Questões de Concurso Comentadas para amazul

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Q1393637 Arquitetura de Computadores
Quando um controlador DMA solicita uma transferência de palavra e a CPU também necessita usar o barramento, mas o controlador consegue o comando do barramento utilizando um dos ciclos de barramento da CPU, tem-se um mecanismo conhecido como
Alternativas
Q1393636 Redes de Computadores
Os roteadores utilizam algoritmos para determinar as melhores rotas para os pacotes de dados em uma rede. Assinale a alternativa que apresenta o algoritmo que necessita de conhecimento completo da rede (todas as rotas da rede e suas características).
Alternativas
Q1393635 Arquitetura de Computadores
O endereçamento de instruções em um processador pode ocorrer de diversos modos. Em um desses modos, a instrução contém o endereço de memória em que se encontra o operando necessário para o processamento. É correto afirmar que esse modo de endereçamento é conhecido como modo
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Q1393634 Arquitetura de Software
Trata-se do modelo de arquitetura com objetivo de melhorar eficiência, agilidade e produtividade da empresa, que coloca os serviços como solução para o suporte aos objetivos estratégicos associados à computação orientada a serviços. É correto afirmar que a descrição refere-se a(à)
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Q1393633 Algoritmos e Estrutura de Dados

Sobre estruturas de dados do tipo árvore binária, analise as assertivas abaixo.


I. Diferente das listas simplesmente encadeadas, as árvores binárias permitem que cada nó tenha dois nós sucessores (filhos).

II. Raiz (root) é o nó mais inferior da árvore binária que não possui sucessores (filhos).

III. Folha (leaf) é qualquer nó da árvore binária que não tenha sucessores (filhos).


É correto o que se afirma em

Alternativas
Q1393632 Redes de Computadores
O protocolo SMTP (Simple Mail Transfer Protocol) é utilizado durante a troca de mensagens de e-mails. Sobre esse protocolo, é correto afirmar que é utilizado
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Q1393628 Engenharia de Software
Sobre os conceitos de verificação e validação, no contexto dos testes de software, analise as assertivas abaixo.

I. Verificação procura garantir a implementação correta de uma função específica no software testado.
II. Validação procura garantir que o software atenda aos requisitos do cliente. III. Quando um software é aprovado nos testes de verificação, automaticamente ele está aprovado em relação aos testes de validação.

É correto o que se afirma em
Alternativas
Q1393627 Sistemas Operacionais
Considerando o processo de paginação por parte do sistema operacional e levando em consideração que o tamanho da moldura da página (page frame) é de 16 bits, assinale a alternativa que apresenta a faixa de endereços da memória física correspondente à moldura de página de número 2.  
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Q1393626 Redes de Computadores

Observe o seguinte endereço:

IPv4: 128.6.5.7.

Sabendo que esse endereço é da Classe B, é correto afirmar que o valor

Alternativas
Q1393625 Engenharia de Software
O Teste Fumaça (Smoke Test) é uma abordagem do Teste de
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Q1393624 Sistemas Operacionais
Quando um processo não pode mais ser executado pelo processador, o sistema operacional deve trocar, na memória principal, esse processo por outro que deve ser executado. Assinale a alternativa que apresenta o nome desse processo.
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Q1393623 Redes de Computadores
Assinale a alternativa que apresenta a camada do modelo ISO/OSI que oferece como função a detecção e correção de erros.
Alternativas
Q1393622 Redes de Computadores
Assinale a alternativa que apresenta o protocolo da arquitetura TCP/IP que envia todos os seus pacotes, acreditando que eles vão chegar ao seu destino sem qualquer problema e na sequência desejada.
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Q1393621 Arquitetura de Computadores
Assinale a alternativa que apresenta o resultado da soma dos seguintes números abaixo (representados na forma hexadecimal):
67H e 14H
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Q1384735 Inglês

NASA’s Nuclear Frontier: The Plum Brook Reactor Facility


    There are three main types of nuclear reactors: power, research, and test. Research and test reactors as scientific tools are more common than most people realize. While power reactors frequently appear in newspaper headlines and are conspicuous because of their size and power, research reactors can be quietly tucked away, even in the midst of a college campus. Power reactors generate heat, which can easily be converted to other useable forms of energy, such as electricity. Research reactors operate at very low thermal power levels – so low, in fact, that they do not even require any type of forced cooling. They are used to measure nuclear parameters and other characteristics, which can then be used to build other reactors or to design experiments for test reactors. Test reactors are more powerful than research reactors and are able to produce much more intense radiation fields. Though they are still much less powerful than the power reactors, they generate enough heat to require a closed-loop forced-circulation coolant system. This system will remove the heat from the reactor by transferring it to a secondary cooling system, which releases it into the atmosphere through cooling towers.

NASA’s Nuclear Frontier: The Plum Brook Reactor Facility. Pages 36 to 40. 

Read the sentence below taken from the text.


Though they are still much less powerful than the power reactors, they generate enough heat to require a closed-loop forced-circulation coolant system.”


Choose the alternative that presents a word or expression that can susbtitute the bold and underlined one above, considering the context and without changing meaning.

