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New CCNA – Show commands

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  • New CCNA – Show commands

    Question 1

    Refer to the exhibit. The two exhibited devices are the only Cisco devices on the network. The serial network between the two devices has a mask of 255.255.255.252. Given the output that is shown, what three statements are true of these devices? (Choose three)


    A. The Manchester serial address is 10.1.1.1.
    B. The Manchester serial address is 10.1.1.2.
    C. The London router is a Cisco 2610.
    D. The Manchester router is a Cisco 2610.
    E. The CDP information was received on port Serial0/0 of the Manchester router.
    F. The CDP information was sent by port Serial0/0 of the London router.

    Answer: A C E

    Explanation

    From the output, we learn that the IP address of the neighbor router is 10.1.1.2 and the question stated that the subnet mask of the network between two router is 255.255.255.252. Therefore there are only 2 available hosts in this network (22 – 2 = 2). So we can deduce the ip address (of the serial interface) of Manchester router is 10.1.1.1 -> A is correct
    The platform of the neighbor router is cisco 2610, as shown in the output -> C is correct
    Maybe the most difficult choice of this question is the answer E or F. Please notice that “Interface” refers to the local port on the local router, in this case it is the port of Manchester router, and “Port ID (outgoing port)” refers to the port on the neighbor router -> E is correct.

    Question 2

    Which command reveals the last method used to powercycle a router?
    A. show reload
    B. show boot
    C. show running-config
    D. show version


    Answer: D

    Explanation

    The “show version” command can be used to show the last method to powercycle (reset) a router


    Question 3

    When you are troubleshooting an ACL issue on a router, which command would you use to verify which interfaces are affected by the ACL?
    A. show ip access-lists
    B. show access-lists
    C. show interface
    D. show ip interface
    E. list ip interface



    Answer: D
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