MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Wi-Fi uses radio waves to transmit information between your device and a router via frequencies. Two radio-wave frequencies can be used, depending on the amount of data being sent: 2.4 gigahertz and 5 gigahertz.

Detailed explanation-2: -Wireless communication is also referred to as Unguided Media or Unbounded transmission media. In this mode, no physical medium is required for the transmission of electromagnetic signals. In wireless communication, we can transfer our message through the air, water or vacuum i.e. Infrared, Radio wave, Microwave wave.

Detailed explanation-3: -Radio waves are used for wireless transmission of sound messages, or information, for communication, as well as for maritime and aircraft navigation. The information is imposed on the electromagnetic carrier wave as amplitude modulation (AM) or as frequency modulation (FM) or in digital form (pulse modulation).

Detailed explanation-4: -Wired transmission media includes twisted pair cable, Ethernet cable, coaxial cable and optical fibre whereas wireless transmission media includes microwave, radio wave, satellite, infrared, Bluetooth, WIFI etc. It includes cables i.e. Twisted pair cable, Ethernet cable, Coaxial cable and Optical fibre etc.

Detailed explanation-5: -RF is commonly used in the wireless communications industry to describe equipment using radio frequency waves to transmit sounds and data from one point to another.