CEN 3721 ACTUAL EXAM TEST PAPER FULL QUESTIONS CORRECT RESPONSES
CEN 3721 Final EXAM 2026/2027 EXAM Script
Questions and Answers Verified Solutions Latest
Update
Question:
Nomenclature and Notations.
Answer:
- Graphical input device (GID): mechanism for communicating information, such as a location or
choice - Mouse, trackball, lightpen, tablet pen, joystick, touchpad, stylus - Used to control the
position of the cursor GID button: the principal button on any GID - Left button on a mouse ↓:
depressing a key ↑: releasing a depressed key Content, tap, click, drag, double-click, etc.
Question:
What are Modes?
Answer:
The system's current state that is manifested by how an interface responds to a gesture
Question:
Problems with Modes.
Answer:
- Toggles can be problematic - Label them with adjectives that describe the state of the object
affected, not with verbs that describe the action - Radio buttons are better yet Caps Lock key: How
do you know when it is on? - Typewriter Shift key could be physically locked in the down position -
Earlier keyboards had an indicator light to tell you when it was on How much of a problem is this? -
Later versions of Windows now report when the Caps Lock key is on during use of the Login screen
Question:
3 Ways to Minimize Mode Errors.
, Answer:
1. Do not have modes 2. Ensure that modes are distinctly marked 3. Ensure that the commands
required by different modes are not the same, so that a command issued in the wrong mode will not
lead to problems
Question:
What is a Gesture?
Answer:
A sequence of human actions completed as a set
Question:
Range of a Gesture.
Answer:
The set of states in which a gesture (g) has a particular interpretation Most applications consist of
one or more overlapping ranges, some large and some small Raskin: "A fully humane interface
would consist of exactly one range" - May not be possible or practical
Question:
Persistence of Modes.
Answer:
When you enter a mode, does the program stay in that mode indefinitely, or does it return to the
previous state after one command? Caps lock key: a permanent mode change Shift key: a temporary
mode change
Question:
Quasimode.
Answer:
A mode in which one must activate and hold a control while performing another action. Also
referred to as user-maintained mode, spring-loaded mode or spring-locked mode
CEN 3721 Final EXAM 2026/2027 EXAM Script
Questions and Answers Verified Solutions Latest
Update
Question:
Nomenclature and Notations.
Answer:
- Graphical input device (GID): mechanism for communicating information, such as a location or
choice - Mouse, trackball, lightpen, tablet pen, joystick, touchpad, stylus - Used to control the
position of the cursor GID button: the principal button on any GID - Left button on a mouse ↓:
depressing a key ↑: releasing a depressed key Content, tap, click, drag, double-click, etc.
Question:
What are Modes?
Answer:
The system's current state that is manifested by how an interface responds to a gesture
Question:
Problems with Modes.
Answer:
- Toggles can be problematic - Label them with adjectives that describe the state of the object
affected, not with verbs that describe the action - Radio buttons are better yet Caps Lock key: How
do you know when it is on? - Typewriter Shift key could be physically locked in the down position -
Earlier keyboards had an indicator light to tell you when it was on How much of a problem is this? -
Later versions of Windows now report when the Caps Lock key is on during use of the Login screen
Question:
3 Ways to Minimize Mode Errors.
, Answer:
1. Do not have modes 2. Ensure that modes are distinctly marked 3. Ensure that the commands
required by different modes are not the same, so that a command issued in the wrong mode will not
lead to problems
Question:
What is a Gesture?
Answer:
A sequence of human actions completed as a set
Question:
Range of a Gesture.
Answer:
The set of states in which a gesture (g) has a particular interpretation Most applications consist of
one or more overlapping ranges, some large and some small Raskin: "A fully humane interface
would consist of exactly one range" - May not be possible or practical
Question:
Persistence of Modes.
Answer:
When you enter a mode, does the program stay in that mode indefinitely, or does it return to the
previous state after one command? Caps lock key: a permanent mode change Shift key: a temporary
mode change
Question:
Quasimode.
Answer:
A mode in which one must activate and hold a control while performing another action. Also
referred to as user-maintained mode, spring-loaded mode or spring-locked mode
