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1. Consulta Recursiva é o tipo de consulta que ocorre quando servidor DNS não sabe ou não é responsável pela resolução do nome. O Servidor neste caso realiza consultas recursivas na hierarquia de nomes em busca da resposta para a consulta realizada.
2. Consulta Interativa é o tipo de consulta que ocorre quando servidor DNS não sabe ou não é responsável pela resolução do nome. O Servidor neste caso realiza consultas recursivas na hierarquia de nomes em busca da resposta para a consulta realizada.
3. Consulta Interativa é o tipo de consulta que ocorre quando o servidor DNS apenas responde a consulta caso ele seja responsável pela resolução do nome consultado.
4. Um problema bastante comum de configuração é permitir que qualquer máquina na Internet faça consultas ao servidor DNS recursivo de uma determinada rede. Servidores com esse problema são comumente chamados de servidores DNS recursivos abertos.
Assinale a alternativa que indica todas as afirmativas corretas.
1. Como ponto de partida, o PITR necessita de um arquivo de backup de arquivos de sistema (file system level backup) consistente.
2. Pode-se obter um backup de modo contínuo através do arquivamento contínuo de arquivos WAL, o que é mais rápido que a realização de backups completos (full backup).
3. Para restaurar um banco de dados, faz-se necessário o replay dos arquivos WAL até o fim se quisermos obter um banco de dados consistente como resultado da restauração.
4. pg_dump e pg_dumpall não podem ser utilizados como parte da solução Postgres de arquivamento contínuo e, portanto, não possibilitam implementar PITR.
Assinale a alternativa que indica todas as afirmativas corretas.
Com relação a este assunto, assinale a alternativa correta.
1. A utilização de switches em uma rede local não resolve o problema de excesso de colisões.
2. Para a resolução de problema de excesso de broadcasts se faz necessária a segmentação da rede, através de roteadores ou VLAN’s.
3. Spanning Tree Protocol (STP) é um protocolo usado como alternativa para impossibilitar que aconteçam loops de Camada de Enlace em redes redundantes de computadores.
4. O Reliable Spanning Tree Protocol (RSTP) tem como principal finalidade reduzir o tempo de espera da transição da porta bloqueada para a porta ativa.
Assinale a alternativa que indica todas as afirmativas corretas.
1. Uma máquina gerenciada pelo SNMP deve possuir um agente e uma base de informações MIB.
2. O funcionamento do SNMP é baseado em dois dispositivos: o agente e o gerente.
3. O agente é um processo executado na máquina gerenciada, responsável pela manutenção das informações de gerência da máquina.
4. A operação SET é utilizada para alterar o valor da variável; o agente solicita que o gerente faça uma alteração no valor da variável.
Assinale a alternativa que indica todas as afirmativas corretas.
Cow Threat
Cows are walking machines. They transform materials (grass, hay, water, and feed) into finished products (milk, beef, leather, and so on).
As any factory, cows produce waste. Solid waste is eliminated through the rear end of these ‘complex machines’, and it is used as fertilizer.
The fermentation process in their four stomachs produces gas. These walking machines have two chimneys: one in the front end, and other in the rear end. Gaseous emissions through the front end chimney are called burps. Cows burp a lot. Every minute and half these burps release methane gas. Methane is dangerous to the planet because it contributes to the greenhouse effect.
The world population is growing very fast. That means there are more people eating beef. Consequently, there is more cattle – more walking machines – producing more methane gas.
This is the problem, but very few people want to change their eating habits. What about you?
Analyze these sentences:
1. The words people and cattle are being used in the text as nouns in the singular form.
2. In “…and it is used as fertilizer.”, the underlined word is an example of the comparative of equality.
3. The word in bold in “Consequently, there is more cattle” can be replaced by therefore without changing its meaning.
Choose the alternative which presents the correct ones.
Cow Threat
Cows are walking machines. They transform materials (grass, hay, water, and feed) into finished products (milk, beef, leather, and so on).
As any factory, cows produce waste. Solid waste is eliminated through the rear end of these ‘complex machines’, and it is used as fertilizer.
The fermentation process in their four stomachs produces gas. These walking machines have two chimneys: one in the front end, and other in the rear end. Gaseous emissions through the front end chimney are called burps. Cows burp a lot. Every minute and half these burps release methane gas. Methane is dangerous to the planet because it contributes to the greenhouse effect.
The world population is growing very fast. That means there are more people eating beef. Consequently, there is more cattle – more walking machines – producing more methane gas.
This is the problem, but very few people want to change their eating habits. What about you?
Cow Threat
Cows are walking machines. They transform materials (grass, hay, water, and feed) into finished products (milk, beef, leather, and so on).
As any factory, cows produce waste. Solid waste is eliminated through the rear end of these ‘complex machines’, and it is used as fertilizer.
The fermentation process in their four stomachs produces gas. These walking machines have two chimneys: one in the front end, and other in the rear end. Gaseous emissions through the front end chimney are called burps. Cows burp a lot. Every minute and half these burps release methane gas. Methane is dangerous to the planet because it contributes to the greenhouse effect.
The world population is growing very fast. That means there are more people eating beef. Consequently, there is more cattle – more walking machines – producing more methane gas.
This is the problem, but very few people want to change their eating habits. What about you?
Cow Threat
Cows are walking machines. They transform materials (grass, hay, water, and feed) into finished products (milk, beef, leather, and so on).
