Which of the following devices form a communication network?

Question

Options

• Arouter
• Bswitch
• Cfirewall
• Dserver

• A
  100% (31)

Explanation

All four options - routers, switches, firewalls, and servers - are correct because each plays a distinct role in forming a functional communication network. A router directs traffic between different networks (e.g., your home to the internet), a switch connects devices within the same local network and forwards data to the correct recipient, and a firewall controls what traffic is allowed in or out, securing the network. A server provides resources or services (files, web pages, email) that devices on the network request and consume - without servers, there would be little reason to have a network at all.

There are no "distractors" here - the question tests whether students recognize that a network is not just transmission hardware (routers and switches) but also includes security infrastructure (firewall) and the endpoints providing services (server).

Memory tip: Think of a network like a secured office building - the router is the address system directing mail to the right floor, the switch is the internal mail clerk routing it to the right desk, the firewall is the security guard at the entrance, and the server is the file room everyone needs access to. All four must exist for the building to function.

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