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Authoritative name servers can be primary name servers, also known as master servers, i.e. they contain the original set of data, or they can be secondary or slave name servers, containing data copies usually obtained from synchronization directly with the primary server, either via a DNS mechanism, or by other data store synchronization ...
Ubuntu (/ ʊ ˈ b ʊ n t uː / ⓘ uu-BUUN-too) [9] is a Linux distribution derived from Debian and composed mostly of free and open-source software. [10] [11] [12] Ubuntu is officially released in multiple editions: Desktop, [13] Server, [14] and Core [15] for Internet of things devices [16] and robots.
dnsmasq caches DNS records, reducing the load on upstream nameservers and improving performance, and can be configured to automatically pick up the addresses of its upstream servers. dnsmasq accepts DNS queries and either answers them from a small, local cache or forwards them to a real, recursive DNS server.
Ubuntu derivative: x86, x86-64: Open source: Free with paid services available: Zentyal is an open-source router/firewall and small business server. Zeroshell: Discontinued: Linux distribution: x86, ARM: GPL V2: Free (contribution required for some graphing functions) Web-administrative router/firewall live CD with QoS features.
An online edition of the Ubuntu Software Center was released, the Ubuntu Apps Directory. The Web store shows the same content as the Software Center application, with a download button that opens the application if running Ubuntu or a link to download the Ubuntu operating system installer if running a different operating system. [9]
A name server is a computer application that implements a network service for providing responses to queries against a directory service.It translates an often humanly meaningful, text-based identifier to a system-internal, often numeric identification or addressing component.
Ubuntu releases are also given code names, using an adjective and an animal with the same first letter – an alliteration, e.g., "Dapper Drake".With the exception of the first two releases, code names are in alphabetical order, and except for the first three releases, the first letters are sequential, allowing a quick determination of which release is newer.
In computing, a directory service or name service maps the names of network resources to their respective network addresses.It is a shared information infrastructure for locating, managing, administering and organizing everyday items and network resources, which can include volumes, folders, files, printers, users, groups, devices, telephone numbers and other objects.