WAEC Computer Studies 2017 Paper

Concept:A computer is a fast, accurate and reliable electronic machine, but it cannot think for itself.Explanation:Statement $\mathrm{I}$ is correct.Computers process data and perform calculations at extremely high speeds.Statement $\mathrm{II}$ is not correct.Computers do not think for the user.They only execute instructions and programs given to them by the user.They have no independent thought of their own.Statement $\mathrm{III}$ is correct.Computers are accurate when correct data and instructions are supplied to them.They do not make mistakes due to tiredness or carelessness.Statement $\mathrm{IV}$ is correct.Computers give credible, consistent and dependable results for the same input.Answer:Hence, the true advantages of a computer are $\mathrm{I}$, $\mathrm{III}$ and $\mathrm{IV}$ only.The correct option is therefore B.