Questões de Concurso Sobre inglês

Foram encontradas 25.682 questões

Ano: 2013 Banca: FUNCAB Órgão: SEPOG - RO
Q1228027 Inglês
Choose the correct verb form that completes the sentence below.          If the teenagers ________________ (not , drink) so much beer last night, they wouldn't have had an accident.
Alternativas
Ano: 2013 Banca: FEPESE Órgão: EPAGRI
Q1227170 Inglês
Thinking the unthinkable
Today, it seems that no one is uninformed about the environment. Every day the media shows us more evidence of climate change: extreme weather, melting ice-caps, and rising seas. Most of us believe we can do something to prevent global disaster, such as recycling, or conserving energy. It’s strange to recall that, before the 1960s, few people knew of the damagewe were doing to the planet. However, one scientist had already realized the dangers ahead. And today, this same man believes it may be too late to save the world. In the 1960s, Professor James Lovelock came up with one of the most famous theories on the environment – the GAIA hypothesis. According to this hypothesis, the earth’s atmosphere, soil, and oceans work in concert to provide an inhabitable environment for humans. If we disrupt these elements too severely, the earth may one day become uninhabitable. In the decade before he developed the Gaia hypothesis, Lovelock had created a device to detect atmospheric chemicals. With this device, he discovered particular chemicals, called CFCs. Later, other scientists discovered that these CFCs had damaged the earth’s ozone layer. Before then, we hadn’t knows about the hole in the ozone layer. By 1979, Lovelock had put forward his theories on the environment, in his first book. At that time, few people believe him. Before scientists such as Lovelock publicized environmental issues, the environment hadn’t been a very fashionable topic. In 2004, after many people had only just started to accept the reality of global warming, Lovelock became convinced that climate change was irreversible. In 2006, he wrote another book describing his latest ideas. In 40 years, Lovelock believes large parts of the world will be desert. We will need to make synthesized food to feed the world’s population. ‘Is Lovelock right this time too? Surely we can prevent this nightmare, if we all recycle, use renewable energy, and travel less by plane and car? Lovelock disagrees. According to him, it is now impossible to reverse global warming. We did not act quickly enough when we had the chance. Renewable energy and recycling are a case of too little, too late. Ultimately, if the human race is to survive, Lovelock believes we need to use more technology, not less. In his view, only nuclear energy can provide sufficient power for the planet. Now over 90 years old, Lovelock may not live to find out if he is right. But we will...
Choose the alternative which presents the correct definitions. They are underlined in the text.
Alternativas
Ano: 2013 Banca: CESPE / CEBRASPE Órgão: STF
Q1226724 Inglês
Types of operating systems
Real-time
A real-time operating system is a multitasking operating system that aims at executing real-time applications. Real-time operating systems often use specialized scheduling algorithms so that they can achieve a deterministic nature of behavior. The main objective of real-time operating systems is their quick and predictable response to events. They have an event-driven or time-sharing design and often aspects of both. An event-driven system switches between tasks based on their priorities or external events while time-sharing operating systems switch tasks based on clock interrupts.
Multi-user
A multi-user operating system allows multiple users to access a computer system at the same time. Time-sharing systems and Internet servers can be classified as multi-user systems as they enable multiple-user access to a computer through the sharing of time. Single-user operating systems have only one user but may allow multiple programs to run at the same time.
Multi-tasking vs. single-tasking
A multi-tasking operating system allows more than one program to be running at the same time, from the point of view of human time scales. A single-tasking system has only one running program. Multi-tasking can be of two types: pre-emptive and co-operative. In pre-emptive multitasking, the operating system slices the CPU time and dedicates one slot to each of the programs. Unix-like operating systems such as Solaris and Linux support pre-emptive multitasking, as does AmigaOS. Cooperative multitasking is achieved by relying on each process to give time to the other processes in a defined manner. 16-bit versions of Microsoft Windows used cooperative multi-tasking. 32-bit versions of both Windows NT and Win9x, used pre-emptive multi-tasking. Mac OS prior to OS X used to support cooperative multitasking.
