To select a block of text, click at the beginning of the selection, scroll to the end of the selection, position the mouse pointer at the end of the selection, hold down the _____ key, and then click (or drag through the text).
We have done an RFM analysis on our customer data. Mary Jones has a score of "1 1 5". This series means that Mary ________ .
Options: Has ordered recently, orders frequently, and places a large order when she orders., Hasn't ordered recently, orders infrequently, but places a large order when she orders., Has ordered recently, orders frequently, but doesn't place a large order when she orders, Hasn't ordered recently, orders infrequently, and doesn't place a large order when she orders.
If a switch receives a frame and the source MAC address is not in the MAC address table but the destination address is, what will the switch do with the frame?
Options: Discard it and send an error message back to the originating host, Flood the network with the frame, Add the source address and port to the MAC address table and forward the frame out the destination port, Add the destination to the MAC address table and then forward the frame
Which of the following refers to the terms "residual error rate"?
Options: the number of bit errors per twenty four hours of continuous operation on an asynchronous line, The probability that one or more errors will be undetected when an error detection scheme is used, the probability that one or more errors will be detected when an error detection mechanism is used, signal to noise ratio divided by the ratio of energy per bit to noise per hertz
Options: means storing records in contiguous blocks according to a key., Stores records sequentially but uses an index to locate records, uses an index for each key type, has records placed randomly throughout the file
Options: is a method of memory allocation by which the program is subdivided into equal portions, or pages and core is subdivided into equal portions or blocks., consists of those addresses that may be generated by a processor during execution of a computation., is a method of allocating processor time., allows multiple programs to reside in separate areas of core at the time.