CSCI150 2021S3 Quiz 1 Welcome to your CSCI150 2021S3 Quiz 1. You will need to write down your name and student ID as they appear in your college profile. You are allowed to attempt only once, if you submit multiple times I will void all your submissions. Please make sure you get to the last page and see the confirmation before you leave. It is recommended that you complete this quiz before 10 October, but anytime before the 12th week is OK. You will NOT be shown your score immediately, I will update the scores every weekend on Moodle. PLEASE UNDERSTAND ANY SUBMISSION IS FINAL, YOU CANNOT RETAKE THE TEST OR MODIFY YOUR ANSWERS AFTERWARDS! Good luck. Name Student ID Q1.1 (0.5pt) Storage components belong to which category in the digital von Neumann computer? Memory CPU IO Devices None of above None Q1.2 (0.5pt) A finite fraction number converted into the binary system would be Finite Infinite Uncertain You cannot convert fractions to binary None Q1.3 (0.5pt) Which of the following cases would you be most likely to encounter BCD numbers? Smart toaster Elevators Analogue watches Refrigerator None Q1.4 (0.5pt) In digital circuits, which of the following is correct regarding comparisons to analogue circuits? Digital and Analogue circuits can both use voltage levels to represent information. Digital and Analogue circuits are equally robust against disruption. Analogue signals can always be converted to digital without losing information. None of above. None Q1.5 (0.5pt) Which of the following regarding parity bit is correct? Parity bit can detect all corruption in data transmission. Parity bit can recover original data from corrupt transmission. Parity bit is always 1 single bit for every byte of transmission. None of above. None 1 out of 5 Q2 (2.5pt) Including the previous borrow bit, write down the 4bits of borrow for 4bit subtraction of 8 - 5. 2 out of 5 Q3 (2.5pt) Write down a single number to answer the following questions. Q3.1 (0.5pt) What is the greatest decimal value representable by 8bit unsigned integer? Q3.2 (0.5pt) What is the smallest decimal value representable by signed 8bit binary? Q3.3 (0.5pt) Convert 83 to BCD (no space) Q3.4 (0.5pt) Convert 34h to binary Q3.5 (0.5pt) Search for an ASCII table, find out what the following hexadecimal code means when converted to text (careful with casing): 6162 726e 6163 6b 3 out of 5 Q4 (2.5pt) Answer the following questions in numbers. Q4.1 (1pt) At a sample rate of 44100, each sample 2 bytes, what is the bitrate in bytes? Q4.2 (0.5pt) CPU clock speed refers to the number of clock cycles it can perform per second, and a lot of instructions in CPUs take only one or two clock cycles to complete. What is the current most common unit of measurement for Clockspeed? (Hint: 3 letters only, first two uppercase) Q4.3 (1pt) Among the following transmission, write down the one that contains error, assuming the first bit is odd parity.100000000, 011101100, 100100110, 000010000 4 out of 5 By checking this box, I acknowledge I finished this test by myself WITHOUT cheating. By checking this box, I acknowledge that I understand I CANNOT retake the test after submission. 5 out of 5
