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Analise as afirmativas abaixo:
I. Hub (concentrador): Os Hubs se comparam às Bridges (pontes), mas oferecem uma conexão mais direta entre os computadores de origem e de destino. Quando um computador recebe um pacote de dados, cria uma conexão interna separada ou segmento, entre duas de suas portas e encaminha o pacote somente à porta apropriada do computador de destino, com base nas informações do cabeçalho de cada pacote. Isso isola a conexão das outras portas e fornece aos computadores de origem e de destino, acesso à largura de banda total da rede.
II. Repetidores: Recebem os sinais e os retransmitem com sua intensidade e definições originais. Isso aumenta o tamanho prático de um cabo. A instalação de repetidores ao longo de um cabo, permite que os sinais percorram distâncias maiores.
III. Roteador: É um dispositivo que funciona como uma Bridge ou Switch, mas tem mais funcionalidade. Ao transferir os dados entre diferentes segmentos de rede, os roteadores examinam o cabeçalho de um pacote para determinar o melhor caminho para seu envio. O roteador sabe o caminho de todos os segmentos de rede acessando as informações armazenadas na tabela de roteamento. Os roteadores permitem que todos os usuários da rede compartilhem uma única conexão com a Internet ou uma rede de longa distância. Os roteadores garantem que os pacotes percorram caminhos mais eficientes até seus destinos.
Está(ão) correta(s) apenas a(s) afirmativa(s):
I. O SAMBA é um servidor, um conjunto de ferramentas que permite que máquinas Linux e Windows se comuniquem entre si, compartilhando serviços (arquivos, diretório, impressão) através do protocolo SMB (Server Message Block)/CIFS (Common Internet File System), equivalentes à implementação NetBEUI no Windows. O SAMBA é uma das soluções em ambiente UNIX capaz de interligar redes heterogêneas.
II. Com o SAMBA, é possível construir domínios completos, fazer controle de acesso a nível de usuário, compartilhamento, montar um servidor WINS, servidor de domínio, impressão, etc. Na maioria dos casos, o controle de acesso e exibição de diretórios no samba é mais minucioso e personalizável que no próprio Windows.
III. Para Configurar um Servidor SAMBA em sua rede, é necessário ter uma máquina com o Windows instalado e configurá-la para que aceite o acesso das demais máquinas instaladas, tornando-a assim, um servidor Windows SAMBA.
Está(ão) correta(s) apenas a(s) afirmativa(s):
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TAB_CLIENTES: cnpj, nome, endereço, cep, telefone, datadenascimento. TAB_LOCACAO: cnpj, data, filme.
Período: datainicial, datafinal
I. Quatro de seus membros serão designados pelo Ministro de Estado da Integração Nacional, após prévia aprovação do Presidente da República.
II. O prazo de duração do mandato dos membros do Conselho representantes dos Ministérios é improrrogável e de dois anos.
III. O Presidente da Companhia é membro nato do Conselho.
IV. O Presidente do Conselho, se impedido de exercer sua função, será substituído pelo membro do órgão mais antigo na função, e, no caso de empate, pelo mais idoso.
V. A Presidência do Conselho é exercida pelo Ministro da Integração Nacional.
Está(ão) correta(s) apenas a(s) afirmativa(s):
1. Conselho de Administração.
2. Conselho Fiscal.
3. Diretoria Executiva.
( ) Opinar sobre o relatório anual da administração e as demonstrações financeiras, fazendo constar do seu parecer as informações complementares que julgar necessárias e úteis.
( ) Propor alterações no Estatuto da Companhia.
( ) Aprovar as políticas, diretrizes e prioridades que devem ser observadas na programação e execução das atividades da Companhia.
( ) Aprovar os regimentos internos dos órgãos que compõem a estrutura organizacional da Companhia.
( ) Autorizar a locação de bens patrimoniais a terceiros e de bens de terceiros para uso da Companhia.
