Cisco Chapter 2 Test Answers – Flashcards
Unlock all answers in this set
Unlock answersquestion
Which protocol provides up to 16 instances of RSTP, combines many VLANs with the same physical and logical topology into a common RSTP instance, and provides support for PortFast, BPDU guard, BPDU filter, root guard, and loop guard?
answer
MST
question
Which two types of spanning tree protocols can cause suboptimal traffic flows because they assume only one spanning-tree instance for the entire bridged network? (Choose two.)
answer
STP RSTP
question
A network administrator is preparing the implementation of Rapid PVST+ on a production network. How are the Rapid PVST+ link types determined on the switch interfaces?
answer
Link types are determined automatically.
question
Which RSTP ports are connected to end devices?
answer
edge ports
question
If no bridge priority is configured in PVST, which criteria is considered when electing the root bridge?
answer
lowest MAC address
question
Which port state will switch ports immediately transition to when configured for PortFast?
answer
forwarding
question
To obtain an overview of the spanning tree status of a switched network, a network engineer issues the show spanning-tree command on a switch. Which two items of information will this command display? (Choose two.)
answer
The role of the ports in all VLANs. The root bridge BID.
question
The spanning-tree ___ global configuration command is used to enable Rapid PVST+.
answer
mode rapid-pvst
question
Which STP priority configuration would ensure that a switch would always be the root switch?
answer
spanning-tree vlan 10 priority 0
question
Which nonproprietary protocol provides router redundancy for a group of routers which support IPv4 LANs?
answer
VRRPv2
question
n FHRP operation, two or more routers are represented as a single ___ router.
answer
virtual
question
Which three components are combined to form a bridge ID?
answer
extended system ID MAC address bridge priority
question
What is a characteristic of a Layer 2 loop?
answer
Broadcast frames are forwarded back to the sending switch.
question
Which two network design features require Spanning Tree Protocol (STP) to ensure correct network operation? (Choose two.)
answer
redundant links between Layer 2 switches removing single points of failure with multiple Layer 2 switches
question
What additional information is contained in the 12-bit extended system ID of a BPDU?
answer
VLAN ID
question
What is an advantage of PVST+?
answer
PVST+ optimizes performance on the network through load sharing.
question
What is the purpose of HSRP?
answer
It provides a continuous network connection when a router fails.
question
In which two port states does a switch learn MAC addresses and process BPDUs in a PVST network? (Choose two.)
answer
learning forwarding
question
What is the outcome of a Layer 2 broadcast storm?
answer
New traffic is discarded by the switch because it is unable to be processed.
