問93
頻出度★★★
仮想移動体通信事業者 (MVNO) が行うものとして, 適切なものはどれか。
平成29年度 秋期 ITパスポート試験 問93
テクノロジ系ネットワーク › ネットワーク応用
This question's explanation and your answers so far.
解説
問 93
Incorrectア
Allocating radio frequencies (spectrum) for mobile communications is, in Japan, a task handled by administrative bodies such as the Ministry of Internal Affairs and Communications; it is not the role of an individual operator like an MVNO.
Incorrectイ
Owning a mobile communication network itself and providing services under its own brand describes an MNO (Mobile Network Operator, i.e., a so-called carrier). This is the exact opposite of an MVNO, which does not own its own facilities.
- ウ
正解 An MVNO (Mobile Virtual Network Operator) is a business that does not own wireless communication facilities such as a mobile phone network itself, but instead leases a network from another mobile network operator (MNO) and provides communication services under its own brand. Therefore, choice ウ — borrows another operator's mobile communication network and provides communication services under its own brand — is correct. So-called low-cost SIM (kakuyasu SIM) providers are examples of MVNOs.
Incorrectエ
Supporting an MVNO in running its business by providing services such as network procurement, billing system construction, and terminal development support is the role of an MVNE (Mobile Virtual Network Enabler), not the work of an MVNO itself.
ここがポイント
- An MVNO is a business that owns no communication facilities of its own and provides communication services under its own brand by leasing lines from an MNO (carrier) (e.g., a low-cost SIM provider).
- Distinguishing easily confused roles: frequency (spectrum) allocation = government (Ministry of Internal Affairs and Communications); owning one's own network = MNO; supporting an MVNO's business = MVNE.
用語