62. A home user has purchased a subscription for a service that blocks malicious sites by preventing them from resolving correctly. Which of the following settings most likely needs to be changed on the clients router to enable this functionality?
Answer: A
Changing the DNS server setting is essential to enable the service that blocks malicious sites.
To enable the functionality of blocking malicious sites, the DNS server setting on the client's router must be changed to point to the service's DNS servers. This ensures that all DNS queries are resolved through the service designed to prevent access to harmful websites.
A) DNS server
This option is correct because the subscription service relies on altering the DNS resolution process. By changing the DNS server to the one provided by the service, the router will redirect DNS queries through the service, allowing it to effectively block harmful sites.
B) Port forwarding
Port forwarding is not relevant in this context as it deals with directing incoming traffic on specific ports to designated devices on a network. It does not affect DNS resolution, which is the core function needed for blocking malicious sites.
C) Perimeter network
A perimeter network, or DMZ, is used to enhance security by isolating an external-facing service from the internal network. Altering this does not influence DNS settings or the ability to block malicious sites, making it an incorrect choice.
D) Universal PnP
Universal Plug and Play (UPnP) is a protocol that allows devices on a network to discover each other and establish functional network services. It does not relate to DNS changes or blocking sites, so this option is incorrect.
E) DHCP server
While the DHCP server assigns IP addresses to devices on the network, it does not control DNS resolution. Changing this setting will not help in blocking malicious sites, making it an irrelevant option in this scenario.
Conclusion
Changing the DNS server is critical for the service to function as intended, as it directly affects how domain names are resolved. The other options do not relate to the DNS resolution process, which is why they are not suitable for enabling the desired security functionality. Therefore, adjusting the DNS server setting is the definitive action needed to block malicious sites effectively.