Domain Name System

DNS (domain name system or server) domain name... 

C. The Domain Name System (DNS) is used to resolve Internet host names or domain names to IP addresses. See Chapter 18 for more information. 

DNS The Domain Name System manages Internet host and domain... 

A, B, C, D. A proper IP address and subnet mask are essential for any sort of network communication. However, to reach the Internet, a default gateway, which is the IP address of the router your machine uses to access the Internet, must be configured. You also need the Domain Name System (DNS) server, so you can type www.yahoo.com instead of having to remember the numeric IP address. 

Domain Name System (DNS) DNS allows TCP/IP-capable users anywhere in the world to find resources in other companies or countries by using their domain name. Each domain is an independent namespace for a particular organization, and DNS servers manage requests for information about the IP addresses of particular DNS entries. DNS is used to manage all names on the Internet. 

Distribution network planning, 1472-1475 Distributor relationships, 557 Diversity, as TQL success factor, 1805 Division of labor, 1264, 1266-1267 DML, see Data manipulation language DMU, see Digital mock-up DNS, see Domain name system Documentation archiving project, 1349... 

DOF, see Degrees of freedom Dollars, constant vs. actual, 2397-2398 Domain name system (DNS), 237, 240, 242-243... 

But there are weaknesses, or at least obvious points of attack, in the core of the Internet. These include routing announcements, the domain name system (DNS), denial-of-service (DOS) attacks, and host weaknesses in the routers themselves. 

Although the domain name system (DNS) is technically not part of the TCP/ IP protocol, it is nearly essential for Internet operation. For example, one could connect to http //207.171.181.16/, but nearly all Internet users prefer http // www.amazon.com. DNS translates from name to number using a database distributed throughout the Internet. The translation starts at the root DNS servers, which know where to find. go,. eddo,. czar, etc. Servers databases contain long lists of subdomains—there are tens of millions in the. com database—that point to the name servers for individual domains. For example, DNS tells us that one of the servers that knows about the hosts in amazon.com is at IP address 207.171.167.7. 

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