Cisco Certified Network Associate (CCNA) 2026 – 400 Free Practice Questions to Pass the Exam

The correct answer is the Cisco ASA 5500 Series Security Appliances. This series is specifically designed to enhance security for VoIP and multimedia communications. It includes features that allow for deep inspection and secure signaling protocols crucial for VoIP applications, such as SIP (Session Initiation Protocol), which are essential in voice and video over IP environments.

This series also supports additional multimedia security measures to ensure that data integrity and confidentiality are maintained during transmission. It leverages advanced techniques like NAT traversal for VoIP traffic, thus allowing seamless communication while optimizing security settings.

While other options may include security features, they do not specifically cater to the multimedia and VoIP requirements to the same extent as ASA 5500 Series does. The Cisco Firewall Services Module, for example, is used in conjunction with routers or switches but lacks the dedicated VoIP focus. The Cisco PIX 500 Series, while a predecessor to ASA, does not provide the same level of VoIP and multimedia security capabilities. Likewise, Cisco IOS firewalls, though they offer basic security functions, do not include the robust features designed expressly for VoIP and multimedia streams that ASA appliances provide.