Interview Q&A

Master technical and career interviews with structured answers—short definition, real examples, pitfalls, and how to answer in 60–90 seconds.

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Microservices with .NET 697 C# Programming Tutorial 519 Design Patterns in C# 476 Developer Essentials 347 Microsoft Azure Tutorial 344 SQL Server Tutorial 310 JavaScript Tutorial 286 ASP.NET Core Tutorial 261 LINQ Tutorial 221 Node.js Tutorial 165 React.js Tutorial 160 Entity Framework Core Tutorial 154
Junior PDF
What is git bisect?

Short answer: A command used to find the commit that introduced a bug by performing a binary search on the commit history. Real-world example (ShopNest) ShopNest’s team uses GitHub PRs with reviews and CI checks so broke…

Version Control Read answer
Junior PDF
What is git fsck?

Short answer: Checks the integrity of the Git file system. Real-world example (ShopNest) ShopNest’s team uses GitHub PRs with reviews and CI checks so broken builds never reach production unnoticed. Say this in the inter…

Version Control Read answer
Junior PDF
What is git gc?

Short answer: Cleans up unnecessary files and optimizes the local repository. Real-world example (ShopNest) ShopNest’s team uses GitHub PRs with reviews and CI checks so broken builds never reach production unnoticed. Sa…

Version Control Read answer
Junior PDF
What is a "fast-forward" merge?

Short answer: A merge where the branch being merged can simply be moved forward to the tip of the other branch without creating a new merge commit. Real-world example (ShopNest) Feature work for “UPI payment” lives on fe…

Version Control Read answer
Junior PDF
What is a "fast-forward" merge?

Short answer: simply be moved forward to the tip of the other branch without creating a new merge commit. Real-world example (ShopNest) Feature work for “UPI payment” lives on feature/upi-payment . Open a PR to main ; re…

Version Control Read answer
Junior PDF
What is a "three-way" merge?

Short answer: common ancestor to determine how to combine changes, potentially creating a new merge commit. Long Answers: Real-world example (ShopNest) Feature work for “UPI payment” lives on feature/upi-payment . Open a…

Version Control Read answer
Junior PDF
What is a "three-way" merge?

Short answer: A merge that involves the two branch tips and their common ancestor to determine how to combine changes, potentially creating a new merge commit. Long Answers: Real-world example (ShopNest) Feature work for…

Version Control Read answer

Git & GitHub Developer Essentials · Version Control

Short answer: A command used to find the commit that introduced a bug by performing a binary search on the commit history.

Real-world example (ShopNest)

ShopNest’s team uses GitHub PRs with reviews and CI checks so broken builds never reach production unnoticed.

Say this in the interview

  1. Define — one clear sentence (the short answer above).
  2. Example — relate it to a project like ShopNest or your real work.
  3. Trade-off — when you would not use it.
Permalink & share

Git & GitHub Developer Essentials · Version Control

Short answer: Checks the integrity of the Git file system.

Real-world example (ShopNest)

ShopNest’s team uses GitHub PRs with reviews and CI checks so broken builds never reach production unnoticed.

Say this in the interview

  1. Define — one clear sentence (the short answer above).
  2. Example — relate it to a project like ShopNest or your real work.
  3. Trade-off — when you would not use it.
Permalink & share

Git & GitHub Developer Essentials · Version Control

Short answer: Cleans up unnecessary files and optimizes the local repository.

Real-world example (ShopNest)

ShopNest’s team uses GitHub PRs with reviews and CI checks so broken builds never reach production unnoticed.

Say this in the interview

  1. Define — one clear sentence (the short answer above).
  2. Example — relate it to a project like ShopNest or your real work.
  3. Trade-off — when you would not use it.
Permalink & share

Git & GitHub Developer Essentials · Version Control

Short answer: A merge where the branch being merged can simply be moved forward to the tip of the other branch without creating a new merge commit.

Real-world example (ShopNest)

Feature work for “UPI payment” lives on feature/upi-payment. Open a PR to main; resolve conflicts before merge.

Say this in the interview

  1. Define — one clear sentence (the short answer above).
  2. Example — relate it to a project like ShopNest or your real work.
  3. Trade-off — when you would not use it.
Permalink & share

Git & GitHub Developer Essentials · Version Control

Short answer: simply be moved forward to the tip of the other branch without creating a new merge commit.

Real-world example (ShopNest)

Feature work for “UPI payment” lives on feature/upi-payment. Open a PR to main; resolve conflicts before merge.

Say this in the interview

  1. Define — one clear sentence (the short answer above).
  2. Example — relate it to a project like ShopNest or your real work.
  3. Trade-off — when you would not use it.
Permalink & share

Git & GitHub Developer Essentials · Version Control

Short answer: common ancestor to determine how to combine changes, potentially creating a new merge commit. Long Answers:

Real-world example (ShopNest)

Feature work for “UPI payment” lives on feature/upi-payment. Open a PR to main; resolve conflicts before merge.

Say this in the interview

  1. Define — one clear sentence (the short answer above).
  2. Example — relate it to a project like ShopNest or your real work.
  3. Trade-off — when you would not use it.
Permalink & share

Git & GitHub Developer Essentials · Version Control

Short answer: A merge that involves the two branch tips and their common ancestor to determine how to combine changes, potentially creating a new merge commit. Long Answers:

Real-world example (ShopNest)

Feature work for “UPI payment” lives on feature/upi-payment. Open a PR to main; resolve conflicts before merge.

Say this in the interview

  1. Define — one clear sentence (the short answer above).
  2. Example — relate it to a project like ShopNest or your real work.
  3. Trade-off — when you would not use it.
Permalink & share
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