Archive for February 27, 2007

Question 41

Which of the following is a correct statement concerning a reentrant program?

a) Once executed, correct results can be obtained,even if it is executed repeatedly without being reloaded
b) It can be executed regardless of the address where it is located in the real memory
c) It is divided into multiple segments and each segment can be loaded for execution
d) Correct results can be obtained, even if multiple tasks are executed concurrently.

answer

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Question 40

Which statement correctly describes a data – mining tool?

a) It provides information that cannot be obtained from existing information systems, but can be obtained by accumulating information generated in a company by topic and in chronological order.
b) It provides various information analysis functions, such as the function to display aggregated data quickly and easily for users.
c) It performs statistical processing on large volumes of accumulated data to assist users in finding something like laws or rules.
d) It is a subjective basis database that allows users to use information effectively. The search time can be reduced by storing results of performing aggregation processing, etc in advance.

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Question 39

Which statement correctly defines MIME used on the Internet?

a) It is a descriptive language for hypertexts used on Web sites.
b) It is a data transfer protocol between clients and servers on the Internet
c) It is an addressing system for uniquely identifying resources on the Internet.
d) It is a standard for transmitting multimedia information such as audio and image data in e-mail messages.

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Question 38

One thousand machines whose failure rate is 1.0×10-6 (times/second) are in operation. What is the closest average number of machines that have not failed after 200 hours of operation?

You may use values read from the following graph of the exponential function for calculation. In the graph, the failure rate is represented by (times/second) and the running time is represented by t (second).

Exponential Function F(t)=exp(-λt)

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a) 50
b) 500
c) 950
d) 995

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Question 37

There is a system that operates as a whose when both of two units are operating. When MTBF values of these two units are 270 hours and 540 hours respectively, what is the MTBF value for the entire system?

a) 150
c) 180
c) 270
d) 405

answer

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Question 36

Which of the following applies to throughput ?

a) The time elapsed from the time a job was put into a system until the final result was obtained. It is affected by the input/output speed,, overhead time, etc.
b) The job running rate obtained by “job runtime ÷ operating time”.
c) The number of jobs that can run concurrently. The upper limit is decided depending on the system resources used.
d) The number of jobs executed in a unit of time. Spooling increases throughput.

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Question 35

. Which of the following evaluation values is demonstrated by the benchmark test SPECint ?
a) The relative value of processing time when compared to a reference machine
b) Turnaround time
c) The number of transactions per unit time
d) The performance data of each processor, main memory, and input/output unit

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