CompTIA Network+ (N10-007) — Question 118

Which of the following is a network device that is responsible for separating collision domains?

Answer options

• A. Switch
• B. Router
• C. Hub
• D. Modem

Correct answer: A

Explanation

A Switch is designed to separate collision domains by creating a separate domain for each port, allowing for more efficient data transmission. A Router operates at a different layer and is responsible for directing traffic between different networks, not separating collision domains. A Hub simply broadcasts data to all ports, thus not separating collision domains, and a Modem connects a network to the internet but does not deal with collision domains.