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PROBLEM SOLVING AND PYTHON PROGRAMMING QUIZ

1) What is the first step in problem-solving? A) Writing code B) Debugging C) Understanding the problem D) Optimizing the solution Answer: C 2) Which of these is not a step in the problem-solving process? A) Algorithm development B) Problem analysis C) Random guessing D) Testing and debugging Answer: C 3) What is an algorithm? A) A high-level programming language B) A step-by-step procedure to solve a problem C) A flowchart D) A data structure Answer: B 4) Which of these is the simplest data structure for representing a sequence of elements? A) Dictionary B) List C) Set D) Tuple Answer: B 5) What does a flowchart represent? A) Errors in a program B) A graphical representation of an algorithm C) The final solution to a problem D) A set of Python modules Answer: B 6) What is pseudocode? A) Code written in Python B) Fake code written for fun C) An informal high-level description of an algorithm D) A tool for testing code Answer: C 7) Which of the following tools is NOT commonly used in pr...

Difference between JDK, JRE and JVM

Difference between JDK,JRE and JVM
          JDK, JRE and JVM are core concepts of java programming language. Although they all look similar and as a programmer we don't care about this concepts a lot, but they are different and meant for specific purpose.

JDK
          Java development kit is the core component of java environment and provides all the tools, executables and binaries required to compile, debug and execute a java program. JDK is a platform specific software and thats why we have separate installers for Windows, Mac and Unix system. We can say that JDK is superset of JRE. Since it contains JRE with java compiler, debugger and core classes. Current version of JDK is 16 also known as java 16.

JVM 
          JVM is the heart of java programming language. when we run a program, JVM is responsible to converting Byte code to the machine specific code. JVM is also platform dependent and provides core Java functions like memory management, garbage collection, security etc. JVM is customizable and we can use java option to customize it, for example allocating minimum and maximum memory to JVM. JVM is called virtual because it provides a interface that does not depend on the underlying operating system and machine hardware. This independence from hardware and operating system is what makes java program write-once run- anywhere.

JRE
          Java Runtime Environment (JRE) is the implementation of JVM, it provides platform to execute java programs. JRE consists of JVM and java binaries and other classes to execute any program successfully. JRE doesn't contain any development tool like java compiler, debugger etc. If you want to execute any java program, you should have JRE installed but we don't need JDK for running any java program.









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