ATE6123 Topic 5

Which of the following is a characteristic of 1G mobile communication?

• Digital voice and SMS support

• Analog voice with limited mobility

• High-speed internet access

• Packet-based communication

What is the main goal of 4G LTE technology?

• Provide analog voice services

• Improve SMS delivery

• Enable mobile broadband with high data speeds and low latency

• Enhance only circuit-switched voice

What are the three main features of 5G technology?

• Analog transmission, wide coverage, low bandwidth

• SMS, voice calls, low speed data

• eMBB, mMTC, URLLC

• GSM, CDMA, TDMA

What is the main function of a Mobile Switching Center (MSC) in a cellular system?

• To manufacture mobile handsets

• To transmit signals directly to mobile users

• To connect mobiles to other networks

• To control battery power in handsets

What does the process of "handoff" enable in a cellular network?

• Charging of the mobile phone

• Changing the mobile's frequency

• Seamless call continuation while moving between cells

• Increasing the mobile's signal power

Which geometric shape is most commonly used to model cells in a cellular system?

• Circle

• Square

• Triangle

• Hexagon

What type of interference occurs when cells use the same set of frequencies?

• Thermal interference

• Co-channel interference

• Noise interference

• Multipath interference

What is the main function of sensors in an IoT system?

• Display results to the user

• Connect directly to mobile apps

• Collect live data from the environment

• Charge other devices

What is one major challenge associated with IoT?

• Lack of device variety

• Too few connected sensors

• Software simplicity

• Concern regarding data security and privacy

What is the function of a satellite in a communication system?

• Generates radio signals

• Acts as a relay station in space

• Stores and forwards only video signals

• Produces power for Earth stations