A database system includes ________.
a) the data in the database.
b) the hardware on which the data resides.
c) the software that controls access to the data.
d) all of the above
d) all of the above
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Match the following people with their contribution to the field of Computer Science, where a name can be used more than once.
A. John Atanasoff and Cilfford Berry B. Augusta Ada Byron C. Charles Babbage D. Luigi F. Menabrea E. John Mauchly and J. Presper Eckert. F. John von Neumann ________ Inventor of the Analytical Engine ________ Published a paper describing the Analytical Engine in French ________ Inventor of the ABC ________ Wrote detailed instructions for numerical computations, thought to be the first computer program. ________ proposed a computing model used in most digital computers ________ Inventor of the ENIAC ________ envisioned the multidisciplinary potential of the Analytical Engine
Write code that sets each element of a boolean array called flags to alternating values (true at index 0, false at index 1, etc.).
What will be an ideal response?
Contiguous file allocation is inappropriate for general-purpose file systems because ________.
a) successive logical records typically are physically adjacent to one another b) if a file grows beyond the size originally specified and there are no adjacent free blocks, the file must be transferred to a new area of adequate size c) locating file data is complicated, because the system must store multiple memory addresses to reference a file. d) all of the above
Which kind of cabling would you select when you need to cover distances that span kilometers?
A. coax B. UTP C. STP D. fiber-optic