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Q2322008
Redes de Computadores
Um determinado roteador está interligando diversos enlaces,
cada um rodando diferentes protocolos da camada de enlace
com diferentes MTUs. Ao receber um datagrama IPv4 de um
enlace, o roteador identificou que o enlace de saída tem uma
MTU menor do que o comprimento do datagrama IP.
Nesse cenário, o roteador deve:
Nesse cenário, o roteador deve:
Q2322007
Segurança da Informação
Renata presta serviço para a área de redes para a empresa B.
Renata identificou que muitos usuários ainda faziam uso do
telnet para efetuar login remoto e iniciou a implementação do
SSH. Este garante segurança no login remoto, além de oferecer
uma capacidade cliente/servidor mais genérica, e pode ser usado
para funções de rede como transferência de arquivos e e-mail.
Para a implementação correta, o SSH faz uso de vários
protocolos.
De forma a multiplexar o túnel encriptado para diversos canais lógicos existentes, Renata deverá usar o protocolo:
De forma a multiplexar o túnel encriptado para diversos canais lógicos existentes, Renata deverá usar o protocolo:
Q2322006
Segurança da Informação
O Ataque “Ping da morte" é um ataque de negação de serviço
(DoS) em que o invasor visa interromper uma máquina alvo
enviando um pacote maior que o tamanho máximo permitido,
fazendo com que a máquina visada trave ou falhe. De forma a
evitar esse ataque, o Departamento de Segurança do Tribunal de
Contas do Estado de São Paulo (TCE SP) resolveu bloquear as
requisições de PING, impedindo que outro computador utilize
esse comando para obter informações sobre o servidor.
Para isso, efetuará o bloqueio com o Iptables.
Sabendo-se que a interface do servidor é eth0, o comando de aplicação da regra de bloqueio no IPTABLES é:
Sabendo-se que a interface do servidor é eth0, o comando de aplicação da regra de bloqueio no IPTABLES é:
Q2322005
Segurança da Informação
Wallace, servidor público no Tribunal de Contas do Estado de São
Paulo (TCE SP), está implementando um sistema de controle de
acesso baseado em políticas. No Linux, o módulo que faz essa
implementação é o SELinux. Wallace está atribuindo rótulos de
segurança a cada processo e recursos do sistema. Após a
aplicação das diretrizes de segurança, Wallace elaborou um
relatório com o conteúdo das políticas implementadas e com
seus benefícios para a segurança do sistema operacional.
Dentre os benefícios, tem-se que:
Dentre os benefícios, tem-se que:
Q2322004
Segurança da Informação
Martin é um criptoanalista contratado pela empresa Z para
identificar o ataque ocorrido em sua rede. Após um tempo,
Martin tinha as seguintes informações:
- algoritmo de encriptação
- texto cifrado
- mensagem de texto claro escolhida pelo criptoanalista, com seu respectivo texto cifrado produzido pela chave secreta
- texto cifrado escolhido pelo criptoanalista, com seu respectivo texto claro decriptado produzido pela chave secreta
Com base nas informações obtidas pelo criptoanalista, pode-se identificar o ataque como:
- algoritmo de encriptação
- texto cifrado
- mensagem de texto claro escolhida pelo criptoanalista, com seu respectivo texto cifrado produzido pela chave secreta
- texto cifrado escolhido pelo criptoanalista, com seu respectivo texto claro decriptado produzido pela chave secreta
Com base nas informações obtidas pelo criptoanalista, pode-se identificar o ataque como:
Q2322003
Noções de Informática
Durante uma verificação de rotina, a Divisão de Segurança da
Informação do Tribunal de Contas do Estado de São Paulo (TCE
SP) identificou um ataque por vírus e que este estava ocorrendo e
efetuando o apagamento de arquivos no servidor. Em virtude da
forma de backup utilizada, notou-se também que os mesmos
arquivos também eram apagados no backup. Logo, o TCE SP
decidiu trocar o tipo de backup usado pelo backup em nuvem. O
tipo de backup executado pelo TCE SP, antes da implementação
do backup em nuvem, é o backup:
Q2322002
Inglês
Texto associado
Is It Live, or Is It Deepfake?
