Cisco 100-105 Exam

Including the address on the Router1 Ethernet interface, how many hosts can have IP addresses on the LAN to which Router1 is connected?

  • A. 6
  • B. 14
  • C. 62
  • D. 126
Answer: Option B.

The mask address of interface Fa0/1 of Router1 is /28, which has four 0 bits (1111 1111.1111 1111.1111 1111.1111 0000). Therefore, there are 24 2 = 14 assignable IP addresses for hosts on the LAN.

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