Niyihe ntego yintoki yo hepfo kumodoka? Ni ibihe bimenyetso biramutse bimenetse?
Uruhare rwamaboko yo hepfo kumodoka ni: gushyigikira umubiri, imashini itera; Kandi buffer kunyeganyega mugihe utwaye.
Niba ivunitse, ibimenyetso ni: kugabanya kugenzura no guhumurizwa; Kugabanya imikorere yumutekano (urugero kuyobora, gufata feri, nibindi); Ijwi ridasanzwe (ijwi); Ibipimo byerekana neza, gutandukana, no gutera ibindi bice kwambara cyangwa kwangirika (nko kwambara amapine); Hindukira kurukurikirane rwibibazo nko kugira ingaruka cyangwa no gukora nabi.