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What are some limitations of classful subnetworking?
Only subnet the major network once, all subnets must be of equivalent size
T/F: Only one subnet is reserved for each classful subnet
False, two
All 0 host ID is the subnetwork ID and the All 1 host ID is the broadcast
True
What is Variable Length Subnet Mask (VLSM)?
Eliminates some limitations of fixed length subnetting and provides more granular control of network address space.
What is Classless InterDomain Routing (CIDR)?
No consideration for address classes, provides more granular control of network address, and introduces the idea of supernetting.
What are the two options for space allocation when subnetting?
Minimize the host space/maximize subnet space or minimize the subnet space/maximize the host space