Mastering Java: The Ultimate Quiz for 'Thinking in Java'

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for your Java exam with our ultimate quiz based on 'Thinking in Java'. Engage with expertly crafted questions that enhance your learning process. Perfect for Java enthusiasts looking to solidify their knowledge!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is a semaphore?

A signaling mechanism
A data structure for concurrency
A type of exception
A memory management feature

The correct answer is: A signaling mechanism

A semaphore is a signaling mechanism used in computer science to control access to a shared resource between multiple threads or processes. This is done by using counters and the "wait" and "signal" operations. Option B, a data structure for concurrency, is incorrect because a semaphore itself is not a data structure, but rather uses data structures to function. Option C, a type of exception, is incorrect because a semaphore is not an error or exception, but rather a tool used to prevent potential errors. Option D, a memory management feature, is incorrect because a semaphore does not manage memory, but rather controls access to shared resources.