Practice Quiz

CompTIA A+ 220-901

Category - Networking

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Jack reports that when the phone rings in his house, the wireless on his laptop becomes disconnected. Which of the following is a likely cause of this problem?
  1. The cordless phones are operating at 2.4 GHz, which interferes with wireless.
  2. The cordless phones are plugged into same outlet as the router.
  3. The cordless phones are operating at 5.8 GHz, which interferes with wireless.
  4. The cordless phones are plugged into the RJ11 jack.
Explanation
Answer: A - Wireless networks may function intermittently when a cordless phone is operating at 2.4 GHz in the proximity of the network.

Key Takeaway: To avoid wireless network interference from a cordless phone:

• Move the phone at least 50 feet away from the wireless network.
• Switch to a 5.8 GHz phone.
• Use a different channel on the 2.4 GHz phone that does not overlap with the Wi-Fi network.
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