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When deleting a key value from a B-tree, what happens if this results in its node becoming empty?

a) A new root node must be created. b) A new child node must be created. c) The empty node must merge with another node. d) The empty node must split into two nodes.

A communications architecture

a. is a manufacturer’s strategy for interconnecting its equipment b. is a set of detailed rules for communicating over a link c. applies only to computers on a network d. is never proprietary