The American University in Cairo Computer Science Department CSCI 106 05 Dr KHALIL QUIZ I Fall 2004 Last Name ID First Name Form I Question 1 10 points Perform the following conversion operations to the number systems indicated 110 10 2 16 1010100000101111001101 2 16 8 Question 2 10 points Subtract 15 10 from 13 10 in 8 bit two s complement format Question 3 10 points The following result was produced in an accumulator of 8 bit structure Give the value of this result in decimal notation for each of the following cases 1 0 0 1 1 1 0 0 1 The computer is performing its operations in two s complement integer format 2 The computer is performing its operations in sign magnitute integer format 1 Question 4 10 points Tick only one possible answer for the following 1 Von Neumann architecture is a A stored program computer b A web browser c An architecture for RAM d All the above 2 90E 16 is equivalent to a 9010 10 b 6777 8 c 100100001110 2 d None of the above 3 DOS UNIX and Windows are a Text Editors b Loaders c Web browsers d Operating systems 4 Computer virus is a Violation of copyright agreements b Code disrupting the computer operations and erasing information c A Computer theft or computer fraud d A biological disease causing malfunctioning of the computer 5 The largest integer number that can be stored in 8 bit two s complement is a 128 b 1127 c 64 d None of the above 6 18 10 in 8 bit two s complement format is a 110001 b 11110000 c 11110001 d None of the above 7 A web browser is a A part of the operating system controls a user s interaction with the web b A graphical user interface that allows users to navigate through the web c A software that lets users display and view a web document d A computer that provides resources to other computers in a network 8 To address a memory of 128M bytes we need an address on a 28 bits b 16 bits c 27 bits d none of the above 9 In binary 1011 11011 a 101000 b 100110 c 110110 d 100101 10 Software Piracy is a Violation of copyright agreements by illegally copying software b Code disrupting the computer operations and erasing information c A Computer theft or computer fraud d A biological disease causing malfunctioning of the computer 2