Questões de Concurso Para al-ms
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Q773096
Inglês
Texto associado
Para responder à questão, considere o texto a seguir:
On September 5th, 2011, Alexandra Elbakyan, a researcher from Kazakhstan, created Sci-Hub, a website that bypasses journal
paywalls, illegally providing access to nearly every scientific paper ever published immediately to anyone who wants it. The website
works in two stages, firstly by attempting to download a copy from the LibGen database of pirated content, which opened its doors to
academic papers in 2012 and now contains over 48 million scientific papers. The ingenious part of the system is that if LibGen does not
already have a copy of the paper, Sci-hub bypasses the journal paywall in real time by using access keys donated by academics lucky
enough to study at institutions with an adequate range of subscriptions. This allows Sci-Hub to route the user straight to the paper
through publishers such as JSTOR, Springer, Sage, and Elsevier. After delivering the paper to the user within seconds, Sci-Hub
donates a copy of the paper to LibGen for good measure, where it will be stored forever, accessible by everyone and anyone.
O pronome it, na 2a
linha do texto, refere-se a
Q773095
Inglês
Texto associado
Para responder à questão, considere o texto a seguir:
On September 5th, 2011, Alexandra Elbakyan, a researcher from Kazakhstan, created Sci-Hub, a website that bypasses journal
paywalls, illegally providing access to nearly every scientific paper ever published immediately to anyone who wants it. The website
works in two stages, firstly by attempting to download a copy from the LibGen database of pirated content, which opened its doors to
academic papers in 2012 and now contains over 48 million scientific papers. The ingenious part of the system is that if LibGen does not
already have a copy of the paper, Sci-hub bypasses the journal paywall in real time by using access keys donated by academics lucky
enough to study at institutions with an adequate range of subscriptions. This allows Sci-Hub to route the user straight to the paper
through publishers such as JSTOR, Springer, Sage, and Elsevier. After delivering the paper to the user within seconds, Sci-Hub
donates a copy of the paper to LibGen for good measure, where it will be stored forever, accessible by everyone and anyone.
Um sinônimo para nearly, conforme empregado no texto, é
Q773094
Segurança da Informação
O uso de certificação digital
Q773093
Segurança da Informação
Considere a figura abaixo.
A figura mostra o uso de hash criptográfico no processo de autenticação, que apresenta como vantagem o aumento de desempenho,
pois os algoritmos de criptografia assimétrica costumam ser lentos. As lacunas I e II da figura devem ser preenchidas,
correta e respectivamente, com
Q773092
Banco de Dados
Um famoso site de vendas sempre envia ao cliente que acabou de comprar um item X, ou o está analisando, a seguinte frase:
Pessoas que compraram o item X também compraram o Y. Para isso, o site deve estar aplicando a técnica de Data Mining
denominada
Conheça nossos planos