Palo Alto Networks (PANW) Certified Cybersecurity Entry-level Technician (PCCET) Practice Exam

Which network technology is used for WANs?

1. Ethernet

2. Token-ring

3. Digital subscriber line (DSL)

4. FDDI

The correct answer is: Digital subscriber line (DSL)

Digital Subscriber Line (DSL) is a widely recognized technology used for Wide Area Networks (WANs) because it enables high-speed internet access over traditional telephone lines. DSL utilizes existing copper telephone infrastructure, allowing for a simultaneous voice and data connection—a critical feature for WANs that often require both functionalities. The significance of DSL in WAN configurations lies in its ability to provide broadband connectivity over considerable distances, making it a suitable solution for connecting geographically dispersed locations. It's capable of supporting a range of services, including internet access and data transmission, which are essential for enterprises that rely on WANs for communication and data sharing across different sites. In contrast, Ethernet is predominantly associated with Local Area Networks (LANs), as it typically operates over shorter distances within a single building or campus. Token Ring is an older network technology that also primarily relates to LANs and doesn't fit the WAN category. Similarly, Fiber Distributed Data Interface (FDDI), while capable of high-speed data transfer, is generally more suited for LANs and specific enterprise environments rather than the broader scope required for WAN applications. DSL stands out for its practicality in real-world applications, enabling businesses to maintain robust and efficient WAN operations.