ITPEC FE Subject A April 2024 Question 12
There is a system where the operating status is continuously monitored. Which of the following is an appropriate sequence of work items in capacity planning that is conducted when a new task is applied to the system after several years of operation?
[Work items in capacity planning]
(i)Evaluate the proposed system configuration, assess its appropriateness, and conduct a review if necessary.(ii)Consider a proposal for the necessary system configuration based on the system characteristics, including factors such as the number of servers and whether parallel distributed processing is performed.(iii)Understand the performance information of the hardware or the environment inherent to the system based on the operating status of the system.(iv)Conduct a meeting with users to gather information about the new task, understand requirements such as the estimated number of processes, and determine the time required for processes.Explanation
(iii), (iv), (ii), (i) — capacity planning starts from the measured current state, adds the new demand, then designs and reviews a configuration.
- (iii) Use the monitored operating status to understand the current hardware performance and the system's characteristics.
- (iv) Meet the users to size the new task: estimated number of processes and required processing time.
- (ii) With current capacity and new demand known, propose a configuration: number of servers, parallel distributed processing.
- (i) Evaluate the proposal and review it if necessary.
Answer (b)
Why not others:
- •(a) — proposes a configuration (ii) before the new task's requirements (iv) are known, so there is nothing to size it against
- •(c) — evaluates the proposal (i) before examining the current operating status (iii), although the proposal depends on it
- •(d) — evaluates (i) a configuration before one has been proposed (ii)
Key rule: Capacity planning runs measure current usage, estimate the new load, design the configuration, evaluate it; no step can come before the data it depends on.
System Component · AI-written, may contain errors
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