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

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: 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