Related Questions

Why does the ionosphere of the Earth's atmosphere facilitate radio communication? i. The presence of ozone causes the reflection of radio waves to earth ii. Radio waves have a very long wavelength
A i only
B ii only
C both i & ii
D neither i nor ii
In radio transmission, the medium of transmission is ___________
A Space
B An antenna
C Cable
D None of the above
Which country hosted the fisrt ever G20 Digital Ministerial Meeting on Digital Ministerial on Digital Economy?
A Japan
B Germany
C Russia
D France
Computers cannot communicate with each other directly over telephone lines because they use digital pulses whereas telephone lines use analog sound frequencies. What is the name of the device which permits digital to analog conversion at the start of a long distance transmission?
A Interface
B Modem
C Attenuation
D Teleprocessor
E None of the above
What frequency range is used for TV transmission and low power microwave applications?
A Very Low Frequency : 3 kHz to 30 kHz
B Medium Frequency : 300 kHz to 3 MHz
C Ultra High Frequency : 300 MHz to 3000 MHz
D Super High Frequency : 3000 MHz to 30000 MHz
E None of the above
কোনো খেলার সরাসরি সম্প্রচারের ডেটা ট্রান্সমিট হবার প্রক্রিয়া- (i) Broadcast Transmission (ii) Duplex Transmission (iii) Simplex Mode Transmission নিচের কোনটি সঠিক?
A i ও ii
B i ও iii
C ii ও iii
D i ii ও iii
Which digital currency, introduced in 2009 by an anonymous person or group of people using the pseudonym Satoshi Nakamoto, is often called 'digital gold'?
A Ethereum
B Litecoin
C Bitcoin
D Ripple (XRP)
A retailer buys a radio from the wholesaler for TK.80. He then marks up the price by 25% and sales at a discount of 10% . What is his profit on the radio ?
A TK. 5
B TK. 10
C TK. 15
D TK.12
A retailer buys a radio from the wholesaler for $ 75.00. He then marks up the price by 1/3 and sells it at a discount of 20% what wa his profit on the radio ?
A $ 5.00
B $ 6.67
C $ 7.50
D $ 13.33
A retailer buys a radio from the wholesaler for $ 80.00 He then marks up the price by 1/2 and sells it at a discount of 20% What was his profit on the radio?
A $ 20.00
B $16.00
C $ 18.50
D $ 12.67

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