I received a cold contact email from an internal Microsoft recruiter. They set up a call to explain the position and determine my availability for follow-up interview portions.

I was then registered for a web-based, one-hour technical screen. The outcome of this screen determined which candidates they would bring onsite the following week for an on-site hiring event.

The technical screen consisted of three questions:

1. Merge and sort three integer arrays.
2. Compare version numbers, returning a negative number if versionA < versionB; 0 if versionA == VersionB; a positive number if versionA > versionB. Examples given for the format were (1.0.0.0, 1.0.0.1, 2010.1.0.0).
3. Identify bugs in the following implementation of a dictionary.

javascript function Dictionary() { var this.dictionary_ = {}; }

Dictionary.prototype.Add(word, definition) { this.dictionary_[word] = definition); }

Dictionary.prototype.WhatIs(word) { return this.dictionary_[word]; }