A document is a type of Excel file

Suppose a B-tree of order 5 contains the key values 20, 40, 60 and 70. What happens when we insert the key value 80?

a) All 5 key values can reside at the root node. b) The root becomes 80. c) The root becomes 60. d) The root becomes 40.

be able to send and receive messages in parallel over a network connection, a program must use __________ of execution.

a. one thread. b. two threads. c. three threads. d. four threads.