WorksheetsSTP Module Quiz
Total questions: 33
Worksheet time: 17mins
Which port state will switch ports immediately transition to when configured for PortFast?
forwarding
blocking
learning
listening
After the election of the root bridge has been completed, how will switches find the best paths to the root bridge?
Analyze the BID of all neighbors
Analyze the sum of the hops
Analyze the sum of all port costs
Analyze port states of all neighbors
Which is the default STP operation mode on Cisco Catalyst switches?
MST
PVST+
Rapid PVST+
RSTP
What value determines the root bridge when all switches connected by trunk links have default STP configurations?
MAC address
bridge priority
VLAN ID
extended system ID
What is the first step of the spanning-tree election process after all switches are rebooted?
Lower root ID will not send BPDUs
Determine what port to block
Determine the best path
Send out BPDUs
Which two concepts relate to a switch port that is intended to have only end devices attached? (Choose two.)
PVST+
edge port
PortFast
bridge ID
Which three port states are used by Rapid PVST+? (Choose three.)
listening
discarding
blocking
trunking
When PVST is running over a switched network, which port state can participate in BPDU frame forwarding but does not forward data frames?
listening
forwarding
blocking
disabled
Which STP port role is adopted by a switch port if there is no other port with a lower cost to the root bridge?
root port
disabled port
alternate
designated port
Which two statements describe a switch port that is configured with PortFast? (Choose two.)
Transitions from listening to forwarding
Transitions from blocking to forwarding
Processes BPDUs before forwarding
Sends DHCP requests before forwarding
What is one way to correct a spanning tree failure?
Remove redundant links
Replace cables on failed links
Insert redundant links
Replace STP with RSTP
What additional information is contained in the 12-bit extended system ID of a BPDU?
VLAN ID
port ID
MAC address
IP address
An administrator is troubleshooting a switch and wants to verify if it is a root bridge. What command can be used?
show running-config
show spanning-tree
show startup-config
show vlan
What is an accurate description of redundancy?
Using multiple virtual devices
Configuring a complete MAC address database
Using multiple paths between switches
Configuring proper security
Which three components are combined to form a bridge ID? (Choose three.)
Extended system ID
Bridge priority
IP address
Cost
What is an advantage of PVST+?
Requires fewer CPU cycles
Reduces bandwidth consumption
Optimizes performance through load sharing
Optimizes performance through automatic selection
In which two port states does a switch learn MAC addresses and process BPDUs in a PVST network? (Choose two.)
Blocking
Disabled
Learning
Forwarding
What two features does Spanning Tree Protocol (STP) provide to ensure proper network operations? (Choose two.)
Removing single points of failure
Implementing VLANs
Redundant links between switches
Link-state dynamic routing
Which PVST+ feature ensures that configured switch edge ports do not cause Layer 2 loops?
BPDU guard
PVST+
PortFast
Extended system ID
What is an advantage of using STP in a LAN?
Temporarily disables redundant paths
Decreases the size of the failure domain
Combines multiple switch trunk links
Provides firewall services
Which two statements regarding a PortFast enabled switch port are true? (Choose two.)
Should never receive BPDUs
Transitions from blocking to forwarding
Transitions from listening to forwarding
Processes BPDUs before forwarding
What is the purpose of the extended system ID in a BPDU?
To identify the VLAN ID
To identify the bridge priority
To identify the port ID
To identify the MAC address
Which command displays STP root bridge information?
show interfaces
show ip route
show spanning-tree
show mac address-table
What happens when a BPDU is received on a PortFast enabled port?
Port transitions to blocking state
Port continues to forward frames
Port goes into error-disabled state
Port resets configuration
Which protocol helps prevent loops in a network with redundant paths?
STP
RIP
OSPF
EIGRP
What is the role of a root port in STP?
Port with the highest cost
Port that forwards all traffic
Port with the lowest cost to the root bridge
Port that blocks traffic
Which command would you use to view the STP status on a switch?
show ip interface
show running-config
show spanning-tree
show version
What is the main function of STP?
To manage IP addresses
To prevent Layer 2 loops
To configure VLANs
To monitor network traffic
Which port state does not forward data frames in STP?
Listening
Blocking
Learning
Forwarding
What is the purpose of the bridge priority in STP?
To configure port states
To manage MAC addresses
To identify VLANs
To determine the root bridge
Which feature allows a switch port to immediately transition to the forwarding state?
STP
BPDU guard
PortFast
VLAN
What does the term 'edge port' refer to in STP?
A port connected to an end device
A port that blocks traffic
A port that forwards all traffic
A port connected to another switch
What is the effect of enabling BPDU guard on a switch port?
Prevents loops
Disables the port if a BPDU is received
Allows all traffic
Enables PortFast
