Can a client act as both a client and server?

Answer:
Yes, at times both clients and servers can reverse roles. If a system is providing resources for another it is in a server role. If it is asking for resources on another system it is a client.

However, server and client OS software are different because they have different requirements. A client desktop OS such as Vista is limited in the number of network connections, for example. You need to have Server software to do some things the client cannot.
First answer by Enigmamerlin. Last edit by Enigmamerlin. Contributor trust: 107 [recommend contributor recommended]. Question popularity: 2 [recommend question].