Explanation:
By default, SSH opens port 22.
However, this can be arbitrarily changed. So if port 22 does not work, it is necessary to check the exact/new port number.
Er..... i do not know the answer to this
Primary storage would be downloads and whatever goes directly to your Dropbox or something like that. Secondary storage would also be downloads, but it would be the things that go to your hard drive, and lastly, off-line storage is storage on things like Flash Drives or CD-ROMs.