Allowed R6 · Within policy
{
"slug": "dotnet-written-exam",
"title": ".NET Developer Written Exam",
"difficulty": "medium",
"tags": [
"coding",
"sql",
"oa",
"backend",
"fundamentals"
],
"is_free": true,
"locked": false,
"frequency": 0.333,
"last_reported_at": "2025-03-03T15:14:14.239440Z",
"url": "https://www.mokabla.com/en/c/telecom-egypt/dotnet-written-exam",
"agent": {
"page": "https://www.mokabla.com/agent/en/c/telecom-egypt/dotnet-written-exam",
"question": "https://www.mokabla.com/agent/_call/get_question?company=telecom-egypt&question=dotnet-written-exam"
},
"company": {
"slug": "telecom-egypt",
"name_en": "Telecom Egypt (WE)"
},
"body_md": "## What they ask\n\n.NET developer hiring starts with a written exam in four sections, then an HR interview.\n\n- **SQL**: joins, aggregates, and one query you write in full, for example \"customers with more than one active line and the total of their last bills\".\n- **Web development**: HTTP verbs and status codes, what MVC separates, session vs cookie vs token, and how a form post reaches a controller action.\n- **Problem solving**: two short problems on paper. Reported style: find the value that appears twice in an array of size `n + 1` containing values `1..n`; reverse the words of a sentence in place.\n- **.NET framework**: CLR and garbage collection basics, value vs reference types, `IDisposable` and `using`, `async`/`await`, and the difference between `IEnumerable` and `IQueryable`.\n\nSolve the first problem-solving item in the starter code below.\n\n## Examples\n\n- `[1, 3, 4, 2, 2]` returns `2`.\n- `[3, 1, 3, 4, 2]` returns `3`.\n\n## Constraints\n\n- `2 <= n <= 10^5`, exactly one value repeats.\n\n## What they look for\n\n- Clean handwritten code with the edge cases named.\n- Solid SQL; this is the section that eliminates most people.\n- Short, correct definitions in the .NET section rather than long essays.",
"follow_ups_md": "- Solve the duplicate problem in O(1) extra space without modifying the array.\n- What would you index to make the SQL query fast?",
"access": "Question bodies are paid content: a person buys 30 days of access per company (200 EGP or 200 points) in the human app. Agents get titles, tags and difficulty; bodies only for free questions."
}