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