Distributed
A distributed operating system manages a group of independent computers and makes them appear to be a single computer. The development of networked computers that could be linked and communicate with each other gave rise to distributed computing. Distributed computations are carried out on more than one machine. When computers in a group work in cooperation, they make a distributed system.
Embedded
Embedded operating systems are designed to be used in embedded computer systems. They are designed to operate on small machines like PDAs with less autonomy. They are able to operate with a limited number of resources. They are very compact and extremely efficient by design. Windows CE and Minix 3 are some examples of embedded operating systems.
Based on the text above, judge the following item.
Since the first release of Windows NT, no version of Windows used cooperative multi-tasking.
Alternativas
Ano: 2013 Banca: FEPESE Órgão: EPAGRI
Q1224886 Inglês
Thinking the unthinkable

Today, it seems that no one is uninformed about the environment. Every day the media shows us more evidence of climate change: extreme weather, melting ice-caps, and rising seas. Most of us believe we can do something to prevent global disaster, such as recycling, or conserving energy. It’s strange to recall that, before the 1960s, few people knew of the damagewe were doing to the planet. However, one scientist had already realized the dangers ahead. And today, this same man believes it may be too late to save the world. In the 1960s, Professor James Lovelock came up with one of the most famous theories on the environment – the GAIA hypothesis. According to this hypothesis, the earth’s atmosphere, soil, and oceans work in concert to provide an inhabitable environment for humans. If we disrupt these elements too severely, the earth may one day become uninhabitable. In the decade before he developed the Gaia hypothesis, Lovelock had created a device to detect atmospheric chemicals. With this device, he discovered particular chemicals, called CFCs. Later, other scientists discovered that these CFCs had damaged the earth’s ozone layer. Before then, we hadn’t knows about the hole in the ozone layer. By 1979, Lovelock had put forward his theories on the environment, in his first book. At that time, few people believe him. Before scientists such as Lovelock publicized environmental issues, the environment hadn’t been a very fashionable topic. In 2004, after many people had only just started to accept the reality of global warming, Lovelock became convinced that climate change was irreversible. In 2006, he wrote another book describing his latest ideas. In 40 years, Lovelock believes large parts of the world will be desert. We will need to make synthesized food to feed the world’s population. ‘Is Lovelock right this time too? Surely we can prevent this nightmare, if we all recycle, use renewable energy, and travel less by plane and car? Lovelock disagrees. According to him, it is now impossible to reverse global warming. We did not act quickly enough when we had the chance. Renewable energy and recycling are a case of too little, too late. Ultimately, if the human race is to survive, Lovelock believes we need to use more technology, not less. In his view, only nuclear energy can provide sufficient power for the planet. Now over 90 years old, Lovelock may not live to find out if he is right. But we will...

About Professor James Lovelock, it is correct to state that:
Alternativas
Ano: 2013 Banca: ESAF Órgão: MF
Q1223800 Inglês
Why Some State Immigration Laws are Welcoming but Others are Downright Hostile 1. Immigration policy reform has become a topic of almost daily national debate. Businesses, consumers, employers, labor unions, law enforcement offi cers, higher education offi cials, and not to mention immigrants themselves, all have something at stake in immigration policy reform. All of the recent discussion of immigration policy at the national level makes it easy to forget that signifi cant changes have already been made in immigration policy at the state level, many of which will likely affect the policy discourse and the nature of any policy changes at the national level. As the nation considers how to move forward with immigration policy reform, we should fi rst understand how we got to this point. What has shaped immigration policy changes at the state level in the last decade? 