Module 4 – Exam 1. Which of the following statements is TRUE in regards to RSTP topology changes? When a switch running RSTP detects a topology change, it immediately sends BPDUs out of all edge ports with the TC bit set and begins the TC While timer A topology change is initiated only when any port transitions to the Forwarding state A topology change is initiated only when an edge port transitions to the Forwarding state A topology change is initiated only when a non-edge port transitions to the Forwarding state Question 1 of 21 2. Which of the following configuration commands is required to begin the configuration of MSTP on the switch? Switch-2(config)#spanning-tree mstp configuration Switch-2(config)#spanning-tree configuration mst Switch-2(config)#spanning-tree mst configuration Switch-2(config-vlan)#spanning-tree mst configuration Switch-2(config-vlan)#spanning-tree mstp configuration Switch-2(config-mst)#spanning-tree mst configuration Question 2 of 21 3. During RSTP Synchronization, what happens when the RTSP-enabled switch receives an 802.1D BPDU? The switch defaults back to traditional STP operation and starts the Forward Delay timer for the port RSTP sets the port to the Blocking state The switch continues sending BPDUs with the proposal flag set until the Forward Delay timer expires The switch does sets the proposal flag The switch immediately replies with its own information in a proposal Question 3 of 21 4. When running RSTP, what happens when a port connected to another switch does not receive a BPDU in 6 seconds? The switch generates a TCN BPDU The Max Age timer begins to decrement and the information is aged out when this timer goes to 0 The port information is invalidated (aged out) The switch sends out a Configuration BPDU of its own Question 4 of 21 5. Which statements are FALSE in regards to the RSTP BPDU? The Message Age NOT Maximum Age is used to age out information Only two Flags are defined in the IEEE 802.1w standard The BPDU Type fields are now set to a value of 2, instead of the value 0 BPDU Type fields are now set to a value of 0, instead of the value 2 BPDU are sent every Hello Time (which is 2 seconds by default) With the 802.1w standard, switches now send a BPDU only if they receive BPDUs from the Root Bridge Question 5 of 21 6. What port states are used in RSTP Learning Blocking Discarding Listening Forwarding Question 6 of 21 7. What MSTP mechanism is used to determine when to trigger a reconfiguration? The Maximum (Max) Age The IP TTL The M-Record The Hop Count The Message Age Question 7 of 21 8. Which of the following statements are FALSE in regards to MSTP and RSTP? Each switch must be capable of processing RSTP BPDUs in order to support MST MSTP and RSTP have completely different BPDU formats Each switch does not need to be capable of processing RSTP BPDUs in order to support MST RSTP must be manually enabled when MSTP is enabled RSTP is automatically enabled when MSTP is enabled MSTP and RSTP share a similar BPDU format Question 8 of 21 9. Which of the following is TRUE in regards to the configuration of MSTP? When MSTP is enabled, all switches use 802.1Q (CST) by default When MSTP is enabled, all switches use PVST+ by default All switches must be manually configured when implementing MSTP Once configured on the Root Bridge, the configuration is propagated to all other switches Once configured on the VTP server, the configuration is propagated to all other switches Question 9 of 21 10. Which of the following statements are TRUE in regards to MSTP Instances? Cisco Catalyst switches support up to 15 MSTIs on a single switch MSTIs are the only Instances that sends and receives BPDUs. All other Spanning Tree Instance information is contained in M-records The IST is the only Instance that sends and receives BPDUs. All other Spanning Tree Instance information is contained in M-records MST Instance 0 is mandatory and is always present Cisco Catalyst switches support up to 16 MSTIs on a single switch MST Instance 1 is mandatory and is always present The MST Region sees the outside world via IST interaction The MST Region sees the outside world via MSTI interaction Question 10 of 21 11. Which of the following statements are TRUE in regards to MST Regions? An MST Region consists of a two different components, which are edge ports and shared ports An MST Region defines a boundary within which multiple instances of Spanning Tree operate An MST Region defines a boundary within which a single instance of Spanning Tree operates An MST Region consists of a two different components, which are edge ports and boundary ports An MST Region consists of a two different components, which are trunk ports and boundary ports Question 11 of 21 12. Which of the following runs a single instance of STP for each individual VLAN? CST PVST+ MSTP RSTP Question 12 of 21 13. Which of the following runs a single Spanning Tree instance for all VLANs configured on the switch? PVST+ CST RSTP MSTP Question 13 of 21 14. When does a switch running RSTP set the proposal bit in a BPDU? When an edge port is in a discarding or learning state When a backup port is in a discarding or learning state When a root port is in a discarding or learning state When an alternate port is in a discarding or learning state When a designated port is in a discarding or learning state Question 14 of 21 15. Click on the Exhibit. RSTP is enabled on the switch. What can be determined from this output? The port is connected to another switch running RSTP The port is operating in Half-Duplex Mode The port is operating in Full-Duplex mode The port is a trunk port Question 15 of 21 16. What happens when an RSTP edge port receives a BPDU? Edge ports have PortFast enabled and cannot receive BPDUs It is placed into an err-disabled state The switch generates a TCN BPDU It becomes a normal STP port The port is placed into a blocking state Question 16 of 21 17. MST configuration must be same on all switches in the same MST region. This includes the following three user-configured parameters? Region Name Revision Number Cisco IOS Software Version Catalyst Switch Platform Type VLAN Instance Mapping The Enable Secret Question 17 of 21 18. What happens when a switch running 802.1D receives an RSP BPDU? The switch responds with a proposal 802.1D and 802.1w are incompatible; the switch will generate an error message The switch responds with an agreement The BPDU is dropped Question 18 of 21 19. What Spanning Tree enhancements are included in RSTP? Uplink Fast Backbone Fast BPDU Guard PortFast Loop Guard Root Guard BPDU Filter Question 19 of 21 20. Which of the following statements about MSTP Regions are FALSE? The MST Region name is NOT case-sensitive Switches can belong to multiple Regions There can only be up to 32 Regions in the network The MST Region name is case-sensitive Switches can belong to only a single Region There is no limit to the number of Regions that can exist Question 20 of 21 21. Click on the Exhibit. Which of the following statements are TRUE in regards to this configuration? All other VLANs not explicity mapped to a particular instance will be disabled VLAN 40 will be mapped to MST Instance 2 VLAN 100 and VLAN 110 will be mapped to MST Instance 6 VLAN 11 will be mapped to MST00 All other VLANs not explicity mapped to an MSTI will default to Instance 0 Question 21 of 21 Loading…
