D413 ITEC 3201 Telecomm & Wireless Communications LATEST COMPLETE FA GUIDE 2024 1. Multiple Choice: Which frequency band is commonly used for 5G network services? a) 450 -470 MHz b) 600 -700 MHz c) 3.3 -3.8 GHz d) 26 -28 GHz Answer : c) 3.3 -3.8 GHz Rationale: The 3.3 -3.8 GHz band is widely allocated for 5G networks due to its optimal balance between coverage and capacity. 2. True/False: In wireless communication, the term "MIMO" stands for Multiple Input, Multiple Output. Answer : True Rationale: MIMO indeed stands for Multiple Input, Multiple Output, which is a method for multiplying the capacity of a radio link using multiple transmission and receiving antennas. 3. Fill -in-the-Blank: The _______ effect causes the signal to spread out and potentially interfere with other transmissions in wireless communications. Answer : Doppler Rationale: The Doppler effect refers to the change in frequen cy or wavelength of a wave in relation to an observer moving relative to the wave source. It can cause spreading of the signal in wireless communications. 4. Multiple Choice: What is the primary purpose of a Handover in mobile communication? a) To tran sfer a call from one frequency to another b) To charge the phone's battery faster c) To transfer an ongoing call or data session from one cell to another d) To improve the audio quality of a call Answer : c) To transfer an ongoing call or data s ession from one cell to another Rationale: Handover is essential in mobile communications to maintain a call or data session when the user moves out of the coverage area of one cell and into another. 5. True/False: Orthogonal Frequency -Division Multipl exing (OFDM) is a digital modulation technique used in Wi -Fi technology. Answer : True Rationale: OFDM is indeed used in Wi -Fi as well as other communication standards due to its efficiency in carrying large amounts of digital data over a radio wave. 6. Fill -in-the-Blank: _______ is the process by which a mobile device can obtain its location coordinates from satellite signals. Answer : Trilateration Rationale: Trilateration is the process used by GPS technology to determine the location of a dev ice by measuring its distance from multiple satellites.
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