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Why does GraphQL require fragments to specify the type they apply to?

hard📝 Conceptual Q10 of 15
GraphQL - Queries
Why does GraphQL require fragments to specify the type they apply to?
ATo encrypt data fields for security
BTo improve query execution speed by caching fragments
CBecause fields vary by type and fragments must match the schema type
DBecause fragments define new types in the schema
Step-by-Step Solution
Solution:

  1. Step 1: Understand GraphQL type system

    Each type in GraphQL has its own fields. Fragments must specify the type to ensure fields are valid for that type.

  2. Step 2: Analyze options

    Because fields vary by type and fragments must match the schema type correctly explains the reason. Other options describe unrelated concepts.

  3. Final Answer:

    Because fields vary by type and fragments must match the schema type -> Option C

  4. Quick Check:

    Fragment type ensures valid fields per schema [OK]
Quick Trick: Fragments specify type to match valid fields in schema [OK]
Common Mistakes:
  • Thinking fragments speed up queries
  • Assuming fragments encrypt data
  • Believing fragments create new types

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