Foram encontradas 80 questões.
1095771
Ano: 2012
Disciplina: TI - Organização e Arquitetura dos Computadores
Banca: UPENET/IAUPE
Orgão: EMPREL
Disciplina: TI - Organização e Arquitetura dos Computadores
Banca: UPENET/IAUPE
Orgão: EMPREL
Provas:
Marque a alternativa INCORRETA.
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Questão presente nas seguintes provas
- Read the text below and answer the questions.
The Five Generations of Computers
Each generation of computer is characterized by a major technological development that fundamentally changed the way computers operate, resulting in increasingly smaller, cheaper, more powerful and more efficient and reliable devices.
The history of computer development is often referred to in reference to the different generations of computing devices. Each generation of computer is characterized by a major technological development that fundamentally changed the way computers operate, resulting in increasingly smaller, cheaper, more powerful and more efficient and reliable devices. Read about each generation and the developments that led to the current devices that we use today.
First Generation (1940-1956) Vacuum Tubes
The first computers used vacuum tubes for circuitry and magnetic drums for memory, and were often enormous, taking up entire rooms. They were very expensive to operate and in addition to using a great deal of electricity, generated a lot of heat, which was often the cause of malfunctions.
First generation computers relied on machine language, the lowest-level programming language understood by computers, to perform operations, and they could only solve one problem at a time. Input was based on punched cards and paper tape, and output was displayed on printouts.
The UNIVAC and ENIAC computers are examples of first-generation computing devices. The UNIVAC was the first commercial computer delivered to a business client, the U.S. Census Bureau in 1951.
Second Generation (1956-1963) Transistors
Transistors replaced vacuum tubes and ushered in the second generation of computers. The transistor was invented in 1947 but did not see widespread use in computers until the late 1950s. The transistor was far superior to the vacuum tube, allowing computers to become smaller, faster, cheaper, more energy-efficient and more reliable than their firstgeneration predecessors. Though the transistor still generated a great deal of heat that subjected the computer to damage, it was a vast improvement over the vacuum tube. Second-generation computers still relied on punched cards for input and printouts for output.
Second-generation computers moved from cryptic binary machine language to symbolic, or assembly, languages, which allowed programmers to specify instructions in words. High-level programming languages were also being developed at this time, such as early versions of COBOL and FORTRAN. These were also the first computers that stored their instructions in their memory, which moved from a magnetic drum to magnetic core technology.The first computers of this generation were developed for the atomic energy industry.
Third Generation (1964-1971) Integrated Circuits
The development of the integrated circuit was the hallmark of the third generation of computers. Transistors were miniaturized and placed on silicon chips, called semiconductors, which drastically increased the speed and efficiency of computers.
Instead of punched cards and printouts, users interacted with third generation computers through keyboards and monitors and interfaced with an operating system, which allowed the device to run many different applications at one time with a central program that monitored the memory. Computers for the first time became accessible to a mass audience because they were smaller and cheaper than their predecessors.
Fourth Generation (1971-Present) Microprocessors
The microprocessor brought the fourth generation of computers, as thousands of integrated circuits were built onto a single silicon chip. What in the first generation filled an entire room could now fit in the palm of the hand. The Intel 4004 chip, developed in 1971, located all the components of the computer—from the central processing unit and memory to input/output controls—on a single chip.
In 1981 IBM introduced its first computer for the home user, and in 1984 Apple introduced the Macintosh. Microprocessors also moved out of the realm of desktop computers and into many areas of life as more and more everyday products began to use microprocessors.
As these small computers became more powerful, they could be linked together to form networks, which eventually led to the development of the Internet. Fourth generation computers also saw the development of GUIs, the mouse and handheld devices.
Fifth Generation (Present and Beyond) Artificial Intelligence
Fifth generation computing devices, based on artificial intelligence, are still in development, though there are some applications, such as voice recognition, that are being used today. The use of parallel processing and superconductors is helping to make artificial intelligence a reality. Quantum computation and molecular and nanotechnology will radically change the face of computers in years to come. The goal of fifth-generation computing is to develop devices that respond to natural language input and are capable of learning and self-organization.
http://www.webopedia.com/DidYouKnow/Hardware_Software/2002/FiveGenerations.asp (consultado em 11/04/12)
In the context of computer, what does Artificial Intelligence mean?
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Dentre os tipos de medidas de dados geográficos, NÃO podemos citar a escala
Provas
Questão presente nas seguintes provas
- Read the text below and answer the questions.
The Five Generations of Computers
Each generation of computer is characterized by a major technological development that fundamentally changed the way computers operate, resulting in increasingly smaller, cheaper, more powerful and more efficient and reliable devices.
The history of computer development is often referred to in reference to the different generations of computing devices. Each generation of computer is characterized by a major technological development that fundamentally changed the way computers operate, resulting in increasingly smaller, cheaper, more powerful and more efficient and reliable devices. Read about each generation and the developments that led to the current devices that we use today.