2. Using an analysis of all 50 states, James Monogan, a political scientist at the University of Georgia, fi nds that immigration policy is affected most by legislative professionalism, electoral ideology, state wealth, and change in the foreignborn population. Specifi cally, the more professional a legislature is, the more likely they are to enact welcoming laws toward immigrants, which Monogan suggests is likely because career politicians in these legislatures are more concerned with their future electoral prospects than those in less professional legislatures. In other words, state legislators are mindful of how opponents could garner votes in the next election and they consider this when voting on immigration policy. Not surprisingly, states with a more liberal electorate are more likely to take a welcoming stance on immigration policy, suggesting that policy makers are somewhat responsive to public opinion. Economics and demographics also play a role, as states with a higher per capita gross state product tend to pass more welcoming laws towards immigrants while states experiencing an increase in the foreign-born population tend to pass policies that are more hostile towards immigrants. 3. These results are quite interesting as they suggest that immigration policy is a function of the professional nature of a state’s legislature, public opinion in the state, overall state economic conditions, and state demographics. Monogan’s results offer a clear picture of how states have chosen to make changes to immigration policy over the last decade in the face of federal inaction. (Source: Jennifer Connolly, in Journal of Public Policy, May 20th, 2013, adapted
 Regarding the language underlined in the text, it can be said that 
Alternativas
Ano: 2013 Banca: FEPESE Órgão: EPAGRI
Q1221838 Inglês
Thinking the unthinkable
Today, it seems that no one is uninformed about the environment. Every day the media shows us more evidence of climate change: extreme weather, melting ice-caps, and rising seas. Most of us believe we can do something to prevent global disaster, such as recycling, or conserving energy. It’s strange to recall that, before the 1960s, few people knew of the damagewe were doing to the planet. However, one scientist had already realized the dangers ahead. And today, this same man believes it may be too late to save the world. In the 1960s, Professor James Lovelock came up with one of the most famous theories on the environment – the GAIA hypothesis. According to this hypothesis, the earth’s atmosphere, soil, and oceans work in concert to provide an inhabitable environment for humans. If we disrupt these elements too severely, the earth may one day become uninhabitable. In the decade before he developed the Gaia hypothesis, Lovelock had created a device to detect atmospheric chemicals. With this device, he discovered particular chemicals, called CFCs. Later, other scientists discovered that these CFCs had damaged the earth’s ozone layer. Before then, we hadn’t knows about the hole in the ozone layer. By 1979, Lovelock had put forward his theories on the environment, in his first book. At that time, few people believe him. Before scientists such as Lovelock publicized environmental issues, the environment hadn’t been a very fashionable topic. In 2004, after many people had only just started to accept the reality of global warming, Lovelock became convinced that climate change was irreversible. In 2006, he wrote another book describing his latest ideas. In 40 years, Lovelock believes large parts of the world will be desert. We will need to make synthesized food to feed the world’s population. ‘Is Lovelock right this time too? Surely we can prevent this nightmare, if we all recycle, use renewable energy, and travel less by plane and car? Lovelock disagrees. According to him, it is now impossible to reverse global warming. We did not act quickly enough when we had the chance. Renewable energy and recycling are a case of too little, too late. Ultimately, if the human race is to survive, Lovelock believes we need to use more technology, not less. In his view, only nuclear energy can provide sufficient power for the planet. Now over 90 years old, Lovelock may not live to find out if he is right. But we will...


Choose the correct alternative according to the text.
Professor James Lovelock thinks...
Alternativas
Ano: 2013 Banca: FEPESE Órgão: EPAGRI
Q1220504 Inglês
The words: However and ultimately, are being used in the text as:
Alternativas
Ano: 2013 Banca: AOCP Órgão: Prefeitura de Seropédica - RJ
Q1219695 Inglês
Why Bilinguals Are Smarter (By YUDHIJIT BHATTACHARJEE) 1. SPEAKING two languages rather than just one has obvious practical benefits in an increasingly globalized world. But in recent years, scientists have begun to show that the advantages of bilingualism are even more fundamental than being able to converse with a wider range of people. Being bilingual, it turns out, makes you smarter. It can have a profound effect on your brain, improving cognitive skills not related to language and even shielding against dementia in old age. 
2. This view of bilingualism is remarkably different from the understanding of bilingualism through much of the 20th century. Researchers, educators and policy makers long considered a second language to be an interference, cognitively speaking, that hindered a child’s academic and intellectual development. 
