Instruct: Classify a given review into positive or negative sentiment.
Query: Impressed in Glasgow

I bought Mastering Windows NT Server as comprehensive reference for troubleshooting & aid to full knowledge & understanding that underpin exam success in the MCSE program. It is outstanding & merits my 5-star rating for the above purposes because, as someone who has taught about computing for 15 years, I have NEVER come across another work which combined readability with such a high technical level and such comprehensive treatment. Since reading it I have passed the MCSE exams in NT Server, NT Workstation and Networking Essentials.