First Generation (1940-1956) Vacuum Tubes
The first computers used vacuum tubes for circuitry and magnetic drums for memory, and were often enormous, taking up entire rooms. They were very expensive to operate and in addition to using a great deal of electricity, generated a lot of heat, which was often the cause of malfunctions.
First generation computers relied on machine language, the lowest-level programming language understood by computers, to perform operations, and they could only solve one problem at a time. Input was based on punched cards and paper tape, and output was displayed on printouts.
The UNIVAC and ENIAC computers are examples of first-generation computing devices. The UNIVAC was the first commercial computer delivered to a business client, the U.S. Census Bureau in 1951.
Second Generation (1956-1963) Transistors
Transistors replaced vacuum tubes and ushered in the second generation of computers. The transistor was invented in 1947 but did not see widespread use in computers until the late 1950s. The transistor was far superior to the vacuum tube, allowing computers to become smaller, faster, cheaper, more energy-efficient and more reliable than their firstgeneration predecessors. Though the transistor still generated a great deal of heat that subjected the computer to damage, it was a vast improvement over the vacuum tube. Second-generation computers still relied on punched cards for input and printouts for output.
Second-generation computers moved from cryptic binary machine language to symbolic, or assembly, languages, which allowed programmers to specify instructions in words. High-level programming languages were also being developed at this time, such as early versions of COBOL and FORTRAN. These were also the first computers that stored their instructions in their memory, which moved from a magnetic drum to magnetic core technology.The first computers of this generation were developed for the atomic energy industry.
Third Generation (1964-1971) Integrated Circuits
The development of the integrated circuit was the hallmark of the third generation of computers. Transistors were miniaturized and placed on silicon chips, called semiconductors, which drastically increased the speed and efficiency of computers.
Instead of punched cards and printouts, users interacted with third generation computers through keyboards and monitors and interfaced with an operating system, which allowed the device to run many different applications at one time with a central program that monitored the memory. Computers for the first time became accessible to a mass audience because they were smaller and cheaper than their predecessors.
Fourth Generation (1971-Present) Microprocessors
The microprocessor brought the fourth generation of computers, as thousands of integrated circuits were built onto a single silicon chip. What in the first generation filled an entire room could now fit in the palm of the hand. The Intel 4004 chip, developed in 1971, located all the components of the computer—from the central processing unit and memory to input/output controls—on a single chip.
In 1981 IBM introduced its first computer for the home user, and in 1984 Apple introduced the Macintosh. Microprocessors also moved out of the realm of desktop computers and into many areas of life as more and more everyday products began to use microprocessors.
As these small computers became more powerful, they could be linked together to form networks, which eventually led to the development of the Internet. Fourth generation computers also saw the development of GUIs, the mouse and handheld devices.
Fifth Generation (Present and Beyond) Artificial Intelligence
Fifth generation computing devices, based on artificial intelligence, are still in development, though there are some applications, such as voice recognition, that are being used today. The use of parallel processing and superconductors is helping to make artificial intelligence a reality. Quantum computation and molecular and nanotechnology will radically change the face of computers in years to come. The goal of fifth-generation computing is to develop devices that respond to natural language input and are capable of learning and self-organization.
http://www.webopedia.com/DidYouKnow/Hardware_Software/2002/FiveGenerations.asp (consultado em 11/04/12)
Old vacuum tubes and ushered were substituted by
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Atualmente, a Internet vive um momento de transição do IPv4 para o IPv6 devido à escassez de endereços na primeira versão do protocolo. O ICMPv6 (Internet Control Message Protocol version 6) evoluiu do ICMPv4. Sobre as mensagens do ICMPv4, NÃO podemos afirmar que
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SECRETARIA DE FINANÇAS DO RECIFE Empresa Municipal de Informática - EMPREL
Histórico
A rede de história da EMPREL começou a ser tecida em 1963, quando a Prefeitura do Recife adquiriu seu primeiro computador, um modelo IBM 1401, para a antiga Divisão de Mecanização.
Em 9 de dezembro de 1969, uma lei municipal, finalmente institucionalizou a então Empresa Municipal de Processamento Eletrônico.
Em janeiro de 1970, no velho casarão 271 da rua da União, a EMPREL engatinhava no gerenciamento da arrecadação de tributos e na folha de pagamento do funcionalismo municipal.
Passados 26 anos da sua criação e hoje denominada de Empresa Municipal de Informática, a EMPREL dispõe de eficiente parque tecnológico, composto de redes de microcomputadores, Geoprocessamento, Multimídia e é provedor público de acesso à Internet.