It’s been four decades since society was in awe of the quality of
recordings available from a cassette recorder tape. Today we
have something new to be in awe of: deepfakes. Deepfakes
include hyperrealistic videos that use artificial intelligence (AI) to
create fake digital content that looks and sounds real. The word is
a portmanteau of “deep learning” and “fake.” Deepfakes are
everywhere: from TV news to advertising, from national election
campaigns to wars between states, and from cybercriminals’
phishing campaigns to insurance claims that fraudsters file. And
deepfakes come in all shapes and sizes — videos, pictures, audio,
text, and any other digital material that can be manipulated with
AI. One estimate suggests that deepfake content online is
growing at the rate of 400% annually.
There appear to be legitimate uses of deepfakes, such as in the
medical industry to improve the diagnostic accuracy of AI
algorithms in identifying periodontal disease or to help medical
professionals create artificial patients (from real patient data) to
safely test new diagnoses and treatments or help physicians
make medical decisions. Deepfakes are also used to entertain, as
seen recently on America’s Got Talent, and there may be future
uses where deepfake could help teachers address the personal
needs and preferences of specific students.
Unfortunately, there is also the obvious downside, where the
most visible examples represent malicious and illegitimate uses.
Examples already exist.
Deepfakes also involve voice phishing, also known as vishing,
which has been among the most common techniques for
cybercriminals. This technique involves using cloned voices over
the phone to exploit the victim’s professional or personal
relationships by impersonating trusted individuals. In March
2019, cybercriminals were able to use a deepfake to fool the CEO
of a U.K.-based energy firm into making a US$234,000 wire
transfer. The British CEO who was victimized thought that the
person speaking on the phone was the chief executive of the
firm’s German parent company. The deepfake caller asked him to
transfer the funds to a Hungarian supplier within an hour,
emphasizing that the matter was extremely urgent. The
fraudsters used AI-based software to successfully imitate the
German executive’s voice. […]
What can be done to combat deepfakes? Could we create
deepfake detectors? Or create laws or a code of conduct that
probably would be ignored?
There are tools that can analyze the blood flow in a subject’s face
and then compare it to human blood flow activity to detect a
fake. Also, the European Union is working on addressing
manipulative behaviors.
There are downsides to both categories of solutions, but clearly
something needs to be done to build trust in this emerging and
disruptive technology. The problem isn’t going away. It is only
increasing.
Authors
Nit Kshetri, Bryan School of Business and Economics, University of
North Carolina at Greensboro, Greensboro, NC, USA
Joanna F. DeFranco, Software Engineering, The Pennsylvania
State University, Malvern, PA, USA
Jeffrey Voas, NIST, USA
Adapted from:
https://www.computer.org/csdl/magazine/co/2023/07/10154234/
1O1wTOn6ynC
The aim of the last paragraph is to:
Q2322001
Inglês
Texto associado
Is It Live, or Is It Deepfake?
It’s been four decades since society was in awe of the quality of
recordings available from a cassette recorder tape. Today we
have something new to be in awe of: deepfakes. Deepfakes
include hyperrealistic videos that use artificial intelligence (AI) to
create fake digital content that looks and sounds real. The word is
a portmanteau of “deep learning” and “fake.” Deepfakes are
everywhere: from TV news to advertising, from national election
campaigns to wars between states, and from cybercriminals’
phishing campaigns to insurance claims that fraudsters file. And
deepfakes come in all shapes and sizes — videos, pictures, audio,
text, and any other digital material that can be manipulated with
AI. One estimate suggests that deepfake content online is
growing at the rate of 400% annually.
There appear to be legitimate uses of deepfakes, such as in the
medical industry to improve the diagnostic accuracy of AI
algorithms in identifying periodontal disease or to help medical
professionals create artificial patients (from real patient data) to
safely test new diagnoses and treatments or help physicians
make medical decisions. Deepfakes are also used to entertain, as
seen recently on America’s Got Talent, and there may be future
uses where deepfake could help teachers address the personal
needs and preferences of specific students.
Unfortunately, there is also the obvious downside, where the
most visible examples represent malicious and illegitimate uses.
Examples already exist.
