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Switching and VLAN Technologies Flashcards
| Front | Back |
| How do switches operating in VTP Transparent mode behave | They do not propagate VLAN changes and only forward VTP advertisements. |
| How does a switch determine where to forward a frame | By using the MAC address table. |
| How does the switch learn the MAC address of a connected device | By examining the source MAC address of incoming frames. |
| What command in Cisco IOS shows the current VLAN configuration | show vlan brief. |
| What command would you use to assign a switch port to a specific VLAN | switchport access vlan <VLAN_ID>. |
| What does a Layer 3 switch do that a Layer 2 switch cannot | Perform routing between VLANs (inter-VLAN routing). |
| What does the acronym BPDU stand for | Bridge Protocol Data Unit. |
| What does the command switchport trunk allowed vlan <VLAN_LIST> do | Specifies which VLANs are allowed to pass through a trunk port. |
| What does the PortFast configuration in STP achieve | It allows a port to immediately transition to the forwarding state. |
| What does VTP stand for | VLAN Trunking Protocol. |
| What happens if there’s a VLAN mismatch on a trunk port | Traffic from the mismatched VLANs will be dropped or cause communication issues. |
| What happens when two switches form a loop without STP | Broadcast storms occur, overwhelming the network. |
| What is a broadcast domain | A network segment in which any broadcast sent by one device can be received by all devices in the same segment. |
| What is a trunk port in VLAN terminology | A port that carries traffic for multiple VLANs. |
| What is EtherChannel used for | To aggregate multiple physical links into one logical link for increased bandwidth and redundancy. |
| What is the benefit of using private VLANs | To provide further segmentation and isolation within a VLAN. |
| What is the default VLAN ID for most network switches | VLAN 1. |
| What is the designated port in STP | A port that forwards traffic toward the root bridge. |
| What is the function of the Spanning Tree Protocol (STP) | To prevent loops in a switched network. |
| What is the maximum number of VLANs supported by the 802.1Q standard | 4094 VLANs. |
| What is the native VLAN in a trunk port configuration | The VLAN that is not tagged on a trunk link. |
| What is the primary purpose of a VLAN | To segment a network into smaller, logical broadcast domains. |
| What is the primary purpose of VTP | To propagate VLAN configuration information across connected switches. |
| What is the purpose of a VLAN hopping attack | To access VLANs that are not authorized for use by exploiting VLAN tagging. |
| What is the role of the root bridge in STP | To serve as the focal point for all spanning tree calculations. |
| What protocol has largely replaced STP in modern networks | Rapid Spanning Tree Protocol (RSTP). |
| What protocol is commonly used for VLAN tagging on Ethernet frames | IEEE 802.1Q. |
| What type of switchport configuration is required for enabling trunking | switchport mode trunk. |
| What type of VLAN is used for device management | Management VLAN. |
| What VTP mode allows a switch to create | modify, or delete VLANs, VTP Server mode. |
Front
What happens if there’s a VLAN mismatch on a trunk port
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Back
Traffic from the mismatched VLANs will be dropped or cause communication issues.
Front
What command would you use to assign a switch port to a specific VLAN
Back
switchport access vlan <VLAN_ID>.
Front
What is the designated port in STP
Back
A port that forwards traffic toward the root bridge.
Front
What protocol is commonly used for VLAN tagging on Ethernet frames
Back
IEEE 802.1Q.
Front
What is the benefit of using private VLANs
Back
To provide further segmentation and isolation within a VLAN.
Front
What protocol has largely replaced STP in modern networks
Back
Rapid Spanning Tree Protocol (RSTP).
Front
What command in Cisco IOS shows the current VLAN configuration
Back
show vlan brief.
Front
How do switches operating in VTP Transparent mode behave
Back
They do not propagate VLAN changes and only forward VTP advertisements.
Front
What is the maximum number of VLANs supported by the 802.1Q standard
Back
4094 VLANs.
Front
What does the PortFast configuration in STP achieve
Back
It allows a port to immediately transition to the forwarding state.
Front
How does a switch determine where to forward a frame
Back
By using the MAC address table.
Front
What does the command switchport trunk allowed vlan <VLAN_LIST> do
Back
Specifies which VLANs are allowed to pass through a trunk port.
Front
What is the default VLAN ID for most network switches
Back
VLAN 1.
Front
What is a trunk port in VLAN terminology
Back
A port that carries traffic for multiple VLANs.
Front
What does VTP stand for
Back
VLAN Trunking Protocol.
Front
What VTP mode allows a switch to create
Back
modify, or delete VLANs, VTP Server mode.
Front
What is the primary purpose of a VLAN
Back
To segment a network into smaller, logical broadcast domains.
Front
What is EtherChannel used for
Back
To aggregate multiple physical links into one logical link for increased bandwidth and redundancy.
Front
What is the purpose of a VLAN hopping attack
Back
To access VLANs that are not authorized for use by exploiting VLAN tagging.
Front
How does the switch learn the MAC address of a connected device
Back
By examining the source MAC address of incoming frames.
Front
What is the primary purpose of VTP
Back
To propagate VLAN configuration information across connected switches.
Front
What type of switchport configuration is required for enabling trunking
Back
switchport mode trunk.
Front
What does the acronym BPDU stand for
Back
Bridge Protocol Data Unit.
Front
What is the native VLAN in a trunk port configuration
Back
The VLAN that is not tagged on a trunk link.
Front
What is a broadcast domain
Back
A network segment in which any broadcast sent by one device can be received by all devices in the same segment.
Front
What is the function of the Spanning Tree Protocol (STP)
Back
To prevent loops in a switched network.
Front
What type of VLAN is used for device management
Back
Management VLAN.
Front
What is the role of the root bridge in STP
Back
To serve as the focal point for all spanning tree calculations.
Front
What does a Layer 3 switch do that a Layer 2 switch cannot
Back
Perform routing between VLANs (inter-VLAN routing).
Front
What happens when two switches form a loop without STP
Back
Broadcast storms occur, overwhelming the network.
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This deck focuses on switching fundamentals including VLAN configuration, trunking protocols, STP, EtherChannel, and network segmentation, helping learners grasp how data is efficiently forwarded within LANs.