Computer Science 7517/2 June 2021

AQA A Level Computer science (7517) Jun 2021

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The exam assesses computer science concepts, including data representation, networking, relational databases, and assembly language. Topics include bitmap and vector graphic differences, thin-client computing advantages, bit rate and baud rate relationships, and Boolean logic circuit analysis. Relational database tasks cover SQL queries, normalization, and booking system design. Assembly language exercises include trace table completion, understanding instructions, and program purpose analysis. Networking focuses on IPv4 addressing, subnet masks, CSMA/CA with RTS/CTS, and topology identification. Additional topics include floating-point representation, Big Data challenges, MIDI for digital music, utility software, and processor performance optimization with cache memory. Emphasis is on problem-solving and practical applications.