Answer:
You can assign a value to a routine variable in any of the following ways:
Use a LET statement.
Use a SELECT INTO statement.
Use a CALL statement with a procedure that has a RETURNING clause.
Use an EXECUTE PROCEDURE INTO or EXECUTE FUNCTION INTO statement.
Explanation:
Mechanical mouse has a ball that turns rollers inside. If friction is lost between the ball and the mousing surface, or between the ball and the rollers, the mouse fails to work. In order to assure good contact with the mousing surface, the ball must be fairly heavy. When you change directions with the mouse, you must make the ball change rolling directions--an action that inertia likes to prevent.
An optical mouse makes use of an LED and some optics to detect surface texture and the changes in it as the mouse is moved. There are no moving parts
Answer:
C. FTP
Explanation:
FTP is a network protocol for transmitting files between computers.
Answer:
C. FIFO
Explanation:
The first-in, first-out (FIFO) page replacement algorithm is a low-overhead algorithm that requires work on the part of the operating system. On a page fault, the frame that has been in memory the longest is replaced.
Using FIFO algorithm implies that
a page which was brought into memory first will be removed first since variable was initialized very early. it is in the set of first in pages that will be removed.
It is the simplest page replacement algorithm. The operating system keeps track of all pages in the memory in a queue, the oldest page is in the front of the queue. When a page needs to be replaced page in the front of the queue is selected for removal that is first in first out.
A memory page containing a heavily used variable that was initialized very early and is in constant use is removed, then the page replacement algorithm used is called First In First Out.
Answer:
CPU clock cycles = Instruction count x CPI.
CPU execution time =
= CPU clock cycles x Clock cycle.
= Instruction count x CPI x Clock cycle.
T =
I.
x CPI x C
Explanation:
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