Foram encontradas 2.117 questões

Resolva questões gratuitamente!

Junte-se a mais de 4 milhões de concurseiros!

Q461184 Redes de Computadores
A tecnologia que implementa o padrão IEEE 802.16, utilizada para operação em redes metropolitanas com alcance de até 50 km, com micro-ondas, trabalhando como comunicaçãomultiponto, comtaxa de transferência até 70 Mbps e cujo uso mais comum é o acesso à internet, inclusive com acesso VoIP, é denominada de:
Alternativas
Q461183 Segurança da Informação
O ataque em que um hacker envia um certificado alterado para um computador cliente, de modo que essa máquina cliente seja induzida a tratar o computador do hacker como o servidor alvo e assim este consegue receber a chave pública acoplada ao certificado, capturando e traduzindo os dados criptografados sem que o cliente perceba, já que o hacker reenvia os dados para o servidor alvo depois de interceptá-los, é denominado de:
Alternativas
Q461182 Banco de Dados
Um administrador de banco de dados (BD) do MS SQL Server 7.0 precisa utilizar uma ferramenta para enviar, manualmente, comandos Transact-SQL e stored procedures para o mecanismo de BD do servidor e obter uma exibição visual do plano de execução do MS SQL Server. Para isso, ele vai usar o:
Alternativas
Q461181 Banco de Dados
O comando do SQL ANSI-99 para eliminar a tabela XYde umbanco de dados KZ é o:
Alternativas
Q461180 Banco de Dados
Seja o modelo entidade-relacionamento, segundo PeterChen, abaixo:

imagem-005.jpg

Um mapeamento possível para o modelo relacional de dados apresentados acima, dentro dos critérios de normalização, no qual os campos com sublinhado simples são componentes de chave primária, em itálico, são os de chave estrangeira, e, com sublinhado duplo, são os de chave primária e estrangeira, é:
Alternativas
Q461179 Segurança da Informação
Em uma empresa, ao serem efetuados vários testes de penetração a fim de compor um índice para precisar o quanto da rede está aberta a invasões, está sendo analisado um aspecto da análise de risco associado à:
Alternativas
Q461178 Programação
Uma característica importante da arquitetura do ApacheTomcat 7 é que:
Alternativas
Q461177 Redes de Computadores
Uma empresa instalou um firewall para controlar o acesso aos serviços HTTP, TFTP e POP3. Nesse caso, esse firewall vai ser configurado para controlar o acesso, respectivamente, às portas tcp/udp de número:
Alternativas
Q461176 Algoritmos e Estrutura de Dados
Seja a árvore binária abaixo:

imagem-004.jpg

Um tipo de encaminhamento pós-fixado nessa árvore é:
Alternativas
Q461175 Redes de Computadores
Em uma empresa, necessita-se montar uma estrutura de rede cujas características envolvam técnica de comutação de quadros efetuada de maneira confiável, com um serviço orientado à conexão que operem na Camada Nível 2 do modelo OSI/ISO, com baixo retardo e sem controle de erro nos nós. Essa estrutura que será implementada segundo os critérios do/a:
Alternativas
Q461174 Programação
Na declaração das classes Ajuda e Teste abaixo, utilizando a sintaxe de uma linguagem orientada a objeto denominadaC++,

imagem-003.jpg

uma declaração correta de umobjeto é:
Alternativas
Q461173 Engenharia de Software
No domínio da orientação a objetos, a ideia de existência de dados e funcionalidades acessados somente pelos objetos de uma classe, de forma interna, e de que deva existir alguma forma protegida de acesso a esses dados e funcionalidades, demodo que objetos de classes externas os enxerguem, está associada aos conceitos, respectivamente, de:
Alternativas
Q461172 Algoritmos e Estrutura de Dados
Seja o algoritmo abaixo, no qual o operador “!” inverte o valor dos bits de um número inteiro, e 1 é verdadeiro e 0 é falso.

imagem-002.jpg

Ao se executar esse algoritmo, “frase” será escrita:
Alternativas
Q461171 Sistemas Operacionais
Um sistema operacional, em uma máquina qualquer, faz sua gerência de memória baseada em uma política de substituição de páginas, na qual é selecionada para se carregar na memória a página menos referenciada, como quadromenos usado.

