Different kinds of tests are given for different types of jobs. Most Civil Service tests are "paper and pencil" multiple-choice exams. Applicants for typing, word processing, and clerical jobs also take a typing skills test on a computer.
For some jobs, the examination is unassembled, and applicants are graded based on a Rating of Training & Experience. For other jobs, a scored oral interview may be used.
A civil service examination may consist of one or more of the above tests given in combination and weighted to determine your overall score on the examination.
Most Civil Service tests are not speed tests. You'll usually have about 2 hours to take between 80 and 140 questions, depending on the type of job you're applying for.