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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