Which three statements are typical characteristics of VLAN arrangements? (Choose three.)

A.
A new switch has no VLANs configured.

B.
Connectivity between VLANs requires a Layer 3 device.

C.
VLANs typically decrease the number of collision domains.

D.
Each VLAN uses a separate address space.

E.
A switch maintains a separate bridging table for each VLAN.

F.
VLANs cannot span multiple switches.

Explanation:

By default, all ports on a new switch belong to VLAN 1 (default & native VLAN). There are also some
well-known VLANs (for example:
VLAN 1002 for fddi-default; VLAN 1003 for token-ring…) configured by default -> A is not correct. To
communicate between two different VLANs we need to use a Layer 3 device like router or Layer 3
switch -> B is correct. VLANs don’t affect the number of collision domains, they are the same -> C is
not correct. Typically, VLANs increase the number of broadcast domains.We must use a different
network (or sub-network) for each VLAN. For example we can use 192.168.1.0/24 for VLAN 1,
192.168.2.0/24 for VLAN 2 -> D is correct. A switch maintains a separate bridging table for each
VLAN so that it can send frame to ports on the same VLAN only. For example, if a PC in VLAN 2 sends
a frame then the switch look-ups its bridging table and only sends frame out of its ports which
belong to VLAN 2 (it also sends this frame on trunk ports) -> E is correct. We can use multiple
switches to expand VLAN -> F is not correct.