Câu hỏi:
22/03/2020 785Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.
As computer use becomes more common, the need for security is more important than ever. One of the greatest security threats in the online world is computer hacking. Computer hacking is the unauthorized access to a computer or network of computers. Hackers are people who illegally enter systems. They may alter or delete information, steal private information, or spread viruses that can damage or destroy files. But how exactly can a hacker get into a system to do these things?
Most hackers use information called protocols that are built into computer software. These protocols allow computers to interact with one another. Protocols are sort of like computer police officers. When a computer connects to another system, the protocols check to see if the access is valid. The protocols can also determine how much information can be shared between the two systems. Hackers can manipulate the protocols to get unlimited access to a computer system.
In fact, just the act of entering a computer network is considered hacking. This is commonly called passive hacking. Passive hackers get a rush from just being able to access a challenging system like a bank or military network. Another kind of hacker tries to do damage to a system. After hacking into systems, these hackers release viruses or alter, delete, or take information. Known as active hackers, they are, by far, the more dangerous of the two.
The easiest way to protect a system is with a good password, Long and unusual passwords are harder for hackers to guess. For even greater security, some online services now use “password-plus” systems. In this case, users first put in a password and then put in a second code that changes after the user accesses the site. Users either have special cards or devices that show them the new code to use the next time. Even if a hacker steals the password, they won't have the code. Or if the hacker somehow gets the code, they still don't know the password.
The word "unauthorized" in the first paragraph mostly means ______.
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Trả lời:
Đáp án B
Từ “unauthorized" trong đoạn đầu tiên có nghĩa là ____________.
A. lựa chọn
B. bất hợp pháp
C. chấp nhận được
D. bắt buộc
Từ đồng nghĩa: unauthorized (không được phép, không hợp pháp) = illegal
“Computer hacking is the unauthorized access to a computer or network of computers.” (Đột nhập máy tính là truy cập bất hợp pháp vào 1 máy tính hay 1 hệ thống máy tính).
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1:
Mark the letter A, B, C, or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
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Câu 2:
Mark the letter A, B, C, or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
The best hope of avoiding downmarket tabloid TV future lies in the pressure currently being put on the networks to clean up their act.
Câu 3:
Mark the letter A, B, C, or D to indicate the word(s) CLOSEST in meaning to the underlined word (s) in each of the following questions.
Sometimes, in order to get things done, you have to take the initiative.
Câu 4:
I have visited ______ Portugal but I have never been to ______ Netherlands.
Câu 5:
People often use the natural world as inspiration to design and invent new ______.
Câu 7:
In many countries, divorces ______ to rise because of long-standing conflicts.
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