Duration: 3 hours/week MODULE 3: THE INTERNET AND THE WORLD WIDE WEB INTRODUCTION Every day, masses of people around the world use the Internet to search and retrieve information on all sorts of matter in a wide selection of areas. The information can appear in several types of digital format, such as texts, images, or videos. Individuals, companies, government, and other organizations make resources available. People communicate with each other by sharing information and making commercial and business communications, using electronic mail. All this activity is possible because of the tens of thousands of networks that are connected to the Internet and exchange information in the same basic way. Never before has so much information from such a wide variety of sources and in so many formats been available to the public. The World Wide Web is not the same as the Internet, but the two terms are commonly used as synonyms. The Web is the information connected or linked in a way that is like a spider’s web. Using a Web browser, the computer program or software lets you access the World Wide Web where you can find information on almost any topic with just a few clicks of your mouse button. Several search tools are readily available. When you type a keyword or phrase into a form and click on a button or icon on the screen, a list of items appears. You simply click on the ones you want to retrieve. The amount and variety of information available are astonishing, but sometimes it is difficult to find the proper material. Lesson Objectives By the end of this module, the students should be able to: 1. 2. 3. 4. 5. Trace the history of the internet; Identify the ways to access and connect to the internet; Analyze how data travels through the internet; Perform search functions on the web; and Create a personal web page. LIVING IN THE IT ERA 2020 LESSON 3.1: THE INTERNET The internet is defined as a global wide area network (WAN) that connects billions of computers and other electronic devices via servers and routers. With the use of internet, everyone can access information, communicate with anyone and do other related stuffs. In fact, at least 190 countries worldwide are linked into exchange of data, news, opinions, and entertainment. This information that travels over the internet does so via a variety of languages called protocols. It is often used interchangeably with the term world wide web (or simply WWW), however they’re not the same thing. To differentiate the two terms: internet denotes the global communication system that involves the hardware and infrastructure. On the other hand, world wide web (or simply web) pertains to one of the services that is communicated over the internet. Back to the Future: The Brief History of Internet Precursors The Internet Gives Birth to the Web Preparing for a Global Network The Modern Internet •1960's •1970's The Web Takes Off Internet and Web for All •1990's •1980's •2000's Timeline: Developments on the Internet from Time to Time ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 2 LIVING IN THE IT ERA 2020 Precursors 1844 • The transmission of first telegraph message. 1876 • The invention of telephone and the refinement of the phonograph (1886) 1940 • George Stibitz accesses a computer in New York using a teletype (remote terminal) in New Hampshire, connected over a telephone line. 1945 • Published the paper "As We May Think", that anticipates the development of the World Wide Web by half a century. 1958 • The developed modern modems were commercially sold by AT&T and Bell. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 3 LIVING IN THE IT ERA 2020 In 1844, Samuel Finley Breese Morse, an American painter and inventor, transmits the first electric telegraph message, eventually making it possible for people to send messages around the world in a matter of minutes. The first telegraph message was done by transmitting electric signals over a wire laid between stations, from Washington D.C. to Baltimore, Maryland. In addition, Morse developed the code (called Morse Code) that assigns a letter on the English alphabet by a set of dots and dashes that allowed the simple transmission of complex messages across telegraph lines. FUN FACT Wondered who developed the Morse Code? Obviously, it came from Samuel Morse (as seen on the name). Morse Code assigns a letter on the English alphabet by a set of dots and dashes that allowed the simple transmission of complex messages across telegraph lines. With this, it helped him to transmit the first telegraph message. Fast forward to 1876, Alexander Graham Bell, a Scottish-born American inventor, scientist and a teacher of a deaf, developed the telephone and the refinement of the phonograph (1886). Before this, he stated working on a harmonic telegraph in 1871 – an improvement on the first telegram that allowed simultaneous transmission of multiple messages over a wire. Trying to make his invention perfect, Bell was thinking of a way on how to transmit human voices over the wires until Thomas Watson came up with a simple receiver that turns electricity into sound in 1875. In 1915, the first transcontinental phone call was made by Bell. He made that call from New York to San Francisco. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 4 LIVING IN THE IT ERA 2020 FUN FACT The patent for the invented telephone was given to Bell on March 7, 1876. On 1877, he created the Bell Telephone Company (presently known as the AT&T. In 1940, George Robert Stibitz, a U.S. mathematician and inventor, accessed a computer in New York remotely in New Hampshire. This was connected over a telephone line. He accomplished that by inputting problems via a teleprinter. FUN FACT Because he was a holder of 38 patents, he was inducted in the Investors Hall of Fame in year 1983. Also, he pioneered computer applications in some biomedical areas. Meanwhile in 1945, Vannevar Bush, a US government scientist, publishes a paper called As We May Think, anticipating the development of the World Wide Web by half a century. This was published in the Atlantic Monthly. In this paper, he proposed Memex – an indexed, archival, microfilm machine that is used for crossreferencing and retrieval of information. Also, this paper was an extension of his research work in analog computing and microfilm technology. In 1958, Bell Labs developed the modern modems which begin selling commercially by AT&T and Bell aiming that it will be for the use on the public telephone system. