SPPM 1013 : TELECOMMUNICATION & NETWORKING

NETWORKING & COMPUTER SECURITY What is Computer Security? Computer Security is the protection of computing systems and the data that they store or access. Why is Computer Security Important? Computer Security allows the University to carry out its mission by: Enabling people to carry out their jobs, education, and research Supporting critical business process Protecting personal and sensitive information https://familysearch.org/blog/en/phishing-scams-viruses-trojan-horses-how-to-protect-computer/ NETWORK SECURITY CERTIFICATES SSL (secure socket layer certificates) small data files that digitally bind a cryptographic key to an organization details. allow secure connections from a web server to a browser when installed a web server ,it activates the padlock and the https protocol ssl is used to secure credit card transaction, data transfer, and logins.

what is HTML? 😕 Hyper Text Markup Language is the language used to tag various parts of a web documents so browsing software will know how to display that documents links, text, graphics, attached media. HTML files text file containing small markup tags the markup tags tell the web browser how to display the page HTML file must have an htm or html file extension an html file can be created using a simple text editor  example of HTML which consists head, title and body https://www.upwork.com/blog/2014/03/10-best-web-development-tutorials-beginners/ this link will show 10 best web development tutorials for beginner ↑ REFLECTION in this topic, i was taught by my lecturer how to create HTML in computer. it was so exciting that i can create sort of like my own website. 

INTERNET APPLICATION asynchronous applications online discussion forum communication that is not occurring at the same time the relay of information with a time lag discussion forum and email are the examples that are employed in online learning pros : students have plenty of time to formulate thoughts , able to respond in details, make research  cons :  time lost waiting for the responses synchronous applications communication that occur at the same time example : chat rooms, online conference real time conversation allow people to explore, through writing or talking, the class concepts other applications : youtube, podcast, social networking, Live Virtual Classroom. REFLECTION to sum up, i really love all of these applications because they really help me as student in learning process. they ease my task and easy to be accessed too. As a future teacher, i also realize that i really n

BASIC EMAIL OPERATION email is a mail ,but it is sent electronically across the internet.  quickly delivered in seconds or minutes.  the advantages of email : disadvantages of email : email client software/program that can transfer email from a local host to a local email server. email server software/program that can send/receive email from/to other email servers. mailbox an electronic mailbox is a disk file which holds email messages http://www.samlogic.net/articles/mail-server.htm email address we need the email address of the recipient & user/host domain name of the mail server user name of the recipient username and host name are separated by '@' email clients an application that runs on a personal computer or workstation and enables people to send ,receive and organize email mail is sent from many clients to a central server, which re-routes the mai

INTRODUCTION TO WEB BROWSER 💃 web browser can be defined as a software application used to locate and display web. the popular browser such as Internet Explorer, Nestcape, Mozilla Firefox, Safari, and etc.  buttons function : open & save history, URL and favourite/bookmark SEARCH ENGINES 😍 A computer program that allows users to submit a query that consists of a word or phrase. searches the database return a list of suitable URL's which match your query allows users to revise and resubmit SEARCHING TECHNIQUES 💚 history, URL and favourite / bookmark clear history clear cache clear URL save using bookmark/favourite setting default page multitasking

INTERNET PROTOCOL -Internet is a global collection of network -interconnected computers work by transmitting data through a special type of packet switching which is known as the IP (internet protocol) -when you connect to the internet, your computer becomes part of a work. a hierarchy of networks -from a single computer to LAN -from LAN to ISP  -ISP to WWW INTERNET PROTOCOL 💃 Every machine on the internet has a unique identifying number, called an IP address the IP stands for internet protocol ,which is the language that computers use to communicate over the internet. a protocol is the pre-defined way that someone who wants to use a service talks with that service.  a typical IP looks like this 216.27.61.137 an IP address consists of 32 bits, often shows as 4 octets of numbers from 0-255  DOMAIN NAME SYSTEM internet services that translate domain name like www.hotwired.com into into numerical IP address like 204.62.131.1