A seqüência está correta em:
Oil is the largest source of liquid fuel and, in spite of attempts to develop synthetic fuels, world consumption of oil
products in increasing.
The oil industry is not much more than a hundred years old. It began when the first oil well was drilled in 1859. In the
early days, oil was used to light houses because there was no electricity and gas was very scarce. Later, people began to use oil
for heating too.
Most industries use machinery to make things. Every machine needs oil in order to run easily. Even a small clock or watch
needs a little oil from time to time.
The engines of many machines use oil fuels petrol, kerosene or diesel. Cars, buses, trucks, tractors, and small aircraft use
petroleum chemicals: synthetic rubber, plastics, synthetic fiber materials for clothes and for the home, paints, materials which
help to stop rust, photographic materials, soap and cleaning materials (detergents), drugs, fertilizers for farms and gardens, food
containers, and may others.
In 1900 the world’s oil production was less than 2 million tons a year. Today the oil industry is one of the world’s largest
and most important suppliers of raw materials.
Oil is the largest source of liquid fuel and, in spite of attempts to develop synthetic fuels, world consumption of oil
products in increasing.
The oil industry is not much more than a hundred years old. It began when the first oil well was drilled in 1859. In the
early days, oil was used to light houses because there was no electricity and gas was very scarce. Later, people began to use oil
for heating too.
Most industries use machinery to make things. Every machine needs oil in order to run easily. Even a small clock or watch
needs a little oil from time to time.
The engines of many machines use oil fuels petrol, kerosene or diesel. Cars, buses, trucks, tractors, and small aircraft use
petroleum chemicals: synthetic rubber, plastics, synthetic fiber materials for clothes and for the home, paints, materials which
help to stop rust, photographic materials, soap and cleaning materials (detergents), drugs, fertilizers for farms and gardens, food
containers, and may others.
In 1900 the world’s oil production was less than 2 million tons a year. Today the oil industry is one of the world’s largest
and most important suppliers of raw materials.
Oil is the largest source of liquid fuel and, in spite of attempts to develop synthetic fuels, world consumption of oil
products in increasing.
The oil industry is not much more than a hundred years old. It began when the first oil well was drilled in 1859. In the
early days, oil was used to light houses because there was no electricity and gas was very scarce. Later, people began to use oil
for heating too.
Most industries use machinery to make things. Every machine needs oil in order to run easily. Even a small clock or watch
needs a little oil from time to time.
The engines of many machines use oil fuels petrol, kerosene or diesel. Cars, buses, trucks, tractors, and small aircraft use
petroleum chemicals: synthetic rubber, plastics, synthetic fiber materials for clothes and for the home, paints, materials which
help to stop rust, photographic materials, soap and cleaning materials (detergents), drugs, fertilizers for farms and gardens, food
containers, and may others.
In 1900 the world’s oil production was less than 2 million tons a year. Today the oil industry is one of the world’s largest
and most important suppliers of raw materials.
Oil is the largest source of liquid fuel and, in spite of attempts to develop synthetic fuels, world consumption of oil
products in increasing.
The oil industry is not much more than a hundred years old. It began when the first oil well was drilled in 1859. In the
early days, oil was used to light houses because there was no electricity and gas was very scarce. Later, people began to use oil
for heating too.
Most industries use machinery to make things. Every machine needs oil in order to run easily. Even a small clock or watch
needs a little oil from time to time.
The engines of many machines use oil fuels petrol, kerosene or diesel. Cars, buses, trucks, tractors, and small aircraft use
petroleum chemicals: synthetic rubber, plastics, synthetic fiber materials for clothes and for the home, paints, materials which
help to stop rust, photographic materials, soap and cleaning materials (detergents), drugs, fertilizers for farms and gardens, food
containers, and may others.
In 1900 the world’s oil production was less than 2 million tons a year. Today the oil industry is one of the world’s largest
and most important suppliers of raw materials.