Sunday, April 22, 2007

testing interview questions

How do you test an office stapler!!
How do you debug a broken stapler!!

Bring a stapler to the in-person interview and have the candidate provide test cases. No one approach/answer is correct. Look for thought process. First make sure the candidate understands an office stapler and it's general features (or else it might not be productive discussion).

What skills are required for your position

Flexible
Networking protocol
Qwik to learn
absorb
Not Afraid
Solid BackGround
Solid team work
cross team communication

network computing -> enterprise computing

In the 90s and 2000s, there is so much dependency on networking that it has churned out lots of skilled professionals in this domain. These professional move in to other similar domains and reuse nomenclatures used in the networking domains. Example: the enterprise security companies seems to have significant influence from networking. Or, may be the networking brought in lots of hassles along with it's benefits. So, the networking experts recognized the trouble and started working on it's solutions. Borrowed word
PM: Performance Management (monitoring)
FM: Fault Management

prs - Performance, Reliability & Scalability

Looks like companies are recognizing the need to do the right thing to get more reliable juice on the existing hardware/software. Business community has started putting money where the mouth is. Check out the trend in job req in early Jan 2007 for these terminologies and yo will notice that there are job titles with one or more of these words in both Dev and QA organizations. Also, some of the big troubles bubbling up most likely due to these factors - read RIM service down or Intuit servers going down during it's peak load.

Saturday, April 07, 2007

IP aliasing

IP aliasing is the process of adding more than one IP address to a network interface. With this, one node on a network can have multiple connections to a network, each serving a different purpose.

howto
/sbin/ifconfig eth0 up
/sbin/ifconfig eth0 172.16.3.1
/sbin/ifconfig eth0:0 172.16.3.10
/sbin/ifconfig eth0:1 172.16.3.100

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