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Home Networking Subnetting Comments

  • Question
  • Your router has the following IP address on Ethernet0: 172.16.2.1/23. Which of the following can be valid host IDs on the LAN interface attached to the router?

    1. 172.16.1.100
    2. 172.16.1.198
    3. 172.16.2.255
    4. 172.16.3.0


  • Options
  • A. 1 only
  • B. 2 and 3 only
  • C. 3 and 4 only
  • D. None of the above

  • Correct Answer
  • 3 and 4 only 

    Explanation
    The router's IP address on the E0 interface is 172.16.2.1/23, which is 255.255.254.0. This makes the third octet a block size of 2. The router's interface is in the 2.0 subnet, and the broadcast address is 3.255 because the next subnet is 4.0. The valid host range is 2.1 through 3.254. The router is using the first valid host address in the range.

  • Subnetting problems


    Search Results


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

    • Options
    • A. 7 subnets, 30 hosts each
    • B. 8 subnets, 8,190 hosts each
    • C. 8 subnets, 2,046 hosts each
    • D. 7 subnets, 2,046 hosts each
    • Discuss
    • 2. Using the following illustration, what would be the IP address of E0 if you were using the eighth subnet? The network ID is 192.168.10.0/28 and you need to use the last available IP address in the range. The zero subnet should not be considered valid for this question.

    • Options
    • A. 192.168.10.142
    • B. 192.168.10.66
    • C. 192.168.100.254
    • D. 192.168.10.143
    • E. 192.168.10.126
    • Discuss
    • 3. Which two statements describe the IP address 10.16.3.65/23?

      1. The subnet address is 10.16.3.0 255.255.254.0.
      2. The lowest host address in the subnet is 10.16.2.1 255.255.254.0.
      3. The last valid host address in the subnet is 10.16.2.254 255.255.254.0.
      4. The broadcast address of the subnet is 10.16.3.255 255.255.254.0.

    • Options
    • A. 1 and 3
    • B. 2 and 4
    • C. 1, 2 and 4
    • D. 2, 3 and 4
    • Discuss
    • 4. Which of the following types of connections can use full duplex?

      1. Hub to hub
      2. Switch to switch
      3. Host to host
      4. Switch to hub
      5. Switch to host

    • Options
    • A. 1, 2 and 4
    • B. 3 and 4
    • C. 3 and 5
    • D. 2, 3 and 5
    • Discuss
    • 5. Acknowledgments, sequencing, and flow control are characteristics of which OSI layer?

    • Options
    • A. Layer 2
    • B. Layer 3
    • C. Layer 4
    • D. Layer 7
    • Discuss
    • 6. 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?

    • Options
    • A. 6
    • B. 8
    • C. 30
    • D. 32
    • Discuss
    • 7. To test the IP stack on your local host, which IP address would you ping?

    • Options
    • A. 127.0.0.0
    • B. 1.0.0.127
    • C. 127.0.0.1
    • D. 127.0.0.255
    • Discuss
    • 8. What is the subnetwork address for a host with the IP address 200.10.5.68/28?

    • Options
    • A. 200.10.5.56
    • B. 200.10.5.32
    • C. 200.10.5.64
    • D. 200.10.5.0
    • Discuss
    • 9. What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the 255.255.255.224 subnet mask?

    • Options
    • A. 14
    • B. 15
    • C. 16
    • D. 30
    • Discuss
    • 10. You need to subnet a network that has 5 subnets, each with at least 16 hosts. Which classful subnet mask would you use?

    • Options
    • A. 255.255.255.192
    • B. 255.255.255.224
    • C. 255.255.255.240
    • D. 255.255.255.248
    • Discuss


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