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 5 LIVING IN THE IT ERA 2020 Preparing for a Global Network (1960s) 1963 •J.C.R. Licklider envisages a network that can link people and user-friendly computers together. 1964 •Introduced the concept of communication between computers thru sending "message blocks" which gave a similar idea and coined the term "packet switching". 1964 •Larry Roberts, a US computer scientist, experiments with connecting computers over long distances. 1965 •Ted Nelson invents hypertext, a way of linking together separate documents that eventually becomes a key part of the World Wide Web. 1966 •The start of development of a national computer network, inspired by the work of Licklider. 1969 •The launching of ARPANET computer network. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 6 LIVING IN THE IT ERA 2020 The Appearance of the Modern Internet (1970s) 1971 • Sent the first email introducing the "@" as one way to separate a user's name from the computer name where the mail is stored. 1973 • The invention of Ethernet, linking computers and other devices in a single local network. 1974 • An influencial paper was written to describe how the computers linked on a network could send messeges thru packet switching using TCP. 1978 • Introduced the improved TCP that laid the foundation of the basis of the modern Internet. 1978 • A computer bulletin board system was set up in order for computer hobbyist to swap information. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 7 LIVING IN THE IT ERA 2020 The Internet Gives Birth to the Web (1980s) 1983 • Official adoption of TCP/IP as the standard way which Internet computers will communicate. 1982-1984 • The development of a Domain Name System (DNS) 1986 • NSFnet is created that allows the universities to be linked in ARPAnet's growing infrastracture. 1988 • Internet Relay Chat was invented, allowing users to create virtual "rooms". 1989 • A grocery store, named Peapod, Introduced online grocery shopping and e-commerce. 1989 • Also the same year, Tim Berners-Lee invents the World Wide Web at CERN, the European particle physics laboratory in Switzerland. It owes a considerable debt to the earlier work of Ted Nelson and Vannevar Bush. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 8 LIVING IN THE IT ERA 2020 The Web Takes Off (1990s) 1993 • Mosaic, the first user-friendly web-browser was introduced. • Also, World Wide Web Worm, one of the first search engines, was developed. 1994 • Brian Pinkerton writes WebCrawler, a more sophisticated search engine and Jerry Yang and David Filo launch Yahoo!, a directory of websites organized in an easy-to-use, tree-like hierarchy. 1995 • E-commerce properly begins when Jeff Bezos founds Amazon.com and Pierre Omidyar sets up eBay. 1996 • ICQ was considered as the first user friendly instant messaging on the Internet. 1997 • Published the first blog (weblog). 1998 • Backrub search engine was developed, which was later renamed as Google. 1999 • The idea of Internet of Things (IOT) emerged, citing that not only computers but also everydat objects could be part of the Internet. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 9 LIVING IN THE IT ERA 2020 Internet and Web for All (2000s) 2003 • Virtually every country in the world is now connected to the Internet. 2004 • Harvard student Mark Zuckerberg revolutionizes social networking with Facebook, an easy-to-use website that connects people with their friends. 2016 • Jack Dorsey and Evan Williams found Twitter, an even simpler "microblogging" site where people share their thoughts and observations in off-the-cuff, 140character status messages. 2017 • Russian president Vladimir Putin approves a plan to create a private alternative to the Internet to counter the historic dominance of the (traditional) Internet by the United States. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 10 LIVING IN THE IT ERA 2020 Types of Internet Connection As we see, technology is fast pacing. If we look on the technology trends lately, we can say that what is hardly done before, can be access today with a simple swipe or click of a button. Nowadays, there are numerous ways on how an electronic device can be connected to the internet. From there, you can instantly connect with people virtually whenever and wherever you are located. Plus, the options you may choose also grows as the days go by. One of those evolving industries worldwide is the internet services. With that, it can be quite hard to determine the kind of service that is available to your location, preference and the availability of the hardware. Enumerated below are some of the types of internet connections. 1. Dial-up A dial-up connection requires the user to link a phone line to a computer before having access to the Internet. This type of internet connection is typically the slowest type among all Internet connections, and it should probably avoid availing unless that this service is the last connection available in your area. Also, with this type of connection, you can’t use the landline and the Internet at the same time, which is a big downside. 2. Broadband A broadband (short for “broad bandwidth”) internet service offers better high-speed connections compared to a dial-up service. Generally, it can be categorized as follows. Digital Subscriber Line A digital subscriber line (or DSL) service uses a broadband connection, which makes it faster than a dial-up connection. DSL connects to the Internet via an existing 2-wire copper phone line. Comparing this type of connection to a dialup connection, users can be able to use the Internet and your phone line at the same time. