Original link: Which type is not somewhere in the Java Collections framework? / LinkedIn / Lew Bloch.
LinkedIn tests are often a bit silly. And this test is really about detecting spelling erros (wrong case) and not about deep Java knowledge.
But still 12% correct 88% wrong in a 4 options question is exceptionally bad. A random number generatopr would have scored 25% correct and 75% wrong!
The average developer on LinkedIn is not super sharp.