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