Switching and VLAN Technologies Flashcards
Cisco CCNA 200-301 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. |
About the Flashcards
Flashcards for the Cisco CCNA exam give you a quick-hit review of essential switching and VLAN concepts tested on the certification. Each card distills definitions and commands such as IEEE 802.1Q tagging, switchport modes, and the purpose of management or private VLANs, helping you reinforce the terminology you'll meet on test day.
The deck also walks through Spanning Tree roles, EtherChannel aggregation, MAC address learning, and VTP distribution so you can connect configuration steps to their underlying theory. Use these cards to quiz yourself on root bridge selection, native VLAN behavior, trunk allowed lists, and other key details that often appear in scenario questions.
Topics covered in this flashcard deck:
- VLAN fundamentals
- Trunking & 802.1Q
- Spanning Tree protocols
- EtherChannel aggregation
- VTP configuration
- Switch security basics