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 11 LIVING IN THE IT ERA 2020 Cable Internet A cable internet service operates via cable TV lines, although you do not necessarily need to have cable TV in order to get it. It uses a broadband connection that greater bandwidth compared to DSL – meaning faster access than a DSL, and on a dial-up service. On the other hand, it is only available where cable TV is available. Also, its speed can depend on the usage of the access and whether you upload or download any file. Wireless Unlike DSL and cable services, wireless is a kind of internet connection that uses radio frequencies to access the Internet. This is commonly termed as “WiFi” (which some people say that it stands for “wireless fidelity”), an abbreviation that has almost become synonymous with “Internet”. With this type of connection, it is always on and accessible anywhere if the user is in the network range. Nowadays, it is one of the fastest options to avail. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 12 LIVING IN THE IT ERA 2020 Fiber Optics Fiber optic internet is one of the latest trends in the broadband world. With this technology, it offers an incredibly fast internet speed. Given this speed, it is a great option for a household to use multiple devices all at the same time without affecting the speed of the internet. In addition to this, fiber optic internet connection is the right Internet connection for small businesses that can rely for their day-to-day activities. 3. Satellite A satellite connection uses broadband but does not require cable or phone lines in order to access the internet. In fact, it connects to the Internet through satellites orbiting the Earth. As a result, it can be used almost anywhere in the world, but the connection may be affected by weather patterns. Satellite connections are also usually slower than DSL or cable. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 13 LIVING IN THE IT ERA 2020 4. Cellular Technology On cellular technology, it provides wireless Internet access through mobile phones where speeds vary depending on the internet service provider (ISP). Commonly used cellular connections are 3G and 4G services. 3G is a term that describes a 3rd generation cellular network obtaining mobile speeds of around 2.0 Mbps 4G is the fourth generation of cellular wireless standards. The goal of 4G is to achieve peak mobile speeds of 100 Mbps but the reality is about 21 Mbps currently. 5G is the 5th generation mobile network that enables a new kind of network that is designed to connect virtually everyone and everything together including machines, objects, and devices. This is meant to deliver higher and faster speeds compared to 4G with more reliability and ultra-low latency. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 14 LIVING IN THE IT ERA 2020 LESSON 3.2: WHAT JOBS CAN THE INTERNET DO? The Internet makes it possible to quickly find information, communicate with people around the world, manage your finances, shop from home, listen to music, watch videos, and such. Here are some useful things that one can do on the internet. Education It is widely used to gather information and to do research or add to the knowledge of various subjects. It makes easier for them to research things, and relearn the content taught in the school. People use it according to their needs and interests. Popular Search Engine is GOOGLE - topmost choice of people as they offer an easy and instant reach to the vast amount of information in just a few seconds. Communication People use the Internet to communicate with one another. Messages, e-mails, e-cards, voice calls, video chat are various roads that connect people all around the world with the help of internet. Entertainment Many people use the Internet to enjoy themselves and to engage in personal interests. Internet has provided Entertainment creators with another avenue to explore. Financial Transaction E-commerce stands for a type of business model which involves online transactions. It can be thought of as a more advanced form of mail order purchasing through a catalog. Online Booking Movies, hotel reservations, concerts, exhibitions, railways and airlines, tickets of everything is available online. The biggest advantage of online reservation is its 24/7 accessibility to every customer. Online Shopping and Selling The lifestyle is turning towards sedentary habits and so is our style of shopping. Many people choose scrolling a webpage for a product instead of strolling the shops. People use the Internet to research, find and buy services and products. Or to target and sell to the ultimate consumer. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 15 LIVING IN THE IT ERA 2020 Job Hunting Newspapers, flyers, recommendations, job boards and networking, the traditional methods of searching for a job have been now overruled by online hunt for jobs. By using the internet, you can apply for job opportunities across the globe. Online Jobs Freelance Writer. There is a need for freelance writers in the areas of article writing, content writing, analogy writing, and proposing creative ideas that materialize on the pages of almost every website on the internet. Virtual Assistant. The tasks of a virtual assistant can vary greatly — some tasks may include creating documents related to the business, answering email inquiries, creating content, and more. Web Designer / Developer. Businesses want all their website visitors to experience many things on their site, but they must ensure that the visitor will feel that it is worth their time. This is where a website developer or designer will find their place. Social Media Manager. Not every large business has an individual to manage their accounts, which is why more freelancers are marketing themselves as social media managers in order to help businesses grow and expand their reach. Email Marketer. This position is for those that oversee designing a business’s email advertising campaign and managing a subscriber list in order to build their client’s reach. Animation Jobs. A job in animation not only allows for but thrives on creativity and allows the employee to draw from the inspiration all around them. Promotional Video Maker. Those who have backgrounds in filmmaking but desire to not be tied down to a location may consider becoming promotional video makers. Today’s media is using videos for almost everything, and the platforms are growing by the day. LESSON 3.3: HOW DATA TRAVELS THE INTERNET? A data packet (otherwise termed as a network packet) is a collective name of several components. These components are needed for you to be able to browse the web, for example. For the user to go to a particular website, the user will need to send packets to the website's web server, and that server will have to send packets back to you. For this to work, a packet needs to hold several components: 1. IP address First, the packet needs two addresses, the source address and the destination address. How would it else know where to go and where it came from? ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 16 LIVING IN THE IT ERA 2020 2. hop counts - A packet has something called "time to live." It pertains to the number of hops the packet can do until it dies. Each time the packet goes through a network node (i.e., a router or a switch, like a crossing), the number is decreased – avoiding packets with errors hopping around the web for eternity. 3. length - Depending on what the packet carries, one packet may not be enough. Each packet consists of a length so that the receiver knows if the packet came alone or if more is to come. 4. payload - A payload refers to the actual data, the content of the packet. A packet can also include other components, but these are the main ones that are always there. Network packets are how information (data) is being carried over the Internet. But how does the packet travel? The figure below visualizes the process of how data travels the Internet. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 17 LIVING IN THE IT ERA 2020 What Computers can do on the Internet? How do Computers Connect over the Internet? Via the Internet, computers connect and communicate with one another, primarily using the TCP/IP (Transmission Control Protocol / Internet Protocol). Transmission Control Protocol (TCP) A TCP dictates what each computer must do to transmit data when to share data, how to transmit that data. It also states how to receive data in the same manner. Network Interface Card (NIC) The computer must have a NIC (network interface card) installed to connect to the Internet and other computers on a network. A network cable plugged into the NIC on one end and plugged into a cable modem, DSL modem, router, or switch can allow a computer to access the Internet and connect to other computers. Internet Service Provider (ISP) The ISP provides a bridge between your computer and all the other computers in the world on the Internet. Types of Network Different types of networks differ based on the location, coverage, and, most importantly, the usage. These are enumerated below. 1. Local Area Network A Local Area Network (or simply LAN) is a group of computers and other devices connected over a network and are all in the same location — typically within a single building like an office or home. A LAN comprises cables, access points, switches, routers, and other components that enable devices to connect to internal servers, web servers, and other LANs via wide area networks. The advantages of a LAN are the same as those for any group of devices networked together. The devices can use a single Internet connection, share files, print to shared printers, and be accessed and even controlled by one another. A wireless local area network (abbreviated as WLAN, sometimes called a local area wireless network or LAWN) is a wireless distribution method for two or more devices that use high-frequency radio waves and often include an access point to the Internet. A WLAN allows users to move around the ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 18 LIVING IN THE IT ERA 2020 coverage area, usually a home or small office, while maintaining a network connection. A WLAN can be built using any of several different wireless network protocols, most commonly Wi-Fi or Bluetooth. Network security remains an essential issue for WLANs. Wireless clients usually have their identity verified (a process called authentication) when joining a wireless LAN. Technologies such as WPA raise the level of security on wireless networks to rival that of traditional wired networks. 2. Wide Area Network A wide area network (also known as WAN) spans a large geographic area such as a city, state, or country. It can be private to connect parts of a business, or it can be public to connect smaller networks. It is an extensive network of information that is not tied to a single location. WANs can facilitate communication, the sharing of information, and much more between devices from around the world through a WAN provider. One of the most basic ways to think about a vast area network involves understanding how and why it connects smaller local area networks. Again, the local area network is defined within a small geographical area. Typically, it's within a single-family home or an individual office building. 3. Personal Area Network A personal area network, abbreviated as PAN, is a network concerned with the exchange of information in the vicinity of a person. Typically, these systems are wireless and involve the transmission of data between devices such as smartphones, personal computers, tablet computers, etc. The difference between PANs and other network types is that they transmit information between devices that are nearby instead of sending that same data through a LAN or WAN before it reaches something that's already within reach. PANs are for personal use, so the benefits might be more easily understood than when talking about wide area networks, for example, that describe the Internet. With a personal area network, your devices interconnect for more accessible communication. 4. Campus Area Network A Campus Area Network (or simply CAN, also known as corporate area network) is a computer network that links the buildings and consists of two or more local area networks (LANs) within the limited geographical area. It can be the college campus, enterprise campus, office buildings, military base, industrial complex. CAN is one of the type of MAN (Metropolitan Area Network) on the area smaller than MAN. They can be spread across several buildings that are relatively close to each other so users can share resources. Thus, they are used in universities. