220-1101 · Question #55
Which of the following technologies can allow multiple networks to traverse a switch?
The correct answer is A. VLAN. VLANs (Virtual Local Area Networks) enable a single physical switch to carry traffic from multiple logically separate networks. Each VLAN is identified by a tag (IEEE 802.1Q) and is isolated at Layer 2, so devices on different VLANs cannot communicate without a router or Layer 3
Question
Which of the following technologies can allow multiple networks to traverse a switch?
Options
- AVLAN
- BVRRP
- CVPN
- DDHCP
How the community answered
(23 responses)- A91% (21)
- B4% (1)
- C4% (1)
Explanation
VLANs (Virtual Local Area Networks) enable a single physical switch to carry traffic from multiple logically separate networks. Each VLAN is identified by a tag (IEEE 802.1Q) and is isolated at Layer 2, so devices on different VLANs cannot communicate without a router or Layer 3 switch. This allows network segmentation-for example, separating guest, employee, and IoT traffic-on the same physical hardware. Option B (VRRP) is the Virtual Router Redundancy Protocol, used for router failover. Option C (VPN) creates encrypted tunnels across public networks. Option D (DHCP) dynamically assigns IP addresses to clients but does not segment networks on a switch.
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