ユーザーは、建物の特定の部分で断続的な Wi-Fi 接続が発生すると報告しています。ネットワーク管理者がこの問題のトラブルシューティングを行うときに、最初に確認する必要があるのは次のうちどれですか? (2 つ選択してください)。
正解:A,C
* A site survey is a process of analyzing the wireless environment and determining the optimal locations, configurations, and parameters for access points (APs). A site survey can help identify sources of interference, dead spots, signal strength, and coverage areas1.
* AP placement is the physical location of the APs in relation to the wireless clients, walls, ceilings, floors, and other obstacles. AP placement affects the signal quality, coverage, and performance of the wireless network2.
* The network administrator should check the site survey and the AP placement first when troubleshooting intermittent Wi-Fi connectivity issues, as these factors can directly impact the wireless signal and user experience.
* EIRP (Effective Isotropic Radiated Power) is the total power radiated by an antenna in a specific direction. EIRP is affected by the transmitter power, cable loss, and antenna gain3. EIRP is not the first thing to check, as it is usually configured according to the site survey and the regulatory standards.
* A captive portal is a web page that requires users to authenticate or accept some terms and conditions before accessing the wireless network. A captive portal can be used for security, marketing, or legal purposes. A captive portal is not the first thing to check, as it does not affect the wireless signal or connectivity, but only the access to the network resources.
* SSID (Service Set Identifier) is the name of a wireless network that is broadcasted by the APs. SSID assignment is the process of configuring the SSID on the APs and the wireless clients. SSID assignment is not the first thing to check, as it does not affect the wireless signal or connectivity, but only the identification of the network.
* AP association time is the time it takes for a wireless client to connect to an AP and establish a wireless link. AP association time is not the first thing to check, as it does not affect the wireless signal or
* connectivity, but only the initial connection process.
References:
* 1: Site Survey
* 2: AP Placement
* 3: EIRP
* : [Captive Portal]