技術者が、時々充電に失敗するラップトップのトラブルシューティングを行っています。技術者はすでに電源アダプターをテストし、接続が良好であることを確認しました。問題の原因として最も考えられるのは次のうちどれですか?
正解:A
When a laptop sometimes fails to charge despite a good power adapter connection, the most likely issue is a defective DC jack. The DC jack, where the power adapter plugs into the laptop, can become loose or damaged over time, leading to intermittent or failed charging. Cooling fan issues, bad memory, or an overheating CPU would typically lead to different symptoms such as overheating, system crashes, or performance issues, not charging problems.
References:
* CompTIA A+ Core 1 Exam Objectives Section 3.0: Hardware