Essa política é identificada pelo acrônimo:
Alternativas
Q461170 Inglês
Read the text below and answer the questions that follow.

Text:

How to get the most enjoyment from your
color TV set



Your new color TV incorporates a host of features designed to give you excellent performance. Besides, this model utilizes a highly sophisticated control microprocessor that can give you unprecedented convenience and control in the areas of picture adjustment, channel tuning, monitor operation, on-screen information, and remote control.

We therefore strongly urge that you read all of these instructions before using yourTV for the first time.

Installation

Antenna

Unless your TV is connected to a cable TV system, or to a centralized antenna system, a good outdoor color TV antenna is recommended for the best performance. However, if you are located in a strong signal area that is free from interference and ghost conditions (multipath), an indoor antenna may be sufficient. The two pole antenna packedwith this set is for your convenience only. It is not capable of providing you with the sharp detail and rich color that this televisionwas designed to display.

Location

Select an area where sunlight or bright indoor illumination will not fall directly on the picture screen. Also, be sure that the location selected allows a free flow of air to and fromthe perforated back cover of the set.

Note

Never remove the back cover of the set. This can expose you to very high voltage and other hazards.

If the set does not operate properly, unplug it and call your dealer or service shop.

(Fonte: Color Television – Operating Instructions.)

According to the text, if the new color TV set does not operate properly, you should:
Alternativas
Q461169 Inglês
Read the text below and answer the questions that follow.

Text:

How to get the most enjoyment from your
color TV set



Your new color TV incorporates a host of features designed to give you excellent performance. Besides, this model utilizes a highly sophisticated control microprocessor that can give you unprecedented convenience and control in the areas of picture adjustment, channel tuning, monitor operation, on-screen information, and remote control.

We therefore strongly urge that you read all of these instructions before using yourTV for the first time.

Installation

Antenna

Unless your TV is connected to a cable TV system, or to a centralized antenna system, a good outdoor color TV antenna is recommended for the best performance. However, if you are located in a strong signal area that is free from interference and ghost conditions (multipath), an indoor antenna may be sufficient. The two pole antenna packedwith this set is for your convenience only. It is not capable of providing you with the sharp detail and rich color that this televisionwas designed to display.

Location

Select an area where sunlight or bright indoor illumination will not fall directly on the picture screen. Also, be sure that the location selected allows a free flow of air to and fromthe perforated back cover of the set.

Note

Never remove the back cover of the set. This can expose you to very high voltage and other hazards.

If the set does not operate properly, unplug it and call your dealer or service shop.

(Fonte: Color Television – Operating Instructions.)

Read these sentences:

1. Please __________ the TV. I want to watch the news.
2. Don’t forget to __________ the TV before you leave the room.
3. __________ the radio, please! It’s too low. I can’t hear the news.

The verbs that complete the sentences correctly are, respectively:
Alternativas
Q461168 Inglês
Read the text below and answer the questions that follow.

Text:

How to get the most enjoyment from your
color TV set



Your new color TV incorporates a host of features designed to give you excellent performance. Besides, this model utilizes a highly sophisticated control microprocessor that can give you unprecedented convenience and control in the areas of picture adjustment, channel tuning, monitor operation, on-screen information, and remote control.

We therefore strongly urge that you read all of these instructions before using yourTV for the first time.

Installation

Antenna

Unless your TV is connected to a cable TV system, or to a centralized antenna system, a good outdoor color TV antenna is recommended for the best performance. However, if you are located in a strong signal area that is free from interference and ghost conditions (multipath), an indoor antenna may be sufficient. The two pole antenna packedwith this set is for your convenience only. It is not capable of providing you with the sharp detail and rich color that this televisionwas designed to display.

Location

Select an area where sunlight or bright indoor illumination will not fall directly on the picture screen. Also, be sure that the location selected allows a free flow of air to and fromthe perforated back cover of the set.

Note

Never remove the back cover of the set. This can expose you to very high voltage and other hazards.

If the set does not operate properly, unplug it and call your dealer or service shop.

(Fonte: Color Television – Operating Instructions.)

The word HAZARDS in “This can expose you to very high voltage and other hazards”means:
Alternativas
Q461167 Inglês
Read the text below and answer the questions that follow.

