tailieunhanh - DNS Part I_tìm hiểu về DNS

Ban đầu do quy mô mạng ARPA NET (tiền thân của mạng Internet) còn nhỏ chỉ vài trăm máy, nên chỉ có một tập tin đơn lưu thông tin về ánh xạ tên máy thành địa chỉ IP. Trong đó tên máy chỉ là 1 chuỗi văn bản không phân cấp (flat name). Tập tin này được duy trì tại 1 máy chủ và các máy chủ khác lưu giữ bản sao của nó. Tuy nhiên khi quy mô mạng lớn hơn, việc sử dụng tập tin có các nhược điểm như sau: - Lưu lượng mạng và máy chủ. | Module 3: Resolving Names Overview Multimedia: Introduction to the Name Resolution Process Viewing Names on a Client Configuring Host Name Resolution Configuring NetBIOS Name Resolution Multimedia: Introduction to the Name Resolution Process The objective of this presentation is to provide a high-level overview of the name resolution process in the network infrastructure After this presentation, you will be able to: Explain what a host name is Explain what a NetBIOS name is Describe how the name resolution process works Lesson: Viewing Names on a Client How Names Are Mapped to IP Addresses What Are Host Names? What Are NetBIOS Names? How to View Names On a Client How Names Are Mapped to IP Addresses Name Resolution Service Computer44 Where is the Computer44 file? Computer44 1 2 3 Examples: A host name is the DNS name, of a device on a network, that is used to locate computers on the network What Are Host Names? FQDN . . FQDN DNS Suffix Host Name DNS Suffix Host Name Server1 = Server1 = msft “.” Root nwtraders training What Are NetBIOS Names? Server2 NetBIOS Name 16th character Services IP address Server2 00 Workstation Server2 20 Server Server2 01 Messenger A NetBIOS name is an identifier used by NetBIOS services running on a computer. It is made up of a 15-character name plus a 16th character (byte) denoting the service How to View Names on a Client Your instructor will demonstrate how to: View host names and DNS suffixes by using the Ipconfig utility View host names by using System Properties View NetBIOS names by using the Nbtstat command View your computer’s NetBIOS name by using System Properties Rename a computer Practice: Viewing Names on a Client In this practice, you will view names on a client Lesson: Configuring Host Name Resolution The Host Name Resolution Process Client Resolver Cache How to View and Flush the Client . | Module 3: Resolving Names Overview Multimedia: Introduction to the Name Resolution Process Viewing Names on a Client Configuring Host Name Resolution Configuring NetBIOS Name Resolution Multimedia: Introduction to the Name Resolution Process The objective of this presentation is to provide a high-level overview of the name resolution process in the network infrastructure After this presentation, you will be able to: Explain what a host name is Explain what a NetBIOS name is Describe how the name resolution process works Lesson: Viewing Names on a Client How Names Are Mapped to IP Addresses What Are Host Names? What Are NetBIOS Names? How to View Names On a Client How Names Are Mapped to IP Addresses Name Resolution Service Computer44 Where is the Computer44 file? Computer44 1 2 3 Examples: A host name is the DNS name, of a device on a network, that is used to locate computers on the network What Are Host Names? FQDN . .

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