WorksheetsSTP Features (SRWE Module 5)
Total questions: 18
Worksheet time: 9mins
Purpose of the BackboneFast feature in Cisco switches
To detect a link failure and transition a port the the forwarding state quickly
To detect indirect topology changes and recover from link failures quickly
To prevent a switch from becoming a root bridge in a network
To disable a port if it stops receiving BPDUs to prevent a loop
Purpose of the UplinkFast feature in Cisco switches
To detect a link failure and transition a port the the forwarding state quickly
To detect indirect topology changes and recover from link failures quickly
To prevent a switch from becoming a root bridge in a network
To disable a port if it stops receiving BPDUs to prevent a loop
Purpose of the RootGuard feature in Cisco switches
To detect a link failure and transition a port the the forwarding state quickly
To detect indirect topology changes and recover from link failures quickly
To prevent a switch from becoming a root bridge in a network
To disable a port if it stops receiving BPDUs to prevent a loop
Purpose of the LoopGuard feature in Cisco switches
To detect a link failure and transition a port the the forwarding state quickly
To detect indirect topology changes and recover from link failures quickly
To prevent a switch from becoming a root bridge in a network
To disable a port if it stops receiving BPDUs to prevent a loop
Which command is used to enable Loop Guard globally on a Cisco switch?
spanning-tree guard root
spanning-tree loopguard default
spanning-tree guard loop
spanning-tree uplinkfast
What does the BPDU Filter feature do in a network?
It prevents BPDUs from being transmitted or received
It blocks unauthorized devices from accessing the network
It increases the speed of BPDU transmission
It allows BPDUs to be transmitted but not received
Which command is used to configure Loop Guard on an interface level?
spanning-tree guard root
spanning-tree loopguard default
spanning-tree guard loop
spanning-tree uplinkfast
What is the main difference between BPDU Filter and BPDU Guard?
BPDU Filter puts the port in err-disabled mode, BPDU Guard enables traffic to still transmit.
BPDU Guard puts the port in err-disabled mode, BPDU Filter enables traffic to still transmit and ignores the BPDU.
BPDU Filter increases transmission speed, while BPDU Guard decreases it.
BPDU Filter is used for wireless networks, while BPDU Guard is for wired networks.
Which feature protects Layer 2 networks from loops if a switch stops receiving BPDUs from its neighbor?
BackboneFast
UplinkFast
Root Guard
Loop Guard
What is the command to prevent a switch from becoming a root bridge?
spanning-tree guard root
spanning-tree loopguard default
spanning-tree guard loop
spanning-tree uplinkfast
Which feature is specifically designed to help a switch recover from link failures more quickly?
BackboneFast
UplinkFast
Root Guard
Loop Guard
Which of the following disables spanning tree and could result in a looping?
BPDU filter
BPDU guard
BackboneFast
Root guard
When a BPDU is received on a port configured with STP portfast, the port will go into err-disable mode.
BPDU filter
BPDU guard
BackboneFast
Root guard
What STP optional feature blocks a port if it receives superior BPDUs?
BPDU Guard
BPDU Filter
Root Guard
Loop Guard
Which command makes a switch port stop sending BPDUs and ignore any BPDUs it receives?
spanning-tree bpdufilter enable
spanning-tree portfast bpdufilter default
spanning-tree bpduguard enable
spanning-tree portfast bpduguard default
What happens if a PortFast-enabled port receives an STP BPDU?
The port is err-disabled
The port ignores the BPDU
The port functions as a normal STP port
The port enters the STP blocking state
If you configure "spanning-tree portfast default" in global config mode, which ports are PortFast enabled on?
all routed ports
all access and trunk ports
all access ports
all trunk ports
What is a superior BPDU?
lower BID
higher BID
