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  • Question
  • The network with ip address 192.168.100.0/27 is to be used on a router. If ip subnet-zero is configured, which statement describe the resulting number of available subnets and hosts?


  • Options
  • A. 7 usable subnets, each with 32 host addresses
  • B. 8 usable subnets, each with 30 host addresses
  • C. 8 usable subnets, each with 27 host addresses
  • D. 7 usable subnets, each with 24 host addresses

  • Correct Answer
  • 8 usable subnets, each with 30 host addresses 

    Explanation

    Because subnet zero is configured and we have a class C address (192.168.100.0) then the network portion will have 3 bits so 8 subnets will be available. The rest of the bits, 5, represent the available hosts, so 2^5=32, but only 30 are available, 0 ad 31 are network and broadcast respectively.


  • CISCO Certification problems


    Search Results


    • 1. Mention different memories used in a CISCO router ?
    • Discuss
    • 2. What are the typical three different categories of VPNs?
    • Discuss
    • 3. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
    • Discuss
    • 4. Which process ensures that the components of the computer are connected properly ?

    • Options
    • A. Booting
    • B. Saving
    • C. Processing
    • D. Editing
    • Discuss
    • 5. You have a Class B network and need 29 subnets. What is your mask?
    • Discuss
    • 6. What command will permit SMTP mail to only host 1.1.1.1?

    • Options
    • A. access-list 10 permit smtp host 1.1.1.1
    • B. access-list 110 permit ip smtp host 1.1.1.1
    • C. access-list 10 permit tcp any host 1.1.1.1 eq smtp
    • D. access-list 110 permit tcp any host 1.1.1.1 eq smtp
    • Discuss
    • 7. What is the first thing that BGP checks to determine if a prefix is accessible?
    • Discuss
    • 8. Routers operate at layer _____. LAN switches operate at layer ______. Ethernet hubs operate at layer _____. Word processing operates at layer _______.

    • Options
    • A. 3, 3, 1, 7
    • B. 3, 2, 1, none
    • C. 3, 2, 1, 7
    • D. 3, 3, 2, none
    • Discuss
    • 9. Which layer is responsible for keeping the data from different applications seperate on the network?
    • Discuss
    • 10. A router has learned three possible routes that could be used to reach a destination network. One route is from EIGRP and has a composite metric of 20684570. Another route is from OSPF with a metric of 852. The last is from RIPv2 and has a metric of 4. Which route or routes will the router install in the routing table? A. the OSPF route B. the EIGRP route C. the RIPv2 route D. all three routes E. the OSPF and RIPv2 routes
    • Discuss


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