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4A0-101 · Question #135

What is the primary purpose of classless interdomain routing (CIDR)?

The correct answer is B. To allow IP routes to be defined using any number of bits for the network portion of the address. See the full explanation below for the reasoning.

Question

What is the primary purpose of classless interdomain routing (CIDR)?

Options

  • ATo support classful routing protocols.
  • BTo allow IP routes to be defined using any number of bits for the network portion of the address.
  • CTo allow interdomain routing between an IGP and EGP such as OSPF and BGP.
  • DTo simplify the allocation of IP address space by defining a fixed size for the network portion of

How the community answered

(26 responses)
  • A
    15% (4)
  • B
    73% (19)
  • C
    4% (1)
  • D
    8% (2)

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