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You have an interface on a router with the IP address of 192.168.192.10/29. Including the router interface, how many hosts can have IP addresses on the LAN attached to the router interface?

  • A.6
  • B.8
  • C.30
  • D.32

Answer: A

Correct answer: 6

A /29 leaves three host bits, so \[ 2^{3} - 2 = 8 - 2 = 6 \] usable addresses - the block of eight less the subnet address and the broadcast. The router interface is one of the six, so five hosts may join it. The 8 offered is the block size before those two are removed.

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