100-140 Question 190
Select 4You are troubleshooting network performance issues in an office. Employees report that their devices experience slower connection speeds and intermittent connectivity when connected wirelessly compared to their wired connections. You need to determine the potential reasons for this difference. Which of the following are valid reasons why a WLAN connection might perform worse than a LAN connection in this scenario?
- A
Wi-Fi signals can suffer from interference from other devices, such as microwaves or Bluetooth devices.
- B
Wireless networks typically have higher latency than wired networks due to signal processing and transmission delays.
- C
LAN connections are more secure than WLAN connections, which can impact performance.
- D
The number of users connected to the WLAN access point can impact bandwidth availability and overall performance.
- E
Wired connections are less affected by physical obstacles, such as walls, compared to WLAN connections.
Show answer and explanation
Correct answers: A, B, D, E
Explanation
In this scenario, WLAN connections may perform worse than LAN connections due to factors such as interference, higher latency, shared bandwidth among multiple users, and physical obstacles. While security differences exist between LAN and WLAN, they do not directly account for the described performance issues. Understanding these distinctions is critical for troubleshooting network performance problems.
- A. Correct.
Wi-Fi signals are prone to interference from other devices operating on similar frequencies, such as microwaves or Bluetooth devices, which can degrade performance.
- B. Correct.
Wireless networks often have higher latency than wired networks because of the additional steps involved in signal transmission and processing.
- C. Incorrect.
While LAN connections are generally more secure than WLAN, security does not directly impact performance in this context.
- D. Correct.
The number of users connected to a WLAN access point can lead to congestion and reduced bandwidth per user, negatively affecting performance.
- E. Correct.
Wireless signals can be obstructed by physical barriers like walls, leading to reduced signal strength and performance, whereas wired connections are unaffected by such obstacles.