220-802 · Question #1027
220-802 Question #1027: Real Exam Question with Answer & Explanation
The correct answer is C: RF signal is not received from the WAP.. 802.11a operates on the 5 GHz frequency band, which has significantly shorter range and worse obstacle penetration than 2.4 GHz (used by 802.11b/g). In a 100-meter square office, the diagonal distance from corner to corner is approximately 141 meters - well beyond the typical ind
Question
Options
- A802.11a only supports ad hoc mode.
- BThe laptop NIC is faulty.
- CRF signal is not received from the WAP.
- DThe printer is not connected to the WAP.
Explanation
802.11a operates on the 5 GHz frequency band, which has significantly shorter range and worse obstacle penetration than 2.4 GHz (used by 802.11b/g). In a 100-meter square office, the diagonal distance from corner to corner is approximately 141 meters - well beyond the typical indoor range of 802.11a (~35 meters indoors). The user can connect to the printer in ad hoc mode because it is nearby, proving the NIC is functional. The issue is simply that the WAP's RF signal is too weak or non-existent at that distance. 802.11a does support infrastructure mode (not just ad hoc), so option A is false. The NIC works (proven by the printer connection). The printer's WAP connectivity is irrelevant to the user's Internet access issue.
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