這是作業嗎???還是考題????

1) Explain what is the function of default gateway in TCP/IP ?
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Default Gateway: In TCP/IP, the intermediate network device on the local network that has knowledge of the network IDs of the other networks in the Internet, so it can forward the packets to other gateways until they are delivered to the one connected to the specified destination.

In general, a gateway is simply a device on a network that acts as an entrance to another network. In more technical terms, a gateway is a routing device that knows how to pass traffic between different subnets and networks. A computer will know some routes (a route is the address of each node a packet must go through on the Internet to get to a specific destination). But a computer will not know all the routes to every address on the Internet. It won't even know all the routes on the subnets nearest to it. A gateway will not have this information either, but it will at least know the addresses of other gateways that it can hand the traffic off to.


2) In windows 2000 Server, how do you share a directory to
a specific group of user ?
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never use windows system

3) In Linux, how do you check the disk space ?
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please man "df" and "du" command

4) In Linux, what is the command to list all files in particular
directory to show all file attributes?
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please man "ls" command

5) In Linux, how to allow group read and write access for
a directory ?
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please man "chmod" and "chown" command