RAM (Random access memory) – RAM is the place in a computer where the operating system, application programs, and data in current use are kept so that they can be quickly accessed by the computer’s processor. RAM chips are installed on the motherboard and the capacity and access speed of the RAM chips is relational to the computer’s performance. You can never go wrong by having 512 megabytes of fast-access RAM in your computer.
As there are so many different types, speeds and storage capacities of RAM on the market, you really should consult a computer professional (ie: computer store) prior to purchasing RAM for your computer.

Range - The distance between an AP and a client (or between two APs, see Workgroup Bridge) over which Wi-Fi transmissions can be successful. The greater the range, the greater the attenuation of a signal and the lower the overall throughput will be.

Rate card - Publishers compile rate cards to list prices for advertising on their sites. Larger sites usually give rates on a CPM basis. Technical details regarding banner size and positioning may also be included.

RDC (Remote Deposit Capture) - The action of taking a picture of a check and submitting this digital copy as a process of depositing funds from one bank to another through the ACH network.

Real player - a plug-in required to listen to audio encoded in the Real Audio format.

Real Time – Real time refers to a system that responds to input immediately. A real time anti-virus program would catch the existence of a virus-infected file before the virus had a chance to infect your operating system. A real time spell checker would immediately inform you of a misspelled word.

Real-time selling rule - Called “OpenX Market Rule” for OpenX products. Enables OpenX Ad Server, Bidder, and SSP customers to specify what inventory is eligible for RTB buyers to purchase. Publishers can use this tool to set specific criteria for selling their inventory, such as: inventory targeting, floor price, and ad quality filters.

Rear-Facing Camera - A camera on the back of the phone, allowing for picture taking in front of the user.

Reconciliation - The act of balancing debits, credits, and totals between two or more systems.

Reconnect Service - Resuming regular service on a mobile device after you have suspended it for a period of time.

 Recurring Transaction - A credit card transaction permitted by a customer that is periodically charged to the customer's account on a weekly, monthly, or quarterly basis. 

Redbox  Instant by Verizon - A movie service that brings you Hollywood’s newest releases, along with a rich catalog of popular movies. You can watch movies on disc and by streaming over the Internet on your computer, mobile device or home entertainment device.

Referring page - The web page a visitor was viewing before clicking on a hyperlink and arriving at the current page.

Referring Sites - Other Websites that refer or send visitors to your Website are called referring sites. Knowing where your traffic is coming from is an easy way to increase your ROI. You can focus more resources on sites that are referring more traffic, or re-evaluate your campaigns on sites that are not driving much traffic.

Refill Card - A card used for replenishing the funds on a prepaid account.

Refresh - Depending on what browser you’re using, when you hit the refresh or reload button, your computer will bring up the same page you’re looking at with updated information on it.

Refund - A return of funds to a consumer for a returned product. 

Registration - An entry of personal information in a formal record. When customers shop at your online business, they will have the opportunity to register as a member of your online business. The registration usually consists of user name, password, billing/shipping address, and e-mail address. 

Registry - This is a database used by Microsoft Windows to store configuration information about the software installed on a computer. This information includes things like the desktop background, program settings, and file extension associations. VERY IMPORTANT: you should not edit the registry if you don’t know what you’re doing because it could disable your computer.

Regular Expression Match - One of three different match types that Google Analytics defines to identify a URL for either a goal or a funnel. Special characters can be used that enable wildcard and flexible matching. This is useful if your visitors are coming from multiple sub domains or if you use dynamic session IDs.

Relevant Mobile Advertising - Advertising where we help determine whether a customer fits within an audience category that an advertiser is trying to reach. See our FAQs and Privacy Settings pages for more information about Relevant Mobile Advertising and your privacy options.

Repeater - A wireless network device that receives signals and retransmits them, without providing direct access to the wired network. Repeaters are typically used to increase the range wireless networks can cover.

Report snapshot - Displays the status of past report data.

Request - The number of times a creative has been requested to be displayed on a website (compare with impression). When a browser attempts to retrieve a page, or any of the elements within a page, from an internet server, it is said to be making a request.

Request URI - The string at the end of a URL after the ".com" in your Web address is the request URI.Example: If your URL is "www.mycompany.com/page1/product1.htm" then your request URI is "/page/product1.htm".

Reseller - A company that purchases goods or services for the purpose of resale not consumption. In web economics, a reseller may also be a form of affiliate marketer, promoting a rebranded service.

Resolution - Resolution is a measure of the number of pixels a video contains both horizontally and vertically. Some common resolutions are 640x480 (SD) 1280x720 (HD), 1920x1080 (HD). Sometimes these are referred to just by their vertical dimension such as, 480p, 720p or 1080p.

Resolve - The term used to describe the process by which domain names are matched with corresponding Internet Protocol (IP) numbers. Resolution (not to be confused with screen or monitor resolution) is accomplished by a combination of computers and software, which use the data in the Domain Name System to determine which IP numbers correspond to a particular domain name. Basically, it is translating a number to the name you see in your browser for the web site you are visiting.

