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UNIT Web Applications
4 and Security
Topics Covered 95%
Types of Impairment Computer Accessibility
Accessibility Options in an Operating System Networking Fundamentals
Internet Getting Access to Internet Through Internet Service Providers
Data Transfer on the Internet Steps to Check For Active Internet Connection
Concept of Instant Messaging (IM) Etiquettes To Be Followed While Chatting
Chatting Using Yahoo Messenger Creating and Publishing Web Pages (Blog)
Using an Offline Blog Editor What is Online Transaction?
What is Internet Security? Antivirus
General Guidelines for Managing Strong Passwords What is a Firewall?
Clearing Data Stored in Browsers Maintain Workplace Safety
What is First Aid? Prevent Accidents and Emergencies
Emergency Protecting Health and Safety At Work
Case Studies of Hazards/Accident due to Situations Avoidable
How to Keep Your Workspace Safe
By God’s grace, human beings are blessed with the best form of life among all living beings. Though some of them are
not so fortunate and lack the basic human characteristics like few are challenged by ears, few by eyes, some by limbs,
etc. But innovative exploration of ideas from human brain has triggered technology in a way that has empowered us
and has paved a way to overcome many such disabilities.
In simple words, we can say that technology plays a major role in overcoming the challenges faced by specially physically
challenged people. Similarly, the resources of web application which has evolved out of information technology, has
revolutionized humans to a great extent.
TYPES OF IMPAIRMENT
Though technology is quite advanced and easily accessible for all types of people. But people with different types of
impairment have different issues at the time of using computers.
Before we discuss about the accessibility options let us first learn about different types of impairment we see in people
around us:
• Cognitive impairments and learning disabilities: Children with learning disabilities like Dyslexia, Attention Deficit
Hyperactivity Disorder (ADHD) or autism may have problems in reading the content or in problem solving.
• Visual impairment: The eyes are not functioning properly and the vision is affected with the problems like low-
vision, complete or partial blindness, and color blindness. They will be facing the difficulty in reading the content
on screen and even as a print out.
• Motor or dexterity impairment: The limbs are not functioning properly then a person has one of the issues like
paralysis, cerebral palsy, or carpal tunnel syndrome or repetitive strain injury. A person may not be able to use their
arms or hands properly to operate a computer.
Web Applications and Security 337

