60 Switching & VLANs questions from the Networking bank, written for Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd.
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A.forwarding traffic between VLANs using a router or Layer 3 switch
B.a logical Layer 2 segment that isolates broadcast domains within a switch
C.a 48-bit hardware address burned into a network interface, written in hex
D.a link that carries multiple VLANs by tagging frames with a VLAN ID
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2. Which term means: "a 48-bit hardware address burned into a network interface, written in hex"?
Junior
A.Access port
B.MAC address table
C.Collision domain
D.MAC address
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3. Which statement is correct?
Junior
A.MAC address — a switch port assigned to a single VLAN that carries untagged frames
B.MAC address — the switch with the lowest bridge ID that becomes the reference point of the spanning tree
C.MAC address — the VLAN whose frames cross an 802.1Q trunk untagged
D.MAC address — a 48-bit hardware address burned into a network interface, written in hex
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4. What is VLAN?
Junior
A.limiting which or how many MAC addresses may use a switch port
B.a logical Layer 2 segment that isolates broadcast domains within a switch
C.a frame addressed to a single destination MAC address
D.a link that carries multiple VLANs by tagging frames with a VLAN ID
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5. Which term means: "a logical Layer 2 segment that isolates broadcast domains within a switch"?
Junior
A.VLAN
B.Collision domain
C.Broadcast domain
D.Voice VLAN
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6. Which statement is correct?
Junior
A.VLAN — a faster-converging version of spanning tree that reduces blocking delays
B.VLAN — a logical Layer 2 segment that isolates broadcast domains within a switch
C.VLAN — a protocol that prevents Layer 2 loops by blocking redundant paths
D.VLAN — limiting which or how many MAC addresses may use a switch port
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7. What is Broadcast domain?
Junior
A.limiting which or how many MAC addresses may use a switch port
B.the switch's mapping of MAC addresses to physical ports for frame forwarding
C.a network segment where frames can collide, eliminated by full-duplex switching
D.the set of devices that receive a broadcast frame sent by any member
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8. Which term means: "the set of devices that receive a broadcast frame sent by any member"?
Junior
A.Rapid STP (802.1w)
B.Broadcast domain
C.Switched Virtual Interface (SVI)
D.VLAN
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9. Which statement is correct?
Junior
A.Broadcast domain — the set of devices that receive a broadcast frame sent by any member
B.Broadcast domain — a faster-converging version of spanning tree that reduces blocking delays
C.Broadcast domain — a dedicated VLAN that separates IP phone traffic for QoS and security
D.Broadcast domain — a switch port assigned to a single VLAN that carries untagged frames
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10. What is Collision domain?
Junior
A.a dedicated VLAN that separates IP phone traffic for QoS and security
B.a network segment where frames can collide, eliminated by full-duplex switching
C.a frame addressed to a single destination MAC address
D.a virtual Layer 3 interface on a switch representing a VLAN for routing
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11. Which term means: "a network segment where frames can collide, eliminated by full-duplex switching"?
Junior
A.802.1Q trunk
B.Collision domain
C.VLAN
D.Native VLAN
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12. Which statement is correct?
Junior
A.Collision domain — a Layer 2 device that forwards frames based on learned MAC addresses
B.Collision domain — a network segment where frames can collide, eliminated by full-duplex switching
C.Collision domain — bundling multiple physical links into one logical link for bandwidth and redundancy
D.Collision domain — a link that carries multiple VLANs by tagging frames with a VLAN ID
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13. What is MAC address table?
Junior
A.the set of devices that receive a broadcast frame sent by any member
B.the switch's mapping of MAC addresses to physical ports for frame forwarding
C.a Layer 2 device that forwards frames based on learned MAC addresses
D.a link that carries multiple VLANs by tagging frames with a VLAN ID
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14. Which term means: "the switch's mapping of MAC addresses to physical ports for frame forwarding"?
Junior
A.Native VLAN
B.MAC address table
C.EtherChannel / LACP
D.Broadcast domain
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15. Which statement is correct?
Junior
A.MAC address table — a protocol that prevents Layer 2 loops by blocking redundant paths
B.MAC address table — a logical Layer 2 segment that isolates broadcast domains within a switch
C.MAC address table — a virtual Layer 3 interface on a switch representing a VLAN for routing
D.MAC address table — the switch's mapping of MAC addresses to physical ports for frame forwarding
Answer + AI explanation with Pro
16. What is 802.1Q trunk?
Mid
A.a link that carries multiple VLANs by tagging frames with a VLAN ID
B.a network segment where frames can collide, eliminated by full-duplex switching
C.the set of devices that receive a broadcast frame sent by any member
D.a Layer 2 device that forwards frames based on learned MAC addresses
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17. Which term means: "a link that carries multiple VLANs by tagging frames with a VLAN ID"?
