Which of the following objectives does an evil twin achieve?

DNS poisoning refers to the manipulation of the Domain Name System to redirect users to malicious websites. While it is a significant threat, it does not specifically relate to the tactics employed by an evil twin, which focuses more on intercepting data through a fake network rather than altering DNS records.

ARP spoofing involves sending false Address Resolution Protocol messages to associate the attacker's MAC address with the IP address of a legitimate network device. Although ARP spoofing can complement an evil twin setup, it is not the main objective; rather, it is a technique that may be employed once users are connected to the rogue network.

Denial of service (DoS) attacks aim to disrupt the normal functioning of a service or network. An evil twin attack does not typically seek to deny service; its focus is on data interception from connected users. Thus, while DoS attacks are severe, they are unrelated to the primary aim of an evil twin.