websites and URL
Website is a collection of webpages, text, images, videos or other digital assets that is hosted on one or more web servers, usually accessible via the Internet. Think of it as a somewhat compilation of real papers/pages designed to serve as information resources, parang scrapbook na madaming pages na merong pwedeng ipakitang something sa mga mambabasa (i.e. viewers of site).URL (Uniform Resource Locator or also a synonym for URI - Uniform Resource Identifier) is a valid identifier or address used to locate and access a certain website/webpage(s). Para itong address ng bahay mo, since sa dinami-dami ng bahay sa mundo, 'yan ang unique location ng tirahan mo so as para malaman ng mga tao on how to go to your place. So basically, it is a unique address used for locating purposes ng mga webpage(s)/websites.

Encryption
In cryptography, encryption is the process of transforming information (referred to as plaintext) using an algorithm (called cipher) to make it unreadable to anyone except those possessing special knowledge, usually referred to as a key. The result of the process is encrypted information (in cryptography, referred to as ciphertext). In many contexts, the word encryption also implicitly refers to the reverse process, decryption (e.g. “software for encryption” can typically also perform decryption), to make the encrypted information readable again (i.e. to make it unencrypted).
Encryption has long been used by militaries and governments to facilitate secret communication. Encryption is now used in protecting information within many kinds of civilian systems, such as computers, networks (e.g. the Internet e-commerce), mobile telephones, wireless microphones, wireless intercom systems, Bluetooth devices and bank automatic teller machines. Encryption is also used in digital rights management to prevent unauthorized use or reproduction of copyrighted material and in software also to protect against reverse engineering (see also copy protection).
Encryption, by itself, can protect the confidentiality of messages, but other techniques are still needed to protect the integrity and authenticity of a message; for example, verification of a message authentication code (MAC) or a digital signature. Standards and cryptographic software and hardware to perform encryption are widely available, but successfully using encryption to ensure security may be a challenging problem. A single slip-up in system design or execution can allow successful attacks. Sometimes an adversary can obtain unencrypted information without directly undoing the encryption.

DIGITAL CERTIFICATES

The main purpose of the digital certificate is to ensure that the public key contained in the certificate belongs to the entity to which the certificate was issued. Encryption techniques using public and private keys require a public-key infrastructure (PKI) to support the distribution and identification of public keys. Digital certificates package public keys, information about the algorithms used, owner or subject data, the digital signature of a Certificate Authority that has verified the subject data, and a date range during which the certificate can be considered valid. Without certificates, it would be possible to create a new key pair and distribute the public key, claiming that it is the public key for almost anyone. You could send data encrypted with the private key and the public key would be used to decrypt the data, but there would be no assurance that the data was originated by anyone in particular. All the receiver would know is that a valid key pair was used.

PROTECTED SITES
A facility which is protected by the use of camouflage or concealment, selective siting, construction of facilities designed to prevent damage from fragments caused by conventional weapons, or a combination of such measures.

podcast
is a series of digital media files (either audio or video) that are released episodically and downloaded through web syndication.
The mode of delivery differentiates podcasting from other means of accessing media files over the Internet, such as direct download, or streamed webcasting. A list of all the audio or video files currently associated with a given series is maintained centrally on the distributor's server as a web feed, and the listener or viewer employs special client application software known as a podcatcher that can access this web feed, check it for updates, and download any new files in the series. This process can be automated so that new files are downloaded automatically. Files are stored locally on the user's computer or other device ready for offline use, giving simple and convenient access to episodic content.[1][2] Commonly used audio file formats are Ogg Vorbis and MP3.
Researchers at the Center for Journalism and Communication Research at the University of Texas at Austin in the USA are proposing a four-part definition of a podcast: A podcast is a digital audio or video file that is episodic; downloadable; programme-driven, mainly with a host and/or theme; and convenient, usually via an automated feed with computer software.

RSS
RSS (Rich Site Summary) is a format for delivering regularly changing web content. Many news-related sites, weblogs and other online publishers syndicate their content as an RSS Feed to whoever wants it.

Search engine
A program that searches documents for specified keywords and returns a list of the documents where the keywords were found. Although search engine is really a general class of programs, the term is often used to specifically describe systems like Google, Alta Vista and Excite that enable users to search for documents on the World Wide Web and USENET newsgroups

web browser
is a software application for retrieving, presenting, and traversing information resources on the World Wide Web. An information resource is identified by a Uniform Resource Identifier (URI) and may be a web page, image, video, or other piece of content.[1] Hyperlinks present in resources enable users to easily navigate their browsers to related resources.

ISP
Short for Internet Service Provider, a company that provides access to the Internet. For a monthly fee, the service provider gives you a software package, username, password and access phone number. Equipped with a modem, you can then log on to the Internet and browse the World Wide Web and USENET, and send and receive e-mail.

Hyperlink
is a graphic or a piece of text in an Internet document that can connect readers to another webpage, or another portion of a document. Web users will usually find at least one hyperlinkhyperlinkhyperlink on every webpage. The most simple form of these is called embedded text or an embedded link.

URL>
Abbreviation of Uniform Resource Locator, the global address of documents and other resources on the World Wide Web
The first part of the address is called a protocol identifier and it indicates what protocol to use, and the second part is called a resource name and it specifies the IP address or the domain name where the resource is located. The protocol identifier and the resource name are separated by a colon and two forward slashes.

The world wide web
The World Wide Web is a part of the Internet "designed to allow easier navigation through the use of graphical user interfaces and hypertext links between different addresses"
The internet
The Internet is at its most basic definition an electronic communications network. It is the structure on which the World Wide Web is based