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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. |
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.