Thursday, October 6, 2011

Its about square : side and diagonal of a square are different

side of a square : a
diagonal of a square : a* sqrt(2)

There are two circles, one circle is inscribed and another circle is circumscribed over a square. What is the ratio of area of inner to outer
circle?
Ans: 1 : 2

Monday, May 23, 2011

Cloud computing risks 'overlooked' by procurement

IT procurement or sourcing managers are often "overlooking" key risks when evaluating cloud computing contracts, experts have warned.

According to Gartner, the cloud delivery model includes risks that are often unclear or overlooked when assessing the appropriateness of the sourcing model.

"Cloud solutions often appear to have lower initial and switching costs than traditional solutions, but include hidden costs and risks, and require unique terms for contract protection, compared to traditional arrangements," said Alexa Bona, research vice president at Gartner.

"Many cloud providers appear reluctant to negotiate contracts, as the premise of their core model is a highly leveraged approach. The starting point contractually often favours the vendor, resulting in a potential misalignment with user requirements."

Bona added, that when assessing cloud offerings, procurement and sourcing executives need to understand what can be negotiated relative to risk elements, what they need to pressure cloud providers to offer, and what will likely not be negotiated.

"Cloud markets are generally still very competitive, and it is important for sourcing and procurement executives to leverage competition to optimise negotiations. They should be prepared to walk away from deals, if some of the risk elements are not satisfactorily addressed," said Frank Ridder, research vice president at Gartner.

"As this computing model is relatively nascent, we believe that, over time, the combination of buyer pressure, and a provider desire to reduce the length of negotiation cycles and number of customised deals will mean that some terms will evolve to more of a middle ground, rather than the current contract practices, which are mostly provider-centric."