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 19 LIVING IN THE IT ERA 2020 In a CAN, computers may be wirelessly or wire connected. Along with the sharing of computer resources, data, research work, information, etc., CAN make a private network within an organization. Also, since sharing of resources occurs on a CAN, there may not be a need to install software on all the computers, and thus, users can access and use software through the network. Such services are provided by servers placed in the system. 5. Metropolitan Area Network A metropolitan area network (or only MAN) is similar to a local area network (LAN) but spans an entire city or campus. MANs are formed by connecting multiple LANs. Thus, MANs are more massive than LANs but smaller than wide-area networks (WAN). MANs typically cover transmission ranges between 5 and 10 km in diameter and may cover an area the size of a city, or even a group of small buildings. MANs often act as a high-speed network that allows the sharing of regional resources and provides a shared connection to other systems. MANs can also mean the interconnection of several LANs by bridging them with backbone lines. MANs are incredibly efficient and provide fast communication via high-speed carriers, such as fiber optic cables. The network is established using routers and switches. A switch is a port that is active in handling the filtration of data that is usually coming in frames. Any switch acts as a dual-port; at one end, it is taking filtration of data and, at the other end, managing connections. 6. Enterprise Private Network An enterprise private network is a computer network that helps enterprise companies with several disparate offices connect those offices to each in a secure way over a network. It is mainly set up to share computer resources. Network diagrams visualize schematically the computer networks topology, equipment nodes and different types of their logical and physical connections. They are used by IT professionals to visually document the topology and design of computer and telecommunication networks. 7. Virtual Private Network By extending a private network across the Internet, a VPN lets its users send and receive data as if their devices were connected to the private network – even if they're not. Through a virtual point-to-point connection, users can access a private network remotely. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 20 LIVING IN THE IT ERA 2020 When accessing a local computer in your network, your router sends your TCP/IP packets between the local IP addresses However, when you want to connect to the Internet, your router uses the IP address assigned by the ISP. Your IP address is not a 192.168.x.x address because the ISP assigns that IP address and not your router. When requesting information from a web page, you enter a URL. For your computer to access the computer containing the pages, the URL must be converted into an IP address, which is done with DNS. Once DNS has converted the URL into an IP address, the routers on the Internet will know how to route your TCP/IP packet. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 21 LIVING IN THE IT ERA 2020 LESSON 3.4: WHAT COMPUTERS DO ON THE INTERNET? Computers have different functions on the internet. Some computers work as storage for electronic data that store information and send when a client need so. These are called servers. A server is a software or hardware device that accepts and responds to requests made over a network. The device that makes the request, and receives a response from the server, is called a client. On the Internet, the term "server" commonly refers to the computer system that receives requests for a web files and sends those files to the client. A client on the other hand is a computer that connects to and uses the resources of a remote computer, or server. Many corporate networks comprise a client computer for each employee, each of which connects to the corporate server. Active Directory Domain Services (AD DS) is a server role in Active Directory that allows admins to manage and store information about resources from a network, as well as application data, in a distributed database. AD DS can also help admins manage a network's elements (computers and end users) and reorder them into a custom hierarchy. Dynamic Host Configuration Protocol (DHCP) is a network management protocol used to automate the process of configuring devices on IP networks, thus allowing them to use network services such as DNS, NTP, and any communication protocol based on UDP or TCP. A DHCP server dynamically assigns an IP address and other network configuration parameters to each device on a network so they can communicate with other IP networks. A file server is a central server in a computer network that provides file systems or at least parts of a file system to connected clients. File servers therefore offer users a central storage place for files on internal data media, which is accessible to all authorized clients. Here, the server administrator defines strict rules regarding which users have which access rights: For instance, the configuration or file authorizations of the respective file system enable the admin to set which files can be seen and opened by a certain user or user group, and whether data can only be viewed or also added, edited, or deleted. A print server is a software application, network device or computer that manages print requests and makes printer queue status information available to end users and network administrators. Print servers are used in both large enterprise and small or home office networks. The router, at least the common home network device that is usually called a router, is the piece of network hardware that allows communication between your local home network—like your personal computers and other connected devices— and the internet. