Study guides, Class notes & Summaries

COMPUTER SCIENCE EXAM LAEST 2024 ALREADY GRADED A+ Hard Drive - ANSWER>>Storage device that stores digitally encoded data on rapidly rotating rigid disks with magnetic surfaces. The device is either permanently installed within the computer case or can be portable Motherboard - ANSWER>>Printed circuit board on which the CPU, RAM chips and other electronic circuit elements of a digital computer are frequently located. RAM - ANSWER>>Random Access Memory - temporary place to st...

COMPUTER SCIENCE EXAM WITH QUESTIONS & VERIED ANSWERS LATEST UPDATE ALREADY GRADED A+ disadvantages of networking computers - management is complicated and expensive - viruses can infiltrate one computer and spread across network quickly topology SDD Solid State Drive - non volatile storage - no moving parts - read/write quicker than HDD - low power consumption ASCII American Standard Code for Information Interchange - substitutes a number for each character - stored in binary usi...

COMPUTER SCIENCE EXAM WITH QUESTIONS & CORRECT ANSWERS 100% CORRECT LATEST 2024 UPDATE An administrator at the school has data about hundreds of students in a particular course. While the administrator does not know the values of each student's individual assignment scores, the administrator does have the following information for each student. • The student name • A unique student ID number • The number of assignments for the course • The average assignment score before the lowe...

COMPUTER SCIENCE EXAM WITH QUESTIONS & VERIED ANSWERS LATEST UPDATE ALREADY GRADED A+ disadvantages of networking computers - management is complicated and expensive - viruses can infiltrate one computer and spread across network quickly topology SDD Solid State Drive - non volatile storage - no moving parts - read/write quicker than HDD - low power consumption ASCII American Standard Code for Information Interchange - substitutes a number for each character - stored in binary usi...

OCR GCSE (9–1) COMPUTER SCIENCE J277/02 COMPUTATIONAL THINKING, ALGORITHMS AND PROGRAMMING QUESTION PAPER AND MARK SCHEME FOR JUNE 2023 (MERGED)

OCR GCSE (9–1) COMPUTER SCIENCE J277/01 COMPUTER SYSTEMS QUESTION PAPER AND MARK SCHEME FOR JUNE 2023 (MERGED)

What is a Natural Number and its Symbol?Positive Integer (N) What is a Real Number and its Symbol?Any number (R) What is an Integer and its Symbol?Any whole number (Z) What is a Rational Number and its Symbol?Can be represented in a Fraction (Q) What is a Ordinal Number?Position in a list What is a Cardinal Number?Size of list What is Absolute Error?Difference between actual answer and estimate What is Relative Error?absolute error/true value

AlgorithmA sequence of steps to be performed to solve a problem Computer ProgramAn implementation of an algorithm Data StructureSpecialized format for storing and organizing data ProcedureA names section of code which performs a task and does not return a value FunctionA named section of code which performs a task and returns a value ParameterA special type of variable which can be passed through sub-routines ScopeThe reach of a variable/data structure

Materials For this paper you must have: • a computer • a printer • appropriate software • the Electronic Answer Document • an electronic version and a hard copy of the Skeleton Program • an electronic version and a hard copy of the Preliminary Material. You must not use a calculator. Instructions • Type the information required on the front of your Electronic Answer Document. • Before the start of the examination make sure your Centre Number, Candidate Name and Candid...

Materials For this paper you must have: • a calculator. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. • You must answer the questions in the spaces provided. Do not write outside the box around each page or on blank pages. • If you need extra space for your answer(s), use the lined pages at the end of this book. Write the question number against your answer(s). • Do all rough work in this book. ...