Questões de Concurso
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Windows
By ScottGilbertsonNovember 19, 2008
Microsoft plans to offer Windows users a new antivirus
package designed to protect the OS from viruses, spyware,
rootkits and trojans. The new software is tentatively code-
named Morro, and will be available for free to Windows XP,
Vista and 7 users sometime in the second half of 2009.
The new software will reportedly use very minimal resources,
which means it should work well with older PCs. If fact,
Microsoft says Morro has been specially designed for older
PCs and low-spec machines popular in developing nations. In
addition to its minimal processor demands, Morro has been
developed to use very little bandwidth,making it ideal for those
without broadband connections.
Morro will replace Microsoft's current, paid service, Windows
Live OneCare, which has been available on a subscription
basis for $50 per year.
While a free, antivirus solution that ships withWindows would
be a boon for the average user, it could also mean trouble for
third-party software solutions. Given that a bundled solution
could raise antitrust concerns -and would no doubt see
competitors likeMcAfee and Grisoft reaching for the lawyers-
Microsoftwill be offeringMorro as a separate download.
Assuming Morro can deliver decent security it should be a
welcome free addition to Windows, but we don't suggest
throwing away your third-party software just yet. Antivirus
software suites will likely continue to hold an edge over Morro
by offering additional handy tools - like passwordmanagers,
identity theft protection and browser-based phishing
protection.
Still, if you've been runningWindowswith no antivirus software
at all,Morrowill no doubt be better than nothing, and it's hard to
arguewith free.
By Brian X. Chen, August 28, 2008
Just as small, fast-moving mammals replaced lumbering
dinosaurs, pocketable gadgets are evolving to fill niches that
larger, deskbound computers can't reach. But as they shrink,
these gadgets are faced with problems mammals face, too,
such as efficiently dissipating heat.
The recent example of Apple's first-generation iPod nanos
causing fires in Japan raises the question of whether
increasingly innovative product designs are impinging on
safety. The nano incident illustrates how risk can increase as
devices decrease in size, says Roger Kay, an analyst at
EndpointTechnologies.
"As [gadgets] get smaller, the tradeoffs become more difficult,
the balance becomes more critical and there's less room for
error," Kay said. "I'm not surprised it's happening to the nano
because that's the small one. You're asking it to do a lot in a
very, very small package and that's pushing the envelope.”
There's no question that industrial designers' jobs have
become much more difficult as the industry demands ever
more powerful and smaller gadgets. With paper-thin
subnotebooks, ultrasmall MP3 players, and pinkie finger-
sized Bluetooth headsets becoming increasingly popular, it's
questionable where exactly designers draw the line between
innovation and safety.
TEXT I
Beware the power of the blog
Companies may not like blogs, but if they ignore them
they may be inviting some PR disasters
The number of blogs on the internet is doubling every five
months, according to blog-tracking site Technorati. The total is
now around 20 million, with around 1.3 million posts made each
day. Most are no more interesting than overhearing another
person's telephone call, but there are exceptions that can have a
remarkable impact.
(from http://www.computing.co.uk/itweek/comment/ 2145491/beware-power-blog, retrieved on September 24th, 2008)
reviews and inspections. A technical review requires substantial
preparation on the part of the presenters. Documents must be
published and distributed and presentation material organized and
made into slides or overheads. Practice sessions are conducted by
presenters with an audience of critics to prepare for the review.
The reviewers should read the material, attend the
presentations, and write reports. On large projects with many
reviews and walk-throughs involving many participants, a
substantial number of labor hours can be consumed analyzing
documents, attending meetings, and writing reports. For example,
a system design review for one module or unit can require 150
labor hours. When overlooked, this labor can result in a very
large error in resource and schedule estimation.
Many projects include risk assessment and risk
management as a key part of the planning process and expect the
plan to identify specific risk areas. The plan is expected to
quantify both probability of failure and consequences of failure
and to describe what will be done to contain development risk.
A. Behforooz and F. Hudson. Software engineering
fundamentals. Ed. Oxford (adapted).
Based on the text above, judge the following items.
is having an impact on the way people think about
datacenters. Companies around the world are
announcing ways to save energy and reduce costs by
5 buying new hardware and services. Yet, there is little
guidance on how you can take action to control energy
costs. In the past, electricity has been treated as an
overhead expense, like the cost of space. But with rising
power costs and issues regarding reliability, supply, and
10 capacity, electricity requires its own specific strategy.
Projects regarding performance optimization and
cost reduction are a part of everyday best practices in
nearly every area of business. So why not treat energy
cost in the same way?