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 22 LIVING IN THE IT ERA 2020 LESSON 3.5: THE WORLD WIDE WEB World Wide Web is combination of all resources and users on the Internet that are using the Hypertext Transfer Protocol (HTTP) such as smartphone, laptop, computers, and etc. that can access the content on the internet. Web Technologies The WWW I considered as one of the applications in internet and computer network. There are different fundamental technologies said to be a part of the development of a WWW: 1. Hypertext Markup Language (HTML) - is the language used to create webpages. "Hypertext" refers to the hyperlinks that an HTML page may contain. "Markup language" refers to the way tags are used to define the page layout and elements within the page. 2. Hypertext Transfer Protocol (HTTP) - The Hypertext Transfer Protocol is an application protocol for distributed, collaborative, hypermedia information systems that allows users to communicate data on the World Wide Web. 3. Web servers and web browsers - A web server is software and hardware that uses HTTP (Hypertext Transfer Protocol) and other protocols to respond to client requests made over the World Wide Web. The main job of a web server is to display website content through storing, processing and delivering webpages to users. A web browser on the other hand, or simply "browser," is an application used to access and view websites. Common web browsers include Microsoft Internet Explorer, Google Chrome, Mozilla Firefox, and Apple Safari. The World Wide Web Today All major websites have adjusted their content design and development approach to accommodate the rapidly increasing fraction of the population accessing the web from small-screen phones instead of large-screen desktop and laptop computers. Privacy and anonymity on the internet are an increasingly important issue on the web as significant amounts of personal information including a person's search history and browsing patterns are routinely captured (often for targeted advertising purposes) along with some geolocation information. Anonymous web proxy services attempt to provide online users with an extra level of privacy by re-routing their browsing through third-party web servers. Websites continue to be accessed by their domain names and extensions. While "dot-com" domains remain the most popular, numerous others can now be registered including ".info" and ".biz" domains. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 23 LIVING IN THE IT ERA 2020 Competition among web browsers continues to be strong as IE/Edge and Firefox continue to enjoy large followings, Google has established its Chrome browser as a market contender, and Apple continues to advance the Safari browser. HTML5 re-established HTML as a modern web technology after having stagnated for many years. Similarly, the performance enhancements of HTTP/2 have ensured the protocol will remain viable for the foreseeable future. Searching for Information on the Web A website is being maintained by its owner, also known as a web administrator. The admin can modify the website’s content as well as add new information or function to it. Meanwhile, people or users like us use the internet as search engines and subject directories in locating information on the web. Search Directories are sites being maintained by human editors and not by bots. On the other hand, search engines uses small programs called spiders or bots (like Googlebots, Yahoo Slurp and MSNbot) that polish the internet, follow links, and return information to the search engine’s indicator. Here are several techniques that can be used to improve a web search: 1. Using specific words and placing the most important terms first in the search text or phrase. 2. The use of quotation marks (“”) to create exact phases – this helps the search engine to find what it looks like for by using the exact sequence of words. 3. Listing all possible spellings Example: Organization and Organisation In addition to searching for web pages, many search engines allow searching for related images, news articles, and various types of reports in different types. Millions of people use Google search every day for a variety of reasons. Students use it for school, business people use it for research, and millions more use it for entertainment. But most people may not be using Google search to its full potential. Want to use Google search more efficiently and get the search results you want quickly? Here are 20 Google search tips and tricks to maximize your search efficiency: 1. Use the tabs - The first tip is to use the tabs in Google search. On the top of every search are a number of tabs. Usually you’ll see Web, Image, News, and More. Using these tabs, you can help define what kind of search you need to do. If you need images, use the Image tab. If you are looking for a recent news article, use the News tab. It’s rudimentary and most people use the tabs already. If you are not, then it’s highly ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 24 LIVING IN THE IT ERA 2020 recommended to get associated with them. They can cut search times dramatically if utilized properly. 2. Use quotes - When searching for something specific, try using quotes to minimize the guesswork for Google search. When you put your search parameters in quotes, it tells the search engine to search for the whole phrase. For instance, if you search for Puppy Dog Sweaters, the engine will search for content that contains those three words in any order. However, if you search “Puppy Dog Sweaters”, it will search for that phrase exactly as you typed it. This can help locate specific information that may be buried under other content if not sorted out correctly. 3. Use a hyphen to exclude words - Sometimes you may find yourself searching for a word with an ambiguous meaning. An example is Mustang. When you Google search for Mustang, you may get results for both the car made by Ford or the horse. If you want to cut one out, use the hyphen to tell the engine to ignore content with one of the other. Mustang -cars This tells the search engine to search for mustangs but to remove any results that have the word “car” in it. It can be wildly helpful when finding information about something without getting information about something else. 4. Use a colon to search specific sites - There may be an instance where you need to Google search for articles or content on a certain website. The syntax is very simple and we’ll show you below. Sidney Crosby site: nhl.com This will search for all content about famous hockey player Sidney Crosby, but only on NHL.com. All other search results will be removed. If you