15 Data Binding questions from the Blazor bank, written for Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd.
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A.the modifier that controls which DOM event triggers the update of a two-way bound value, such as oninput versus onchange
B.rendering a C# value into markup so the display updates when the value changes but user input does not flow back
C.a type a child exposes so it can notify its parent of an event and trigger the parent to re-render
D.the directive that synchronizes a form element's value with a C# field in both directions automatically
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2. Which term means: "rendering a C# value into markup so the display updates when the value changes but user input does not flow back"?
Junior
A.bind:event
B.One-way binding
C.EventCallback
D.Two-way binding (@bind)
Answer + AI explanation with Pro
3. Which statement is correct?
Junior
A.One-way binding — the modifier that controls which DOM event triggers the update of a two-way bound value, such as oninput versus onchange
B.One-way binding — the directive that wires a DOM event such as a button press to a C# handler method
C.One-way binding — the directive that synchronizes a form element's value with a C# field in both directions automatically
D.One-way binding — rendering a C# value into markup so the display updates when the value changes but user input does not flow back
Answer + AI explanation with Pro
4. What is Two-way binding (@bind)?
Junior
A.the directive that wires a DOM event such as a button press to a C# handler method
B.the modifier that controls which DOM event triggers the update of a two-way bound value, such as oninput versus onchange
C.a type a child exposes so it can notify its parent of an event and trigger the parent to re-render
D.the directive that synchronizes a form element's value with a C# field in both directions automatically
Answer + AI explanation with Pro
5. Which term means: "the directive that synchronizes a form element's value with a C# field in both directions automatically"?
Junior
A.Event binding (@onclick)
B.EventCallback
C.Two-way binding (@bind)
D.bind:event
Answer + AI explanation with Pro
6. Which statement is correct?
Junior
A.Two-way binding (@bind) — the modifier that controls which DOM event triggers the update of a two-way bound value, such as oninput versus onchange
B.Two-way binding (@bind) — rendering a C# value into markup so the display updates when the value changes but user input does not flow back
C.Two-way binding (@bind) — a type a child exposes so it can notify its parent of an event and trigger the parent to re-render
D.Two-way binding (@bind) — the directive that synchronizes a form element's value with a C# field in both directions automatically
Answer + AI explanation with Pro
7. What is Event binding (@onclick)?
Junior
A.the directive that wires a DOM event such as a button press to a C# handler method
B.a type a child exposes so it can notify its parent of an event and trigger the parent to re-render
C.rendering a C# value into markup so the display updates when the value changes but user input does not flow back
D.the modifier that controls which DOM event triggers the update of a two-way bound value, such as oninput versus onchange
Answer + AI explanation with Pro
8. Which term means: "the directive that wires a DOM event such as a button press to a C# handler method"?
Junior
A.EventCallback
B.Two-way binding (@bind)
C.Event binding (@onclick)
D.One-way binding
Answer + AI explanation with Pro
9. Which statement is correct?
Junior
A.Event binding (@onclick) — a type a child exposes so it can notify its parent of an event and trigger the parent to re-render
B.Event binding (@onclick) — rendering a C# value into markup so the display updates when the value changes but user input does not flow back
C.Event binding (@onclick) — the directive that wires a DOM event such as a button press to a C# handler method
D.Event binding (@onclick) — the directive that synchronizes a form element's value with a C# field in both directions automatically
Answer + AI explanation with Pro
10. What is EventCallback?
Mid
A.the modifier that controls which DOM event triggers the update of a two-way bound value, such as oninput versus onchange
B.a type a child exposes so it can notify its parent of an event and trigger the parent to re-render
C.the directive that wires a DOM event such as a button press to a C# handler method
D.the directive that synchronizes a form element's value with a C# field in both directions automatically
Answer + AI explanation with Pro
11. Which term means: "a type a child exposes so it can notify its parent of an event and trigger the parent to re-render"?
Mid
A.Event binding (@onclick)
B.EventCallback
C.bind:event
D.Two-way binding (@bind)
Answer + AI explanation with Pro
12. Which statement is correct?
Mid
A.EventCallback — rendering a C# value into markup so the display updates when the value changes but user input does not flow back
B.EventCallback — the directive that wires a DOM event such as a button press to a C# handler method
C.EventCallback — the directive that synchronizes a form element's value with a C# field in both directions automatically
D.EventCallback — a type a child exposes so it can notify its parent of an event and trigger the parent to re-render
Answer + AI explanation with Pro
13. What is bind:event?
Mid
A.the directive that synchronizes a form element's value with a C# field in both directions automatically
B.the modifier that controls which DOM event triggers the update of a two-way bound value, such as oninput versus onchange
C.the directive that wires a DOM event such as a button press to a C# handler method
D.rendering a C# value into markup so the display updates when the value changes but user input does not flow back
Answer + AI explanation with Pro
14. Which term means: "the modifier that controls which DOM event triggers the update of a two-way bound value, such as oninput versus onchange"?
Mid
A.Event binding (@onclick)
B.bind:event
C.EventCallback
D.One-way binding
Answer + AI explanation with Pro
15. Which statement is correct?
Mid
A.bind:event — a type a child exposes so it can notify its parent of an event and trigger the parent to re-render
B.bind:event — rendering a C# value into markup so the display updates when the value changes but user input does not flow back
C.bind:event — the modifier that controls which DOM event triggers the update of a two-way bound value, such as oninput versus onchange
D.bind:event — the directive that wires a DOM event such as a button press to a C# handler method
Answer + AI explanation with Pro
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