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A-LevelAQA

Computer Science

Exam Questions

Data TypesNew User-Defined TypesNew Variable DeclarationNew Constant DeclarationNew Assignment StatementsNew Selection StatementsNew Iteration StatementsNew Definite IterationNew Indefinite IterationNew Nested SelectionNew Nested IterationNew Identifier NamingNew Arithmetic OperatorsNew Integer Division and ModNew Rounding and TruncationNew Relational OperatorsNew Boolean OperatorsNew Constants vs VariablesNew Named ConstantsNew String LengthNew String PositionNew SubstringsNew String ConcatenationNew Character ↔ CodeNew String Type ConversionsNew Random Number GenerationNew Exception HandlingNew Subroutines OverviewNew Procedures vs FunctionsNew Subroutine ParametersNew Returning ValuesNew Local VariablesNew Global VariablesNew Stack FramesNew RecursionNew Procedural ParadigmNew Structured ProgrammingNew Hierarchy ChartsNew Object-Oriented ConceptsNew Classes and ObjectsNew EncapsulationNew InheritanceNew Polymorphism and OverridingNew Aggregation vs CompositionNew OOP Access ModifiersNew Abstract / Virtual / Static MethodsNew UML Class DiagramsNew OOP Design PrinciplesNew

Breadth-First Search (BFS)New Depth-First Search (DFS)New BFS vs DFS Use CasesNew Pre-Order TraversalNew In-Order TraversalNew Post-Order TraversalNew Tree Traversal Use CasesNew Infix to RPN ConversionNew RPN to Infix ConversionNew RPN Evaluation ContextNew Linear SearchNew Binary SearchNew Binary Tree SearchNew Bubble SortNew Merge SortNew Dijkstra’s AlgorithmNew Shortest Path ApplicationsNew

Logic Problem SolvingNew Algorithm DefinitionNew Pseudocode ConstructsNew Hand Tracing AlgorithmsNew Pseudocode to CodeNew Representational AbstractionNew Generalisation and CategorisationNew Information HidingNew Procedural AbstractionNew Functional AbstractionNew Data AbstractionNew Problem ReductionNew DecompositionNew CompositionNew Automation (Models to Code)New FSMs Without OutputNew FSMs With Output (Mealy)New Set NotationNew Set ComprehensionNew Empty SetNew Finite vs Infinite SetsNew Countably Infinite SetsNew Set CardinalityNew Cartesian ProductNew Subsets and Proper SubsetsNew Set Operations (∪, ∩, )New Regular Expressions BasicsNew Regex Metacharacters (* + ? |)New Regex Grouping ( )New Regex ↔ FSM EquivalenceNew Regular LanguagesNew Backus–Naur Form (BNF)New Syntax DiagramsNew Production RulesNew Regular vs Context-Free LanguagesNew Comparing Algorithm EfficiencyNew Time vs Space ComplexityNew Big-O NotationNew Constant / Log / LinearNew Polynomial vs ExponentialNew Deriving Big-ONew Limits of ComputationNew Tractable vs Intractable ProblemsNew Heuristics for Intractable ProblemsNew Computable vs Non-Computable ProblemsNew Halting ProblemNew Turing Machine StructureNew Transition FunctionsNew State Transition DiagramsNew Hand-Tracing Turing MachinesNew Universal Turing Machine SignificanceNew

Natural NumbersNew IntegersNew Rational NumbersNew Irrational NumbersNew Real NumbersNew Ordinal NumbersNew Counting vs MeasurementNew Decimal (Base 10)New Binary (Base 2)New Hexadecimal (Base 16)New Base ConversionNew Hex as Binary ShorthandNew Bits and BytesNew Values Representable with n BitsNew Binary Prefixes (KiB, MiB, GiB, TiB)New Decimal Prefixes (kB, MB, GB, TB)New Unsigned BinaryNew Unsigned Binary RangeNew Binary AdditionNew Binary MultiplicationNew Two’s ComplementNew Two’s Complement RangeNew Two’s Complement SubtractionNew Fixed-Point BinaryNew Fixed-Point ConversionsNew Digit Character Codes vs BinaryNew ASCIINew UnicodeNew Parity BitsNew Majority VotingNew ChecksumsNew Check DigitsNew Analogue vs Digital DataNew Analogue vs Digital SignalsNew ADC PrinciplesNew DAC PrinciplesNew Bitmapped GraphicsNew Bitmap ResolutionNew Bitmap Colour DepthNew Bitmap File Size CalculationsNew Bitmap MetadataNew Vector GraphicsNew Vector Graphic PrimitivesNew Vector vs Bitmap ComparisonNew Sound Sampling RateNew Sample ResolutionNew Nyquist TheoremNew Sound File Size CalculationsNew MIDI PurposeNew MIDI Event MessagesNew MIDI AdvantagesNew Lossless vs Lossy CompressionNew Run-Length Encoding (RLE)New Dictionary-Based CompressionNew Encryption TerminologyNew Caesar CipherNew Vernam Cipher (One-Time Pad)New Perfect vs Computational SecurityNew