15 As Information Technologies (IT) pros, many of us
make decisions about the configuration and setup of
servers, the specifications on the equipment our
organizations purchase, and the requirements for
datacenter upgrades and construction. We even provide
20 early design input during application development. When
it comes to these projects, we obviously have a golden
opportunity to be green and influence the energy
efficiency of any datacenter.
The first part of any strategy is to know your current
25 energy usage. You need to know where your energy is
used and by what specific equipment, as well as what
usage is efficient and what is wasteful in the datacenter.
Unfortunately, it's rare to find power-consumption
metering in place that can break down usage to a level
30 where people can see the results of their actions. Most
organizations typically only see a monthly power bill
that rolls up consumption into an overall bottom line.
This offers little incentive for saving energy since
individuals never see the impact of their decisions, and
35 there is no way for them to prove that their changes
have actually saved energy.
One of the first issues people confront when
considering a green datacenter initiative is whether they
have executive support. For the purpose of the article, I
40 am going to assume the answer is "not yet." Executive
support requires a serious commitment that provides
resources and budget for your initiative. And while there
is a lot of talk about green datacenters, the reality is
that there is still often a lack of serious support at the
45 executive level. If you did already have such executive
support, you would probably be running a green
datacenter right now.
Still, even assuming you are not getting the support
you need, there is a great deal you can do to push your
50 green datacenter initiative forward. So how do you
determine effective actions to take in achieving your
goals? Fortunately, energy efficiency is not a new
concept and there is a lot that IT pros can learn from
other industries. [.]
55 Anyway, for whichever direction you choose,
planning an energy efficiency program for your datacenter
will require collaboration across groups in IT. Until
recently, the typical approach to planning IT solutions
has been to ignore power costs early on during the design
60 phase, focusing on the hardware and software being
purchased, along with the labor and hosting costs of
the solution. When power is buried in the overhead cost
of running solutions in a datacenter, energy efficiency
is a low priority. Exposing the actual power being
65 consumed by solutions is the first critical step in changing
the behavior of your organization.
By Dave Ohara
TechNet Magazine, October 2007
The Top Ten Principles of Good Consumption
Consumption is one of life's great pleasures. Buying
things we desire, traveling to beautiful places, eating
delectable food: icing on the cake of life. But too often the
effects of our blissful consumption make for a sad story.
Giant cars exhaling dangerous exhaust, hog farms pumping
out harmful pollutants, toxic trash pestering poor
neighborhoods - none of this if there weren't something
to sell.
But there's no need to trade pleasure for guilt. With
thoughtfulness and commitment, consumption can be a force
for good. Through buying what we need, produced the way
we want, we can create the world we'd like to live in.
To that end and for the future, a Consumption Manifesto:
Principle One. Reduce, Reuse, Recycle. This brilliant triad
says it all. Reduce: Avoid buying what you don't need-
and when you do get that dishwasher/lawnmower/toilet,
spend the money up front for an efficient model. Re-use:
Buy used stuff, and wring the last drop of usefulness out of
most everything you own. Recycle: Do it, but know that
it's the last and least effective leg of the triad. (Ultimately,
recycling simply results in the manufacture of more things.)
Principle Two. Stay close to home. Work close to home
to shorten your commute; eat food grown nearby; support
local businesses; join local organizations. All of these will
improve the look, shape, smell, and feel of your community.
Principle Three. Internal combustion engines are polluting,
and their use should be minimized. Period.
Principle Four. Watch what you eat. Whenever possible,
avoid food grown with pesticides, in feedlots, or by
agribusiness. It's an easy way to use your dollars to vote
against the spread of toxins in our bodies, land, and water.
Principle Five. Private industries have very little incentive
to improve their environmental practices. Our consumption
choices must encourage and support good behavior; our
political choices must support government regulation.
Principle Six. Support thoughtful innovations in
manufacturing and production. Hint: Drilling for oil is no
longer an innovation.
Principle Seven. Prioritize. Think hardest when buying
large objects; don't drive yourself mad fretting over the small
ones. It's easy to be distracted by the paper bag puzzle,
but an energy-sucking refrigerator is much more worthy of
your attention. (Small electronics are an exception.)
Principle Eight. Vote. Political engagement enables the
spread of environmentally conscious policies. Without
public action, thoughtful individuals are swimming
upstream.
Principle Nine. Don't feel guilty. It only makes you sad.
Principle Ten. Enjoy what you have-the things that are
yours alone, and the things that belong to none of us. Both
are nice, but the latter are precious. Those things that we
cannot manufacture and should never own-water, air, birds,
trees-are the foundation of life's pleasures. Without them,
we're nothing. With us, there may be nothing left. It's our
choice.
Umbra Fisk, Grist Magazine.
Slightly adapted from: http://www.worldwatch.org/node/1470
Access on June 1, 2007.






