The American University in Cairo Computer Science Department CSCI 106 04 Dr KHALIL Quiz I Spring 2006 Last Name ID First Name Form I EXAMINATION INSTRUCTIONS Do not turn this page until asked to do so Exam time is 30 minutes Put the answers on the same question sheet do not use any additional papers even for scratch Write your name ID section no in the indicated places Read the exam instructions Read the honesty policy Sign the following statement Academic Integrity Policy Cheating in Exams is a violation of the Academic Integrity Policy of AUC Whispering talking looking at someone else s paper or copying from any source is considered cheating Any one who does any of these actions or her his answers indicates that she he did any of them will receive a punishment ranging from zero in this exam to failing the course If repeated it may lead to dismissal from AUC I have read the honesty policy and exam instructions and I am presenting this exam as entirely my effort Signature DO NOT USE THIS SECTION Question Points 1 15 2 10 3 10 4 15 Total 50 1 Grade Question 1 15 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 1 0 1 0 1 0 1 1 The computer is performing its operations in unsigned integer format 2 The computer is performing its operations in two s complement integer format 3 The computer is performing its operations in sign magnitute integer format Question 2 10 points Perform the following conversion operations to the number systems indicated 100000011101111 2 8 16 1101 10 2 16 Question 3 10 points Subtract 13 10 from 11 10 in 8 bit two s complement format 2 Question 4 15 points Tick only one possible answer for each of the following 1 The software that controls and manages the computer resources is a Source program b Loader c Web browser d Operating system 2 The smallest integer number that can be stored in 8 bit unsigned format is a 0 b 128 c 127 d none of the above 3 The part of the computer that temporary stores programs and data to be processed is a The CPU b ROM c RAM d ALU 4 The process that allows simultaneous access to a single computer is a Operating system b High level programming language c Supercomputer d Time sharing 5 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 enables users to edit web pages d A computer that provides resources to other computers in a network 6 Von Neumann architecture is a A stored program computer b A web browser c An architecture for RAM d All the above 7 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 8 In binary 1001 11101 a 101000 b 100110 c 110110 d none of the above 9 Summing up all even integers is a nonalgorithmic problem because a It s too difficult to compute b It involves infinite number of operations without termination c No machine can do it d The algorithm to do it will very long 10 To Address a memory of 128 Mbytes the address bus should be a 16 bits b 27 bits c 128 bits d None of the above 3