Alternativas
Q1384734 Inglês

NASA’s Nuclear Frontier: The Plum Brook Reactor Facility


    There are three main types of nuclear reactors: power, research, and test. Research and test reactors as scientific tools are more common than most people realize. While power reactors frequently appear in newspaper headlines and are conspicuous because of their size and power, research reactors can be quietly tucked away, even in the midst of a college campus. Power reactors generate heat, which can easily be converted to other useable forms of energy, such as electricity. Research reactors operate at very low thermal power levels – so low, in fact, that they do not even require any type of forced cooling. They are used to measure nuclear parameters and other characteristics, which can then be used to build other reactors or to design experiments for test reactors. Test reactors are more powerful than research reactors and are able to produce much more intense radiation fields. Though they are still much less powerful than the power reactors, they generate enough heat to require a closed-loop forced-circulation coolant system. This system will remove the heat from the reactor by transferring it to a secondary cooling system, which releases it into the atmosphere through cooling towers.

NASA’s Nuclear Frontier: The Plum Brook Reactor Facility. Pages 36 to 40. 

Consider the words in bold and underlined in the following excerpts taken from the text.


I. “[...] power reactors frequently appear in newspaper headlines [...]”

II. “[...] research reactors can be quietly tucked away [...]”

III. “[...] which can easily be converted to other useable forms of energy [...]”


Choose the alternative in which the words in bold and underlined have the same grammar classification as the ones above. 

Alternativas
Q1384733 Inglês

NASA’s Nuclear Frontier: The Plum Brook Reactor Facility


    There are three main types of nuclear reactors: power, research, and test. Research and test reactors as scientific tools are more common than most people realize. While power reactors frequently appear in newspaper headlines and are conspicuous because of their size and power, research reactors can be quietly tucked away, even in the midst of a college campus. Power reactors generate heat, which can easily be converted to other useable forms of energy, such as electricity. Research reactors operate at very low thermal power levels – so low, in fact, that they do not even require any type of forced cooling. They are used to measure nuclear parameters and other characteristics, which can then be used to build other reactors or to design experiments for test reactors. Test reactors are more powerful than research reactors and are able to produce much more intense radiation fields. Though they are still much less powerful than the power reactors, they generate enough heat to require a closed-loop forced-circulation coolant system. This system will remove the heat from the reactor by transferring it to a secondary cooling system, which releases it into the atmosphere through cooling towers.

NASA’s Nuclear Frontier: The Plum Brook Reactor Facility. Pages 36 to 40. 

According to the text, the purpose of the closed-loop forced-circulation coolant system is to
Alternativas
Q1384732 Inglês

NASA’s Nuclear Frontier: The Plum Brook Reactor Facility


    There are three main types of nuclear reactors: power, research, and test. Research and test reactors as scientific tools are more common than most people realize. While power reactors frequently appear in newspaper headlines and are conspicuous because of their size and power, research reactors can be quietly tucked away, even in the midst of a college campus. Power reactors generate heat, which can easily be converted to other useable forms of energy, such as electricity. Research reactors operate at very low thermal power levels – so low, in fact, that they do not even require any type of forced cooling. They are used to measure nuclear parameters and other characteristics, which can then be used to build other reactors or to design experiments for test reactors. Test reactors are more powerful than research reactors and are able to produce much more intense radiation fields. Though they are still much less powerful than the power reactors, they generate enough heat to require a closed-loop forced-circulation coolant system. This system will remove the heat from the reactor by transferring it to a secondary cooling system, which releases it into the atmosphere through cooling towers.

NASA’s Nuclear Frontier: The Plum Brook Reactor Facility. Pages 36 to 40. 

According to the text, analyse the assertions below.


I. Power reactors are bigger than research reactors.

II. Research reactors generate more heat than power reactors.

III. Power reactors are more powerful than test or research reactors.


The correct assertion(s) is(are)

Alternativas
Q1384731 Inglês

NASA’s Nuclear Frontier: The Plum Brook Reactor Facility


    There are three main types of nuclear reactors: power, research, and test. Research and test reactors as scientific tools are more common than most people realize. While power reactors frequently appear in newspaper headlines and are conspicuous because of their size and power, research reactors can be quietly tucked away, even in the midst of a college campus. Power reactors generate heat, which can easily be converted to other useable forms of energy, such as electricity. Research reactors operate at very low thermal power levels – so low, in fact, that they do not even require any type of forced cooling. They are used to measure nuclear parameters and other characteristics, which can then be used to build other reactors or to design experiments for test reactors. Test reactors are more powerful than research reactors and are able to produce much more intense radiation fields. Though they are still much less powerful than the power reactors, they generate enough heat to require a closed-loop forced-circulation coolant system. This system will remove the heat from the reactor by transferring it to a secondary cooling system, which releases it into the atmosphere through cooling towers.

NASA’s Nuclear Frontier: The Plum Brook Reactor Facility. Pages 36 to 40. 

Consider the sentence below taken from the text.


  “Power reactors generate heat, which can easily be converted to other useable forms of energy, such as electricity.”


It is correct to affirm that the word in bold and underlined above refers to  

Alternativas
Q1384727 Matemática

A soma dos ângulos internos de um triângulo qualquer é igual a 180°. Observe os ângulos internos do triângulo dados na figura abaixo.


Imagem associada para resolução da questão


Diante do exposto, assinale a alternativa que apresenta o valor de x.

Alternativas
Respostas
41: E
42: A
43: E
44: C
45: E
46: B
47: C
48: E
49: B
50: D
51: E
52: A
53: C
54: A
55: D
56: C
57: A
58: E
59: A
60: A