4 ms·
10/8 is a class A range (high order bit = 0), but CIDR says that you can separately describe which bits are for the network. Unless this interview was conducted
by srj 8y ago
10/8 is a class A range (high order bit = 0), but CIDR says that you can separately describe which bits are for the network. Unless this interview was conducted more than 20 years ago I'd say your interviewer was mistaken.
- forapurpose 8y ago> I'd say your interviewer was mistaken Is that what you meant to say? The interviewer (me) thought that 10.0/16 was fine, which I think agrees with your analysis. The interviewee said only 10/8 was correct. (Re-reading my GP comment I realize that my role might have been ambiguous, so I've clarified it.)
- HighPlainsDrftr 8y agoIf you said 10/24, I'd immediately think 10.0.0.0/24. 10/8 would certainly be valid. 10.0/16 is too. I remember when CIDR came around back in the 90's. Man people were pissed off when you would call out a 'Class A/B/C/D/E' block. I prefer to always be specific when writing my CIDR. I understand when people don't do it. Be liberal in what you accept and conservative in what you send.
- forapurpose 8y agoYes, Postel's advice applies to many things. I think there is some misunderstanding. The question wasn't the notation but the subnetting. See the story in the GGP.
- srj 8y agoSorry yes, you were right in saying 10.0/16.