3. They were not wrong about the interference: there is ample evidence that in a bilingual’s brain both language systems are active even when he is using only one language, thus creating situations in which one system obstructs the other. But this interference, researchers are finding out, isn’t so much a handicap as a blessing in disguise. It forces the brain to resolve internal conflict, giving the mind a workout that strengthens its cognitive muscles. (…) 
4. The collective evidence from a number of such studies suggests that the bilingual experience improves the brain’s so-called executive function — a command system that directs the attention processes that we use for planning, solving problems and performing various other mentally demanding tasks. These processes include ignoring distractions to stay focused, switching attention willfully from one thing to another and holding information in mind — like remembering a sequence of directions while driving. (…) 
5. The key difference between bilinguals and monolinguals may be more basic: a heightened ability to monitor the environment. “Bilinguals have to switch languages quite often — you may talk to your father in one language and to your mother in another language,” says Albert Costa, a researcher at the University of Pompeu Fabra in Spain. “It requires keeping track of changes around you in the same way that we monitor our surroundings when driving.” In a study comparing German-Italian bilinguals with Italian monolinguals on monitoring tasks, Mr. Costa and his colleagues found that the bilingual subjects not only performed better, but they also did so with less activity in parts of the brain involved in monitoring, indicating that they were more efficient at it. (…) 
6. Bilingualism’s effects also extend into the twilight years. In a recent study of 44 elderly Spanish-English bilinguals, scientists led by the neuropsychologist Tamar Gollan of the University of California, San Diego, found that individuals with a higher degree of bilingualism — measured through a comparative evaluation of proficiency in each language — were more resistant than others to the onset of dementia and other symptoms of Alzheimer’s disease: the higher the degree of bilingualism, the later the age of onset. 
7. Nobody ever doubted the power of language. But who would have imagined that the words we hear and the sentences we speak might be leaving such a deep imprint? 
(Source: http://www.nytimes.com/2012/03/18/opinion/sunday/thebenefits-of-bilingualism.html?_r=0. Acesso: 04/02/2013)
The words globalized (paragraph 01), considered (paragraph 02), blessing (paragraph 03), and like (paragraph 04), are respectively presented in text as:
Alternativas
Ano: 2013 Banca: FEPESE Órgão: Prefeitura de São José - SC
Q1213152 Inglês
The strategy used for Reading Comprehension, that is a strategy in which readers use information from a text (including titles, headings, pictures, and diagrams) and their own personal experiences to anticipate what they are about to read (or what comes next), is called: 
Alternativas
Ano: 2013 Banca: CESPE / CEBRASPE Órgão: MPU
Q1210915 Inglês
What is IT Governance?
IT (Information Technology) Governance focuses specifically on information technology systems, their performance and risk management. The primary goals of IT Governance are to assure that the investments in IT generate business value, and to mitigate the risks that are associated with IT. This can be done by implementing an organizational structure with well-defined roles for the responsibility of information, business processes, applications and infrastructure. IT governance should be viewed as how IT creates value that fits into the overall Corporate Governance Strategy of the organization, and never be seen as a discipline on its own. In taking this approach, all stakeholders would be required to participate in the decision making process. This creates a shared acceptance of responsibility for critical systems and ensures that IT related decisions are made and driven by the business and not vice versa. Why it governance is necessary
IT governance is needed to ensure that the investments in IT generate value, and mitigate IT-associated risks, avoiding failure. IT is central to organizational success — effective and efficient delivery of services and goods — especially when the IT is designed to bring about change in an organization. This change process, commonly referred to as “business transformation,” is now the prime enabler of new business models both in the private and public sectors. Business transformation offers many rewards, but it also has the potential for many risks, which may disrupt operations and have unintended consequences. The dilemma becomes how to balance risk and rewards when using IT to enable organizational change. IT Governance Best Practices
Despite efforts of the software industry to identify and adopt best practices in the development of IT projects, there is still a high rate of failure and missed objectives. Most IT projects do not meet the organization’s objectives.
Tendo como referência o texto em língua inglesa apresentado acima, julgue o item.
