Online Storage and File Sharing
Online storage puts files on a provider's servers so they can be reached from multiple devices and shared with others. Candidates must understand sync (a local folder mirrored to the cloud and to other devices), backup (a copy for recovery, not the same as sync), and sharing models: private, shared with specific people, shared with a link, and public. Know the permission levels typically offered - view/read, comment, edit/write, and owner/manager - and that the owner controls sharing and can transfer or revoke it.
Learn the mechanics that questions test: link sharing with options such as anyone-with-the-link versus restricted recipients, optional passwords and expiry dates; download versus online preview; version history and restore; offline access via cached copies; and storage quotas shared across an account's files. Understand file-size limits, accepted formats, and that moving or renaming a shared file usually keeps the link valid, while deleting it breaks access.
Traps to expect: confusing sync with backup (deleting a file in a synced folder can delete it everywhere); assuming a shared link is private (anyone with the link can open it); and mixing up share with send a copy - sharing gives access to the live file, emailing an attachment creates a separate copy that won't update. Also watch for items on encryption in transit vs at rest and on respecting copyright and confidentiality when sharing.
Rule of thumb: before sharing, ask who should access this, what may they do, and for how long? Then choose the narrowest permission and link setting that satisfies it. Worked example: To let a client read a proposal but not alter it, share the file with view permission to that person's address, not a public edit link.