Yr13 A-Level Computer Science OCR: SLR 18 - 24

Matilda is designing a virtual city for a flight simulator. Which statement best describes why she should use abstraction in her design?

• To include every real-world detail such as street signs and building colors

• To focus on only the details that affect pilot training and remove unnecessary complexity

• To make the simulator identical to the real city at all times

• To reduce the number of airports available in the simulator

Max is using a driving simulator to practice navigating through a city. Which similarity to the real city is most important for helping Max find his way to a specific destination?

• Exact paint texture of buildings

• Presence of individual people on streets

• Road system layout

• Recent roadworks and construction sites

Imagine a team is creating a digital map of a city for a navigation app. Which pair lists differences you would expect between the digital map and the real city due to abstraction?

• Digital map has more airports; real city has fewer runways

• Digital map removes detailed street objects like bins and post boxes; real city includes them

• Digital map shows more recent building work than the real city

• Digital map uses higher texture detail than the real city

The diagram shows an abstracted conference venue layout with Hall 1, Hall 2, Hall 3, Hall 4, a Lobby, an Entrance, and stairs connecting halls. Which statement best describes abstraction in this context?

• Using exact measurements of each hall to plan seating

• Representing the venue with simplified shapes and labels to focus on essential structure

• Listing all possible equipment models for every room

• Recording every attendee’s personal details for each talk

Isabelle is investigating why a recent conference she organized was not successful, possibly due to the use of halls. Which four data items from the material are most relevant for her to collect? Choose the best option.

• Speaker biographies, catering menus, parking spaces, ticket prices

• Total number of delegates attending; numbers attending each talk; time of each talk; facilities needed and their availability

• Brand of projectors; color of hall walls; weather forecast; social media posts

• Building age; number of windows; flooring type; paint manufacturer

Which statement best explains why function libraries improve programming efficiency?

• They force programmers to write every routine from scratch.

• They provide pre-tested routines that can be reused, reducing development effort.

• They prevent code from running in different languages.

• They eliminate the need for any debugging at all.

Poppy and her team are developing several applications for their company. They want to ensure that all the menus and dialogs look and behave the same way in each application. Which benefit of using function libraries directly supports this goal?

• Less work for the programmer because routines are already written

• Pre-tested code

• Creates uniform interfaces

• Can use code compiled in a different programming language

Kiara is programming a robot to move forward in a pattern. She sets the robot's first two moves as n1 = 1 step and n2 = 0 steps, then programs it to output the number of steps (n2) each time it moves. If Kiara lets the robot continue for a large number of moves, which sequence of steps will the robot make?

• 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55

• 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89

• 0, 1, 2, 3, 5, 7, 12, 19, 31, 50

• 1, 2, 3, 5, 8, 13, 21, 34, 55, 89

Priya is planting flowers in her garden. Each week, she counts the number of flowers she planted in the previous two weeks and adds them together to decide how many to plant next. Which statement best describes how Priya decides the number of flowers to plant for the next week?

• Multiply the two previous numbers

• Add the two previous numbers

• Subtract the previous number from the current number

• Divide the current number by 2

Poppy is programming a robot to climb stairs, and she uses a recursive Function Fibonacci(Max) to determine the number of ways the robot can reach the top. Which conditions serve as the terminating base cases in her function?

• Max == 2 and Max == 3

• Max == 0 and Max == 1

• Max < 0 only

• Max > 1 only