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  • Question
  • 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

  • Correct Answer
  • 2 and 4 

    Explanation
    The mask 255.255.254.0 (/23) used with a Class A address means that there are 15 subnet bits and 9 host bits. The block size in the third octet is 2 (256 - 254). So this makes the subnets in the interesting octet 0, 2, 4, 6, etc., all the way to 254. The host 10.16.3.65 is in the 2.0 subnet. The next subnet is 4.0, so the broadcast address for the 2.0 subnet is 3.255. The valid host addresses are 2.1 through 3.254.

  • More questions

    • 1. Which of the following encapsulates PPP frames in Ethernet frames and uses common PPP features like authentication, encryption, and compression?

    • Options
    • A. PPP
    • B. PPPoA
    • C. PPPoE
    • D. Token Ring
    • Discuss
    • 2. What flavor of Network Address Translation can be used to have one IP address allow many users to connect to the global Internet?

    • Options
    • A. NAT
    • B. Static
    • C. Dynamic
    • D. PAT
    • Discuss
    • 3. What is the frequency range of the IEEE 802.11g standard?

    • Options
    • A. 2.4Gbps
    • B. 5Gbps
    • C. 2.4GHz
    • D. 5GHz
    • Discuss
    • 4. Which class of IP address has the most host addresses available by default?

    • Options
    • A. A
    • B. B
    • C. C
    • D. A and B
    • Discuss
    • 5. How many non-overlapping channels are available with 802.11a?

    • Options
    • A. 3
    • B. 12
    • C. 23
    • D. 40
    • Discuss
    • 6. You have the following routing table. Which of the following networks will not be placed in the neighbor routing table?
      R    192.168.30.0/24 [120/1] via 192.168.40.1, 00:00:12, Serial0
      C    192.168.40.0/24 is directly connected, Serial0
           172.16.0.0/24 is subnetted, 1 subnets
      C    172.16.30.0 is directly connected, Loopback0
      R    192.168.20.0/24 [120/1] via 192.168.40.1, 00:00:12, Serial0
      R    10.0.0.0/8 [120/15] via 192.168.40.1, 00:00:07, Serial0
      C    192.168.50.0/24 is directly connected, Ethernet0

    • Options
    • A. 172.16.30.0
    • B. 192.168.30.0
    • C. 10.0.0.0
    • D. All of them will be placed in the neighbor routing table.
    • Discuss
    • 7. You have created a named access list called Blocksales. Which of the following is a valid command for applying this to packets trying to enter interface s0 of your router?

    • Options
    • A. (config)# ip access-group 110 in
    • B. (config-if)# ip access-group 110 in
    • C. (config-if)# ip access-group Blocksales in
    • D. (config-if)# blocksales ip access-list in
    • Discuss
    • 8. What multicast addresses does RIPng use?

    • Options
    • A. FF02::A
    • B. FF02::9
    • C. FF02::5
    • D. FF02::6
    • Discuss
    • 9. What is the maximum distance running the lowest data rate for 802.11a?

    • Options
    • A. About 100 feet
    • B. About 175 feet
    • C. About 300 feet
    • D. About 350 feet
    • Discuss
    • 10. Which of the following is considered to be the destination host before translation?

    • Options
    • A. Inside local
    • B. Outside local
    • C. Inside global
    • D. Outside global
    • Discuss


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