Chapter 24
1. F. The word classless in this term refers to the fact that the routes advertise a block of addresses with a mask, and can essentially ignore the Class A, B, and C boundaries with regard to what address block is used. Also, because the motivation was to describe routes between different companies (different routing domains), the term uses the word interdomain.
2. D. CIDR’s original intent was to allow the summarization of multiple Class A, B, and C networks to reduce the size of Internet routing tables. Of the answers, only 200.1.0.0 255.255.0.0 summarizes multiple networks.
3. B and E. RFC 1918 identifies private network numbers. It includes Class A network 10.0.0.0, Class B networks 172.16.0.0 through 172.31.0.0, and Class C networks ...
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