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  • Question
  • If you want to disable STP on a port connected to a server, which command would you use?


  • Options
  • A. disable spanning-tree
  • B. spanning-tree off
  • C. spanning-tree security
  • D. spanning-tree portfast

  • Correct Answer
  • spanning-tree portfast 

    Explanation

    If you have a server or other devices connected into your switch that you're totally sure won't create a switching loop if STP is disabled, you can use something called portfast on these ports. Using it means the port won't spend the usual 50 seconds to come up while STP is converging.


  • CISCO Certification problems


    Search Results


    • 1. What does the command confreg 0x2142 provide?

    • Options
    • A. It is used to restart the router
    • B. It is used to bypass the configuration in NVRAM
    • C. It is used to enter ROM monitor mode
    • D. It is used to view the lost password
    • Discuss
    • 2. You want to implement a mechanism that automates the IP configuration, including IP address, subnet mask, default gateway, and DNS information. Which protocol will you use to accomplish this?

    • Options
    • A. SMTP
    • B. SNMP
    • C. DHCP
    • D. ARP
    • Discuss
    • 3. Which two descriptions are correct about characteristics of IPv6 unicast addressing? (Choose two) A. Global addresses start with 2000::/3. B. Link-local addresses start with FF00::/10. C. Link-local addresses start with FE00:/12. D. There is only one loopback address and it is ::1.
    • Discuss
    • 4. A default Frame Relay WAN is classified as what type of physicalnetwork? A: broadcast point-to-multi point B: broadcast multi-access C: non broadcast multi-access D: non broadcast multi-point
    • Discuss
    • 5. Convert the following from binary format to decimal IP address. 11001100.00110011.10101010.01010101
    • Discuss
    • 6. Which of the following describes the creation of private networks across the Internet, enabling privacy and tunneling of non-TCP/IP protocols?

    • Options
    • A. HDLC
    • B. Cable
    • C. VPN
    • D. IPSec
    • Discuss
    • 7. Explain the difference between the forwarding of a unicast IP packet and the forwarding of a multicast IP packet.
    • Discuss
    • 8. What are the purposes of areas in an OSPF network?
    • Discuss
    • 9. What are the six OSPF route types?
    • Discuss
    • 10. What port number is used for DHCP?

    • Options
    • A. 67
    • B. 68
    • C. 69
    • D. Both A and B
    • Discuss


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