Deepfakes also involve voice phishing, also known as vishing,
which has been among the most common techniques for
cybercriminals. This technique involves using cloned voices over
the phone to exploit the victim’s professional or personal
relationships by impersonating trusted individuals. In March
2019, cybercriminals were able to use a deepfake to fool the CEO
of a U.K.-based energy firm into making a US$234,000 wire
transfer. The British CEO who was victimized thought that the
person speaking on the phone was the chief executive of the
firm’s German parent company. The deepfake caller asked him to
transfer the funds to a Hungarian supplier within an hour,
emphasizing that the matter was extremely urgent. The
fraudsters used AI-based software to successfully imitate the
German executive’s voice. […]
What can be done to combat deepfakes? Could we create
deepfake detectors? Or create laws or a code of conduct that
probably would be ignored?
There are tools that can analyze the blood flow in a subject’s face
and then compare it to human blood flow activity to detect a
fake. Also, the European Union is working on addressing
manipulative behaviors.
There are downsides to both categories of solutions, but clearly
something needs to be done to build trust in this emerging and
disruptive technology. The problem isn’t going away. It is only
increasing.
Authors
Nit Kshetri, Bryan School of Business and Economics, University of
North Carolina at Greensboro, Greensboro, NC, USA
Joanna F. DeFranco, Software Engineering, The Pennsylvania
State University, Malvern, PA, USA
Jeffrey Voas, NIST, USA
Adapted from:
https://www.computer.org/csdl/magazine/co/2023/07/10154234/
1O1wTOn6ynC
The word “downsides” in “There are downsides to both
categories” (7th paragraph) means:
Q2322000
Inglês
Texto associado
Is It Live, or Is It Deepfake?
It’s been four decades since society was in awe of the quality of
recordings available from a cassette recorder tape. Today we
have something new to be in awe of: deepfakes. Deepfakes
include hyperrealistic videos that use artificial intelligence (AI) to
create fake digital content that looks and sounds real. The word is
a portmanteau of “deep learning” and “fake.” Deepfakes are
everywhere: from TV news to advertising, from national election
campaigns to wars between states, and from cybercriminals’
phishing campaigns to insurance claims that fraudsters file. And
deepfakes come in all shapes and sizes — videos, pictures, audio,
text, and any other digital material that can be manipulated with
AI. One estimate suggests that deepfake content online is
growing at the rate of 400% annually.
There appear to be legitimate uses of deepfakes, such as in the
medical industry to improve the diagnostic accuracy of AI
algorithms in identifying periodontal disease or to help medical
professionals create artificial patients (from real patient data) to
safely test new diagnoses and treatments or help physicians
make medical decisions. Deepfakes are also used to entertain, as
seen recently on America’s Got Talent, and there may be future
uses where deepfake could help teachers address the personal
needs and preferences of specific students.
Unfortunately, there is also the obvious downside, where the
most visible examples represent malicious and illegitimate uses.
Examples already exist.
Deepfakes also involve voice phishing, also known as vishing,
which has been among the most common techniques for
cybercriminals. This technique involves using cloned voices over
the phone to exploit the victim’s professional or personal
relationships by impersonating trusted individuals. In March
2019, cybercriminals were able to use a deepfake to fool the CEO
of a U.K.-based energy firm into making a US$234,000 wire
transfer. The British CEO who was victimized thought that the
person speaking on the phone was the chief executive of the
firm’s German parent company. The deepfake caller asked him to
transfer the funds to a Hungarian supplier within an hour,
emphasizing that the matter was extremely urgent. The
fraudsters used AI-based software to successfully imitate the
German executive’s voice. […]
What can be done to combat deepfakes? Could we create
deepfake detectors? Or create laws or a code of conduct that
probably would be ignored?
There are tools that can analyze the blood flow in a subject’s face
and then compare it to human blood flow activity to detect a
fake. Also, the European Union is working on addressing
manipulative behaviors.
There are downsides to both categories of solutions, but clearly
something needs to be done to build trust in this emerging and
disruptive technology. The problem isn’t going away. It is only
increasing.
