lesson04

lesson04 - Configuring and Managing the DNS Server Role the...

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Configuring and Managing Configuring and Managing the DNS Server Role the DNS Server Role Lesson 4
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Skills Matrix Skills Matrix Technology Skill Objective Domain Objective # Installing the DNS Server Role Configure a Domain Name  System (DNS) server 2.1 Introducing DNS Zones Configure DNS zones 2.2 Configuring DNS Resource  Records Configure DNS records 2.3 Configuring Active Directory - Integrated Zones Configure DNS replication 2.4 Introducing the DNS Name Resolution Process Configure name resolution for client 2.5
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Domain Name System (DNS) Domain Name System (DNS) Because DNS plays such a key role in Windows Server 2008. Without DNS, your network will most likely not function — clients won’t be able to resolve names to Internet Protocol (IP) addresses. In addition, Active Directory clients use DNS to locate domain controllers.
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HOST file HOST file Before DNS, name resolution was handled through the use of text files called HOSTS files that were stored locally on each computer. The HOSTS file listed each name of the host and its corresponding IP address. Whenever a new host was added to the network, an administrator would manually update the HOSTS file with the new host name or IP address information.
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Domain Name System Domain Name System DNS because of the following benefits: Scalability Constancy Ease of Use Simplicity
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DNS Namespaces DNS Namespaces A DNS namespace is a hierarchical, tree- structured list of DNS host names, starting at an unnamed root that is used for all DNS operations. Each domain can have additional child domains.
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DNS Namespaces DNS Namespaces
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DNS Namespaces DNS Namespaces The DNS namespace has a hierarchical structure and each DNS domain name is unique within a namespace. At the top of the Internet DNS namespace is the root domain. The root domain is represented by “.” (a period).
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DNS Namespaces DNS Namespaces Under the DNS root domain, the top-level domains , or first-level domains, are organizational types such as .org, .com, and .edu. Generic — generic, top-level domain names. Country code — Examples of country code domain names are .uk., .jp, and .us. Infrastructure domain — .arpa is the Internet’s infrastructure domain name.
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DNS Namespaces DNS Namespaces
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Traditional Top-Level Domain Names Traditional Top-Level Domain Names com – Commercial. .edu – Education. .gov – Agencies of U.S. federal government. .net – Computers of network providers and ISPs. .org – Nongovernmental and nonprofit organizations.
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DNS Namespaces DNS Namespaces Second-level domains are registered to individuals or organizations. Second-level DNS domains can have
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lesson04 - Configuring and Managing the DNS Server Role the...

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