need to find specific content on a particular site, this is the shortcut you can use. 5. Find a page that links to another page - This Google search tip is a little obscure. Instead of searching for a specific page, you’re searching for a page that links to a specific page. Think about it this way. If you want to see who cited a New York Times article on their site, you would use this trick to find all the sites that link to it. The syntax is below: ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 25 LIVING IN THE IT ERA 2020 link: nytimes.com That will return all pages that link to the New York Times official website. The URL on the right side can be practically anything. Be aware, though, that the more specific it is, the fewer results you’ll get. We know not a lot of people will likely use this Google search trick, but it could be very useful for some. 6. Use the asterisk wildcard - The asterisk wildcard is one of the most useful ones on the list. Here’s how it works. When you use an asterisk in a search term on Google search, it will leave a placeholder that may be automatically filled by the search engine later. This is a brilliant way to find song lyrics if you don’t know all the words. Let’s look at the syntax: “Come * right now * me” To you or me, that may look like nonsense. However, Google search will search for that phrase knowing that the asterisks can be any word. More often than not, you’ll find they are lyrics to The Beatles song “Come Together” and that’s what the search will tell you. 7. Find sites that are similar to other sites - This is a unique one that could be used by practically everyone if they knew it existed. Let’s say you have a favorite website. It can be anything. However, that website is getting a little bit boring and you want to find other websites like it. You would use this trick. Below is the syntax: related: amazon.com If you search that above, you won’t find a link to Amazon. Instead, you’ll find links to online stores like Amazon. Sites like Barnes & Noble, Best Buy, and others that sell physical items online. It’s a powerful Google search tool that can help you find new sites to browse. 8. Use Google search to do math - Google search can actually do math for you. This is a rather complex one to describe because it can be used in so many ways. You can ask it basic questions or some more difficult ones. It is important to note that it won’t solve all math problems, but it will solve a good number of them. Here are a couple of examples of the syntax: 8*5+5 Planck’s Consant If you search the first one, it’ll return 45. It will also show a calculator that you can use to find answers to more questions. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 26 LIVING IN THE IT ERA 2020 This is handy if you need to do some quick math but don’t want to do it in your head. If you search the second term, it will return the number value of Planck’s Constant. So it can do math, but it can also help you solve math problems by showing values for known mathematical terms. 9. Search for multiple words at once - Google search is flexible. It knows you may not find what you want by searching only a single word or phrase. Thus, it lets you search for multiples. By using this trick, you can search for one word or phrase along with a second word or phrase. This can help narrow down your search to help you find exactly what you’re looking for. Here is the syntax: “Best ways to prepare for a job interview” OR “How to prepare for a job interview” By searching that, you will search both phrases. Remember the quotes tip above? It’s being used here as well. In this instance, these two exact phrases will be searched. It can be done by word too, like the example below: chocolate OR white chocolate This will search for pages that have either chocolate or white chocolate! 10. Search a range of numbers - Searching for a range of numbers is another tip we don’t anticipate a lot of people using. The people that do use it, though, will probably use it quite a bit. People interested in money or statistics will find this tip particularly useful. Essentially, you use two dots and a number to let Google search know you’re looking for a specific range of numbers. Like the syntax below: What teams have won the Stanley Cup ..2004 41..43 In the first instance, the search will toss back the team that won the Stanley Cup in 2004. The two dots with only one number will tell the search that you don’t need anything before or after 2004. This can help narrow down searches to a specific number to improve search results. In the second, Google will search for the numbers 41, 42, and 43. It is obscure, but wildly useful if you happen to need to search for numbers like this. 11. Keep it simple - Now we’re getting into the general tips. Google search knows how to search for a lot of things. What this means is you don’t need to be too specific. If you need a pizza place nearby, use this to search. Pizza places nearby Google search will grab your location and deliver a variety of results about pizza ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 27 LIVING IN THE IT ERA 2020 places that are near you. 12. Gradually add search terms - There will come a time when Google search doesn’t shovel out the results you expect. In this instance, keeping it simple may not be the best option. As Google itself suggests, the best method is to start with something simple then gradually get more complicated. See the example below: First try: job interviews Second try: prepare for job interviews Third try: how to prepare for a job interview This will gradually refine the search to bring you fewer, more targeted terms. The reason you don’t go straight from the first try to the third try is because you may miss what you’re looking for by skipping the second step. Millions of websites phrase the same information in a number of different ways; using this technique lets you search as many of them as possible to find the best info. 13. Use words that websites would use - This is a very important one. When people use Google search to hunt the web, they generally search for things using the same language that they would use for speaking. Unfortunately, websites don’t say things the way people do; instead, they try to use language that sounds professional. Let’s look at some examples: “I have a flat tire” could be replaced by “repair a flat tire.” “My head hurts” could be replaced by “headache relief.” The list goes on and on. When searching, try to use terminology you would find on a professional website. This will help you get more reliable results. 