A adoção de melhores práticas no desenvolvimento de projetos de TI tem evitado a ocorrência de falhas nesses projetos, permitindo que a grande maioria dos projetos satisfaçam todos os objetivos definidos pelas empresas.
Alternativas
Ano: 2013 Banca: CESPE / CEBRASPE Órgão: MPU
Q1210700 Inglês
What is IT Governance?
IT (Information Technology) Governance focuses specifically on information technology systems, their performance and risk management. The primary goals of IT Governance are to assure that the investments in IT generate business value, and to mitigate the risks that are associated with IT. This can be done by implementing an organizational structure with well-defined roles for the responsibility of information, business processes, applications and infrastructure. IT governance should be viewed as how IT creates value that fits into the overall Corporate Governance Strategy of the organization, and never be seen as a discipline on its own. In taking this approach, all stakeholders would be required to participate in the decision making process. This creates a shared acceptance of responsibility for critical systems and ensures that IT related decisions are made and driven by the business and not vice versa. Why it governance is necessary
IT governance is needed to ensure that the investments in IT generate value, and mitigate IT-associated risks, avoiding failure. IT is central to organizational success — effective and efficient delivery of services and goods — especially when the IT is designed to bring about change in an organization. This change process, commonly referred to as “business transformation,” is now the prime enabler of new business models both in the private and public sectors. Business transformation offers many rewards, but it also has the potential for many risks, which may disrupt operations and have unintended consequences. The dilemma becomes how to balance risk and rewards when using IT to enable organizational change. IT Governance Best Practices
Despite efforts of the software industry to identify and adopt best practices in the development of IT projects, there is still a high rate of failure and missed objectives. Most IT projects do not meet the organization’s objectives.
Tendo como referência o texto em língua inglesa apresentado acima, julgue o item.
De acordo com o texto, o foco da governança de tecnologia da informação é o desempenho e a administração do risco em sistemas de tecnologia da informação (TI).
Alternativas
Ano: 2013 Banca: VUNESP Órgão: Prefeitura de Ribeirão Preto - SP
Q1207606 Inglês
A look back across nearly a century of language teaching reveals a cyclical history. The “changing winds and shifting sands” of language teaching methods manifest a new paradigm every quarter of a century or so, with each new paradigm a break from the old but taking with it positive aspects of previous paradigms. These changing methodologies are very much theories in practice. Methods, however, are difficult to define. They manifest themselves in such varieties at times that the term approach may be more accurately descriptive of these general moods. An approach is a general and theoretical view of how language ought to be taught, while a method includes a developed procedure for teaching. The Audiolingual Method, for example, would be better termed an approach because there is such variation within the so-called method and because it is derived from a specific set of theoretical assumptions. We nevertheless refer often to a number of “methods”–since that is the traditional nomenclature–keeping in mind the fuzzy line of distinction between method and approach.
(Principles of Language Learning and Teaching, by Douglas Brown. Adapted)
The author defends the idea that
Alternativas
Ano: 2013 Banca: VUNESP Órgão: Prefeitura de Ribeirão Preto - SP
Q1207499 Inglês
A look back across nearly a century of language teaching reveals a cyclical history. The “changing winds and shifting sands” of language teaching methods manifest a new paradigm every quarter of a century or so, with each new paradigm a break from the old but taking with it positive aspects of previous paradigms. These changing methodologies are very much theories in practice. Methods, however, are difficult to define. They manifest themselves in such varieties at times that the term approach may be more accurately descriptive of these general moods. An approach is a general and theoretical view of how language ought to be taught, while a method includes a developed procedure for teaching. The Audiolingual Method, for example, would be better termed an approach because there is such variation within the so-called method and because it is derived from a specific set of theoretical assumptions. We nevertheless refer often to a number of “methods”–since that is the traditional nomenclature–keeping in mind the fuzzy line of distinction between method and approach.
(Principles of Language Learning and Teaching, by Douglas Brown. Adapted)
As regards textual organization, the sentence – The Audiolingual Method, for example, would be better termed an approach because there is such variation within the socalled method and because it is derived from a specific set of theoretical assumptions. – is used to ____________ the idea expressed in the previous one.