Authors
Nit Kshetri, Bryan School of Business and Economics, University of
North Carolina at Greensboro, Greensboro, NC, USA
Joanna F. DeFranco, Software Engineering, The Pennsylvania
State University, Malvern, PA, USA
Jeffrey Voas, NIST, USA
Adapted from:
https://www.computer.org/csdl/magazine/co/2023/07/10154234/
1O1wTOn6ynC
In the question “Or create laws or a code of conduct that
probably would be ignored?” (5th paragraph), the authors imply
that these laws and code of conduct may be:
Q2321999
Inglês
Texto associado
Is It Live, or Is It Deepfake?
It’s been four decades since society was in awe of the quality of
recordings available from a cassette recorder tape. Today we
have something new to be in awe of: deepfakes. Deepfakes
include hyperrealistic videos that use artificial intelligence (AI) to
create fake digital content that looks and sounds real. The word is
a portmanteau of “deep learning” and “fake.” Deepfakes are
everywhere: from TV news to advertising, from national election
campaigns to wars between states, and from cybercriminals’
phishing campaigns to insurance claims that fraudsters file. And
deepfakes come in all shapes and sizes — videos, pictures, audio,
text, and any other digital material that can be manipulated with
AI. One estimate suggests that deepfake content online is
growing at the rate of 400% annually.
There appear to be legitimate uses of deepfakes, such as in the
medical industry to improve the diagnostic accuracy of AI
algorithms in identifying periodontal disease or to help medical
professionals create artificial patients (from real patient data) to
safely test new diagnoses and treatments or help physicians
make medical decisions. Deepfakes are also used to entertain, as
seen recently on America’s Got Talent, and there may be future
uses where deepfake could help teachers address the personal
needs and preferences of specific students.
Unfortunately, there is also the obvious downside, where the
most visible examples represent malicious and illegitimate uses.
Examples already exist.
Deepfakes also involve voice phishing, also known as vishing,
which has been among the most common techniques for
cybercriminals. This technique involves using cloned voices over
the phone to exploit the victim’s professional or personal
relationships by impersonating trusted individuals. In March
2019, cybercriminals were able to use a deepfake to fool the CEO
of a U.K.-based energy firm into making a US$234,000 wire
transfer. The British CEO who was victimized thought that the
person speaking on the phone was the chief executive of the
firm’s German parent company. The deepfake caller asked him to
transfer the funds to a Hungarian supplier within an hour,
emphasizing that the matter was extremely urgent. The
fraudsters used AI-based software to successfully imitate the
German executive’s voice. […]
What can be done to combat deepfakes? Could we create
deepfake detectors? Or create laws or a code of conduct that
probably would be ignored?
There are tools that can analyze the blood flow in a subject’s face
and then compare it to human blood flow activity to detect a
fake. Also, the European Union is working on addressing
manipulative behaviors.
There are downsides to both categories of solutions, but clearly
something needs to be done to build trust in this emerging and
disruptive technology. The problem isn’t going away. It is only
increasing.
Authors
Nit Kshetri, Bryan School of Business and Economics, University of
North Carolina at Greensboro, Greensboro, NC, USA
Joanna F. DeFranco, Software Engineering, The Pennsylvania
State University, Malvern, PA, USA
Jeffrey Voas, NIST, USA
Adapted from:
https://www.computer.org/csdl/magazine/co/2023/07/10154234/
1O1wTOn6ynC
When the authors refer to the use of deepfake in education (2nd
paragraph), they state that ultimately teachers may find it:
Q2321998
Inglês
Texto associado
Is It Live, or Is It Deepfake?
It’s been four decades since society was in awe of the quality of
recordings available from a cassette recorder tape. Today we
have something new to be in awe of: deepfakes. Deepfakes
include hyperrealistic videos that use artificial intelligence (AI) to
create fake digital content that looks and sounds real. The word is
a portmanteau of “deep learning” and “fake.” Deepfakes are
everywhere: from TV news to advertising, from national election
campaigns to wars between states, and from cybercriminals’
phishing campaigns to insurance claims that fraudsters file. And
deepfakes come in all shapes and sizes — videos, pictures, audio,
text, and any other digital material that can be manipulated with
AI. One estimate suggests that deepfake content online is
growing at the rate of 400% annually.
There appear to be legitimate uses of deepfakes, such as in the
medical industry to improve the diagnostic accuracy of AI
algorithms in identifying periodontal disease or to help medical
professionals create artificial patients (from real patient data) to
safely test new diagnoses and treatments or help physicians
make medical decisions. Deepfakes are also used to entertain, as
seen recently on America’s Got Talent, and there may be future
uses where deepfake could help teachers address the personal
needs and preferences of specific students.
