Book Image

Programming in C#: Exam 70-483 (MCSD) Guide

By : Simaranjit Singh Bhalla, SrinivasMadhav Gorthi
Book Image

Programming in C#: Exam 70-483 (MCSD) Guide

By: Simaranjit Singh Bhalla, SrinivasMadhav Gorthi

Overview of this book

Programming in C# is a certification from Microsoft that measures the ability of developers to use the power of C# in decision making and creating business logic. This book is a certification guide that equips you with the skills that you need to crack this exam and promote your problem-solving acumen with C#. The book has been designed as preparation material for the Microsoft specialization exam in C#. It contains examples spanning the main focus areas of the certification exam, such as debugging and securing applications, and managing an application's code base, among others. This book will be full of scenarios that demand decision-making skills and require a thorough knowledge of C# concepts. You will learn how to develop business logic for your application types in C#. This book is exam-oriented, considering all the patterns for Microsoft certifications and practical solutions to challenges from Microsoft-certified authors. By the time you've finished this book, you will have had sufficient practice solving real-world application development problems with C# and will be able to carry your newly-learned skills to crack the Microsoft certification exam to level up your career.
Table of Contents (22 chapters)
17
Mock Test 1
18
Mock Test 2
19
Mock Test 3

Managed code versus unmanaged code

In this section, we will understand the difference between managed and unmanaged code. Recall that we also studied this in Chapter 1, Learning the Basics of C#. Therefore, for a quick recap, we will just revise the concepts that we covered there.

These concepts apply not just to the C# language, they are also relevant to all languages written in the .NET Framework. The following are some of the differences between managed and unmanaged code:

  • Managed code is executed by the Common Language Runtime (CLR). Due to this, the code is independent of the underlying OS. On the other hand, unmanaged code is code that is executed by the OS directly.
  • In the case of managed code, the code is independent of the underlying framework or the OS. CLR compiles the code into an Intermediate Language (IL) code, which is then compiled to machine code. IL code consists...