Final answer:
Judicial power: President Eisenhower sending federal troops into Little Rock; Presidential emergency power: Protection of black students in Little Rock; Executive privilege: President Obama denying congressional request
Step-by-step explanation:
Judicial power: President Eisenhower sending federal troops into Little Rock, Arkansas, against the wishes of the governor can be described as an exercise of judicial power.
This is because it involved the president enforcing a Supreme Court order to racially integrate public schools.
Presidential emergency power: President Eisenhower's action in Little Rock can also be considered an exercise of presidential emergency power.
This is because he used his authority as president to uphold federal courts and ensure the protection of black students attempting to enter the school.
Executive privilege: President Obama denying a congressional request for records concerning Operation Fast and Furious represents an example of executive privilege.
Executive privilege refers to the president's right to confidentiality and refusal to testify before Congress or the courts.