Cisco 200-150 Exam

What are two attributes of a VLAN? (Choose two.)

  • A. A VLAN defines a collision domain.
  • B. A VLAN defines a broadcast domain.
  • C. Broadcasts are flooded to all VLANs.
  • D. Collisions are flooded to all VLANs.
  • E. A Layer 3 device is required to route packets between VLANs.
  • F. A Layer 2 device is required to route packets between VLANs.
Answer: Option B. E.
Explanation: 

“In computer networking, a single layer-2 network may be partitioned to create multiple distinct broadcast domains, which are mutually isolated so that packets can only pass between them via one or more routers; such a domain is referred to as a virtual local area network, virtual LAN or VLAN.”
“A router (Layer 3 device) serves as the backbone for network traffic going across different VLANs.” http://en.wikipedia.org/wiki/Virtual_LAN

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