Summary
Highlights
The video introduces various basic internet services, including communication, information retrieval, worldwide web, web services, directory services, NetNewsGroup, and e-commerce. The lecture will delve into each service one by one, starting with communication services.
Communication is a primary internet service, often used daily to connect with family and friends. This category includes instant messaging (IM), email, and video conferencing. Instant messaging allows real-time text communication and is a rapidly growing form of online interaction. Popular IM platforms include Facebook, Skype, Hangouts, and WhatsApp, with WhatsApp having the highest number of active users.
Email, or electronic mail, is another popular communication service for exchanging text, images, and videos. By 1996, email usage surpassed postal mail. Key features of email include instant communication, options for one-to-one or one-to-many communication, and its free and accessible nature, requiring only an internet connection and an email service provider like Gmail or Outlook. The MIME standard, proposed in 1991, expanded email capabilities to include various data files beyond text.
Advantages of email include its cost-effectiveness, speed, ability to send various data types (after 1991 with MIME), and accessibility from anywhere with an internet connection. However, email also has disadvantages: recipients need internet access, it can spread viruses via attachments, it's susceptible to phishing scams that lead to identity theft, there's no guarantee the message will be read immediately, and spam (unwanted email) is a common issue.
Video conferencing enables two or more people in different locations to have live audio-video communication, emulating face-to-face conversations. It requires a high-bandwidth internet connection, webcams on both ends, display screens, and video conferencing software such as WebEx, Zoom, Skype, or Google Meet. The lecturer notes personal experience with employers requiring communication via Skype or WhatsApp for online job interviews.
The video concludes by asking viewers to consider additional advantages and disadvantages of video conferencing not mentioned in the lecture and to share their thoughts in the comments section.