DNSSEC Stands for “Domain Name System Security Extensions.” It is an extension of the standard domain name system (DNS), which translates domain names to IP addresses. DNSSEC improves security by validating the authenticity of the DNS data. The original domain name system was developed in the 1980s with minimal security. For example, when a host …
Domain Name A domain name is a unique name that identifies a website. For example, the domain name of the Tech Terms Computer Dictionary is “techterms.com.” Each website has a domain name that serves as an address, which is used to access the website. Whenever you visit a website, the domain name appears in the …
Domain Suffix A domain suffix is the last part of a domain name, consisting of the final “.” and two or more letters. A domain suffix is also known as a “top-level domain” or TLD. Popular domain suffixes include “.com,” “.net,” and “.org,” but there are more than a thousand domain suffixes approved by ICANN. …
Download Download can be used as either a verb or a noun. As a verb, it refers to the process of receiving data over the Internet. Downloading is the opposite of uploading, or sending data to another system over the Internet. As a noun, download may refer to either a file that is retrieved from …
Drive-By Download A drive-by download is a download that happens automatically when you visit a webpage. The download starts without you initiating it and may take place in the background without any notification. Drive-by downloads can occur on both legitimate and malicious websites. For example, if a hacker gains access to a trusted website, he …
Dynamic Website Dynamic websites contain Web pages that are generated in real-time. These pages include Web scripting code, such as PHP or ASP. When a dynamic page is accessed, the code within the page is parsed on the Web server and the resulting HTML is sent to the client’s Web browser. Most large websites are …
E-commerce E-commerce (or electronic commerce) refers to commercial activity conducted over the Internet. An e-commerce transaction occurs whenever someone buys goods or services from a business’ website. An e-commerce transaction can take lots of forms, such as a person buying a piece of software that they can download, ordering a pair of shoes to be …
E-mail Bankruptcy In this day and age, most of us receive several e-mails a day. Depending on your job, you may even receive dozens of daily messages that are not spam. While it is hard enough to keep up with this plethora of e-mails received in a single day, if you fall behind a few …
Edge Caching Edge caching is a mechanism content delivery networks (CDNs) use to cache Internet content in different locations around the world. Examples include website data, cloud storage, and streaming media. By storing copies of files in multiple “edge” locations, a CDN can deliver content to users more quickly than a single server can. CDNs …
Edge Server An edge server is a computer located at the “edge” of the Internet, serving users in a specific area. CDNs and edge computing services use edge servers to provide Internet content and computing power as fast as possible. Edge servers are distributed around the world at locations called points of presence, or PoPs. …