Computer Networking
Which of the following best illustrates the default subnet mask for a class A,B, and C Network?

0.0.0.0, 0.0.0.1, 0.0.1.1
255.255.0.0, 255.255.255.0, 255.255.255.255
255.255.255.0, 255.255.0.0, 255.0.0.0
None of these
255.0.0.0, 255.255.0.0, 255.255.255.0

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Computer Networking
If routers in a single area are configured with the same priority value, what value does a router use for the OSPF Router ID in the absence of a loopback interface?

The highest IP address of any logical interface
The highest IP address of any physical interface
The lowest IP address of any logical interface
The lowest IP address of any physical interface

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