TAILIEUCHUNG - Lecture TCP-IP protocol suite (3/e): Chapter 17 - Behrouz Forouzan

Chapter 17 - Domain name system: DNS. After studying this chapter you will be able to: Understand how the DNS is organized, know the domains in the DNS, know how a name or address is resolved, be familiar with the query and response formats, understand the need for DDNS. | Chapter 17 Upon completion you will be able to: Domain Name System: DNS Understand how the DNS is organized Know the domains in the DNS Know how a name or address is resolved Be familiar with the query and response formats Understand the need for DDNS Objectives TCP/IP Protocol Suite NAME SPACE The names assigned to machines must be unique because the addresses are unique. A name space that maps each address to a unique name can be organized in two ways: flat or hierarchical. The topics discussed in this section include: Flat Name Space Hierarchical Name Space TCP/IP Protocol Suite DOMAIN NAME SPACE The domain name space is hierarchical in design. The names are defined in an inverted-tree structure with the root at the top. The tree can have 128 levels: level 0 (root) to level 127. The topics discussed in this section include: Label Domain Name Domain TCP/IP Protocol Suite Figure Domain name space TCP/IP Protocol Suite Figure Domain names and .

• Quản trị mạng
• TCP IP protocol suite
• Lecture TCP IP protocol suite
• Network layer
• Internet protocol
• Domain name system
• Name space
• Data communications
• Lecture Data communications
• Physical layer
• Data link layer
• Application Layer
• Electrical Email
• Request and response messages
• Request and status lines
• Domain name space
• Domain names and labels