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CCNA 3 v5
CCNA 3 v5 SN Chapter 2 Exam Answers 2014
CCNA 3 v5

CCNA 3 v5 SN Chapter 2 Exam Answers 2014

admin May 28, 2014

CCNA 3 v5 SN Chapter 2 Exam Answers 2014 

Scaling Networks

1 
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?

STP

Rapid PVST+

PVST+

MST*

2 
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.)

STP*

RSTP*

MSTP

Rapid PVST+

PVST+

3


Refer to the exhibit. Which protocol information is being displayed in the output?

HSRP

VRRP

GLBP*

FHRP

4 
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?

Link types can only be configured on access ports configured with a single VLAN.

Link types must be configured with specific port configuration commands.

Link types are determined automatically.*

Link types can only be determined if PortFast has been configured.

5 
Which RSTP ports are connected to end devices?

root ports

designated ports

trunk ports

edge ports*

6 
If no bridge priority is configured in PVST, which criteria is considered when electing the root bridge?

highest IP address

lowest MAC address*

lowest IP address

highest MAC address

7 
Which port state will switch ports immediately transition to when configured for PortFast?

learning

blocking

forwarding*

listening

8 
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.)

The role of the ports in all VLANs.*

The IP address of the management VLAN interface.

The number of broadcasts received on each root port.

The status of native VLAN ports.

The root bridge BID.*

9

Launch PT    Hide and Save PT
Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
Which switch is the root bridge?​

Switch_1

Switch_2

Switch_4*

Switch_3

10 
Fill in the blank. Do not use abbreviations.
The spanning-tree ” mode rapid-pvst ” global configuration command is used to enable Rapid PVST+.

11 
Which STP priority configuration would ensure that a switch would always be the root switch?

spanning-tree vlan 10 root primary

spanning-tree vlan 10 priority 4096

spanning-tree vlan 10 priority 0*

spanning-tree vlan 10 priority 61440

12 
Which nonproprietary protocol provides router redundancy for a group of routers which support IPv4 LANs?

VRRPv2*

SLB

GLBP

HSRP

13 
Fill in the blank.
In FHRP operation, two or more routers are represented as a single ” virtual ” router.

14 
Which three components are combined to form a bridge ID?

extended system ID*

MAC address*

port ID

IP address

cost

bridge priority*

15 
What is a characteristic of a Layer 2 loop?

A switch is continually forwarding the same unicast frame.

Broadcast frames are forwarded back to the sending switch.*

Routers continually forward packets to other routers.

The Time-to-Live attribute of a frame is set to infinity.

16 
Which two network design features require Spanning Tree Protocol (STP) to ensure correct network operation? (Choose two.)

redundant links between Layer 2 switches*

removing single points of failure with multiple Layer 2 switches*

link-state dynamic routing that provides redundant routes

static default routes

implementing VLANs to contain broadcasts

17 
What additional information is contained in the 12-bit extended system ID of a BPDU?

MAC address

VLAN ID*

port ID

IP address

18 
What is an advantage of PVST+?

PVST+ optimizes performance on the network through load sharing.*

PVST+ requires fewer CPU cycles for all the switches in the network.

PVST+ reduces bandwidth consumption compared to traditional implementations of STP that use CST.

PVST+ optimizes performance on the network through autoselection of the root bridge.

19 
What is the purpose of HSRP?

It prevents malicious hosts from connecting to trunk ports.

It enables an access port to immediately transition to the forwarding state.

It prevents a rogue switch from becoming the STP root.

It provides a continuous network connection when a router fails.*

20 
In which two port states does a switch learn MAC addresses and process BPDUs in a PVST network? (Choose two.)

listening

learning*

forwarding*

disabled

blocking

21


Place the options in the following order: 
Step 4 
– not scored – 
Step 3 
Step 1 
Step 2

22


Refer to the exhibit. A network engineer is troubleshooting host connectivity on a LAN that uses a first hop redundancy protocol. Which IPv4 gateway address should be configured on the host?

192.168.2.0

192.168.2.1

192.168.2.2

192.168.2.100*

23 
What is the outcome of a Layer 2 broadcast storm?

CSMA/CD will cause each host to continue transmitting frames.

ARP broadcast requests are returned to the transmitting host.

Routers will take over the forwarding of frames as switches become congested.

New traffic is discarded by the switch because it is unable to be processed.*

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