Magna Concursos

Foram encontradas 105 questões.

663478 Ano: 2021
Disciplina: Inglês (Língua Inglesa)
Banca: QUADRIX
Orgão: CRT-1
Provas:

Brazilian government confirms ransomware attack on

National Treasury

The Ministry of Economy of the Government of Brazil announced that the internal network of the National Treasury was impacted by a ransomware attack. According to the Ministry, the ransomware attack was discovered on Friday night, but it is not known when the intrusion first took place. At present, the ransomware attack is being investigated by cyber security specialists from the National Treasury Secretariat and the Digital Government Secretariat.

On Friday night (13) a ransomware attack on the internal network of the National Treasury Secretariat was identified. Containment measures were immediately applied and the Federal Police called.

“In this first stage, it was evaluated that the action did not damage the structuring systems of the National Treasury Secretariat, such as the Integrated Financial Administration System (SIAFI) and those related to Public Debt. Sanitary measures are being taken. New information on the subject will be disclosed in a timely manner and with due transparency”, the Ministry said.

In recent times, a number of federal institutions in Brazil have been targeted by ransomware actors. For instance, in November last year, a ransomware attack struck Brazil’s Superior Court of Justice, enabling hackers to infiltrate the network and forcing authorities to shut down the network.

In June, Brazil’s largest medical diagnostics company Grupo Fleury also suffered a debilitating ransomware that forced it to take systems offline and initiate restoration operations. Bleeping Computer reported that the firm suffered a REvil ransomware attack, with the REvil gang demanding as much as $5 million in cryptocurrency. It is not known if a ransom was ultimately paid.

Internet: <https://www.teiss.co.uk>.

Concerning the text, choose the correct alternative.

 

Provas

Questão presente nas seguintes provas
663477 Ano: 2021
Disciplina: Inglês (Língua Inglesa)
Banca: QUADRIX
Orgão: CRT-1
Provas:

What is the dark web? How to access it and what

you'll find? Deep web vs. dark web: What’s the difference?

The dark web is a part of the Internet that isn't indexed by search engines. You've no doubt heard talk of the “dark web” as a hotbed of criminal activity — and it is. Researchers Daniel Moore and Thomas Rid of King's College in London classified the contents of 2,723 live dark web sites over a five-week period in 2015 and found that 57% host illicit material.

You can buy credit card numbers, all manner of drugs, guns, counterfeit money, stolen subscription credentials, hacked Netflix accounts and software that helps you break into other people’s computers. Buy login credentials to a $50,000 Bank of America account, counterfeit $20 bills, prepaid debit cards, or a “lifetime” Netflix premium account. You can hire hackers to attack computers for you. You can buy usernames and passwords.

However, not everything is illegal; the dark web also has a legitimate side. For example, you can join a chess club or BlackBook, a social network described as the “the Facebook of Tor”.

The terms “deep web” and “dark web” are sometimes used interchangeably, but they are not the same. Deep web refers to anything on the Internet that is not indexed by and, therefore, accessible via a search engine like Google. Deep web content includes anything behind a paywall or requires sign-in credentials. It also includes any content that its owners have blocked web crawlers from indexing.

Medical records, fee-based content, membership websites, and confidential corporate web pages are just a few examples of what makes up the deep web. Estimates place the size of the deep web at between 96% and 99% of the Internet. Only a tinyD) portion of the Internet is accessible through a standard web browser — generally known as the “clear web”.

The dark web is a subset of the deep web that is intentionally hidden, requiring a specific browser — Tor — to access. No one really knows the size of the dark web, but most estimates put it at around 5% of the total Internet. Again, not all the dark web is used for illicit purposes despite its ominous-sounding name.

Internet: <https://www.csoonline.com> (adapted).

Based on the text, choose the incorrect alternative.

 

Provas

Questão presente nas seguintes provas
663476 Ano: 2021
Disciplina: Inglês (Língua Inglesa)
Banca: QUADRIX
Orgão: CRT-1
Provas:

What is the dark web? How to access it and what

you'll find? Deep web vs. dark web: What’s the difference?

The dark web is a part of the Internet that isn't indexed by search engines. You've no doubt heard talk of the “dark web” as a hotbed of criminal activity — and it is. Researchers Daniel Moore and Thomas Rid of King's College in London classified the contents of 2,723 live dark web sites over a five-week period in 2015 and found that 57% host illicit material.

You can buy credit card numbers, all manner of drugs, guns, counterfeit money, stolen subscription credentials, hacked Netflix accounts and software that helps you break into other people’s computers. Buy login credentials to a $50,000 Bank of America account, counterfeit $20 bills, prepaid debit cards, or a “lifetime” Netflix premium account. You can hire hackers to attack computers for you. You can buy usernames and passwords.

However, not everything is illegal; the dark web also has a legitimate side. For example, you can join a chess club or BlackBook, a social network described as the “the Facebook of Tor”.

