問71
頻出度★★★
複数の IoT デバイスとそれらを管理する IoT サーバで構成される IoT システムにおける, エッジコンピューティングに関する記述として, 適切なものはどれか。
令和元年度 秋期 ITパスポート試験 問71
テクノロジ系ネットワーク › ネットワーク方式
This question's explanation and your answers so far.
解説
問 71
Incorrectア
Placing a replica of the database on another server and keeping the two always synchronized describes replication (redundancy, ensuring availability/fault tolerance), which is a concept distinct from edge computing that performs processing near the site.
- イ
正解 Edge computing is a method in which computers are placed near where data is generated, that is, near the group of IoT devices (the edge = the end of the network), and the processing is carried out there. Instead of gathering all the data at the IoT server (the cloud side) for processing, it performs preliminary processing, filtering, and immediate judgment closer to the source, thereby reducing the amount of data and processing sent to the server and so lowering the server load; and because it can respond on-site without waiting for a communication round trip, it improves real-time performance. Choice イ, which states exactly this characteristic, is correct.
Incorrectウ
Automatically optimizing the network configuration according to the communication load is a matter of SDN-style network control and optimization, which differs from the definition of edge computing that places processing at the edge (near the devices).
Incorrectエ
Operating with low power and running continuously for a long time on ordinary batteries describes low-power (low power consumption) design, which is unrelated to edge computing that locates the processing near the site.
ここがポイント
- Edge computing = a method that performs processing near the data source (IoT devices) in order to reduce server load and improve real-time performance.
- Distinguishing it from similar concepts: replication (redundancy), automatic network optimization, and low-power design are all different from edge computing.
用語