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A content delivery network, or content distribution network (CDN), is a geographically distributed network of proxy servers and their data centers. The goal is to provide high availability and performance by distributing the service spatially relative to end users. CDNs came into existence in the late 1990s as a means for alleviating the performance bottlenecks of the Internet as the Internet was starting to become a mission-critical medium for people and enterprises. Since then, CDNs have grown to serve a large portion of the Internet content today, including web objects (text, graphics and scripts), downloadable objects (media files, software, documents), applications (e-commerce, portals), live streaming media, on-demand streaming media, and social media sites.

CDNs are a layer in the internet ecosystem. Content owners such as media companies and e-commerce vendors pay CDN operators to deliver their content to their end users. In turn, a CDN pays Internet service providers (ISPs), carriers, and network operators for hosting its servers in their data centers.

CDN is an umbrella term spanning different types of content delivery services: video streaming, software downloads, web and mobile content acceleration, licensed/managed CDN, transparent caching, and services to measure CDN performance, load balancing, Multi CDN switching and analytics and cloud intelligence. CDN vendors may cross over into other industries like security, with DDoS protection and web application firewalls (WAF), and WAN optimization.

A CD-ROM (, compact disc read-only memory) is a pre-pressed optical compact disc that contains data. Computers can read—but not write or erase—CD-ROMs, i.e. it is a type of read-only memory.

INFO: Full form for CHS is Candidate Harmonized Standard in Computer and Networking category
CHS also has other full forms in other categories mentioned below.

In statistics, a moving average (rolling average or running average) is a calculation to analyze data points by creating a series of averages of different subsets of the full data set. It is also called a moving mean (MM) or rolling mean and is a type of finite impulse response filter. Variations include: simple, cumulative, or weighted forms (described below).

Given a series of numbers and a fixed subset size, the first element of the moving average is obtained by taking the average of the initial fixed subset of the number series. Then the subset is modified by "shifting forward"; that is, excluding the first number of the series and including the next value in the subset.

A moving average is commonly used with time series data to smooth out short-term fluctuations and highlight longer-term trends or cycles. The threshold between short-term and long-term depends on the application, and the parameters of the moving average will be set accordingly. For example, it is often used in technical analysis of financial data, like stock prices, returns or trading volumes. It is also used in economics to examine gross domestic product, employment or other macroeconomic time series. Mathematically, a moving average is a type of convolution and so it can be viewed as an example of a low-pass filter used in signal processing. When used with non-time series data, a moving average filters higher frequency components without any specific connection to time, although typically some kind of ordering is implied. Viewed simplistically it can be regarded as smoothing the data.

INFO: Full form for MA is Mobile Service in Computer and Networking category
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INFO: Full form for PT is Portable radio Terminal in Computer and Networking category
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INFO: Full form for PT is Project Team (ETSI) in Computer and Networking category
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INFO: Full form for NBC is Non-backward Compatible in Computer and Networking category
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INFO: Full form for OSHA is Occupational Safety and Health Administration (U.S.) in Computer and Networking category
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INFO: Full form for MES is Mobile Earth Station in Computer and Networking category
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INFO: Full form for NTCA is National Telephone Cooperative Association in Computer and Networking category
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INFO: Full form for UU, is U-U User to User in Computer and Networking category

INFO: Full form for RTU is Right to Use in Computer and Networking category
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INFO: Full form for DES is Data Encryption Standard (U.S.) in Computer and Networking category
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INFO: Full form for DES is Digital Extend Signal (T.30) in Computer and Networking category
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INFO: Full form for DES is Draft European Standard in Computer and Networking category
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