The terms “deep web” and “dark web” are sometimes used interchangeably, but they are not the same. Deep web refers to anything on the Internet that is not indexed by and, therefore, accessible via a search engine like Google. Deep web content includes anything behind a paywall or requires sign-in credentials. It also includes any content that its owners have blocked web crawlers from indexing.

Medical records, fee-based content, membership websites, and confidential corporate web pages are just a few examples of what makes up the deep web. Estimates place the size of the deep web at between 96% and 99% of the Internet. Only a tiny portion of the Internet is accessible through a standard web browser — generally known as the “clear web”.

The dark web is a subset of the deep web that is intentionally hidden, requiring a specific browser — Tor — to access. No one really knows the size of the dark web, but most estimates put it at around 5% of the total Internet. Again, not all the dark web is used for illicit purposes despite its ominous-sounding name.

Internet: <https://www.csoonline.com> (adapted).

Based on the text presented, choose the correct alternative.

 

Provas

Questão presente nas seguintes provas
663475 Ano: 2021
Disciplina: Inglês (Língua Inglesa)
Banca: QUADRIX
Orgão: CRT-1
Provas:

Hacker auctioning database containing info on 92m

Brazilian citizens

A cyber criminal is claiming to be in possession of a 16GB SQL database that contains personal data of up to 92 million Brazilian citizens. The database is up for auction on various restricted-access underground forums that are frequented by experts in the field.

Information about the auctioning of the massive database was obtained by Bleeping Computer that noted that the database may contain a lot of information concerning the entire tax-paying population of Brazil, virtually making the database a gold mine for hackers who exploit such databases for purposes such as phishing, credential-stuffing, identity theft, and account takeover.

The auctioneer, using the alias X4Crow, is claiming on restricted underground forums that personal information of Brazilian citizens stored in the database includes names, dates of birth, taxpayer IDs, gender, and mother’s names. Using any one of these parameters, they can find out information available about specific persons based on information available in Brazilian national identification documents such as driver’s licenses or ID cards.

“The potential exposure of such a large database of data is worrying, and shows that cybercriminals are becoming more and more motivated by the potential monetary gain of selling personal identifiable information – which has become a kind of currency on the dark market”, says Paul Edon, senior director, technical services at Tripwire.

“Organisations and governmental bodies need to consider going above and beyond the security measures recommended as standard practice, or they will find themselves unprepared. When retaining this kind of data it is critical to choose an encryption solution that not only protects the database instances but also provides protection for data in transit and at rest”, he adds.

Internet: <https://www.teiss.co.uk>.

Concerning the text, choose the correct alternative.

 

Provas

Questão presente nas seguintes provas
663474 Ano: 2021
Disciplina: Engenharia Mecânica
Banca: QUADRIX
Orgão: CRT-1
Provas:

Assinale a alternativa que apresenta o grau de proteção a ser especificado para um motor elétrico totalmente protegido contra poeiras e jatos de água vindos de todas as direções.

 

Provas

Questão presente nas seguintes provas
663473 Ano: 2021
Disciplina: Engenharia Mecânica
Banca: QUADRIX
Orgão: CRT-1
Provas:

Assinale a alternativa que apresenta o valor da rotação, em rpm, de um motor de quatro polos que opera em uma frequência nominal de 60 Hz.

 

Provas

Questão presente nas seguintes provas
663472 Ano: 2021
Disciplina: Engenharia Mecânica
Banca: QUADRIX
Orgão: CRT-1
Provas:

Durante a manutenção periódica de um veículo, a inspeção das velas revelou uma folga entre os eletrodos, que estava dentro do normal especificado, e pontas totalmente enegrecidas, cobertas com resíduos de carvão e com brilho oleoso e úmido. Com base nesse caso hipotético, assinale a alternativa que apresenta um possível diagnóstico.

 

Provas

Questão presente nas seguintes provas
663471 Ano: 2021
Disciplina: Engenharia Mecânica
Banca: QUADRIX
Orgão: CRT-1
Provas:

Enunciado 3370674-1

Considerando o desenho técnico de um projeto de componente mecânico acima apresentado, assinale a alternativa correta.

 

Provas

Questão presente nas seguintes provas
663470 Ano: 2021
Disciplina: Engenharia Mecânica
Banca: QUADRIX
Orgão: CRT-1
Provas:

Para obter a centelha de ignição no momento exato em que deverá ocorrer a combustão da mistura ar mais combustível, os motores de ciclo Otto dispõem de um sistema de ignição composto por diferentes componentes. Considerando que se trate de um sistema típico, assinale a alternativa correta.

 

Provas

Questão presente nas seguintes provas
663469 Ano: 2021
Disciplina: Engenharia Mecânica
Banca: QUADRIX
Orgão: CRT-1
Provas:

Acerca da comparação entre as principais características dos motores à gasolina e a diesel, operando nas mesmas condições, assinale a alternativa correta.

 

Provas

Questão presente nas seguintes provas