Alternativas
Ano: 2013 Banca: VUNESP Órgão: Prefeitura de Ribeirão Preto - SP
Q1207495 Inglês
During the 1980s an alternative model of reading was proposed that puts together the two views, bottom-up and top-down. The result is called an “interactive” model of the process of reading. It stresses the interplay of all meaning-gathering activities which take place during reading. While the basic theoretical work has centered on native or first language readers, the interactive model has been adopted by many second language reading researchers as well.
Interactive theory acknowledges the role of previous knowledge and prediction, but at the same time, reaffirms the importance of rapid and accurate processing of the actual words of the text. According to the interactive model, the reading process works like this: First, clues to meaning are taken up from the page by the eye and transmitted to the brain. The brain then tries to match existing knowledge to the incoming data in order to facilitate the further processing of new information. On the basis of this previous experience, predictions are made about the content of the text, which, upon further sampling of the data, are either confirmed or revised. Essentially, then, the two processes, bottom-up and top-down, are complementary; one is not able to function properly without the other.
(Academic Reading and the ESL/EFL Teacher by Fraida Dubin and David Bycina, in Teaching English as a Second or Foreign Language, Marianne Celce-Murcia, editor. Adapted.)
No que se refere ao conceito de tipologia textual, pode-se afirmar que o texto é
Alternativas
Ano: 2013 Banca: VUNESP Órgão: Prefeitura de Ribeirão Preto - SP
Q1207461 Inglês
A look back across nearly a century of language teaching reveals a cyclical history. The “changing winds and shifting sands” of language teaching methods manifest a new paradigm every quarter of a century or so, with each new paradigm a break from the old but taking with it positive aspects of previous paradigms. These changing methodologies are very much theories in practice. Methods, however, are difficult to define. They manifest themselves in such varieties at times that the term approach may be more accurately descriptive of these general moods. An approach is a general and theoretical view of how language ought to be taught, while a method includes a developed procedure for teaching. The Audiolingual Method, for example, would be better termed an approach because there is such variation within the so-called method and because it is derived from a specific set of theoretical assumptions. We nevertheless refer often to a number of “methods”–since that is the traditional nomenclature–keeping in mind the fuzzy line of distinction between method and approach.
(Principles of Language Learning and Teaching, by Douglas Brown. Adapted)
In relation to the first two sentences of the text, one can say that
Alternativas
Ano: 2013 Banca: FEPESE Órgão: EPAGRI
Q1202453 Inglês
In the sentence:
“By 1979, Lovelock had put forward his theories on the environment, in his first book.”
The word “his” is used twice. In both cases it refers to:
Alternativas
Ano: 2013 Banca: FEPESE Órgão: Prefeitura de Tijucas - SC
Q1196604 Inglês
Choose the alternative which presents the correct pair of synonyms.
Alternativas
Ano: 2013 Banca: FUNDEPES Órgão: Prefeitura de Belo Horizonte - MG
Q1189490 Inglês
Read the abstract taken from an article written by Professor Dr. Reinildes Dias and answer question.     INTEGRAÇÃO DAS TIC AO ENSINO E APRENDIZAGEM DE LÍNGUA ESTRANGEIRA E O APRENDER COLABORATIVO ONLINE    ABSTRACT: My main focus is to discuss and reflect ____ the importance of the integration of information and communication technology resources with the aim of creating online learning communities to extend time and give more opportunities for interactions among participants in the target language. These online communities can be seen as collaborative networks for the joint construction of knowledge about the foreign language. Examples of both web and web 2.0 resources as well as of the application of principles related to DeskTop publishing are also provided throughout the article. Theoretical and practical aspects based on the collaborative learning approach give support to my work, also including vygostskian learning principles. 
(http://www.reinildes.com.br/incorporacaodasticsmoara2008.pdf. Acessed on March 2nd, 2013.)    Write True (T) or False (F) for the sentences below according to the same article:    (  ) In terms of language teaching, Dias recommends the association of the vygostikyan view of knowledge construction, genre pedagogy and the integration of technological resources. 
