Magna Concursos

Foram encontradas 70 questões.

324513 Ano: 2012
Disciplina: TI - Redes de Computadores
Banca: CESGRANRIO
Orgão: Petrobrás
No que diz respeito ao controle de congestionamento no TCP, a política geral se baseia em três fases: partida lenta, evitar o congestionamento e detecção de congestionamento. No algoritmo de partida lenta, o tamanho da janela de congestionamento (cwnd) começa com um tamanho de segmento máximo – MSS. O tamanho da janela aumenta de um MSS, cada vez que for recebida uma confirmação. Como o próprio nome indica, a janela começa lentamente, porém cresce de uma forma característica.
Até atingir um limiar, o tamanho da janela de congestionamento aumenta
 

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324512 Ano: 2012
Disciplina: TI - Redes de Computadores
Banca: CESGRANRIO
Orgão: Petrobrás
Em uma rede orientada a conexões, os pacotes que pertencem a um fluxo seguem a mesma rota, enquanto que, em uma rede não orientada a conexões, esses pacotes podem seguir rotas diferentes. As necessidades de cada fluxo são definidas por quatro parâmetros que determinam a qualidade de serviço (QoS).
Esses parâmetros são, respectivamente,
 

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Questão presente nas seguintes provas
324511 Ano: 2012
Disciplina: TI - Redes de Computadores
Banca: CESGRANRIO
Orgão: Petrobrás
O IPv6 representa a solução de 128 bits para substituição do IPv4 de 32 bits utilizado na internet. O IPv6 introduziu o conceito de cabeçalho de extensão, criado com a finalidade de oferecer informações extras, desde que codificadas de maneira eficiente.
Para fornecer a lista parcial de roteadores a visitar e verificar a identidade do transmissor, são utilizados, respectivamente, os seguintes cabeçalhos de extensão:
 

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324510 Ano: 2012
Disciplina: TI - Redes de Computadores
Banca: CESGRANRIO
Orgão: Petrobrás
O MultiProtocol Label Switching (MPLS) representa uma nova tecnologia baseada em rótulos. Ele vem sendo empregado pelos provedores de internet, com a finalidade de mover o tráfego de internet por suas redes. A figura ilustra um cabeçalho MPLS, que consiste em uma ou mais entradas, cada uma com 32 bits de extensão, especificando um rótulo mais informações para controlar o seu processamento.
RÓTULO QoS S TTL
O tamanho desse rótulo,em bits, é:
 

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324509 Ano: 2012
Disciplina: TI - Redes de Computadores
Banca: CESGRANRIO
Orgão: Petrobrás
O protocolo OSPF é utilizado, na internet, com os seguintes tipos de roteamento:
 

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324508 Ano: 2012
Disciplina: TI - Redes de Computadores
Banca: CESGRANRIO
Orgão: Petrobrás
Em conformidade com o Modelo de Referência OSI/ISO, dois protocolos da pilha TCP/IP funcionam na camada de transporte, sendo que, o primeiro, com conexão, prioriza a segurança, enquanto que o segundo, sem conexão, dá prioridade à agilidade.
Esses protocolos são conhecidos, respectivamente, pelas siglas:
 

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324507 Ano: 2012
Disciplina: TI - Redes de Computadores
Banca: CESGRANRIO
Orgão: Petrobrás
Network Adress Translation (NAT) constitui uma técnica para minimizar a falta de endereços IP. Como consequência, foram criados endereços privativos em cada classe.
Na classe B, o intervalo de endereço reservado é
 

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324506 Ano: 2012
Disciplina: TI - Redes de Computadores
Banca: CESGRANRIO
Orgão: Petrobrás
Uma sub-rede de computadores com acesso à internet está operando com base no esquema de máscara de tamanho variável e configuração CIDR 154.228.160.0/21.
A máscara e a faixa total de endereços que essa sub-rede está utilizando são, respectivamente,
 

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Questão presente nas seguintes provas
324505 Ano: 2012
Disciplina: TI - Redes de Computadores
Banca: CESGRANRIO
Orgão: Petrobrás
Redes de computadores com acesso à internet operam com base nos protocolos da arquitetura TCP/IP.
O IP versão 4 emprega classes, dentre as quais a B que engloba endereços cujo primeiro octeto está enquadrado numa faixa que se inicia em 128 e termina em
 

