Resolvers interview questions

18 real Resolvers questions from the GraphQL bank, as asked in Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd — free to start.

1. What is Resolver?

Junior
  1. A.a function that produces the value for a single field, forming the unit of execution in the engine
  2. B.the parent-to-child execution order where each field's resolver runs after and uses its parent's result
  3. C.the resolver parameter carrying execution details such as the field name, return type and selected subfields (AST)
  4. D.the first resolver parameter holding the value returned by the field's parent, used to derive the child value
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3. Which statement is correct?

Junior
  1. A.Resolver — the implicit behavior that returns the same-named property of the parent object when no explicit field function is given
  2. B.Resolver — a function that produces the value for a single field, forming the unit of execution in the engine
  3. C.Resolver — the resolver parameter carrying execution details such as the field name, return type and selected subfields (AST)
  4. D.Resolver — the first resolver parameter holding the value returned by the field's parent, used to derive the child value
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4. What is Parent argument?

Mid
  1. A.a function that produces the value for a single field, forming the unit of execution in the engine
  2. B.the implicit behavior that returns the same-named property of the parent object when no explicit field function is given
  3. C.the parent-to-child execution order where each field's resolver runs after and uses its parent's result
  4. D.the first resolver parameter holding the value returned by the field's parent, used to derive the child value
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6. Which statement is correct?

Mid
  1. A.Parent argument — the per-request shared object, holding auth and data sources, passed to every resolver in one operation
  2. B.Parent argument — the first resolver parameter holding the value returned by the field's parent, used to derive the child value
  3. C.Parent argument — the implicit behavior that returns the same-named property of the parent object when no explicit field function is given
  4. D.Parent argument — the resolver parameter carrying execution details such as the field name, return type and selected subfields (AST)
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7. What is Context argument?

Mid
  1. A.the parent-to-child execution order where each field's resolver runs after and uses its parent's result
  2. B.the per-request shared object, holding auth and data sources, passed to every resolver in one operation
  3. C.the first resolver parameter holding the value returned by the field's parent, used to derive the child value
  4. D.a function that produces the value for a single field, forming the unit of execution in the engine
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9. Which statement is correct?

Mid
  1. A.Context argument — the per-request shared object, holding auth and data sources, passed to every resolver in one operation
  2. B.Context argument — the resolver parameter carrying execution details such as the field name, return type and selected subfields (AST)
  3. C.Context argument — the implicit behavior that returns the same-named property of the parent object when no explicit field function is given
  4. D.Context argument — a function that produces the value for a single field, forming the unit of execution in the engine
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10. What is Info argument?

Mid
  1. A.the implicit behavior that returns the same-named property of the parent object when no explicit field function is given
  2. B.a function that produces the value for a single field, forming the unit of execution in the engine
  3. C.the first resolver parameter holding the value returned by the field's parent, used to derive the child value
  4. D.the resolver parameter carrying execution details such as the field name, return type and selected subfields (AST)
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12. Which statement is correct?

Mid
  1. A.Info argument — the implicit behavior that returns the same-named property of the parent object when no explicit field function is given
  2. B.Info argument — the resolver parameter carrying execution details such as the field name, return type and selected subfields (AST)
  3. C.Info argument — the first resolver parameter holding the value returned by the field's parent, used to derive the child value
  4. D.Info argument — the per-request shared object, holding auth and data sources, passed to every resolver in one operation
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13. What is Resolver chain?

Junior
  1. A.the implicit behavior that returns the same-named property of the parent object when no explicit field function is given
  2. B.a function that produces the value for a single field, forming the unit of execution in the engine
  3. C.the parent-to-child execution order where each field's resolver runs after and uses its parent's result
  4. D.the first resolver parameter holding the value returned by the field's parent, used to derive the child value
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15. Which statement is correct?

Junior
  1. A.Resolver chain — a function that produces the value for a single field, forming the unit of execution in the engine
  2. B.Resolver chain — the parent-to-child execution order where each field's resolver runs after and uses its parent's result
  3. C.Resolver chain — the implicit behavior that returns the same-named property of the parent object when no explicit field function is given
  4. D.Resolver chain — the per-request shared object, holding auth and data sources, passed to every resolver in one operation
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16. What is Default resolver?

Senior
  1. A.the first resolver parameter holding the value returned by the field's parent, used to derive the child value
  2. B.the parent-to-child execution order where each field's resolver runs after and uses its parent's result
  3. C.the implicit behavior that returns the same-named property of the parent object when no explicit field function is given
  4. D.the per-request shared object, holding auth and data sources, passed to every resolver in one operation
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17. Which term means: "the implicit behavior that returns the same-named property of the parent object when no explicit field function is given"?

Senior
  1. A.Info argument
  2. B.Parent argument
  3. C.Resolver chain
  4. D.Default resolver
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18. Which statement is correct?

Senior
  1. A.Default resolver — the parent-to-child execution order where each field's resolver runs after and uses its parent's result
  2. B.Default resolver — the per-request shared object, holding auth and data sources, passed to every resolver in one operation
  3. C.Default resolver — the implicit behavior that returns the same-named property of the parent object when no explicit field function is given
  4. D.Default resolver — the resolver parameter carrying execution details such as the field name, return type and selected subfields (AST)
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