Daily Practice - GCSE Computer Science
Systems, data representation, networks, algorithms and programming.
11th November 2022
- 1Data Representation: Images, Sound and Compression
State one example of a file format that commonly uses lossy compression.
- 2Programming Practice: Writing and Refining Programs
Write the pseudocode header and body for a function called isAdult that takes one integer parameter called age and returns True if age is 18 or over.
- 3SQL and Data Handling
A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
- 4Trace Tables and Binary/Hex Conversions
Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
- 5Systems Architecture
A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
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