for 80% of the system's computing effort. What is the maximum possible system speedup (as a percentage) that can be achieved by upgrading the processor?

300%

400%

200%

500%