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In this course, we'll be talking about domain controllers.

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We'll take a look at what the main controller is and what is a global catalog.

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We'll have overview of domain controller as service records and much more.

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But before we begin, let's have a look at two quick questions to find out if you already know this

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information.

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So the question is, should a domain controller bear a global catalog?

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Take your time and press pause here to think about it.

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And the answer is global catalog placement affects how long a user takes to sign in.

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Therefore, you must carefully plan how to place global catalogs in a single domain environment.

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Every domain controller should host the global catalog because every domain controller already holds

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a complete copy of the domain in a multiple domain scenario.

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You need to consider user sign in times program dependencies the need for high availability of the global

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catalog and replication traffic when planning global catalog placement.

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Now, another question In a multiple domain forest, a copy of the global catalog should be stored on

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every domain controller.

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Is it true or false?

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And the answer is false.

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In a single domain, you should configure all domain controllers to hold a copy of the global catalog.

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However, in a multiple domain environment, the infrastructure master should not be a global catalog

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server unless all the domain controllers in the domain are also global catalog server.

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So please remember this information and consider when planning your infrastructure.

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Now some words about this course.

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Overview.

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Or better to say this section Overview which is overview of ads domain controllers.

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Because domain controllers authenticate all users and computers in the domain.

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Domain controller deployment is critical for the network to function correctly.

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This section examines domain controllers, the assigning process, and the importance of the DNS and

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that process.

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In addition, this section discusses the purpose of the global catalog.

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All domain controllers are essentially the same, with two exceptions raw DC that is read only domain

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controllers.

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They contain a redundant copy of the ads database, whereas other domain controllers have a read write

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copy.

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Also, certain operations can be performed only on specific domain controllers, which are called operations

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masters, and it will be discussed at the end of this section.

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After completing this section, you'll be able to describe the purpose of domain controllers.

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Understand what this is, what folder contains.

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Describe the purpose of the global catalog.

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You'll be able to describe the ads signing process and the importance of DNS and service records, or

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as the real records.

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In that process, you'll be able to explain the functions of the operations master and you'll be able

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to describe operations, master, role and season.

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So let's get started.