Processor, Memory, BusesNew Address BusNew Data BusNew Control BusNew I/O ControllersNew Bus CommunicationNew Von Neumann ArchitectureNew Harvard ArchitectureNew Embedded Systems ContextNew Addressable MemoryNew Stored Program ConceptNew ALUNew Control UnitNew ClockNew General-Purpose RegistersNew Program Counter (PC)New Current Instruction Register (CIR)New Memory Address Register (MAR)New Memory Buffer Register (MBR)New Status RegisterNew Fetch–Decode–Execute CycleNew Processor Instruction SetNew Opcode and OperandsNew Immediate AddressingNew Direct AddressingNew Assembly MnemonicsNew LOAD / STORENew ADD / SUBTRACTNew BranchingNew CompareNew Bitwise OperatorsNew ShiftsNew HALTNew Performance: CoresNew Performance: CacheNew Performance: Clock SpeedNew Performance: Word LengthNew Performance: Bus WidthsNew Input Devices (Barcode, RFID)New Output Devices (Laser, Camera)New Secondary Storage PurposeNew Hard DisksNew Optical DisksNew Solid State Drives (SSD)New Storage Speed vs CapacityNew

Moral IssuesNew Ethical IssuesNew Social ImpactsNew Legal IssuesNew Cultural ImpactsNew Opportunities of ComputingNew Risks of ComputingNew Monitoring BehaviourNew Personal Data CollectionNew Data Analysis at ScaleNew Publishing and DisseminationNew Responsibilities of DevelopersNew Embedded Values in SoftwareNew Scale and Harm PotentialNew Legislative ChallengesNew

Serial TransmissionNew Parallel TransmissionNew Synchronous TransmissionNew Asynchronous TransmissionNew Start and Stop BitsNew Baud RateNew Bit RateNew BandwidthNew LatencyNew ProtocolsNew Physical Star TopologyNew Logical Bus TopologyNew Peer-to-Peer NetworkingNew Client–Server NetworkingNew WiFi PurposeNew Wireless AdaptersNew Wireless Access PointsNew Wireless Security (WPA/WPA2)New SSIDNew MAC Allow ListsNew CSMA/CANew RTS/CTSNew Internet StructureNew Packet SwitchingNew RoutersNew GatewaysNew Packet ComponentsNew Routing Across the InternetNew URLsNew FQDNsNew Domain NamesNew IP AddressesNew Domain Name System (DNS)New Internet RegistriesNew Firewalls (Filtering/Proxy/Stateful)New Symmetric EncryptionNew Asymmetric EncryptionNew Key ExchangeNew Digital CertificatesNew Digital SignaturesNew Worms, Trojans, VirusesNew Software VulnerabilitiesNew Mitigations (Code Quality/Monitoring)New TCP/IP LayersNew SocketsNew MAC AddressesNew Well-Known vs Client PortsNew FTPNew HTTPNew HTTPSNew POP3New SMTPNew SSHNew FTP Anonymous vs AuthenticatedNew SSH Remote ManagementNew Email Server RoleNew Web Server RoleNew Web Browser RoleNew IP Network vs Host PartsNew Subnet MasksNew IPv4 vs IPv6New Public vs Private IPsNew DHCPNew Network Address Translation (NAT)New Port ForwardingNew Client–Server Request/ResponseNew WebSocketsNew Web CRUD PrinciplesNew REST PrinciplesNew CRUD ↔ HTTP MappingNew REST ↔ SQL MappingNew REST APIsNew JSON Data ExchangeNew XML Data ExchangeNew JSON vs XML ComparisonNew Thin ClientsNew Thick ClientsNew

Big Data DefinitionNew VolumeNew VelocityNew VarietyNew Structured vs Unstructured DataNew Relational Database LimitationsNew Pattern Discovery and ML ContextNew Distributed Processing NeedNew Functional Programming for DistributionNew ImmutabilityNew StatelessnessNew Higher-Order FunctionsNew Fact-Based Data ModelNew Graph SchemaNew Nodes, Edges, PropertiesNew

Problem DefinitionNew Requirements GatheringNew Data ModellingNew Solution DesignNew Modular DesignNew Algorithm DesignNew UI DesignNew Iterative / Agile DesignNew Implementation PlanningNew Debugging PracticeNew Testing with Normal DataNew Boundary TestingNew Erroneous Data TestingNew Acceptance TestingNew User Feedback EvidenceNew Evaluation CriteriaNew

Project PurposeNew Problem vs Investigation ChoiceNew Feasibility of Technical ChallengeNew Project PlanningNew Analysis EvidenceNew Design EvidenceNew Technical Solution EvidenceNew Solution CompletenessNew Techniques and ComplexityNew Coding StyleNew Testing EvidenceNew Evaluation EvidenceNew Documentation ConcisenessNew Marking Focus AreasNew

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