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  2. Customer support - Wikipedia

    en.wikipedia.org/wiki/Customer_support

    Customer Support is a range of services to assist customers in making cost effective and correct use of a product. It includes assistance in planning, installation, training, troubleshooting, maintenance, upgrading, and disposal of a product. [1] Regarding technology products such as mobile phones, televisions, computers, software products or ...

  3. Domain Name System - Wikipedia

    en.wikipedia.org/wiki/Domain_Name_System

    t. e. The Domain Name System ( DNS) is a hierarchical and distributed name service that provides a naming system for computers, services, and other resources on the Internet or other Internet Protocol (IP) networks. It associates various information with domain names (identification strings) assigned to each of the associated entities.

  4. Multicast DNS - Wikipedia

    en.wikipedia.org/wiki/Multicast_DNS

    Multicast DNS. In computer networking, the multicast DNS ( mDNS) protocol resolves hostnames to IP addresses within small networks that do not include a local name server. It is a zero-configuration service, using essentially the same programming interfaces, packet formats and operating semantics as unicast Domain Name System (DNS).

  5. List of DNS record types - Wikipedia

    en.wikipedia.org/wiki/List_of_DNS_record_types

    Address record. Returns a 32-bit IPv4 address, most commonly used to map hostnames to an IP address of the host, but it is also used for DNSBLs, storing subnet masks in RFC 1101, etc. AAAA. 28. RFC 3596 [2] IPv6 address record. Returns a 128-bit IPv6 address, most commonly used to map hostnames to an IP address of the host.

  6. Reverse DNS lookup - Wikipedia

    en.wikipedia.org/wiki/Reverse_DNS_lookup

    Reverse DNS lookup. In computer networks, a reverse DNS lookup or reverse DNS resolution ( rDNS) is the querying technique of the Domain Name System (DNS) to determine the domain name associated with an IP address – the reverse of the usual "forward" DNS lookup of an IP address from a domain name. [1] The process of reverse resolving of an IP ...

  7. DNS-based Authentication of Named Entities - Wikipedia

    en.wikipedia.org/wiki/DNS-based_Authentication...

    WireGuard. v. t. e. DNS-based Authentication of Named Entities ( DANE) is an Internet security protocol to allow X.509 digital certificates, commonly used for Transport Layer Security (TLS), to be bound to domain names using Domain Name System Security Extensions ( DNSSEC ). [1]

  8. Comparison of DNS server software - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_DNS_server...

    Knot DNS. Knot DNS is a free software authoritative DNS server by CZ.NIC. Knot DNS aims to be a fast, resilient DNS server usable for infrastructure (root and TLD) and DNS hosting services. Knot DNS supports DNSSEC signing and among others hosts root zone (B, K, and L root name servers ), several top-level domains .

  9. Technical support - Wikipedia

    en.wikipedia.org/wiki/Technical_support

    Technical support, also known as tech support, is a call centre type customer service provided by companies to advise and assist registered users with issues concerning their technical products. [1] Traditionally done on the phone, technical support can now be conducted online or through chat. At present, most large and mid-size companies have ...