ExamII Preparing essay

You are programming a modal dialog box (which is a form of pre-emotive dialog) in a notification-based programming paradigm. This A Is easy, because the paradigm naturally leads to modal dialog boxes B Requires the programming of an inner read-evaluation loop C Is difficult, because the control flow is out of the hands of the application programmer D Is a nonsensical question, because a modal dialog box is not pre-emotive.

4. When evaluation occurs at the end of the design process on a fully working system it is called A Formative B Coin dive C Assumptive D Qualitative 5. Which statement best describes the benefit of a field studyA All aspects of the evaluation can be controlled leading to precise results B Specialist equipment is easily available for recording the evaluation C The subject is not influenced by the presence of the evaluator D It allows the interaction to be studied in context 6. If five expert evaluators independently analyses an interface using a heuristic evaluation what percentage of usability problems is likely to be uncovered? 7. Which are necessary features of an effective cognitive Walworth? (I) The evaluation is done by a team of evaluators working independently. (ii) An executable prototype is used to walk through the expected task sequence.

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Ii) A believable story is formulated for every step in the task sequence. (iv) Background information (e. G. , knowledge of application domain and experience with interface style) of the intended user population should be known. A (iii) & (iv) B (ii), (iii) & (iv) C (iii) & (iv) D All of these 8. An example-based technique for knowledge representation makes use of A a set of rules and facts interpreted logically B a structure containing labeled slots to which values may be assigned C a hierarchy of relationships between facts D a decision structure of a classification system 9.

The four main types of assistance required by users are A quick reference, task-specific help, full explanation, tutorial B quick reference, task-specific help, command assistance, tutorial C adaptive help, task-specific help, full explanation, tutorial D quick reference, on-line documentation, full explanation, command assistance 10. Adaptive help is an instance of which class of interactive system A intelligent B collaborative C multi-modal D expert 11. Models are used in design to A Generate the design B Evaluate the design C Both Of the above D Neither of the above 12.

Which of the following best describes a stakeholder AAA person who uses an interactive computer system B A person who has invested time or money in developing an interactive computer system C A person who receives output from or provides input to an interactive computer system D A person who is affected by the success or failure of an interactive computer system 13. In developing a hierarchical decomposition of a user’s goal structure, as is done commonly in a GEMS evaluation, an operator is the lowest level of decomposition unit. TRUE/FALSE 14.How can designers of video conferencing systems protect the participants’ sense of personal space? A By using a video tunnel B By making participants Stay in one place C By allowing participants to adjust the zoom on their own camera D By allowing participants to adjust the zoom on each others’ camera 15.

What is common ground? A Unification of knowledge and background B Shared understanding sufficient for current task C An attempt to interpret an utterance correctly D The process of negotiating meaning 16. What is the main effect of reducing the pace of a conversation?A Granularity is reduced B Interactivity is reduced C Interactivity is increased D Feedback is increased 17. What are the power positions in a standard electronic meeting room? A The front of the room B The back of the room C The centre of the room D There are no power positions in electronic meeting rooms 18. Visual displays are the primary output device because Awe all have similar capabilities in vision B it is easiest to make visual displays C the visual channel is our best-developed one D if sound was used the deaf would be at a disadvantage 19.

The phonetic typewriter is A a cross between a word-processor and a typewriter B a speech-synthesis system that types out words C the name given to old-fashioned mechanical typewriters D a neural network-based system that produces typed output from spoken input 20. Problems with speech recognition include I) lack of accuracy (ii) slow processing (iii) interference with other users (iv) the transient nature of the output A (ii) & (iii) B (ii) & (iii) C (ii), (iii) & D (iii) & (iv) 21 .

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