One way to protect against a security threat to a computer system is to Avoid external links with inconsistent URLs.
<h3>What is malware?</h3>
Malware is any programme that is purposely designed to disrupt a computer, server, client, or computer network, leak private information, obtain unauthorised access to information or systems, deny users access to information, or otherwise interfere with the user's computer security and privacy.
One way to protect against a security threat to a computer system is to Avoid external links with inconsistent URLs. The reason for this is that such links may contain malware or spyware.
Learn more about Malware:
brainly.com/question/14276107
#SPJ1
<u>Networks were originally used as a government weapon 61 years ago</u> to <u>communicate information</u> such as data and research. However, individual networks were eventually discontinued by the government and made open to the public to use for things such as PAN, LAN, MAN, WAN, SAN, and so on.
<u>Our internet today is capable of communicating with bilions of computers.</u> This is possible due to your modem using radio wave-like speeds to connect to your ISP. Your ISP then connects to a larger network, which is connecting to thousands of other networks. You see, <u>the internet is just a large network of networks that are connected through very fast radiowaves</u>. However, it is not just a single network being used anymore; it's thousands of them. The term, "internet" was used to describe this large selection of networks. In short, <u>B</u><u> would be incorrect. </u>
The worldwide web is a protocol used by the internet to connect to select websites favourably from whoever's using it. This obviously would not define the network, as this is something that's used by it. Furthermore, <u>A</u><u> would not be correct.</u>
As described already, the network was a selection of computers used to communicate information to each other. <u>C </u><u>would not be correct </u>as it states that there is only one computer being used.
Explanation:
1) the quality of purchased good may be low
2) there might me fraud and cheaters
3) it might be risky
4) we may not get our orders on time
Answer:d) Mono-alphabetic substitution rules
Explanation: Poly-alphabetic cipher is the cryptography that is done by using the many alphabets in substitutional way. They are supposed to have a good security because they use cipher text alphabets for the encryption and then decrypts it.
Substitution of the alphabets is done by the rule of the mono-alphabetic substitution rules.Other given options are incorrect because they are not used in the cryptography of the alphabetic cipher. Thus option (d) is the correct answer.