How many of these 20 do I need to get right to be on track?

About 16. A passing score works out to roughly 80 percent, so clearing 16 of 20 consistently across a few sets puts you in passing range.

Are these the same questions that appear on the real exam?

No. These are representative practice questions in the exam's style. The real exam draws from a much larger pool, which is why practice volume, not memorizing any single set, is what moves your score.

Where do I get more questions like these?

The Flying Prep DSST Introduction to Law Enforcement question bank has every question explained and reviewed against the current outline. Start a free trial and drill the topics your misses point to.

20 DSST Introduction to Law Enforcement practice questions, with answers and video walkthroughs

Twenty practice questions for DSST Introduction to Law Enforcement, in the real exam's style. Score 16 of 20 here and you are in passing range. Miss more than four, and the pattern of your misses points straight at the topic to review next. Every question below is explained on video, including why the wrong answers trap most test-takers.

What students preparing for this exam tell us is that steady practice in the exam's format, with an explanation for every miss, is what moves a score. Use these the same way: answer, check, and read why the wrong choices are tempting. For the full plan around them, see the DSST Introduction to Law Enforcement pillar guide.

Watch the full video walkthrough above, then test yourself on the twenty questions below. Each one is explained on the video, including why the wrong answers trap most test-takers.

Questions 1 to 5 (questions 1 to 5)

1. Who is generally credited with founding the first modern, organized police force? Sir Robert Peel. Sir Robert Peel established London's Metropolitan Police in 1829, the model for the modern police force. His name is why British officers were nicknamed bobbies, and his nine principles still shape policing today.

2. London's Metropolitan Police, the first modern police department, was established in what year? Eighteen Twenty-nine. Peel's Metropolitan Police Act created the force in eighteen twenty-nine. That date marks the start of organized, full-time, uniformed policing as we know it, replacing the older night-watch and constable system.

3. A central idea of Peel's principles is that the police owe their power and legitimacy to: The Consent and Cooperation of the Public. Peel's principle of policing by consent holds that the police are the public and the public are the police. Their authority rests on community approval and cooperation, not on force or fear.

4. In the American colonies and early United States, the official responsible for law enforcement in a county was the: Sheriff. The county sheriff is the oldest law enforcement office in the United States, carried over from England. Sheriffs handled arrests, jails, and the courts at the county level long before city police departments existed.

5. The early-twentieth-century reformer who pushed to professionalize American policing through training, education, and scientific methods was: August Vollmer. August Vollmer, chief in Berkeley, California, is called the father of modern American police professionalism. He championed officer training, college education, and the use of science in investigations.

Questions 6 to 10 (questions 6 to 10)

6. In the United States, the FBI, DEA, and ATF are all examples of agencies at which level of government? Federal. The Federal Bureau of Investigation, the Drug Enforcement Administration, and the Bureau of Alcohol, Tobacco, Firearms and Explosives are all federal agencies. They enforce national laws across state lines, unlike local police.

7. Most day-to-day police services in the United States, such as patrol and responding to 911 calls, are provided by: Municipal (city) Police Departments. Local municipal police departments handle the vast majority of routine policing. City and town departments provide patrol, traffic enforcement, and emergency response for the communities they serve.

8. A state-level agency that patrols highways and assists local departments is commonly called the: State Police. State police, also known as the highway patrol in many states, enforce traffic laws on state roads and support local agencies. They operate statewide rather than within a single city or county.

9. The traditional, top-down command structure of a police department, with ranks like officer, sergeant, lieutenant, and captain, is best described as: A Paramilitary Hierarchy. Police departments are organized as paramilitary hierarchies, with a clear chain of command and ranks modeled loosely on the military. Orders flow down the chain and accountability flows back up it.

10. Which federal agency is primarily responsible for protecting the President and investigating counterfeiting? The Secret Service. The Secret Service has a dual mission: protecting the President and other officials, and investigating financial crimes like counterfeiting. It was originally created to fight counterfeit currency.

Questions 11 to 15 (questions 11 to 15)

11. The constitutional protection against unreasonable searches and seizures comes from the: Fourth Amendment. The Fourth Amendment guards against unreasonable searches and seizures and generally requires a warrant based on probable cause. It is the foundation of most search-and-seizure law that officers must follow.

12. The Supreme Court case requiring police to warn suspects of their right to remain silent and to an attorney before custodial questioning is: Miranda V. Arizona. Miranda versus Arizona produced the Miranda warning. Before questioning a suspect in custody, police must advise them of the right to remain silent and the right to an attorney, or statements may be thrown out.

13. The case that established the exclusionary rule for state courts, barring illegally obtained evidence from trial, is: Mapp V. Ohio. Mapp versus Ohio extended the exclusionary rule to the states. Evidence seized in violation of the Fourth Amendment cannot be used at trial, which discourages illegal searches by police.

14. The Supreme Court case that permits a limited stop-and-frisk for weapons based on reasonable suspicion is: Terry V. Ohio. Terry versus Ohio allows an officer with reasonable suspicion to briefly stop a person and pat down their outer clothing for weapons. This brief detention is known as a Terry stop or stop and frisk.

15. To obtain a search warrant, an officer must demonstrate to a judge that there is: Probable Cause. Probable cause means there are reasonable grounds to believe a crime has occurred and that evidence will be found in the place to be searched. A judge must find probable cause before issuing a search warrant.

Questions 16 to 20 (questions 16 to 20)

16. In police work, patrol is best described as the: Backbone of Policing, Providing Visible Presence and Response. Patrol is often called the backbone of policing. Officers on patrol deter crime through visible presence, respond to calls for service, and are usually the first to arrive at an incident.

17. Discretion in law enforcement refers to: An Officer's Authority to Choose Among Possible Actions in a Situation. Discretion is the freedom officers have to decide how to act, such as whether to warn, cite, or arrest. Sound judgment is essential because officers cannot enforce every law in every situation equally.

18. The standard of proof required to convict a defendant of a crime is: Beyond a Reasonable Doubt. Criminal convictions require proof beyond a reasonable doubt, the highest standard in law. It is far stricter than the probable cause needed to make an arrest or the lower standards used in civil cases.

19. The three main components of the criminal justice system are the police, the courts, and: Corrections. The criminal justice system has three parts: police, courts, and corrections. Police make arrests, courts determine guilt and sentence, and corrections carries out the sentence through prisons, probation, and parole.

20. A code of ethics for law enforcement officers primarily exists to: Guide Officer Conduct and Build Public Trust. A law enforcement code of ethics sets standards for honesty, fairness, and respect for rights. Its purpose is to guide officer conduct and earn the public trust that policing by consent depends on.

What to do with your score

The point of twenty questions is not the twenty, it is the pattern. Mark which topic each miss came from, then spend your next session on that topic alone. None of it requires starting over, only tightening the spots that cost you points.

A single twenty-question set is a snapshot, not a study plan. To pass with margin you need volume: enough questions, in the exam's format, with explanations that turn a wrong answer into a correction. That is what Flying Prep's DSST Introduction to Law Enforcement practice is built for: every question explained, with a free trial before you decide.