Close

Calculating your score ...

Back Click your answer, then NEXT and END when you are done to find out how you got on!
1 of 9
1. Which is an IP address on the network of 21.0.0.0 with a subnet mask of 255.0.0.0. Which IP address is on this network:
	21.15.169.20
	20.15.169.20
	23.15.169.20
	22.15.169.20

<