DSSAT Investigative Principles 2

Question 1

What is the 'fruit of the poisonous tree' doctrine in federal criminal law?

Accepted Answer

Evidence obtained illegally, and any evidence derived from it, is inadmissible

Answer

Evidence obtained through biological contamination must be retested

Answer

Witness testimony from family members of suspects is inadmissible

Answer

Evidence collected abroad under foreign law is inadmissible in U.S. courts

Question 2

During an interview, a subject begins to contradict their earlier statements. What is the most appropriate investigative response?

Accepted Answer

Note the inconsistencies and continue the interview without confrontation, then follow up later

Answer

Immediately arrest the subject for making false statements

Answer

Terminate the interview and submit a report of investigation citing uncooperativeness

Answer

Ignore the inconsistencies to maintain rapport with the subject

Question 3

What is the primary purpose of conducting a 'cold hit' database search during a criminal investigation?

Accepted Answer

To match forensic evidence (e.g., DNA, fingerprints) against databases of known offenders without a specific suspect

Answer

To verify the subject's financial records with cold weather data centers

Answer

To freeze a suspect's digital assets during an investigation

Answer

To retrieve surveillance footage from government servers for cold case files

Question 4

Which type of surveillance technique involves agents maintaining continuous observation of a subject over an extended period across multiple locations?

Accepted Answer

Moving (mobile) surveillance

Answer

Static surveillance

Answer

Technical surveillance

Answer

Counter-surveillance

Question 5

What legal standard must be met before a federal agent can obtain a search warrant?

Accepted Answer

Probable cause to believe evidence of a crime will be found at the location

Answer

Reasonable suspicion that a crime has been committed

Answer

Preponderance of the evidence showing guilt

Answer

Beyond a reasonable doubt that the target is committing a crime

Question 6

When a DS Special Agent conducts an overseas investigation, which principle governs the admissibility of evidence gathered in a foreign country?

Accepted Answer

The exclusionary rule applies only to U.S. territory; foreign-gathered evidence has more flexible admissibility standards

Answer

The Silver Platter Doctrine — foreign-gathered evidence is always admissible in U.S. courts

Answer

All evidence must be gathered under the same Fourth Amendment standards as domestic evidence

Answer

The Vienna Convention on Diplomatic Relations governs all overseas evidence collection