IPA IP 2026 Question 59
A question IPA Japan published in 令和8年度 ITパスポート試験 公開問題 問59, translated into English. ITPEC is based on the same exams.
Which of the following is an appropriate function of WPA2 that is used in wireless LANs?
Explanation
It encrypts communication data — WPA2 is the security standard that protects wireless LAN traffic.
WPA2 (Wi-Fi Protected Access 2) encrypts the data sent between a terminal and the access point, with AES, so that radio traffic picked up by an outsider cannot be read. It also authenticates the terminals, with a shared passphrase (personal mode) or an authentication server (enterprise mode). It replaced WEP, whose encryption could be broken in a short time, and is being followed by WPA3.
Answer (c)
Why not others:
- •(a) — sending and receiving over several antennas at once to raise the speed is MIMO, part of the transmission standards such as IEEE 802.11n, not of WPA2
- •(b) — making the access point stealth (not announcing its SSID) is an access point setting, ESSID stealth
- •(d) — accepting only devices with registered MAC addresses is MAC address filtering, another access point setting
Key rule: WPA2 and WPA3 encrypt and authenticate wireless LAN traffic; ESSID stealth and MAC address filtering are separate, weaker settings, since SSIDs and MAC addresses can be picked up from the air.
Security · AI-written, may contain errors
This question comes from the past questions IPA Japan publishes, translated into English by ITPEC Practice. ITPEC Practice is an independent study tool and is not affiliated with IPA or ITPEC. See the original paper (PDF) or Report an issue.