MTEL Digital Literacy and Computer Science

Correct Response: B. Because a proxy server hides the user's Internet Protocol Address, it prevents others from accessing the user's computer. A is incorrect because there are many other malicious sites besides social media sites. C is incorrect because sending email attachments is only one of many vulnerabilities of unprotected use of public Wi-Fi. A proxy server can protect attachments as well as many other vulnerabilities. D is incorrect because viruses and malware can do damage before they are detected by a scan.