14. Use important words only - The way Google search works is to take what you search for and match it with keywords in online content. When you search for too many words, it may limit your results. That means it may actually take you longer to find what you’re looking for. Thus, it is apropos to use only the important words when searching for something. Let’s see an example: Don’t use: Where can I find a Chinese restaurant that delivers. Instead try: Chinese restaurants nearby. Or: Chinese restaurants near me. Doing this can help Google find what you need without all the clutter. So remember, keep it simple and use important words only. 15. Google search has shortcuts - A number of commands can be entered to give you instantaneous results. Like the math example above, Google can ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 28 LIVING IN THE IT ERA 2020 immediately give you the information you need that is displayed right at the top of the search results. This can save time and effort so you don’t have to click a bunch of bothersome links. Here are a few examples of some commands you can enter into Google: 1. Weather *zip code* – This will show you the weather in the given zip code. You can also use town and city names instead of area codes, but it may not be as accurate if there are multiple area codes in the city. 2. What is *celebrity name* Bacon Number – This is a fun little one that will tell you how many connections any given celebrity has to famed actor Kevin Bacon. The popular joke, Six Degrees of Kevin Bacon, is that no actor is more than 6 connections away from Kevin Bacon. Mark Zuckerberg has a Bacon Number of 3. 3. The math example posted above is another one. 4. What is the definition of *word* or Define: *word* – This will display the definition of a word. 5. Time *place* – This will display the time in whatever place you type in. 6. You can check any stock by typing its ticker name into Google. If you search for GOOG, it will check the stock prices for Google. These quick commands can take a web search that is usually multiple clicks and condense it into a single search. This is very helpful for information you need repeatedly. 16. Spelling doesn’t necessarily matter - Google search has gotten a lot smarter over the years. These days, you don’t even need to spell words correctly. As long as it’s pretty close, Google can usually figure out what it means. Here are some examples: If you search “Nver Gna Gve Yo Up” Google will automatically assume you mean to search for “Never Gonna Give You Up.” If by chance your misspelling was intentional, Google gives you the option to search for the misspelled term instead. This trick is great if you happen to forget how to spell something or are not altogether sure how something is spelled. It can also be helpful when searching for obscure words. This applies to capitalization and grammar as well. 17. Use descriptive words - Pretty much everything can be described in multiple ways. Take our namesake, the “life hack.” The terminology “hack” refers to a computer programmer breaking security on a network or system. However, when used in conjunction with the word “life”, it alters the meaning to tips and tricks people can use to improve their lives. If you have trouble finding what you’re searching for, keep in mind that people may search or define what you need in a different way than you do. ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 29 LIVING IN THE IT ERA 2020 You may search “How to install drivers in Ubunut?” When you really mean “Troubleshoot driver problems Ubuntu.” There really isn’t a good specific example for this one. If you search for something and you can’t find an answer, try asking the same question using different words and see if that helps the results. 18. Find a specific file - An often forgotten feature of Google search is the ability to search for a specific file or file type. This can be infinitely useful if you need a specific PDF or PowerPoint file that you previously viewed or need to use for another project. The syntax is quite simple: *Search term here* file type: pdf In the above example, you simply replace the search term with whatever you’re searching for. Then use the file type command and enter the extension of any file type you can think of. This can mostly be useful for scholarly purposes, but business presentations and other assorted presentations can benefit from this kind of search as well. 19. Money and unit conversions - Google search can quickly and accurately convert both measurement units and currency value. There are a variety of uses for this, like checking to see the conversion rate between two currencies. If you happen to be a math student, you can use it to convert from feet to meters or from ounces to liters. Here’s how to do it: miles to km – This will convert miles to kilometers. You can put numbers in front to convert a certain number. Like “10 miles to km” will show you how many kilometers are in 10 miles. USD to British Pound Sterling – This will convert a US dollar to British pounds. Like the measurements above, you can add numbers to find exact conversions for a certain amount of money. It’s true that this tip is geared toward math students and international business people. However, you’d be surprised how often these tips are used by regular people. 20. Track your packages - Our last trick is to use Google search to find out where your packages are. You can enter any UPS, USPS, or Fedex tracking number directly into the Google search bar, and it’ll show you the tracking information about your package. This is much easier than going to the specific sites, waiting for them to load, then searching for your packages there. No examples are really needed for this one. Just type your tracking number in and see where your package ANGELES, BALAGTAS, DE LEON, EUSEBIO, GALVEZ, GAN, GIRON 30