1) The mantissa is concerned with which part of the real number? a) Range b) Precision 2) What does the 1 represent on an "on-off" swtich? a) On b) Off 3) Which system uses base-2 a) Binary b) Denary 4) What type of graphic is made up of pixels? a) Vector b) Bitmap 5) What is 00001111 in decimal? a) 16 b) 15 c) 1111 d) 31 6) Which stores more characters a) ASCII b) Unicode c) Binary d) Vector 7) What do you call the total number of pixels a) Vector b) Bitmap c) ASCII d) Resolution 8) Which is an example of a control character a) A b) B c) ESC d) # 9) What is the exponent of this real number 31.50 a) 3150 b) 2 c) 3 d) real 10) What is the name given to a shape with many sides? a) Hexagon b) Line c) Ellipse d) Polygon 11) Give one example of a common vector attribute a) Fill colour b) Pixels c) Zoom d) Ellipse 12) What is the name of this shape a) Oval b) Circle c) Line d) Ellipse 13) What is the number 65 in 8 bit binary a) 01000001 b) 10000001 c) 1000001 d) 00000111 14) How many bits does extended ASCII used to store each character a) 8 b) 7 c) 16 d) 32 15) How many bits does Unicode use to store each character a) 8 b) 7 c) 16 d) 32 16) Which of the following is NOT an example of a control character? a) ESC b) TAB c) # d) ENTER 17) Which file format can be used to store animated images a) JPEG b) GIF c) SVG d) MP3 18) What happens to bitmap images when they are scaled? a) They become transparent b) The stay the same quality c) They require less storage d) They become jagged 19) Which of the following is a pro of vector images? a) Larger file size b) Can edit individual pixels c) Smaller file size d) Shows realistic pictures 20) What is the minimum number of sides a polygon object can have? a) 1 b) 3 c) 2 d) 4 21) What is the role of the processor in a computer system? a) It handles the instructions and executes them in a sequence. b) It provides power to the computer system. c) It is responsible for rendering graphics. d) It is used to store data permanently. 22) Which part of the processor performs calculations a) Registers b) ALU c) Control unit d) Calculator 23) What are registers used for in a processor? a) Managing user accounts on a computer b) External storage of backup data c) Permanent storage of user preferences d) Temporary storage locations within the processor 24) What has a set of rules which are used to decide if a message can pass or is blocked a) Firewall b) Encryption 25) The process of converting data and messages into a format that cannot be read by unauthorised people. a) Firewall b) Encryption 26) How can you reduce energy consumption by the computer a) Increase the monitor brightness b) Use a screensaver c) Use sleep mode d) Increase battery mode 27) What type of memory is volatile a) RAM b) ROM 28) Which bus is bi-directional? a) Address buss b) Data bus 29) Which translator translates source code into machine code one line at a time. a) Compiler b) Interpreter 30) Which translator translates the entire source code program to object code in one go. a) Compiler b) Interpreter 31) State how many extended ASCII text characters can be stored using 80 bits a) 8 b) 10 c) 01010000 d) 7 32) The part of the processor used to temporarily store the result of the calculation. a) ALU b) Register 33) How many bits are used to store the word REWIND in 8 bit ASCII a) 8 bits b) 48 bits c) 7 bits d) 50 bits 34) The part of the processor that will perform the calculation once the program is implemented. a) ALU b) Register

N5 Computing - CS Revision

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