Atuação
Rede de Cidadania para auxiliar o cidadão, uma rede de serviços foi desenvolvida, com pesquisas mensais de preços de produtos nos supermercados ou de produtos de época. Na educação, toda renovação de matrícula já é automática, e os alunos das escolas municipais aprendem informática.
Rede de Saúde
Desde o controle de campanhas de vacinação e epidemiológico até o gerenciamento dos postos de saúde comunitários, uma rede de sistemas cuida bem da saúde do Recife. O Projeto Cooperado de Saúde é outra atividade que vai ajudar a saúde pública de todo o país.
Rede Urbanística
Transportes urbanos, na manutenção e no acompanhamento das obras. Além, claro, de todo planejamento.
Rede de Gerenciamento
A arrecadação e a aplicação dos impostos também contam com eficiente rede de sistemas. Inclusive com autoatendimento.
Disponível em: www.recife.pe.gov.br/pr/sec.finanças/emprel.historico. Acesso em: 16.04.2012.
Atente para os termos sublinhados dos itens abaixo:
I. “A rede de história da EMPREL começou a ser tecida em 1963...” – acentua-se por ser paroxítono terminado em ditongo.
II. “...institucionalizou a então Empresa Municipal de Processamento Eletrônico.” – a sua tonicidade recai na penúltima sílaba.
III. “Na educação, toda renovação de matrícula já é automática...” – ambos se acentuam por serem proparoxítonos.
IV. “...até o gerenciamento dos postos de saúde comunitários...” – ambos se acentuam por serem proparoxítonos.
V. “...é outra atividade que vai ajudar a saúde pública de todo o país.” – os acentos se justificam, respectivamente, pelo fato de o u ser átono, formando ditongo, por se tratar de um proparoxítono e pelo fato de o i formar ditongo.
Está CORRETO o que se afirma em
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Electronic junk will create pollution problem around world, U.N. study warns
BALI, Indonesia — Sales of household electrical gadgets will boom across the developing world in the next decade, wreaking environmental havoc if there are no new strategies to deal with the discarded TVs, cell phones and computers, a U.N. report said today.
The environmental and health hazards posed by the globe's mounting electronic waste are particularly urgent in developing countries, which are already dumping grounds for rich nations' high-tech trash, the U.N. Environment Program study said.
Electronic waste is piling up around the world at a rate estimated at 40 million U.S. tons a year, the report said, noting that data remain insufficient.
China produces 2.6 million tons of electronic waste a year, second only to the United States with 3.3 million tons, it said.
UNEP Executive Director Achim Steiner said the globe was ill-prepared to deal with the explosion of electronic gadgets over the past decade.
"The world is now confronted with a massive wave of electronic waste that is going to come back and hit us, particularly for least-developed countries, that may become a dumping ground," Steiner told The Associated Press ahead of a UNEP executive meeting in Bali.
He said some Americans and Europeans have sent broken computers to African countries falsely declared as donations. The computers were dumped outside slums as toxic waste and became potential hazards to people, he said.
The report predicts that China's waste rate from old computers will quadruple from 2007 levels by 2020. Meanwhile, in India, waste from old refrigerators — which contain hazardous chlorofluorocarbons and hydrochlorofluorocarbon gases — could triple by 2020.
It said the fastest growth in electronic waste in recent years has been in communications devices such as cell phones, pagers and smart phones.
Most of the recycling of electronic waste in developing countries such as China and India is done by inefficient and unregulated backyard operators. The environmentally harmful practice of heating electronic circuit boards over coal-fired grills to leach out gold is widespread in both countries.
The report called for regulations for collecting and managing electronic waste, and urged that technologies be transferred to the industrializing world to cope with such waste.
While electrical products such refrigerators, air conditioners, printers, DVD players and digital music players account for only a small part of the world's garbage, their components make them particularly hazardous.
Prof. Eric Williams, an Arizona State University expert on industrial ecology who did not participate in the UNEP study, said it was difficult to comment on the credibility of the electronic waste growth forecasts because the report gives little explanation of how they were calculated.
"It is the environmental intensity of e-waste rather than its total mass that is the main concern," Williams told the AP via e-mail.
"If e-waste is recycled informally in the developing world, it causes far worse pollution than the much larger mass of regular waste in landfills," he said.
http://www.cleveland.com/world/index.ssf/2010/02/electronic_junk_will_create_po.html (06/06/12)
According to the text, electronic junk can cause pollution to the
Provas
Questão presente nas seguintes provas
1056472
Ano: 2012
Disciplina: TI - Desenvolvimento de Sistemas
Banca: UPENET/IAUPE
Orgão: EMPREL
Disciplina: TI - Desenvolvimento de Sistemas
Banca: UPENET/IAUPE
Orgão: EMPREL
Provas:
- Servidores de AplicaçãoJ2EE/Java EE
- Servidores de AplicaçãoGlassFish
- Servidores de AplicaçãoOracle WebLogic
Dentre os servidores de aplicação JAVA, NÃO podemos citar
Provas
Questão presente nas seguintes provas
1054620
Ano: 2012
Disciplina: TI - Desenvolvimento de Sistemas
Banca: UPENET/IAUPE
Orgão: EMPREL
Disciplina: TI - Desenvolvimento de Sistemas
Banca: UPENET/IAUPE
Orgão: EMPREL
Provas:
Quanto ao uso de Collections em Java, analise as afirmativas abaixo:
i. Ao utilizar objetos que implementam a interface Collection, é imprescindível conhecer a estrutura de dados interna, usada pelo objeto armazenado.