Response - A reply, answer, or additional message that is returned to a sender. 

Restocking Fee - A fee that's charged when a mobile device is returned or exchanged. The restocking fee covers the costs associated with processing a return. 

Retailer - A company that sells directly to the end consumer. 

Retina Display -The high-resolution screen technology designed by Apple.

Retrieval Request - A request by a bank to a merchant for documentation concerning a transaction. Usually regarding a customer dispute or an improper sale or return. A retrieval request can lead to a chargeback. See "Chargeback". 

Return - A transaction in which a consumer wants to return a purchase and receive his/her money back. (Contrast with void).

Return on Ad Spend (ROAS) – Ratio of money gained or lost on an investment relative to the amount of advertising (PPC) money invested.

Return on Investment (ROI) – Ratio of money gained or lost on an investment relative to the amount of money invested.

Returning Visitor - A returning visitor is a user who has been to your Website and has come back. When visitors return to a Website, it demonstrates that the Website is of interest to them.

Revenue model - The revenue relationship or deal type established between an ad network and the publishers that they directly manage.

Revenue sharing - An OpenX Ad Server feature that allows ad networks to manage and track revenue splits with the publishers they manage.

RFID (Radio Frequency Identification) - The use of a wireless non-contact system that uses radio-frequency electromagnetic fields to transfer data from a tag attached to an object, for the purposes of automatic identification and tracking.

Rich media - Ad technology that features more refined images as well as audio and video in the ad. Rich media ads frequently allow visitors to interact with a banner without leaving the page on which it appears (e.g., movie ads that expand and play a trailer on the host page).

Ringback Tones - A service allowing you to modify the normal ringing sound that a person calling you hears before you answer the call. For example, instead of hearing a standard ringing tone, the caller would hear a song that you’ve selected.

Ringtone - The sound a phone makes to indicate an incoming call.

Roadside Assistance - A service offered by Verizon that provides everything from battery boosts to towing service. With Roadside Assistance you're covered anywhere in the US, Puerto Rico and Canada - whether you're in your own vehicle, a friend's vehicle or a rental. You can even lend your mobile device to a friend or family member, and they'll be covered, too. Your mobile device simply needs to be at the location where service is provided.

Roaming - In a wireless network with multiple APs, a client that is moving from the coverage area provided by one AP to that provided by another is roaming. It must disassociate from the first AP before it can associate to the next AP.

Rock Band - Get the band together while you're apart. With the Rock Band app, you can rock out even from afar. You'll stay in sync, measure for measure, thanks to reduced lag times.

Rogue - A rogue client is one that attempts or succeeds in accessing a wireless network without authority to do so. A rogue AP is one installed onto the wired network without authority, and can be a maliciously placed device by someone attempting to penetrate the network, or by a non-malicious user who simply wanted to get wireless access to the wired network but did not involve IT or go through appropriate processes.

ROI - Radio on Internet.

Role - A grouping of user permissions, which, when assigned to a user, defines the tasks that they can perform on behalf of their accounts.

ROM (Read-Only Memory) - Memory containing hardwired instructions that the computer uses when it boots up, before the system software loads. In PCs, the instructions are read from a small program in the ROM, called the BIOS (Basic Input/Output System).

RON - Run of network, ads that will appear anywhere on any page of any site that is part of a specific ad network. Such untargeted advertising is the cheapest to purchase.

Room Tone - Room Tone is the presence, or sound in a room. It is recorded and later intercut with dialogue to smooth out any rough or jarring editing points..

Rooms - Rooms is a feature that you can use to create a private virtual space on your Windows® Phone. You can invite friends and family to view and share photos, videos, calendar events and more in a room.

ROS - Run of site, ads that will appear anywhere on a website.

Rotation - A way in which creatives are served on a page. The creative will change when the page is refreshed, rather than stay static. Some advertisers may request that their ad not be rotated.

Route - A “route” is the path followed by a TCP/IP packet as it passes from it’s source to it’s destination.

Router - In the context of SOHO, a wireless router is an AP that also performs Internet connection sharing, and can run a DHCP service, a captive portal service,

RSA - A method of public key encryption developed by Rivest, Shamir, and Adelman at the Massachusetts Institute of Technology which is sold by RSA Data Security Inc. RSA technology is one of the most popular public key encryption technologies currently available.

RTB - Real-time bidding, auctioning online inventory within an ad exchange. Buyers bid for the impression based on the value of the user, whereas the seller sets pricing floors and awards the impression to the highest bidder. The auction process takes place in milliseconds, which is why the process is referred to as “real-time.”

RTG - Real-time guaranteed, a programmatic direct deal type that allows a buyer and a publisher to commit to a flexible guarantee for the purchase of inventory and a buyer-defined audience.

Rule of Thirds - The Rule of Thirds is a method of composing your shots in an aesthetically pleasing way.