Exam 200-301 topic 1 question 70 discussion

C and E. Little confusion at first about E because of the use of the word "Packet" which is a layer 3 term rather than using "Frame" for a layer 2 concept. However, we need to remember that packet is a general term that is also used to replace other terms like a "frame" of other layers. CISCO questions like this tend to use it as well. Also, a L3 packet encapsulates a L2 frame which in turn embed a frame.

Even if no answer talks about “frames”, but only “packets” are mentioned, just focus on what a Layer 2 switch DOES, not ON WHAT a Layer 2 switch operates. A. acts as a central point for association and authentication servers I think a WLC does this: “association” means a wireless device which associates with a lightweight AP, and an “authentication server” can be a RADIUS server configured on a WLC to authenticate wireless users. To me, wrong answer. B. selects the best route between networks on a WAN A router’s job. Wrong answer. C. moves packets within a VLAN Yes, a Layer 2 switch does this. Correct answer. D. moves packets between different VLANs Well, inter-VLANs routing implies a Layer 3 switch, not a Layer 2 one. Wrong answer. E. makes forwarding decisions based on the MAC address of a packet Yes, the typical use of a Layer 2 switch. Correct answer.

C and E are correct. If you want to move packets between many VLANs, you have to use layer 3 devices.

not a packet its frame...since its layer 2

C. Moves packets within a VLAN, and E. makes forwarding decisions based on the MAC address of a packet.

You need Router On Stick to route VLAN - so A-E D is incorrect

I meant to say "encapsulates a L2 frame which in turn embed a MAC address"

Is it not possible to transfer packets between different VLANs? In case a 2 Vlans are in the same Subnet of course

C and E are correct put a switch moves frames and not packets.

C,E are correct