Reciprocal Link Definition
A reciprocal link is a mutual link between two websites. For example, if website A links to website B, then website B can add a reciprocal link back to website A. The result of a reciprocal link is two websites that link to each each other.
Reciprocal links are typically created for one of two purposes: 1) to establish a partnership between two websites, or 2) to boost search engine ranking. If two websites provide related information, the webmasters may decide it mak...
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Web 2.0 Definition
Web 2.0 Definition
Web 2.0 is a term that was introduced in 2004 and refers to the second generation of the World Wide Web. The term "2.0" comes from the software industry, where new versions of software programs are labeled with an incremental version number. Like software, the new generation of the Web includes new features and functionality that was not available in the past. However, Web 2.0 does not refer to a specific version of the Web, but rather a series of technological improvements.
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Usenet Definition
Usenet Definition
Usenet is collection of online discussions that are organized into newsgroups. Users may create their own discussion topics or contribute to existing threads within a topic. Some newsgroups provide forums for questions and answers, while others are designed primarily for file sharing.
Usenet started in 1980 as a medium for discussing topics online, similar to a bulletin board system (BBS). However, instead of being hosted on a single server, Usenet newsgroups were hosted on hu...
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Client-Server Model Definition
Client-Server Model Definition
The client-server model describes how a server provides resources and services to one or more clients. Examples of servers include web servers, mail servers, and file servers. Each of these servers provide resources to client devices, such as desktop computers, laptops, tablets, and smartphones. Most servers have a one-to-many relationship with clients, meaning a single server can provide resources to multiple clients at one time.
When a client requests a connecti...
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ICMP Definition
ICMP Definition
Stands for "Internet Control Message Protocol." When information is transferred over the Internet, computer systems send and receive data using the TCP/IP protocol. If there is a problem with the connection, error and status messages regarding the connection are sent using ICMP, which is part of the Internet protocol.
When one computer connects to another system over the Internet (such as a home computer connecting to a Web server to view a website), it may seem like a qu...
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MMS Definition
MMS Definition
Stands for "Multimedia Messaging Service." MMS is mobile phone service that allows users to send multimedia messages to each other. This includes images, videos, and sound files.
MMS is an extension of SMS, which is used to send and receive text messages. Like text messages, multimedia messages are first transmitted to a central server maintained by the cellular service provider. Once the message has been received by the server, it is forwarded to the recipient. If the recipient'...
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IPv6 Definition
IPv6 Definition
Every computer system and device connected to the Internet is located by an IP address. The current system of distributing IP addresses is called IPv4. This system assigns each computer a 32-bit numeric address, such as 120.121.123.124. However, with the growth of computers connected to the Internet, the number of available IP addresses are predicted to run out in only a few years. This is why IPv6 was introduced.
IPv6, also called IPng (or IP Next Generation), is the next plann...
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IPv4 Definition
IPv4 Definition
IPv4 is the most widely used version of the Internet Protocol. It defines IP addresses in a 32-bit format, which looks like 123.123.123.123. Each three-digit section can include a number from 0 to 255, which means the total number of IPv4 addresses available is 4,294,967,296 (256 x 256 x 256 x 256 or 2^32).
Each computer or device connected to the Internet must have a unique IP address in order to communicate with other systems on the Internet. Because the number of systems conn...
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Raw Data Definition
Raw Data Definition
Raw data is unprocessed computer data. This information may be stored in a file, or may just be a collection of numbers and characters stored on somewhere in the computer's hard disk. For example, information entered into a database is often called raw data. The data can either be entered by a user or generated by the computer itself. Because it has not been processed by the computer in any way, it is considered to be "raw data." To continue the culinary analogy, data that ha...
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Zone File Definition
Zone File Definition
A zone file is stored on a name server and provides information about one or more domain names. Each zone file contains a list of DNS records with mappings between domain names and IP addresses. These records define the IP address of a domain name, the reverse lookup of an IP to other domains, and contain DNS and mail server information.
Because zone files are plain text files, they can be edited quickly and easily. However, this also means that if unauthorized users gain a...
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