Human Computer Interaction and User Experience

Daffodil International University Faculty of Science & Information Technology Department of Information Technology & Management Mid-Term Examination, Fall 2025 Course Code: ITM 211; Course Title: HCI and User Experience Sections & Teachers: A (AR) Time: 1:30 Hours Marks: 25 Answer ALL Questions [The figures in the right margin indicate the full marks. All portions of each question must be answered sequentially.] 1. a) Explain the concept of Human Computer Interaction (HCI) and User Experience (UX) with example. [Marks-2] CLO-1 Level-2 b) Break down the concepts of prototyping in HCI. Provide a real-life example. [Marks-3] CLO-1 Level-4 2. a) Compare and contrast between formal and informal usability studies. [Marks-2] CLO-1 Level-4 b) Explain the different types of information input and output (I/O), including visual, auditory, haptic, and movement. [Marks 3] CLO-1 Level-2 3. a) Analyze the Ponzo Illusion and the Müller-Lyer Illusion. Illustrate both illusions with diagrams. [Marks-3] CLO-2 Level-4 b) Describe the 3 types of memory storage in human cognition: Sensory Memory, Short-Term Memory, and Long-Term Memory with example. [Marks-2] CLO-2 Level-2 4. a) You are using a smartphone and need to tap on a "Camera" app icon. Two interface designs are provided: Design A - The icon is 8 cm away from your thumb's resting position and is 1.5 cm wide. Design B - The icon is 4 cm away from your thumb's resting position and is 3 cm wide. [Marks-5] CLLO-2 Level-3 Using Fitts' Law, evaluate which design provides a better UX in terms of speed and accuracy. Justify your conclusion based on HCI principles and UX concepts. 5. a) Summarize the seven stages of Donald Norman's model of interaction in the context of using a university web portal to submit an online assignment. [Marks-5] CLO-3 Level-4