📝 Language based Protection in Java

Q1. Which Java feature automatically checks that an index used to access an array is within valid bounds?

💡 Difficulty: easy | ✅ Correct: A

Q2. You have a custom class loader that loads untrusted classes. To prevent these classes from opening network sockets, which permission should be omitted from the policy granted to the loader?

💡 Difficulty: medium | ✅ Correct: A

Q3. A Java program loads a plugin JAR signed by a different certificate than the main application. The plugin tries to invoke a private method of a class in the main application. Assuming both are loaded by separate class loaders, which statement is correct?

💡 Difficulty: hard | ✅ Correct: B