Module 5-6 Exam
What is the purpose of the Spanning Tree Protocol (STP)? A: prevents Layer 2 loops B: creates smaller collision domains C: allows Cisco devices to exchange routing table updates D: prevents routing loops on a router E: creates smaller broadcast domains
A
Which statement describes a characteristic of EtherChannel? A: It is made by combining multiple physical links that are seen as one link between two switches. B: It can combine up to a maximum of 4 physical links. C: It consists of multiple parallel links between a switch and a router. D: It can bundle mixed types of 100 Mb/s and 1Gb/s Ethernet links.
A
Which two channel group modes would place an interface in a negotiating state using PAgP? (Choose two.) A: auto B: desirable C: passive D: on E: active
A and B
In which two PVST+ port states are MAC addresses learned? (Choose two.) A: learning B: listening C: forwarding D: blocking E: disabled
A and C
A switch is configured to run STP. What term describes the reference point for all path calculations? A: root bridge B: disabled C: root port D: designated port
A
In which two port states does a switch learn MAC addresses and process BPDUs in a PVST network? (Choose two.) A: forwarding B: disabled C: learning D: listening E: blocking
A and C
When the show spanning-tree vlan 33 command is issued on a switch, three ports are shown in the forwarding state. In which two port roles could these interfaces function while in the forwarding state? (Choose two.) A:root B: alternate C: blocked D: disabled E: designated
A and E
If no bridge priority is configured in PVST, which criteria is considered when electing the root bridge? A: highest IP address B: lowest MAC address C: highest MAC address D: lowest IP address
B
Which statement is true regarding the use of PAgP to create EtherChannels? A: It mandates that an even number of ports (2, 4, 6, etc.) be used for aggregation. B: It is Cisco proprietary. C: It increases the number of ports that are participating in spanning tree. D: It requires more physical links than LACP does. E: It requires full duplex.
B
Which technology is an open protocol standard that allows switches to automatically bundle physical ports into a single logical link? A: DTP B: LACP C: Multilink PPP D: PAgP
B
Which two network design features require Spanning Tree Protocol (STP) to ensure correct network operation? (Choose two.) A: static default routes B: removing single points of failure with multiple Layer 2 switches C: redundant links between Layer 2 switches D: implementing VLANs to contain broadcasts E: link-state dynamic routing that provides redundant routes
B and C
A network administrator configured an EtherChannel link with three interfaces between two switches. What is the result if one of the three interfaces is down? A: The EtherChannel fails. B: The remaining two interfaces become separate links between the two switches. C: The remaining two interfaces continue to load balance traffic. D: One interface becomes an active link for data traffic and the other becomes a backup link.
C
A network administrator has configured an EtherChannel between two switches that are connected via four trunk links. If the physical interface for one of the trunk links changes to a down state, what happens to the EtherChannel? A: The EtherChannel will transition to a down state. B: Spanning Tree Protocol will transition the failed physical interface into forwarding mode. C: The EtherChannel will remain functional. D: Spanning Tree Protocol will recalculate the remaining trunk links.
C
A set of switches is being connected in a LAN topology. Which STP bridge priority value will make it least likely for the switch to be selected as the root? A: 65535 B: 4096 C: 61440 D: 32768
C
What is the outcome of a Layer 2 broadcast storm? A: ARP broadcast requests are returned to the transmitting host. B: CSMA/CD will cause each host to continue transmitting frames. C: New traffic is discarded by the switch because it is unable to be processed. D: Routers will take over the forwarding of frames as switches become congested.
C
Which spanning tree standard supports only one root bridge so that traffic from all VLANs flows over the same path? A: MST B: PVST+ C: 802.1D D: Rapid PVST
C
Which two parameters must match on the ports of two switches to create a PAgP EtherChannel between the switches? (Choose two.) A: PAgP mode B: port ID C: speed D: VLAN information E: MAC address
C and D
What are two advantages of EtherChannel? (Choose two.) A: EtherChannel uses upgraded physical links to provide increased bandwidth. B: Spanning Tree Protocol ensures redundancy by transitioning failed interfaces in an EtherChannel to a forwarding state. C: Configuring the EtherChannel interface provides consistency in the configuration of the physical links. D: Load balancing occurs between links configured as different EtherChannels. E: Spanning Tree Protocol views the physical links in an EtherChannel as one logical connection.
C and E
A network administrator is configuring an EtherChannel link between switches SW1 and SW2 by using the command SW1(config-if-range)# channel-group 1 mode auto . Which command must be used on SW2 to enable this EtherChannel? A: SW2(config-if-range)# channel-group 1 mode on B: SW2(config-if-range)# channel-group 1 mode active C: SW2(config-if-range)# channel-group 1 mode passive D: SW2(config-if-range)# channel-group 1 mode desirable
D
What is the value used to determine which port on a non-root bridge will become a root port in a STP network? A: the VTP revision number B: the highest MAC address of all the ports in the switch C: the lowest MAC address of all the ports in the switch D: the path cost
D
