Base Class Library interview questions

1. A.the primary type for sending requests and receiving responses over HTTP, designed to be reused rather than created per call
2. B.the foundational set of types shipped with the platform covering collections, I/O, text, networking and more
3. C.a heap-storable counterpart to the stack-only window type, usable in asynchronous methods where the restricted type cannot live
4. D.the built-in, high-performance serializer for reading and writing JavaScript Object Notation, replacing older third-party defaults

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1. A.Memory of T
2. B.Base Class Library
3. C.Span of T
4. D.System.Text.Json

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1. A.Base Class Library — the foundational set of types shipped with the platform covering collections, I/O, text, networking and more
2. B.Base Class Library — a stack-only value type giving a bounds-checked window over contiguous memory such as arrays or slices without copying
3. C.Base Class Library — the built-in, high-performance serializer for reading and writing JavaScript Object Notation, replacing older third-party defaults
4. D.Base Class Library — the primary type for sending requests and receiving responses over HTTP, designed to be reused rather than created per call

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1. A.a heap-storable counterpart to the stack-only window type, usable in asynchronous methods where the restricted type cannot live
2. B.the foundational set of types shipped with the platform covering collections, I/O, text, networking and more
3. C.the namespace of strongly typed containers such as lists, dictionaries and queues that avoid boxing and casting
4. D.the primary type for sending requests and receiving responses over HTTP, designed to be reused rather than created per call

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1. A.Generic collections
2. B.System.Text.Json
3. C.HttpClient
4. D.Base Class Library

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1. A.Generic collections — the built-in, high-performance serializer for reading and writing JavaScript Object Notation, replacing older third-party defaults
2. B.Generic collections — the foundational set of types shipped with the platform covering collections, I/O, text, networking and more
3. C.Generic collections — the namespace of strongly typed containers such as lists, dictionaries and queues that avoid boxing and casting
4. D.Generic collections — the primary type for sending requests and receiving responses over HTTP, designed to be reused rather than created per call

Answer + AI explanation with Pro

1. A.a heap-storable counterpart to the stack-only window type, usable in asynchronous methods where the restricted type cannot live
2. B.the namespace of strongly typed containers such as lists, dictionaries and queues that avoid boxing and casting
3. C.the built-in, high-performance serializer for reading and writing JavaScript Object Notation, replacing older third-party defaults
4. D.the primary type for sending requests and receiving responses over HTTP, designed to be reused rather than created per call

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1. A.System.Text.Json
2. B.Memory of T
3. C.Base Class Library
4. D.Generic collections

Answer + AI explanation with Pro

1. A.System.Text.Json — a stack-only value type giving a bounds-checked window over contiguous memory such as arrays or slices without copying
2. B.System.Text.Json — the namespace of strongly typed containers such as lists, dictionaries and queues that avoid boxing and casting
3. C.System.Text.Json — the built-in, high-performance serializer for reading and writing JavaScript Object Notation, replacing older third-party defaults
4. D.System.Text.Json — the primary type for sending requests and receiving responses over HTTP, designed to be reused rather than created per call

Answer + AI explanation with Pro

1. A.a heap-storable counterpart to the stack-only window type, usable in asynchronous methods where the restricted type cannot live
2. B.the foundational set of types shipped with the platform covering collections, I/O, text, networking and more
3. C.the primary type for sending requests and receiving responses over HTTP, designed to be reused rather than created per call
4. D.the namespace of strongly typed containers such as lists, dictionaries and queues that avoid boxing and casting

Answer + AI explanation with Pro

1. A.Memory of T
2. B.Span of T
3. C.Generic collections
4. D.HttpClient

Answer + AI explanation with Pro

1. A.HttpClient — the namespace of strongly typed containers such as lists, dictionaries and queues that avoid boxing and casting
2. B.HttpClient — a stack-only value type giving a bounds-checked window over contiguous memory such as arrays or slices without copying
3. C.HttpClient — a heap-storable counterpart to the stack-only window type, usable in asynchronous methods where the restricted type cannot live
4. D.HttpClient — the primary type for sending requests and receiving responses over HTTP, designed to be reused rather than created per call

Answer + AI explanation with Pro

1. A.the primary type for sending requests and receiving responses over HTTP, designed to be reused rather than created per call
2. B.a stack-only value type giving a bounds-checked window over contiguous memory such as arrays or slices without copying
3. C.a heap-storable counterpart to the stack-only window type, usable in asynchronous methods where the restricted type cannot live
4. D.the foundational set of types shipped with the platform covering collections, I/O, text, networking and more

Answer + AI explanation with Pro

1. A.Span of T
2. B.System.Text.Json
3. C.Generic collections
4. D.Memory of T

Answer + AI explanation with Pro

1. A.Span of T — the built-in, high-performance serializer for reading and writing JavaScript Object Notation, replacing older third-party defaults
2. B.Span of T — the primary type for sending requests and receiving responses over HTTP, designed to be reused rather than created per call
3. C.Span of T — a stack-only value type giving a bounds-checked window over contiguous memory such as arrays or slices without copying
4. D.Span of T — the foundational set of types shipped with the platform covering collections, I/O, text, networking and more

Answer + AI explanation with Pro

1. A.the foundational set of types shipped with the platform covering collections, I/O, text, networking and more
2. B.a heap-storable counterpart to the stack-only window type, usable in asynchronous methods where the restricted type cannot live
3. C.the namespace of strongly typed containers such as lists, dictionaries and queues that avoid boxing and casting
4. D.the built-in, high-performance serializer for reading and writing JavaScript Object Notation, replacing older third-party defaults

Answer + AI explanation with Pro

1. A.Memory of T
2. B.HttpClient
3. C.Generic collections
4. D.System.Text.Json

Answer + AI explanation with Pro

1. A.Memory of T — a stack-only value type giving a bounds-checked window over contiguous memory such as arrays or slices without copying
2. B.Memory of T — a heap-storable counterpart to the stack-only window type, usable in asynchronous methods where the restricted type cannot live
3. C.Memory of T — the primary type for sending requests and receiving responses over HTTP, designed to be reused rather than created per call
4. D.Memory of T — the built-in, high-performance serializer for reading and writing JavaScript Object Notation, replacing older third-party defaults

Answer + AI explanation with Pro