Unfortunately, there is also the obvious downside, where the
most visible examples represent malicious and illegitimate uses.
Examples already exist.
Deepfakes also involve voice phishing, also known as vishing,
which has been among the most common techniques for
cybercriminals. This technique involves using cloned voices over
the phone to exploit the victim’s professional or personal
relationships by impersonating trusted individuals. In March
2019, cybercriminals were able to use a deepfake to fool the CEO
of a U.K.-based energy firm into making a US$234,000 wire
transfer. The British CEO who was victimized thought that the
person speaking on the phone was the chief executive of the
firm’s German parent company. The deepfake caller asked him to
transfer the funds to a Hungarian supplier within an hour,
emphasizing that the matter was extremely urgent. The
fraudsters used AI-based software to successfully imitate the
German executive’s voice. […]
What can be done to combat deepfakes? Could we create
deepfake detectors? Or create laws or a code of conduct that
probably would be ignored?
There are tools that can analyze the blood flow in a subject’s face
and then compare it to human blood flow activity to detect a
fake. Also, the European Union is working on addressing
manipulative behaviors.
There are downsides to both categories of solutions, but clearly
something needs to be done to build trust in this emerging and
disruptive technology. The problem isn’t going away. It is only
increasing.
Authors
Nit Kshetri, Bryan School of Business and Economics, University of
North Carolina at Greensboro, Greensboro, NC, USA
Joanna F. DeFranco, Software Engineering, The Pennsylvania
State University, Malvern, PA, USA
Jeffrey Voas, NIST, USA
Adapted from:
https://www.computer.org/csdl/magazine/co/2023/07/10154234/
1O1wTOn6ynC
In the 1st sentence (“It’s been four decades since society was in
awe of the quality of recordings available from a cassette recorder
tape”), the reaction of society is described as being one of:
Q2321997
Inglês
Texto associado
Is It Live, or Is It Deepfake?
It’s been four decades since society was in awe of the quality of
recordings available from a cassette recorder tape. Today we
have something new to be in awe of: deepfakes. Deepfakes
include hyperrealistic videos that use artificial intelligence (AI) to
create fake digital content that looks and sounds real. The word is
a portmanteau of “deep learning” and “fake.” Deepfakes are
everywhere: from TV news to advertising, from national election
campaigns to wars between states, and from cybercriminals’
phishing campaigns to insurance claims that fraudsters file. And
deepfakes come in all shapes and sizes — videos, pictures, audio,
text, and any other digital material that can be manipulated with
AI. One estimate suggests that deepfake content online is
growing at the rate of 400% annually.
There appear to be legitimate uses of deepfakes, such as in the
medical industry to improve the diagnostic accuracy of AI
algorithms in identifying periodontal disease or to help medical
professionals create artificial patients (from real patient data) to
safely test new diagnoses and treatments or help physicians
make medical decisions. Deepfakes are also used to entertain, as
seen recently on America’s Got Talent, and there may be future
uses where deepfake could help teachers address the personal
needs and preferences of specific students.
Unfortunately, there is also the obvious downside, where the
most visible examples represent malicious and illegitimate uses.
Examples already exist.
Deepfakes also involve voice phishing, also known as vishing,
which has been among the most common techniques for
cybercriminals. This technique involves using cloned voices over
the phone to exploit the victim’s professional or personal
relationships by impersonating trusted individuals. In March
2019, cybercriminals were able to use a deepfake to fool the CEO
of a U.K.-based energy firm into making a US$234,000 wire
transfer. The British CEO who was victimized thought that the
person speaking on the phone was the chief executive of the
firm’s German parent company. The deepfake caller asked him to
transfer the funds to a Hungarian supplier within an hour,
emphasizing that the matter was extremely urgent. The
fraudsters used AI-based software to successfully imitate the
German executive’s voice. […]
What can be done to combat deepfakes? Could we create
deepfake detectors? Or create laws or a code of conduct that
probably would be ignored?
There are tools that can analyze the blood flow in a subject’s face
and then compare it to human blood flow activity to detect a
fake. Also, the European Union is working on addressing
manipulative behaviors.
