the mooc course I am learning / have studied (keep updated)

MOOC is really a revolution to IT engineers. It provides us a keep-learning way and makes our knowledge base more wider and updated.

I did some course from 2013 but I began to record them from Feb 2014.

here is the MOOC list I am learning.


here is the list I have attended and finished.

• Introduction to Google Tools (Udemy)- very small free course
• TCP, HTTP and SPDY Deep Dive(Udemy)- very small free course

My Next 6 month study path - way to a Full Stack Engineer

There is a very popular idea called full stack engineer(FSE).  FSE means a engineer understand the whole development stack in the web/Internet environment. It would be difficult to be an FSE as it will take very long time, great effort and a good Devops environment.

I won’t be able to become an FSE in recent years but I believe DevOps will be the furture of System admin which means you have to understand lots of IT area and know how to devolop system.

I will work on the below area in the next 6 months. Then let’s see how it goes.(20 hours per week)

1） Linux admin/Internal

2)    BASH programming

3)    Python programing

4)  Network infrastructure

5)  TCP/IP stack and application protocol

6)  Web System infrastructure

7)    Web Framework (SSH/Django)

I will write about 100 blogs to cover the above sections. Bye the end of July. I hope I can have a solid knowledge about the above areas.

The next 6 month after July will be focusing on Web development, from backend to frontend and mobile side but will check the result about the first 6 months.

techical interview malicious questions

ftp passive/active:
ftp binary/ascii:
how DNS works
DNS which port, TCP vs UDP:
Primary DNS, secondary DNS, cached DNS:
Explain what is ARP
Reserverd IP:
What is DMZ:
TCP handshake/ bye process:
How to work on an incident like the websites are reporting slowness:
What’s happens when you type http://www.google.com in your browser

Welcome to my blog

Hi Welcome to my technical blog,

This blog will be technical related. The topic will cover my interested areas such as Linux, Web technology, Java, Python, Network, Database and so on. Other area I am interested in such as Hadoop , AI and DataMining will be in another blog http://hadoopau.blogspot.com.au/.

My background.
I got the Bachelor and Master degree in China then worked for a leading Chinese Travel IT solution Travelsky for about 6 years, there I became a technical leader /End Technical Escalation point for - Open Message Switching System (OMSE) - the core message routing product used in Travelsky's production system. (200,000 max concurrent users and 3000 TPS). I was awarded as the key engineer in a Frist Prize of National Innovation Project of Civil Aviation Administration of China(CAAC),2009, (project 5 and Engineer 12) due to my exceptional contributions to OMSE and Travelsky.

I came to Sydney in 2010 and am working for Fujitsu Australia Limit since 2011. In this role, my main task is support one of Fujitsu's core client's web environment(Web Infrastructure, web server, application servers and OS). I became interested in the Web and Internet Area.

My Career Goal.
I hope I can become an leading Internet Engineer.I absolutely understand Internet is different with traditional IT environment. It is much more complicated, fast-developing. It is the most important technology in the last few decades which changes people's life for ever! That's why I want to work for it for my life time.

I will keep posting blogs with about 2 or 3 posts per week.

Thanks for supporting.
Rafa XU