Mid
A.MAC address table
B.Inter-VLAN routing
C.802.1Q trunk
D.Collision domain
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18. Which statement is correct?
Mid
A.802.1Q trunk — forwarding traffic between VLANs using a router or Layer 3 switch
B.802.1Q trunk — a switch port assigned to a single VLAN that carries untagged frames
C.802.1Q trunk — the switch's mapping of MAC addresses to physical ports for frame forwarding
D.802.1Q trunk — a link that carries multiple VLANs by tagging frames with a VLAN ID
Answer + AI explanation with Pro
19. What is Access port?
Mid
A.a 48-bit hardware address burned into a network interface, written in hex
B.a switch port assigned to a single VLAN that carries untagged frames
C.limiting which or how many MAC addresses may use a switch port
D.the switch with the lowest bridge ID that becomes the reference point of the spanning tree
Answer + AI explanation with Pro
20. Which term means: "a switch port assigned to a single VLAN that carries untagged frames"?
Mid
A.Voice VLAN
B.Access port
C.STP root bridge
D.EtherChannel / LACP
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21. Which statement is correct?
Mid
A.Access port — a logical Layer 2 segment that isolates broadcast domains within a switch
B.Access port — the switch with the lowest bridge ID that becomes the reference point of the spanning tree
C.Access port — the switch's mapping of MAC addresses to physical ports for frame forwarding
D.Access port — a switch port assigned to a single VLAN that carries untagged frames
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22. What is Native VLAN?
Mid
A.a logical Layer 2 segment that isolates broadcast domains within a switch
B.the VLAN whose frames cross an 802.1Q trunk untagged
C.bundling multiple physical links into one logical link for bandwidth and redundancy
D.a faster-converging version of spanning tree that reduces blocking delays
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23. Which term means: "the VLAN whose frames cross an 802.1Q trunk untagged"?
Mid
A.STP root bridge
B.Native VLAN
C.Inter-VLAN routing
D.MAC address table
Answer + AI explanation with Pro
24. Which statement is correct?
Mid
A.Native VLAN — a protocol that prevents Layer 2 loops by blocking redundant paths
B.Native VLAN — forwarding traffic between VLANs using a router or Layer 3 switch
C.Native VLAN — a Cisco protocol that propagates VLAN configuration across a switch domain
D.Native VLAN — the VLAN whose frames cross an 802.1Q trunk untagged
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25. What is Spanning Tree Protocol (STP)?
Mid
A.the switch with the lowest bridge ID that becomes the reference point of the spanning tree
B.a protocol that prevents Layer 2 loops by blocking redundant paths
C.a network segment where frames can collide, eliminated by full-duplex switching
D.a Layer 2 device that forwards frames based on learned MAC addresses
Answer + AI explanation with Pro
26. Which term means: "a protocol that prevents Layer 2 loops by blocking redundant paths"?
Mid
A.Broadcast domain
B.Native VLAN
C.Spanning Tree Protocol (STP)
D.802.1Q trunk
Answer + AI explanation with Pro
27. Which statement is correct?
Mid
A.Spanning Tree Protocol (STP) — a dedicated VLAN that separates IP phone traffic for QoS and security
B.Spanning Tree Protocol (STP) — a protocol that prevents Layer 2 loops by blocking redundant paths
C.Spanning Tree Protocol (STP) — overwhelming a switch's MAC table so it floods frames out all ports
D.Spanning Tree Protocol (STP) — limiting which or how many MAC addresses may use a switch port
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28. What is Inter-VLAN routing?
Mid
A.a faster-converging version of spanning tree that reduces blocking delays
B.the set of devices that receive a broadcast frame sent by any member
C.forwarding traffic between VLANs using a router or Layer 3 switch
D.a logical Layer 2 segment that isolates broadcast domains within a switch
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29. Which term means: "forwarding traffic between VLANs using a router or Layer 3 switch"?
Mid
A.Inter-VLAN routing
B.MAC address table
C.Collision domain
D.Voice VLAN
Answer + AI explanation with Pro
30. Which statement is correct?
Mid
A.Inter-VLAN routing — the switch's mapping of MAC addresses to physical ports for frame forwarding
B.Inter-VLAN routing — a link that carries multiple VLANs by tagging frames with a VLAN ID
C.Inter-VLAN routing — a protocol that prevents Layer 2 loops by blocking redundant paths
D.Inter-VLAN routing — forwarding traffic between VLANs using a router or Layer 3 switch
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