Which of the following keyboard commands returns to the previous slide?
A. [up arrow]
B. [PgUp]
C. [W]
D. both [up arrow] and [PgUp]
Answer: D
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The middle tier represents the application’s ________.
a) interface b) functionality c) database d) information e) None of the above.
What is the correct order of steps for creating a multitable query?
I. Step 1 II. Step 2 III. Step 3 IV. Step 4 V. Step 5 A. Add the tables you want B. Click Query Design in the Queries group C. Click Run D. Drag the fields you want E. Click the Create tab
Which command would clone the contents of /dev/sda1 to /dev/sda2?
A) dd if=/dev/sda2 of=/dev/sda1 B. dd /dev/sda1 /dev/sda2 C. dd copy /dev/sda1 to /dev/sda2 D. dd if=/dev/sda1 of=/dev/sda2
Suppose that a disk drive has 5000 cylinders, numbered 0 to 4999. The drive is currently serving a request at cylinder 143, and the previous request was at cylinder 125. The queue of pending requests, in FIFO order, is:
86, 1470, 913, 1774, 948, 1509, 1022, 1750, 130. Starting from the current head position, what is the total distance (in cylinders) that the disk arm moves to satisfy all the pending requests, for each of the following disk?scheduling algorithms? a. FCFS b. SSTF c. SCAN