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Chapter 3

  • IP Subnetting and Variable Length Subnet Masks (VLSMs)

Review Questions

  • 1.

    What is the subnetwork number of a host with an IP address of 172.16.210.0/22?

    • A.

      172.16.42.0

    • B.

      172.16.107.0

    • C.

      172.16.208.0

    • D.

      172.16.252.0

    • E.

      172.16.254.0

  • 2.

    Which of the following IP addresses fall into the CIDR block of 115.64.4.0/22? (Choose three.)

    • A.

      115.64.8.32

    • B.

      115.64.7.64

    • C.

      115.64.6.255

    • D.

      115.64.3.255

    • E.

      115.64.5.128

    • F.

      115.64.12.128

  • 3.

    What is the subnetwork address for a host with the IP address 200.10.5.68/28?

    • A.

      200.10.5.56

    • B.

      200.10.5.32

    • C.

      200.10.5.64

    • D.

      200.10.5.0

  • 4.

    The network address of 172.16.0.0/19 provides how many subnets and hosts?

    • A.

      7 subnets, 30 hosts each

    • B.

      7 subnets, 2046 hosts each

    • C.

      7 subnets, 8190 hosts each

    • D.

      8 subnets, 30 hosts each

    • E.

      8 subnets, 2046 hosts each

    • F.

      8 subnets, 8190 hosts each

  • 5.

    You need 500 subnets, each with about 100 usable host addresses per subnet. What mask will you assign using a Class B network address?

    • A.

      255.255.255.252

    • B.

      255.255.255.128

    • C.

      255.255.255.0

    • D.

      255.255.254.0

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