NetWorking Spanning Tree Protocol(1st)

What is the purpose of Spanning Tree Protocol in a switched LAN?

1 Mark(s)

To manage the VLAN database across multiple switches
To provide a mechanism for network monitoring in switched environments
To prevent switching loops in networks with redundant switched paths
To prevent routing loops in networks with redundant paths
To create collision domains

You want to run the new 802.1w on your switches. Which of the following would enable this protocol?

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Switch# spanning-tree mode 802.1w
Switch(config)# spanning-tree mode rapid-pvst
Switch# spanning-tree mode rapid-pvst
Switch(config)# spanning-tree mode 802.1w

What command will display the forward/filter table?

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show mac address-table
show mac filter
show mac filter-table
show run

Which of the following statement is true?

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A switch creates separate collision domains but one broadcast domain. A router provides a separate broadcast domain.
A switch creates a single collision domain and separate broadcast domains. A router provides a separate broadcast domain as well.
A switch creates separate collision domains and separate broadcast domains. A router provides separate collision domains.
A switch creates a single collision domain and a single broadcast domain. A router creates a single collision domain.

Your switch has a port status LED that is alternating between green and amber. What could this indicate?

1 Mark(s)

The port is experiencing errors.
The port is shut down.
Nothing; this is normal.
The port is in STP blocking mode.

What are the distinct functions of layer 2 switching that increase available bandwidth on the network?
1. Address learning
2. Routing
3. Forwarding and filtering
4. Creating network loops
5. Loop avoidance
6. IP addressing

1 Mark(s)

2, 4 and 6
1, 3 and 5
3 and 5
2 and 6

You need to allow one host to be permitted to attach dynamically to each switch interface. Which two commands must you configure on your catalyst switch to meet this policy?
1. Switch (config-if) # ip access-group 10
2. Switch (config-if) # switchport port-security maximum 1
3. Switch (config) # access-list 10 permit ip host 1
4. Switch (config-if) # switchport port-security violation shutdown
5. Switch (config) # mac-address-table secure

1 Mark(s)

2, 3 and 5
4 and 5
2 and 4
1 and 3

Which statement describes a spanning-tree network that has converged?

1 Mark(s)

All switch and bridge ports are either blocking or looping.
All switch and bridge ports are in the forwarding state.
All switch and bridge ports are in either the forwarding or blocking state.
All switch and bridge ports are assigned as either root or designated ports.

What does a switch do when a frame is received on an interface and the destination hardware address is unknown or not in the filter table?

1 Mark(s)

Floods the network with the frame looking for the device
Drops the frame
Sends back a message to the originating station asking for a name resolution
Forwards the switch to the first available link

You have two switches connected together with two crossover cables for redundancy, and STP is disabled. Which of the following will happen between the switches?

1 Mark(s)

The routing tables on the switches will not update.
Broadcast storms will occur on the switched network.
The MAC forward/filter table will not update on the switch.
The switches will automatically load-balance between the two links.

Layer 2 switching provides which of the following?
1. Hardware-based bridging (ASIC)
2. Wire speed
3. Low latency
4. Low cost

1 Mark(s)

1 and 3
1, 2 and 4
All of the above
2 and 4

If you want to disable STP on a port connected to a server, which command would you use?

1 Mark(s)

spanning-tree security
disable spanning-tree
spanning-tree off
spanning-tree portfast

If a switch receives a frame and the source MAC address is not in the MAC address table but the destination address is, what will the switch do with the frame?

1 Mark(s)

Flood the network with the frame
Discard it and send an error message back to the originating host
Add the source address and port to the MAC address table and forward the frame out the destination port
Add the destination to the MAC address table and then forward the frame

Which of the following is a layer 2 protocol used to maintain a loop-free network?

1 Mark(s)

RIP
STP
CDP
VTP

What is the result of segmenting a network with a bridge (switch)?
1. It increases the number of collision domains.
2. It decreases the number of collision domains.
3. It increases the number of broadcast domains.
4. It decreases the number of broadcast domains.
5. It makes smaller collision domains.
6. It makes larger collision domains.

1 Mark(s)

1, 3 and 6
3, 4 and 6
1 and 5
2, 3 and 5

What are the distinct functions of layer 2 switching that increase available bandwidth on the network?
1. Address learning
2. Routing
3. Forwarding and filtering
4. Creating network loops
5. Loop avoidance
6. IP addressing

1 Mark(s)

2 and 6
3 and 5
2, 4 and 6
1, 3 and 5

What are the distinct functions of layer 2 switching that increase available bandwidth on the network?
1. Address learning
2. Routing
3. Forwarding and filtering
4. Creating network loops
5. Loop avoidance
6. IP addressing

1 Mark(s)

1, 3 and 5
2 and 6
3 and 5
2, 4 and 6

In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN?

1 Mark(s)

After broken links are reestablished
In an improperly implemented redundant topology
When upper-layer protocols require high reliability
During high-traffic periods

What are the distinct functions of layer 2 switching that increase available bandwidth on the network?
1. Address learning
2. Routing
3. Forwarding and filtering
4. Creating network loops
5. Loop avoidance
6. IP addressing

1 Mark(s)

3 and 5
2, 4 and 6
2 and 6
1, 3 and 5

NetWorking Spanning Tree Protocol(1st) : Question 1 of 19