ii. As classes Vector e HashMap são "thread safe", ou seja, seus métodos são synchronized.
iii. A interface Iterator é utilizada para percorrer os objetos de uma coleção de uma forma mais fácil.
Somente está CORRETO o que se afirma em
Provas
Questão presente nas seguintes provas
- Read the text below and answer the questions.
The Five Generations of Computers
Each generation of computer is characterized by a major technological development that fundamentally changed the way computers operate, resulting in increasingly smaller, cheaper, more powerful and more efficient and reliable devices.
The history of computer development is often referred to in reference to the different generations of computing devices. Each generation of computer is characterized by a major technological development that fundamentally changed the way computers operate, resulting in increasingly smaller, cheaper, more powerful and more efficient and reliable devices. Read about each generation and the developments that led to the current devices that we use today.
First Generation (1940-1956) Vacuum Tubes
The first computers used vacuum tubes for circuitry and magnetic drums for memory, and were often enormous, taking up entire rooms. They were very expensive to operate and in addition to using a great deal of electricity, generated a lot of heat, which was often the cause of malfunctions.
First generation computers relied on machine language, the lowest-level programming language understood by computers, to perform operations, and they could only solve one problem at a time. Input was based on punched cards and paper tape, and output was displayed on printouts.
The UNIVAC and ENIAC computers are examples of first-generation computing devices. The UNIVAC was the first commercial computer delivered to a business client, the U.S. Census Bureau in 1951.
Second Generation (1956-1963) Transistors
Transistors replaced vacuum tubes and ushered in the second generation of computers. The transistor was invented in 1947 but did not see widespread use in computers until the late 1950s. The transistor was far superior to the vacuum tube, allowing computers to become smaller, faster, cheaper, more energy-efficient and more reliable than their firstgeneration predecessors. Though the transistor still generated a great deal of heat that subjected the computer to damage, it was a vast improvement over the vacuum tube. Second-generation computers still relied on punched cards for input and printouts for output.
Second-generation computers moved from cryptic binary machine language to symbolic, or assembly, languages, which allowed programmers to specify instructions in words. High-level programming languages were also being developed at this time, such as early versions of COBOL and FORTRAN. These were also the first computers that stored their instructions in their memory, which moved from a magnetic drum to magnetic core technology.The first computers of this generation were developed for the atomic energy industry.
Third Generation (1964-1971) Integrated Circuits
The development of the integrated circuit was the hallmark of the third generation of computers. Transistors were miniaturized and placed on silicon chips, called semiconductors, which drastically increased the speed and efficiency of computers.
Instead of punched cards and printouts, users interacted with third generation computers through keyboards and monitors and interfaced with an operating system, which allowed the device to run many different applications at one time with a central program that monitored the memory. Computers for the first time became accessible to a mass audience because they were smaller and cheaper than their predecessors.
Fourth Generation (1971-Present) Microprocessors
The microprocessor brought the fourth generation of computers, as thousands of integrated circuits were built onto a single silicon chip. What in the first generation filled an entire room could now fit in the palm of the hand. The Intel 4004 chip, developed in 1971, located all the components of the computer—from the central processing unit and memory to input/output controls—on a single chip.
In 1981 IBM introduced its first computer for the home user, and in 1984 Apple introduced the Macintosh. Microprocessors also moved out of the realm of desktop computers and into many areas of life as more and more everyday products began to use microprocessors.
As these small computers became more powerful, they could be linked together to form networks, which eventually led to the development of the Internet. Fourth generation computers also saw the development of GUIs, the mouse and handheld devices.
Fifth Generation (Present and Beyond) Artificial Intelligence
Fifth generation computing devices, based on artificial intelligence, are still in development, though there are some applications, such as voice recognition, that are being used today. The use of parallel processing and superconductors is helping to make artificial intelligence a reality. Quantum computation and molecular and nanotechnology will radically change the face of computers in years to come. The goal of fifth-generation computing is to develop devices that respond to natural language input and are capable of learning and self-organization.
http://www.webopedia.com/DidYouKnow/Hardware_Software/2002/FiveGenerations.asp (consultado em 11/04/12)
Why did computer become accessible? Because
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Cadernos
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