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networking week 13 semester 2

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  • Which STP feature allows host ports to bypass normal STP states for faster connection?
    Root Guard
    PortFast
    BPDU Guard
  • Which command verifies active NAT translations?
    show interfaces
    show running-config nat
    show ip nat translations
    debug ip routing
  • Which of the following is not an advantage of NAT?
    Increases network flexibility
    Provides faster routing performance
    Hides internal addresses for security
    Conserves IPv4 addresses
  • What happens when a BPDU is received on a PortFast-enabled interface with BPDU Guard active?
    The switch disables STP entirely
    The port is placed in an errdisable state
    The BPDU is ignored and dropped
  • What is the purpose of port forwarding?
    Hide private addresses from internal users
    Share public IP addresses between ISPs
    Allow external users to reach internal services
    Enable dynamic DNS
  • Which NAT address represents the private IP before translation?
    Outside global address
    Inside local address
    Inside global address
    outside local address
  • Which command is used to mark an interface as inside for NAT?
    ip inside enable
    interface nat private
    ip nat inside
    nat-interface
  • Where is NAT usually configured?
    DNS server
    Access switch
    border or edge router
    End user workstation
  • Which statement best describes Static NAT?
    One private IP is mapped to one public IP
    Public IPs assigned randomly
    One public IP mapped to multiple private IPs
    Many private IPs mapped to one public IP
  • How is the Root Bridge selected in an STP topology?
    The first switch powered on becomes the root
    The switch with the lowest Bridge ID becomes the root
    The switch with the highest MAC address becomes the root
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