A(n)______is an interface which you interact with your computer and which uses graphics such as an image of a file folder
a. application programming interface (API)
b. graphical user interface (GUI)
c. operating system (OS)
3.The_____monitors the print requests and the busy state of the printer.
a. buffer
b. print queue
c. spooling program
4.Which is stored on a flash ROM (read-only memory) chip in a piece of hardware?
a. firmware.
b. platform
c. virtual memory
5.Software that has its code published and made available to the public, enabling anyone to copy, modify, and redistribute it without paying fees is called _____.
a. embedded operating systems
b. firmware
c. open source
c. open source
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Consider the table Professor with attributes Id, Name, Dept, Salary, and Rank and primary key Id, and the statements:
where ssn is a host variable and sal is a literal.
(a) Give an ecient query plan for S1 and state what index (search key, clustered, nonclustered,
B+ tree, hash) is used.
(b) Now suppose, in addition to optimizing S1, we are equally concerned with optimizing the
execution of S2. Assuming sal is a large number (most rows do not satisfy the WHERE
clause) describe the query plan you would like the optimizer to use and any changes that
might need to be made to your previous answer. State what index (search key, clustered,
nonclustered, B+ tree, hash) is used for each statement. Explain your reasoning.
(c) Redo the previous part assuming that sal is a small number (most rows satisfy the
WHERE clause). Explain your reasoning.
A field can store a web site address or the path to a file if the ________ data type is applied to the field
Fill in the blank(s) with correct word
?_____ is the process of putting a new information system online and retiring the old system.
A. ?System integration B. ?Online system documentation C. ?System override D. ?System changeover
VHD based disks are limited to what size?
A. 512 GB B. 1 TB C. 2 TB D. 2 PB