Practice Quiz

CompTIA Network+

Category - Management

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Jack is a network administrator at his organization. The computers in the finance department are connected to a hub. The employees in the finance department are complaining about very slow intermittent network and Internet access. On inspection, Jack finds that the activity LED on the hub sometimes turns orange. What is the most likely cause of the issue?
  1. One of the employee’s cables is disconnected from the hub.
  2. Collisions are occurring on the network due to electrical interference.
  3. The NIC drivers on the employees’ systems are outdated.
  4. The system resources on the employees’ computers are very low.
Explanation
Answer: B - The orange light on the hub is due to the collisions on the network.

Key Takeaway: Many times EMI causes interference on the network. Hubs have limited bandwidth if many users are connected simultaneously, sometimes leading to collisions. If there are collisions on the network, the activity LED turns orange. Under normal circumstances, the LED remains green.
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