In the Coda file system, why is it sometimes necessary for users to intervene manually in the
process of updating the copies of a file at multiple servers?
What will be an ideal response?
Conflicts may be detected between the timestamps of versions of files at a Coda file server and a disconnected
workstation when the workstation is reintegrated, Conflicts arise because the versions have diverged, that is,
the version on the file server may have been updated by one client and the version on the workstation by
another. When such conflicts occur, the version of the file from the workstation is placed in a covolume – an
off-line version of the file volume that is awaiting manual processing by a user. The user may either reject the
new version, install the new version in preference to the one on the server, or merge the two files using a tool
appropriate to the format of the file.
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Which of the following statements is false?
a. A JavaFX GUI's scene graph is a tree structure of an app’s visual elements, such as GUI controls, shapes, images, video, text and more. b. Each visual element in the scene graph is a node—an instance of a subclass of Node (package javafx.scene), which defines common attributes and behaviors for all nodes in the scene graph. c. The first node in the scene graph is known as the origin. d. Nodes that have children are typically layout containers that arrange their child nodes in the scene.
The ____ utility is used to determine if a specific machine located at a specific IP address is online.?
A. ?Echo B. ?Ping C. ?ps D. ?Alive
In documents such as a newsletter, ________ should be used sparingly so the document does not look busy and become difficult to read
A) bullets B) leader characters C) sections D) color s
In many web forms, important data is stored within _____ so that the data is available to programmers but removed from the user's control.
A. event handlers B. hidden fields C. reference forms D. radio buttons