Current commercial routers

Today, many commercial routers have the capability to do three things: (a) packet routing; (b) firewalling; and
(c) providing VPN services.
However, in many situations, a router does not need to do all three.
Please describe a scenario where a router only needs to do packet routing.
Please describe a scenario where a router only needs to firewall packets.
Please describe a scenario where a router needs to do both (a) and (b), but not (c).
This discussion should consist OF AT LEAST THREE FULL PARAGRAPHS (ONE FOR EACH QUESTION).
The instructor reserves the right to take off points for lack of a full paragraph or effort for each question’s
response.
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