निम्नलिखित में से किस संचार माध्यम के लिए "लाइन-ऑफ़-विज़न" की आवश्यकता होती है? - Which of the following communication medium requires "line-of-sight"? - NimnLikhit Me Se Kis Sanchar Madhyam Ke Liye " Line - of - vision " Ki Aavashyakta Hoti Hai ? Computer Quiz in hindi, question answers in hindi pdf questions in hindi, Know About Computer Quiz online test Computer Quiz notes in hindi quiz book