Text:

How to get the most enjoyment from your
color TV set



Your new color TV incorporates a host of features designed to give you excellent performance. Besides, this model utilizes a highly sophisticated control microprocessor that can give you unprecedented convenience and control in the areas of picture adjustment, channel tuning, monitor operation, on-screen information, and remote control.

We therefore strongly urge that you read all of these instructions before using yourTV for the first time.

Installation

Antenna

Unless your TV is connected to a cable TV system, or to a centralized antenna system, a good outdoor color TV antenna is recommended for the best performance. However, if you are located in a strong signal area that is free from interference and ghost conditions (multipath), an indoor antenna may be sufficient. The two pole antenna packedwith this set is for your convenience only. It is not capable of providing you with the sharp detail and rich color that this televisionwas designed to display.

Location

Select an area where sunlight or bright indoor illumination will not fall directly on the picture screen. Also, be sure that the location selected allows a free flow of air to and fromthe perforated back cover of the set.

Note

Never remove the back cover of the set. This can expose you to very high voltage and other hazards.

If the set does not operate properly, unplug it and call your dealer or service shop.

(Fonte: Color Television – Operating Instructions.)

According to the text, the new color TV set should be placed:
Alternativas
Q461166 Inglês
Read the text below and answer the questions that follow.

Text:

How to get the most enjoyment from your
color TV set



Your new color TV incorporates a host of features designed to give you excellent performance. Besides, this model utilizes a highly sophisticated control microprocessor that can give you unprecedented convenience and control in the areas of picture adjustment, channel tuning, monitor operation, on-screen information, and remote control.

We therefore strongly urge that you read all of these instructions before using yourTV for the first time.

Installation

Antenna

Unless your TV is connected to a cable TV system, or to a centralized antenna system, a good outdoor color TV antenna is recommended for the best performance. However, if you are located in a strong signal area that is free from interference and ghost conditions (multipath), an indoor antenna may be sufficient. The two pole antenna packedwith this set is for your convenience only. It is not capable of providing you with the sharp detail and rich color that this televisionwas designed to display.

Location

Select an area where sunlight or bright indoor illumination will not fall directly on the picture screen. Also, be sure that the location selected allows a free flow of air to and fromthe perforated back cover of the set.

Note

Never remove the back cover of the set. This can expose you to very high voltage and other hazards.

If the set does not operate properly, unplug it and call your dealer or service shop.

(Fonte: Color Television – Operating Instructions.)

Consider these sentences about the new color TV antenna.

1. Agood outdoor color TV antenna is recommended for the best performance if your TV is not connected to a cableTV system.
2. An indoor antenna may be sufficient if you are located in a strong signal area that is free from interference and ghost conditions.
3. The two pole antenna packed with the new color TV set provides the user with a very sharp detail and a very rich color.

Choose the correct option, according to the text.
Alternativas
Q461165 Inglês
Read the text below and answer the questions that follow.

Text:

How to get the most enjoyment from your
color TV set



Your new color TV incorporates a host of features designed to give you excellent performance. Besides, this model utilizes a highly sophisticated control microprocessor that can give you unprecedented convenience and control in the areas of picture adjustment, channel tuning, monitor operation, on-screen information, and remote control.

We therefore strongly urge that you read all of these instructions before using yourTV for the first time.

Installation

Antenna

Unless your TV is connected to a cable TV system, or to a centralized antenna system, a good outdoor color TV antenna is recommended for the best performance. However, if you are located in a strong signal area that is free from interference and ghost conditions (multipath), an indoor antenna may be sufficient. The two pole antenna packedwith this set is for your convenience only. It is not capable of providing you with the sharp detail and rich color that this televisionwas designed to display.

Location

Select an area where sunlight or bright indoor illumination will not fall directly on the picture screen. Also, be sure that the location selected allows a free flow of air to and fromthe perforated back cover of the set.

Note

Never remove the back cover of the set. This can expose you to very high voltage and other hazards.

If the set does not operate properly, unplug it and call your dealer or service shop.

(Fonte: Color Television – Operating Instructions.)

The highly sophisticated controlmicroprocessor does NOT provide the users convenience and control in the area of:
Alternativas
Respostas
421: E
422: C
423: D
424: E
425: C
426: C
427: A
428: B
429: D
430: B
431: E
432: D
433: A
434: B
435: B
436: B
437: A
438: D
439: C
440: D