JYSS 2019 P1

JUNYUAN SECONDARY SCHOOL PRELIMINARY EXAMINATION 2019 SECONDARY FOUR EXPRESS CANDIDATE NAME CLASS INDEX NUMBER COMPUTING 7155/01 Paper 1 3 Sep 2019 Candidates answer on the Question Paper. 2 hours No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your name, class and index number in the spaces at the top of this page. Write in dark blue or black pen. You may use an HB pencil for any diagrams or graphs. Do not use staples, paper clips, glue or correction fluid. Approved calculators are allowed. Answer all questions. The number of marks is given in brackets [ ] at the end of each question or part question. You should show all your working. The total number of marks for this paper is 80. This document consists of 15 printed pages and 1 blank page. [Turn over For Examiner’s use

2 1 (a) A computer has 2048 MB of RAM. How many GB of RAM does the computer have? Show your working. .................................................................................................................................................. .................................................................................................................................................. .................................................................................................................................................. ..............................GB [2] (b) Describe one item that is stored in RAM. .................................................................................................................................................. .................................................................................................................................................. ............................................................................................................................................ [2] (c) Explain two ways that RAM is different to ROM. 1............................................................................................................................................... ................................................................................................................................................. ................................................................................................................................................. 2............................................................................................................................................... ................................................................................................................................................. ........................................................................................................................................... [2]

3 4E Computing P1 2019 Prelim [Turn over 2 Five security terms and six statements are listed below. Draw a line to match