This English question involves literary analysis, grammar, or writing skills. The detailed response below provides a well-structured answer with supporting evidence and clear explanations.
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Here are the detailed solutions for the remaining questions: Question 9 : Communication b) (i) Compare analog and digital systems as means of transmitting information. Analog and digital systems differ fundamentally in how they represent and transmit information. • Analog systems represent information as continuous, varying physical quantities (e.g., voltage, current, frequency). The signal is a direct representation of the original information. They are more susceptible to noise and distortion during transmission, which can degrade the signal quality permanently. • Digital systems represent information as discrete values, typically binary (0s and 1s). The original information is converted into a sequence of bits. Digital signals are less susceptible to noise because noise can be easily filtered out, allowing for accurate signal reconstruction. They offer higher data rates, better security, and error correction capabilities. b) (ii) In modern communications systems using mobile phones, a base station, an MTSO and a PSTN are required. Give the full meanings of the abbreviations as used in communication systems and a function of each arm in mobile communication systems. Here are the full meanings and functions: • Base Station (BS) Full Meaning: A radio transceiver that forms part of a cellular network. Function: It handles radio communication with mobile phones within its geographical area (cell). It transmits and receives radio signals to and from mobile devices and relays these signals to the Mobile Telephone Switching Office (MTSO). • MTSO (Mobile Telephone Switching Office) Full Meaning: Mobile Telephone Switching Office (also commonly known as Mobile Switching Center - MSC). Function: This is the central switching point for mobile calls. It connects calls between mobile users, and between mobile users and the Public Switched Telephone Network (PSTN). It also manages call setup, routing, and handoffs (transferring a call from one base station to another as a mobile user moves). • PSTN (Public Switched Telephone Network) Full Meaning: Public Switched Telephone Network. Function: This is the global network of traditional telephone lines, cables, and switching centers that provides voice communication services to fixed-line telephones. In a mobile communication system, the MTSO connects mobile calls to the PSTN to allow communication with landline phones and other mobile networks. Drop the next question.