Network Switch and VLAN Quiz

Which of the following best describes the function of a network switch?

• Broadcasts data to all connected devices on the network

• Filters traffic using IP addresses at Layer 3

• Sends transmissions from one port only to the destination port

• Converts digital signals to analog for WAN communication

What is the purpose of VLAN tagging on a switch port?

• To encrypt traffic on the port

• To identify the port as a trunk link

• To mark data packets with a VLAN ID

• To set the port as an access port

Which IEEE protocol is used to prevent network loops by selecting a root bridge and blocking redundant paths?

• 802.1X

• 802.3

• 802.11ac

• 802.1D

Which of the following is a correct characteristic of a tagged switch port?

• It strips VLAN identifiers from all incoming packets

• It only accepts untagged packets

• It is used to carry multiple VLANs

• It belongs to only one VLAN

What technology allows multiple physical network interfaces to operate as a single logical interface for redundancy and performance?

• VLAN trunking

• Port mirroring

• NIC teaming (Link Aggregation)

• Inter-VLAN routing

You are troubleshooting why a device in VLAN 10 cannot communicate with a device in VLAN 20. Which of the following is the MOST likely cause?

• The switch does not support PoE

• The switch port is configured as untagged

• Inter-VLAN routing has not been configured

• Both devices have static IP addresses

Which switch feature prevents broadcast storms by eliminating loops in a Layer 2 network?

• Maximum Transmission Unit (MTU)

• Port Aggregation Protocol

• Spanning Tree Protocol

• Virtual LAN Routing

Which of the following would MOST likely cause a user to be unable to access network resources after being moved to a new cubicle?

• Incorrect duplex setting

• Incorrect VLAN assignment

• Trunk port misconfiguration

• MTU size mismatch

Which of the following is the PRIMARY purpose of the Spanning Tree Protocol (STP)?

• To assign VLAN IDs to access ports

• To create backup VLAN configurations

• To prevent switching loops on a network

• To improve IP routing performance

What does a switch do when it receives a frame with a destination MAC address not in its MAC address table?

• Sends an ICMP unreachable message

• Drops the frame immediately

• Floods the frame out of all ports except the one it was received on

• Forwards the frame only to trunk ports