Which of the following is true concerning the mainframe?
Options: It is the same thing as client/server., Requires someone to decide which code should be on the workstation or the server., Mission-critical systems have tended to remain there., All of the above.
Options: An exact match is necessary in a SELECT statement., An exact match is not possible in a SELECT statement., An exact match is necessary in a CREATE statement., An exact match is not possible in a CREATE statement.
Options: running the system with line data by the actual user, making sure that the new programs do in fact process certain transactions according to Specifications, is checking the logic of one or more programs in the candidate system, testing changes made in an existing or a new program
Four routers have to be interconnected in a point-to-point Network. Each pair of root us may connected by a high-speed line, a medium speed line or a low speed line. Find the total number of topologies.
Which of the following statements is true about symmetric multiprocessing?
Options: A single copy of the operating system resides in each processor., Useful for situations where data must remain in memory to process., Bottlenecks increase with uniprocessor systems because tasks are not shared., The problems of memory contention are unlikely.
The difference between a multiplexer and a statistical multiplexer is
Options: Statistical multiplexers need buffers while multiplexers do not need buffers, Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol, Multiplexers often waste the output link capacity while statistical multiplexers optimize its use, Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM)
Options: Combines the output from no more than two queries and must include the same number of columns., Combines the output from no more than two queries and does not include the same number of columns., Combines the output from multiple queries and must include the same number of columns., Combines the output from multiple queries and does not include the same number of columns.
Options: a. Margin that is added to the left margin when printing
b. Margin that is added to right margin when printing
c. Margin that is added to the binding side of page when printing
d. Margin that is added to the outside of the page when printing