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Chapter 3

  • IP Subnetting and Variable Length Subnet Masks (VLSMs)

  • 11.

    Which of the following IP addresses fall into the CIDR block of 110.68.4.0/18? (Choose three.)

    • A.

      110.68.8.32

    • B.

      110.68.7.64

    • C.

      110.67.6.255

    • D.

      110.66.3.254

    • E.

      110.65.5.128

    • F.

      110.64.12.128

  • 12.

    You have the network shown in the following graphic. Which subnet mask do you need in order

to design and implement this network in a classful manner?

Corporate 7 users

LA

SF

NY

WY

15 users

13 users

7 users

16 users

    • A.

      255.255.255.192

    • B.

      255.255.255.224

    • C.

      255.255.255.240

    • D.

      255.255.255.248

  • 13.

    You need a minimum of 300 subnets with a maximum of 50 hosts per subnet. Which of the following masks will support the business requirements? (Choose two.)

    • A.

      255.255.255.0

    • B.

      255.255.255.128

    • C.

      255.255.252.0

    • D.

      255.25.255.224

    • E.

      255.255.255.192

    • F.

      255.255.248.0

  • 14.

    If an Ethernet port on a router were assigned an IP address of 172.16.112.1/25, what would be the valid subnet address of this host?

    • A.

      172.16.112.0

    • B.

      172.16.0.0

    • C.

      172.16.96.0

    • D.

      172.16.255.0

    • E.

      172.16.128.0

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