As any factory, cows produce waste. Solid waste is eliminated through the rear end of these ‘complex machines’, and it is used as fertilizer.
The fermentation process in their four stomachs produces gas. These walking machines have two chimneys: one in the front end, and other in the rear end. Gaseous emissions through the front end chimney are called burps. Cows burp a lot. Every minute and half these burps release methane gas. Methane is dangerous to the planet because it contributes to the greenhouse effect.
The world population is growing very fast. That means there are more people eating beef. Consequently, there is more cattle – more walking machines – producing more methane gas.
This is the problem, but very few people want to change their eating habits. What about you?
Analyze the sentences according to structure and grammar use.
1. The words they and their, in bold in the text, are object pronoun and possessive adjective, respectively.
2. The negative form of: “These walking machines have two chimneys”, is “These walking machines haven’t two chimneys”.
3. The underlined word in the following sentence: “These walking machines” is a gerund form.
4. The word release is synonym of discharge.
Choose the alternative which presents the correct ones.
Cow Threat
Cows are walking machines. They transform materials (grass, hay, water, and feed) into finished products (milk, beef, leather, and so on).
As any factory, cows produce waste. Solid waste is eliminated through the rear end of these ‘complex machines’, and it is used as fertilizer.
The fermentation process in their four stomachs produces gas. These walking machines have two chimneys: one in the front end, and other in the rear end. Gaseous emissions through the front end chimney are called burps. Cows burp a lot. Every minute and half these burps release methane gas. Methane is dangerous to the planet because it contributes to the greenhouse effect.
The world population is growing very fast. That means there are more people eating beef. Consequently, there is more cattle – more walking machines – producing more methane gas.
This is the problem, but very few people want to change their eating habits. What about you?
Complete the spaces of the sentence below with the correct prepositions.
“Agriculture, Ecosystems & Environment deals _________________ the interface between agriculture and _________________ environment, specifically _________________ agriculture influences the environment and how changes _________________ that environment impact agroecosystems.”
Which alternative presents the correct missing prepositions?
Cow Threat
Cows are walking machines. They transform materials (grass, hay, water, and feed) into finished products (milk, beef, leather, and so on).
As any factory, cows produce waste. Solid waste is eliminated through the rear end of these ‘complex machines’, and it is used as fertilizer.
The fermentation process in their four stomachs produces gas. These walking machines have two chimneys: one in the front end, and other in the rear end. Gaseous emissions through the front end chimney are called burps. Cows burp a lot. Every minute and half these burps release methane gas. Methane is dangerous to the planet because it contributes to the greenhouse effect.
The world population is growing very fast. That means there are more people eating beef. Consequently, there is more cattle – more walking machines – producing more methane gas.
This is the problem, but very few people want to change their eating habits. What about you?
Match the words on column 1 with their meanings on column 2.
Column 1 Words
1. hay
2. waste
3. rear
4. burp
5. cattle
Column 2 Meanings
( ) the back part of something.
( ) cows and bulls that are kept for their milk or meat.
( ) grass that is cut and dried and used as animal food.
( ) unwanted matter or material of any type.
( ) to allow air from the stomach to come out through the mouth in anoisy way.
Choose the alternative which presents the correct sequence:
Cow Threat
Cows are walking machines. They transform materials (grass, hay, water, and feed) into finished products (milk, beef, leather, and so on).
As any factory, cows produce waste. Solid waste is eliminated through the rear end of these ‘complex machines’, and it is used as fertilizer.
The fermentation process in their four stomachs produces gas. These walking machines have two chimneys: one in the front end, and other in the rear end. Gaseous emissions through the front end chimney are called burps. Cows burp a lot. Every minute and half these burps release methane gas. Methane is dangerous to the planet because it contributes to the greenhouse effect.
The world population is growing very fast. That means there are more people eating beef. Consequently, there is more cattle – more walking machines – producing more methane gas.
This is the problem, but very few people want to change their eating habits. What about you?
Read these sentences and, according to the text, decide if they are true ( T ) or false ( F ).
( ) Cows have more than one stomach.
( ) The production of methane is a serious problem.
( ) Cows eliminate gases through their front and rear ends.
( ) Burps are eliminations of gas through the rear end.
( ) Cows burp approximately 10 times in one hour.
Choose the alternative which presents the correct sequence:
Identifique abaixo as afirmativas verdadeiras ( V ) e as falsas ( F ) sobre a produção energética no Brasil.
( ) Principalmente por conta da disponibilidade de recursos hídricos, bem como do domínio da tecnologia que os envolve, o Brasil destaca-se mundialmente pela utilização de matrizes energéticas limpas.
( ) Segundo ranking apresentado pela Global Wind Energy Council (GWEC), divulgado em fevereiro de 2017, o Brasil é o país com menor capacidade instalada de energia eólica na América Latina.
( ) Como forma de incentivo à produção de energia renovável, a Agência Nacional de Energia Elétrica (ANEEL) estabeleceu a Resolução Normativa 482, de 17 de abril de 2012, que, entre outras determinações, prevê o sistema de compensação de energia elétrica.
( ) A utilização de biomassa como fonte para a produção de energia tem diminuído no Brasil em virtude da pouca capacidade já instalada para sua geração e da escassez de matéria prima.
Assinale a alternativa que indica a sequência correta, de cima para baixo.
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