Module 4 – Exam 1. 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 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 An MST Region consists of a two different components, which are trunk ports and boundary ports Question 1 of 21 2. 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 designated port is in a discarding or learning state When a backup 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 2 of 21 3. What happens when a switch running 802.1D receives an RSP BPDU? The switch responds with a proposal The switch responds with an agreement The BPDU is dropped 802.1D and 802.1w are incompatible; the switch will generate an error message Question 3 of 21 4. 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 The switch immediately replies with its own information in a proposal 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 does sets the proposal flag Question 4 of 21 5. Which of the following statements are TRUE in regards to MSTP Instances? The MST Region sees the outside world via IST interaction 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 MST Instance 1 is mandatory and is always present 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 0 is mandatory and is always present The MST Region sees the outside world via MSTI interaction Question 5 of 21 6. What happens when an RSTP edge port receives a BPDU? The port is placed into a blocking state It is placed into an err-disabled state It becomes a normal STP port Edge ports have PortFast enabled and cannot receive BPDUs The switch generates a TCN BPDU Question 6 of 21 7. What port states are used in RSTP Forwarding Discarding Listening Blocking Learning Question 7 of 21 8. 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 Max Age timer begins to decrement and the information is aged out when this timer goes to 0 The switch generates a TCN BPDU The port information is invalidated (aged out) Question 8 of 21 9. Which of the following statements are FALSE in regards to MSTP and RSTP? MSTP and RSTP have completely different BPDU formats 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 Each switch does not need to be capable of processing RSTP BPDUs in order to support MST 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 Half-Duplex Mode The port is a trunk port The port is connected to another switch running RSTP The port is operating in Full-Duplex mode Question 10 of 21 11. Which of the following is TRUE in regards to the configuration of MSTP? 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 Once configured on the VTP server, the configuration is propagated to all other switches When MSTP is enabled, all switches use 802.1Q (CST) by default Question 11 of 21 12. What Spanning Tree enhancements are included in RSTP? Backbone Fast Root Guard BPDU Filter BPDU Guard Uplink Fast Loop Guard PortFast Question 12 of 21 13. 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 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 Question 13 of 21 14. 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 Catalyst Switch Platform Type Region Name VLAN Instance Mapping Revision Number Question 14 of 21 15. Which of the following statements about MSTP Regions are FALSE? There is no limit to the number of Regions that can exist The MST Region name is NOT case-sensitive Switches can belong to multiple Regions Switches can belong to only a single Region There can only be up to 32 Regions in the network The MST Region name is case-sensitive Question 15 of 21 16. Which of the following runs a single Spanning Tree instance for all VLANs configured on the switch? MSTP CST PVST+ RSTP Question 16 of 21 17. Which statements are FALSE in regards to the RSTP BPDU? 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) The Message Age NOT Maximum Age is used to age out information Only two Flags are defined in the IEEE 802.1w standard 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 Question 17 of 21 18. What MSTP mechanism is used to determine when to trigger a reconfiguration? The Hop Count The Maximum (Max) Age The M-Record The Message Age The IP TTL Question 18 of 21 19. Click on the Exhibit. Which of the following statements are TRUE in regards to this configuration? VLAN 100 and VLAN 110 will be mapped to MST Instance 6 All other VLANs not explicity mapped to an MSTI will default to Instance 0 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 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-mst)#spanning-tree mst configuration Switch-2(config)#spanning-tree mstp configuration Switch-2(config-vlan)#spanning-tree mstp configuration Switch-2(config)#spanning-tree mst configuration Question 20 of 21 21. Which of the following runs a single instance of STP for each individual VLAN? RSTP PVST+ CST MSTP Question 21 of 21 Loading…
