Respuesta :

When using the function btree remove key(node, key index) to remove a key from a 2-3-4 tree node, 0 isn't a valid keyIndex. So, option D is the correct option.

What is keyindex?

There are a maximum of four WEP keys that can be set up on an access point (wireless router). The network, however, only employs one key at a time. Keyindex refers to the keyindex of a particular key, which is one of the keys' numbers. If the access point has multiple WEP keys configured, every wireless device on the network must be set to use the same keyindex.

Only when keyType is networkKey does keyIndex come into play. As long as sharedKey is present, the default value is 0. A number between 0 and 3 inclusive must be entered.

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