Important Short Questions and Answers: User Interface Design

1.     How can you evaluate the popularity of the web user interface?

We can evaluate the popularity of web usage depend on the following.

The number of Internet hosts has risen dramatically

In 1984 hosts online exceeded 1,000;

In 1987, 10,000;

In 1989, 100,000;

In 1990, 300,000;

In 1992 hosts exceeded one million.

In 1996, 10 million host

In 2009, Billion host

Fast download.

Quick Navigation.

Proper organization of web pages.

2.     What are the advantages of having a good user interface?

Advantages of a Good User Interface

Fast learning.

Faster use and problem solving.

Easier remembering.

Provide context.

Immediate feedback.

Fewer errors.

Foster more concrete thinking.

Increased feeling of control.

3.What is human computer interface?

User interface design is a subset of a field of study called human computer interaction (HCI).

Human computer interaction is the study, planning and design of how people and computer work together.

Lowest and most common level in human interface is movement and gestures language dependent.

Next higher level is spoken language. Third and highest level is written language.

4.Give the reason for popularity of a user interface?

The user interface is the part of a computer and its software the people can see, hear, touch, talk to or otherwise understand.

User interface has 2 components input and output-keyboard, mouse, trackball are

input and computer conveys the result of its computation is output.

Proper user interface ill provide a mix of well designed input and output mechanism that satisfy the user’s needs, capacities and limitations in the most effective way.

5.State        the        impact        of                    human    characteristics         on     user           interface       design?

Perception, memory, visual acuity, foveal and peripheral vision, sensory storage, information processing, learning, skill, individual differences skill the user interface design.

6. State some features which affect popularity of web user interface.

Graphics revolutionized design and the user interface. Graphics assumes three

dimensional look whereas text based system assumes one dimensional look.

Information can appear or disappear through floating windows and navigation and

commands can be done through menu or pull downs or screen controls

Increased computer power and the vast improvement in the display enable the user’s actions to be reacted to quickly, dynamically, and meaningfully.

7.What is the need for direct manipulation?

The system is portrayed as an extension of the real world.

Objects and actions are continuously visible.

Actions are rapid and incremental with visible display of results.

8.Define visualization?

Visualization is a cognitive process that allows people to understand information that is difficult to perceive, because it is either too voluminous or too abstract. Convey most relevant information.

Maintaining top to bottom and left to right flow through the screen for visualization.

9.State some of the  benefits of       good user interface design.

Another researcher has reported that reformatting inquiry screens following good design principles reduced decision-making time by about 40 percent, resulting in a savings of 79 person-years in the affected system.

Other benefits also accrue from good design (Karat, 1997). Training costs are lowered because training time is reduced, support line costs are lowered because fewer assist calls are necessary, and employee satisfaction is increased because aggravation and frustration are reduced.

10. State the Characteristics Direct Manipulation.

The system is portrayed as an extension of the real world

Continuous visibility of objects and actions:

Actions are rapid and incremental with visible display of results

Incremental actions are easily reversible:

11.List any four Graphical system disadvantages.

Greater design complexity

Learning still necessary

Lack of experimentally-derived design guidelines

Ø Inconsistencies in technique and terminology

12.How would you rate the popularity of user interface?

Graphics revolutionized design and the user interface. Graphics assumes three dimensional look whereas text based system assumes one dimensional look.

Information can appear or disappear through floating windows and navigation and commands can be done through menu or pull downs or screen controls

Increased computer power and the vast improvement in the display enable the user’s actions to be reacted to quickly, dynamically, and meaningfully.

If properly used graphics can reduce mental and perceptional load and increases

information transfer between men and machine because of visual comparisons and simplification of the perception of structure.

What is meant by transparency?

Permit the user to focus on the task or job without concern for the mechanics of the interface.

14. Define user interface? What are the components of user interface.

It is a collection of techniques and mechanisms to interact with something. It has two components Input & Output.

15 .What are the five ways to provide simplicity?

Use progressive disclosure, hiding things until they are needed.

Provide defaults.

Minimize screen alignment points.

Provide Uniformity & consistency.

16. Differentiate the term Internet, Intranet and Extranet.

Intranet: Within organization internal network over a shared infrastructure using dedicate connections.

Internet: It is a huge network of computer networks.

Extranet: An extranet is a Special set of intranet that can be accessed by authorized persons from outside an organization or company

17. Write any 2 differences between GUI and Webpage design.

GUI design

Characteristics of interface such as monitor and modem are well designed

It navigate through structured menus ,lists ,screens dialogs and wizards

Webpage design

The user device may range from handheld mechanism to high end work station

It navigate through links, book marks and typed URL’s.

18.Write any 2 differences between Printed page versus Web pages?

Printed page

Layout is precise

They are presented as complete entities and their entire contents are available for reading or review immediately.

Web pages

Layout is approximation

They are rendered slowly depending upon transmission speeds and page content

19. Define concurrent performance of functions.

Graphic system may do 2 or more things at one time.

Multiple programs may run simultaneously.

20. What are the goals of web interface design?

It is to build hierarchy of menus and pages tat well structured.

It is graphically rich environment.

21. What is meant by web interface design?

It is essentially the design of navigation and the presentation of information.

Proper interface design is matter of properly balancing the Structure and relationships of menus, content and other linked documents or graphics.

22. What are the similarities between GUI and web interface design?

They are interactive.

Both are used by people.

Both are software design.

23. What is an object and its types?

Object is an entity.

It can be manipulated as a single unit.

Objects can be classified into 3 types.

Data object.

Container object.

Device object.

24. Define property/attribute specification and explain its sequence.

Property / attribute specification action establish or modify the attributes or properties of objects.

Property / attribute specification sequence

The user selects an object (ex) several words of text.

The user then selects an action to apply to that object such as the action Bold.