Interview Q&A / Computer Networks
Computer Networks interview questions
What happens when you open a website, TCP vs UDP, DNS and HTTP.
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- Convert 255.255.255.240 to CIDR notation, and /21 to a dotted mask.
255.255.255.240 has 28 one-bits (24 plus 4 from 240 = 11110000), so it is /28, giving 16 addresses and 14 usable hosts. A /21 is 255.255.248.0.
BeginnerQuick answer1 min read