There are downsides to both categories of solutions, but clearly
something needs to be done to build trust in this emerging and
disruptive technology. The problem isn’t going away. It is only
increasing.
Authors
Nit Kshetri, Bryan School of Business and Economics, University of
North Carolina at Greensboro, Greensboro, NC, USA
Joanna F. DeFranco, Software Engineering, The Pennsylvania
State University, Malvern, PA, USA
Jeffrey Voas, NIST, USA
Adapted from:
https://www.computer.org/csdl/magazine/co/2023/07/10154234/
1O1wTOn6ynC
Based on the text, mark the statements below as true (T) or false (F).
( ) Deepfakes are circumscribed to certain areas of action.
( ) The sole aim of deepfake technology is to spread misinformation.
( ) Evidence shows that even high-ranking executives can be easy targets to vishing techniques.
The statements are, respectively:
( ) Deepfakes are circumscribed to certain areas of action.
( ) The sole aim of deepfake technology is to spread misinformation.
( ) Evidence shows that even high-ranking executives can be easy targets to vishing techniques.
The statements are, respectively:
Q2321990
Português
Todas as frases abaixo mostram uma função da linguagem
predominante; a frase em que predomina a função referencial, é:
Q2321989
Português
O radical grego logia tanto pode significar “linguagem” como
“estudo”; a opção em que esse radical mostra o significado de
“linguagem”, é:
Q2321988
Português
A pontuação é um elemento importante na organização sintática
das frases; a opção abaixo em que todos os sinais de pontuação
são vistos como de uso adequado, é:
Q2321987
Português
Observe o pequeno texto a seguir, copiado de uma antiga
reportagem do jornal O Globo (13/03/1977):
“A cada ano, 600 mil novos casos de câncer são registrados nos Estados Unidos, e mais de 350 mil pessoas morrem em consequência da doença, em suas várias formas. O câncer, como moléstia fatal, só é superado pelas enfermidades do coração, a maior causa de mortalidade entre os norte-americanos. As autoridades e entidades médicas responsáveis pelo combate ao câncer afirmam que algum progresso tem sido conseguido quanto ao controle da doença. Revelam, por exemplo, que apenas um em cada cinco doentes com câncer se curava na década de 30, enquanto hoje essa taxa é de um para cada três. Contudo, muitas das estatísticas baseiam-se em dados retirados de um pequeno número de hospitais, que não seriam representativos da situação em toda a nação”.
Sobre a composição e a estruturação desse texto, é correto afirmar que:
“A cada ano, 600 mil novos casos de câncer são registrados nos Estados Unidos, e mais de 350 mil pessoas morrem em consequência da doença, em suas várias formas. O câncer, como moléstia fatal, só é superado pelas enfermidades do coração, a maior causa de mortalidade entre os norte-americanos. As autoridades e entidades médicas responsáveis pelo combate ao câncer afirmam que algum progresso tem sido conseguido quanto ao controle da doença. Revelam, por exemplo, que apenas um em cada cinco doentes com câncer se curava na década de 30, enquanto hoje essa taxa é de um para cada três. Contudo, muitas das estatísticas baseiam-se em dados retirados de um pequeno número de hospitais, que não seriam representativos da situação em toda a nação”.
Sobre a composição e a estruturação desse texto, é correto afirmar que:
Q2321986
Português
À frase “O candidato a chef saboreava o manjar que lhe fora
servido” foi acrescentado o termo “lenta e delicadamente”.
A opção em que esse acréscimo foi feito de forma inadequada, é:
A opção em que esse acréscimo foi feito de forma inadequada, é:
Q2321985
Português
Nas frases abaixo, foram feitas modificações na frase original de
forma, respectivamente, a ser criada uma oração reduzida e uma
forma nominalizada.
A opção em que as duas modificações foram feitas adequadamente, é:
A opção em que as duas modificações foram feitas adequadamente, é:
Q2321984
Português
Todas as frases abaixo tiveram o termo destacado colocado no
plural; a opção em que a reescritura obedece aos princípios da
norma culta, é:
Q2321981
Português
A frase em que o emprego ou ausência da preposição mostra
adequação e correção, é:
Conheça nossos planos