9618_s23_qp_12
A paper of Computer Science, 9618
Questions:
7
Year:
2023
Paper:
1
Variant:
2
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1
A company has a LAN (local area network). Give two benefits of connecting computers to a LAN. Give two characteristics of a LAN. One of the company’s offices has one server and four computers connected in a star topology. Draw a diagram to show the layout of the office’s star topology. Computers can be connected using Ethernet. Describe what is meant by Ethernet. The network runs as a thick‑client model. Describe what is meant by a thick‑client model.
2. Communication  →  2.1. Networks including the internet
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2
A horse riding school uses a database, Lessons, to store data about lesson bookings. This database is created and managed using a Database Management System (DBMS). The table contains names and descriptions of DBMS features and tools. Complete the table by writing down the missing names and descriptions. Name Description Data dictionary Query processor A model of a database that is not specific to one DBMS. A software tool that allows the user to create items such as tables, forms and reports. Explain the reasons why referential integrity is important in a database. The database Lessons has the following tables: HORSE(HorseID, Name, Height, Age, HorseLevel) STUDENT(StudentID, FirstName, LastName, RiderLevel, PreferredHorseID) LESSON(LessonID, Date, Time, StudentID, HorseID, LessonContent) Dates in this database are stored in the format #DD/MM/YYYY#. The fields RiderLevel and HorseLevel can only have the values: Beginner, Intermediate or Advanced. Describe two methods of validating the field RiderLevel. Write a Structured Query Language (SQL) script to return the names of all the horses that have the horse level intermediate or beginner. The following SQL script should return the number of riders that have the rider level beginner and have a lesson booked on 09/09/2023. SELECT SUM(STUDENT.RiderLevel) AS NumberOfRiders FROM STUDENT, LESSON WHERE StudentID = StudentID OR Date = #09/09/2023# AND STUDENT.RiderLevel = Beginner; There are four errors in the script. Identify and correct each error.
8. Databases  →  8.3. Data Definition Language (DDL) and Data Manipulation Language (DML)
8. Databases  →  8.2. Database Management Systems (DBMS)
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3
A program is written in assembly language. The program is converted into machine code by a two‑pass assembler. Draw one or more lines to identify the pass or passes in which each action takes place. first second Pass reads the source code one line at a time generates object code removes white space adds labels to the symbol table Action Assembly language statements can use different modes of addressing. Complete the following description of addressing modes. addressing is when the operand holds the memory address of the data. addressing is when the operand holds a memory address that stores the memory address of the data. addressing is when the operand is the data.
4. Processor Fundamentals  →  4.2. Assembly Language
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4
Data in a computer is stored in binary form. State the number of unique binary values that can be represented in 16 bits. Give the 8‑bit one’s complement representation of the denary number −120. Show your working. Working Answer Convert the hexadecimal number A04 into denary. Show your working. Working Answer Show the result of a 2‑place left logical shift on the binary number:
1. Information representation  →  1.1. Data Representation
13. Data Representation  →  13.3. Floating-point numbers, representation and manipulation
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5
A student has purchased a new laptop. The laptop is designed using the Von Neumann model for a computer system. Identify two types of signal that a control bus can transfer. Describe two ways the hardware of a laptop can be upgraded to improve the performance and explain how each upgrade improves the performance. Peripherals are connected to the laptop using ports. A printer is connected to a Universal Serial Bus (USB) port. Describe how data is transmitted through a USB port. A monitor is connected to the laptop using a different type of port. Identify one other type of port that can be used to connect the monitor. The laptop has systems software. Describe how the Operating System (OS) manages processes in the computer. Describe the purpose of utility software in a computer.
4. Processor Fundamentals  →  4.1. Central Processing Unit (CPU) Architecture
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7
A software developer is working in a team writing a program for a client. The developer is writing a new program library to be used by the other team members. Define the term program library. Explain two benefits to the developer of choosing to create a Dynamic Link Library (DLL). The development team needs to use a translator whilst writing the program for the client. Identify whether an interpreter or a compiler would be more appropriate at this stage of the program development. Justify your choice. Translator Justification The development team uses an Integrated Development Environment (IDE). Complete the table by describing the typical features found in an IDE. Feature Description Breakpoints Dynamic syntax checks Context‑sensitive prompts Single stepping One section of the program being developed will convert user’s speech into commands. Explain how Artificial Intelligence (Acan be used in this program.
5. System Software  →  5.2. Language Translators
12. Software Development  →  12.1. Program Development Life cycle
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