(  ) Dias affirms that the integration of technological tools to the classroom environment is enough to make teaching techniques adequate to the 21st century students’ needs. 
(  ) According to the article, students are required to comprehend authentic texts and to be able to produce similar texts of the same genre. 
(  ) Writing short paragraphs about specific themes is an example of a task based on the notion of writing as social practice. 
(  ) Writing activities should follow a circular and recursive process that involves the production of a first draft, followed by peer revision and the teacher’s feedback.    The CORRECT sequence is: 
Alternativas
Ano: 2013 Banca: FUNDEPES Órgão: Prefeitura de Belo Horizonte - MG
Q1189475 Inglês
Read the abstract taken from an article written by Professor Dr. Reinildes Dias and answer question.     INTEGRAÇÃO DAS TIC AO ENSINO E APRENDIZAGEM DE LÍNGUA ESTRANGEIRA E O APRENDER COLABORATIVO ONLINE    ABSTRACT: My main focus is to discuss and reflect ____ the importance of the integration of information and communication technology resources with the aim of creating online learning communities to extend time and give more opportunities for interactions among participants in the target language. These online communities can be seen as collaborative networks for the joint construction of knowledge about the foreign language. Examples of both web and web 2.0 resources as well as of the application of principles related to DeskTop publishing are also provided throughout the article. Theoretical and practical aspects based on the collaborative learning approach give support to my work, also including vygostskian learning principles. 
(http://www.reinildes.com.br/incorporacaodasticsmoara2008.pdf. Acessed on March 2nd, 2013.)     The preposition that correctly completes the sentence: “My main focus is to discuss and reflect ____ the importance of the integration of information” is 
Alternativas
Ano: 2013 Banca: CESPE / CEBRASPE Órgão: STF
Q1188043 Inglês
Repeaters and hubs
A repeater is an electronic device that receives a network signal, cleans it of unnecessary noise, and regenerates it. The signal is retransmitted at a higher power level, or to the other side of an obstruction, so that the signal can cover longer distances without degradation. In most twisted pair Ethernet configurations, repeaters are required for cable that runs longer than 100 meters. A repeater with multiple ports is known as a hub. Repeaters work on the physical layer of the OSI model. Repeaters require a small amount of time to regenerate the signal. This can cause a propagation delay which can affect network performance. As a result, many network architectures limit the number of repeaters that can be used in a row, e.g., the Ethernet 5-4-3 rule. Hubs have been mostly obsoleted by modern switches; but repeaters are used for long distance links, notably undersea cabling.
Bridges
A network bridge connects multiple network segments at the data link layer (layer 2) of the OSI model to form a single network. Bridges broadcast to all ports except the port on which the broadcast was received. However, bridges do not promiscuously copy traffic to all ports, as hubs do. Instead, bridges learn which MAC addresses are reachable through specific ports. Once the bridge associates a port with an address, it will send traffic for that address to that port only. Bridges learn the association of ports and addresses by examining the source address of frames that it sees on various ports. Once a frame arrives through a port, the bridge assumes that the MAC address is associated with that port and stores its source address. The first time a bridge sees a previously unknown destination address, the bridge will forward the frame to all ports other than the one on which the frame arrived. Bridges come in three basic types: Local bridges: Directly connect LANs Remote bridges: Can be used to create a wide area network (WAN) link between LANs. Remote bridges, where the connecting link is slower than the end networks, largely have been replaced with routers. Wireless bridges: Can be used to join LANs or connect remote devices to LANs.
According to the text above, judge the following item.
Multiple network segments at the layer 2 of the OSI model can be connected by a network bridge, in order to form a single network.
Alternativas
Respostas
21621: E
21622: B
21623: E
21624: B
21625: A
21626: A
21627: E
21628: A
21629: D
21630: E
21631: E
21632: B
21633: E
21634: C
21635: C
21636: D
21637: C
21638: C
21639: C
21640: C