The following Class A, B and C IPs, give the netID, hosiID, network address and
ID: 3905449 • Letter: T
Question
The following Class A, B and C IPs, give the netID, hosiID, network address and default mask.
netID hostID default mask
Class A: 66.190.24.78: ____ _____ _____________
Class B: 130.45.90.110 _____ _____ ____________
Class C: 199.21.1.20 _____ _____ ____________
Explanation / Answer
1. Class A: 66.190.24.78
Net ID: 66.0.0.0
Host ID: 0.190.24.78
Default mask: 255.0.0.0
2.
Class B: 130.45.90.110
Net ID: 130.45.0.0
Host ID: 0.0.90.110
Mask: 255.255.0.0
3.
Class C: 199.21.1.20
Net ID: 199.21.1.0
Host ID: 0.0.0.20
Mask: 255.255.255.0