Questões de Concurso Comentadas para analista de tecnologia da informação - redes

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Q113291 Redes de Computadores
Os cabos são UTP--CAT5 normalmente utilizados em redes Ethernet. Dentre suas principais características, de acordo com as normas vigentes, pode-se destacar que são compostos de:
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Q113290 Redes de Computadores
Redes de computadores também podem ser classificadas de acordo com as distâncias físicas entre seus elementos ativos. Em ordem crescente de proximidade ou áreas de abrangência, são chamadas de:
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Q113289 Redes de Computadores
Aprincipal função do protocolo Spanning Tree é:
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Q113288 Redes de Computadores
As Redes Virtuais trabalham através de segmentação de domínios, reduzindo assim o congestionamento da rede. O uso de VLANs pode ser configurado para segmentar os recursos de uma rede departamental. Elas são definidas no padrão IEEE:

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Q113287 Redes de Computadores
Comparando-se os protocolos UDP e TCP, pode-se afirmar que:
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Q113286 Redes de Computadores
As arquiteturas de rede Ethernet, Token Ring , e FDDI, no modelo OSI, operam na(s) camada(s):
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Q113285 Redes de Computadores
Para um roteador IGP (que utilize os protocolos RIP ou OSPF) decidir por onde o datagrama recebido deverá seguir, ele pode se basear em umdos dois algoritmos abaixo:
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Q113284 Redes de Computadores
No modelo OSI, os protocolos UDP, PPP,SNMP, SSL e ICMP , operam, respectivamente, nas camadas:
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Q113283 Redes de Computadores
Sobre uma rede de computadores com topologia em anel, é correto afirmar que:
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Q113282 Redes de Computadores
A empresa ALPHA possui uma classe “C” para endereçamento de rede IP e usa como máscara o valor 255.255.255.224 , para definir suas sub-redes. A quantidade máxima de equipamentos que podem estar conectados a cada uma dessas sub-redes é de:

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Q113273 Conhecimentos Gerais
“Em1959, durante uma palestra no Instituto deTecnologia da Califórnia, o físico Richard Feynman sugeriu que, em um futuro não muito distante, os engenheiros poderiam pegar átomos e colocá-los onde bem entendessem, desde que, é claro, não fossem violadas as leis da natureza. Com isso, materiais com propriedades inteiramente novas, poderiam ser criados. Esta palestra, intitulada "Há muito espaço lá embaixo" é, hoje, tomada como o ponto inicial da nanotecnologia.”

(Disponível em: ) http://www.mct.gov.br/html/template/ frameSet.php?urlFrame=http://www.comciencia.br/reportagens/ nanotecnologia/nano10.htm&objMct=No%20Brasil


Sobre a nanotecnologia NÃOé correto afirmar que:


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Q113272 Conhecimentos Gerais
“Os alimentos transgênicos chegaram. E parece que vieram para ficar. Apesar da polêmica em torno de sua segurança para a saúde humana e do impacto dessas safras sobre o meio ambiente, plantações transgênicas já são feitas em16 países, cobrindo 60milhões de hectares, área cerca de seis vezesmaior que a de Portugal.”

( disponível em: Ciência hoje on-line http://ich.unito.com.br/878)

Plantas transgênicas são obtidas através:
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Q113271 Conhecimentos Gerais
“A Fiocruz (Fundação Oswaldo Cruz) anunciou ontem a conclusão do processo de nacionalização de um teste que permite detectar a presença do HIV em apenas 15 minutos.(...)
Com o teste agora nacionalizado, uma gota de sangue é suficiente para um diagnóstico 99% eficaz, revelado no local da coleta em um período de 10 a 15 minutos. No Brasil, o método já é difundido em maternidades, para evitar a transmissão de mãe para filho nos partos em que a gestante não foi submetida ao teste de HIV no pré-natal.”

(Jornal da Ciência, 02 de dezembro de 2008. Disponível em http://www.jornaldaciencia.org.br/Detalhe.jsp?id=60287)

A Aids é:
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Q112964 Inglês
Microsoft to Offer Free Virus Protection Software for
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.

If you don't read carfully this manual you ____ be able to learn how this gizmo works.
Alternativas
Q112963 Inglês
Microsoft to Offer Free Virus Protection Software for
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.

You ___ not believe that these possibilties are real, they're based ___ experiments that ___proved until now.
Alternativas
Q112962 Inglês
Microsoft to Offer Free Virus Protection Software for
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.

Choose the best option.

The lights went ___ twice when I was ___ the computer this morning, so I had to stop working ___ the project. Well, that'swhy I'mlate.
Alternativas
Q112957 Inglês
Microsoft to Offer Free Virus Protection Software for
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 being a free product, the new antivirus will certainly bring some trouble such as…
Alternativas
Q112946 Conhecimentos Gerais
“O assunto mais comentado da conferência do clima em Poznan atende pela sigla REDD.ARedução de Emissões por Desmatamento e Degradação é tema constante tanto nas negociações oficiais como nos eventos paralelos. Como proteger as florestas é a vertente que mais avançou nos últimos meses no debate internacional sobre mudanças climáticas.
A idéia dos países ricos e mais emissores é que é mais fácil e mais barato evitar o desmatamento nas nações comflorestas do que mudar o padrão energético, de transporte e consumo emseu próprio território. O desmatamento responde por 15% a 20%das emissões globais de gases-estufa.”

(Disponível em http://www.jornaldaciencia.org.br/Detalhe.jsp?id=60397)

Um gás que contribui para o aquecimento global, já que desempenha importante papel no efeito estufa, é o:
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Q894696 Direito Administrativo
Considerando a Lei nº 8112/1990 e suas alterações, assinale a alternativa correta.
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Respostas
704: D
705: B
706: C
707: E
708: A
709: E
710: C
711: D
712: A
713: B
714: B
715: E
716: B
717: B
718: C
719: E
720: C
721: A
722: C