Provas

Questão presente nas seguintes provas
Text I
A Day in the Life of the Women of O&G
by Jaime Kammerzell From Rigzone Contributor. Tuesday, February 14, 2012
Although far fewer women work in the oil and gas (O&G) industry compared to men, many women find rewarding careers in the industry. Five women were asked the same questions regarding their career choices in the oil and gas industry.
Question 1: Why did you choose the oil and gas industry?
Woman 1: Cool technology, applying science and money.
Woman 2: It seemed interesting and the pay was good.
Woman 3: They offered me a job! I couldn’t turn down the great starting salary and a chance to live in New Orleans.
Woman 4: I did not really choose the oil and gas industry as much as it chose me.
Woman 5: I chose the oil and gas industry because of the challenging projects, and I want to be part of our country’s energy solution.
Question 2: How did you get your start in the oil and gas industry?
Woman 1: I went to a university that all major oil companies recruit. I received a summer internship with Texaco before my last year of my Master’s degree.
Woman 2: I was recruited at a Texas Tech Engineering Job Fair.
Woman 3: At the time, campus recruiters came to the geosciences department of my university annually and they sponsored scholarships for graduate students to help complete their research. Even though my Master’s thesis was more geared toward environmental studies, as a recipient of one of these scholarships, my graduate advisor strongly encouraged me to participate when the time came for O&G Industry interviews.
Woman 4: I was working for a company in another state where oil and gas was not its primary business. When the company sold its division in the state where I was working, they offered me a position at the company’s headquarters in Houston managing the aftermarket sales for the company’s largest region. Aftermarket sales supported the on-highway, construction, industrial, agricultural and the oil and gas markets. After one year, the company asked me to take the position of managing their marine and offshore power products division. I held that position for three years. I left that company to join a new startup company where I hold the position of president.
Woman 5: My first job in the oil and gas industry was an internship with Mobil Oil Corp., in New Orleans.I worked with a lot of smart, focused and talented geoscientists and engineers.
Question 3: Describe your typical day.
Woman 1: Tough one to describe a typical day. I generally read email, go to a couple of meetings and work with the field’s earth model or look at seismic.
Woman 2: I talk with clients, help prepare bids and work on getting projects out the door. My days are never the same, which is what I love about the job I have.
Woman 3: I usually work from 7:30 a.m. – 6:30 p.m. (although the official day is shorter). We call the field every morning for an update on operations, security, construction, facilities and production engineering activities. I work with my team leads on short-term and long-term projects to enhance production (a lot of emails and Powerpoint). I usually have 2-3 meetings per day to discuss/prioritize/review ongoing or upcoming work (production optimization, simulation modeling, drilling plans, geologic interpretation, workovers, etc.). Beyond our team, I also participate in a number of broader business initiatives and leadership teams.
Woman 4: A typical day is a hectic day for me. My day usually starts well before 8 a.m. with phone calls and emails with our facility in Norway, as well as other business relationships abroad. At the office, I am involved in the daily business operations and also stay closely involved in the projects and the sales efforts. On any given day I am working on budgets and finance, attending project meetings, attending engineering meetings, reviewing drawings and technical specifications, meeting with clients and prospective clients, reviewing sales proposals, evaluating new business opportunities and making a lot of decisions.
Woman 5: On most days I work on my computer to complete my projects. I interpret logs, create maps, research local and regional geology or write documents. I go to project meetings almost every day. I typically work only during business hours, but there are times when I get calls at night or on weekends from a rig or other geologists for assistance with a technical problem.
Adapted from URL: <http://www.rigzone.com/news/article.asp?a_id=11508>. Retrieved on February 14, 2012. 11
Text II
How To Start A Career In The Oil And Gas Industry:
What Employers Say
By Katie Weir
From Talent Acquisition Specialist, Campus
Talisman Energy
How to start your career, step by step
Fix up your resumé – take it to your career centre at your university and they’ll help you.
Write a compelling cover letter that speaks to your best qualities – save the pretentious language for your English papers.
Join a professional association and attend their events – if you feel uncomfortable attending alone, try volunteering at them. By having a job to do, it gives you an excuse to interact with the attendees, and an easy way to start up a conversation the next time you see them.
Do your research – I can’t stress this enough. I want students to apply to Talisman, not because we have open jobs, but because they actually have an interest in what we’re doing, and want to be a part of it.
Be confident, but stay humble – it’s important to communicate your abilities effectively, but it’s also important to be conscious of the phrase: “sense of entitlement.” This generation entering the workforce has already been branded with the word “entitlement,” so students will need to fight against this bias from the very beginning of any relationship with people in the industry – be aware that you will need to roll up your sleeves and work hard for the first couple years, and you will be rewarded in the end.
Retrieved and adapted from URL: <http://talentegg.ca/incubator/2010/11/29/how-to-start-a-career-in-the-oil-and-gas-industry -what-employers-say/>. Acess on: February 14, 2012.
Concerning Texts I and II, it is possible to affirm that
 

Provas

Questão presente nas seguintes provas