Assignment description: This assignment includes four tasks as following: Task1: Analyze the performance of HDD (hard disk drive) and SSD (solid-state drive) in terms of speed and cost. Task2: Assume the following statement that will be performed by computer system: Z = a+b Discuss the process taken by a computer processor to execute the above instruction and store the result. Task3: Given the following statement: short int X, Y, Z; where short int size is 16 bits. Identify the problem that may occur during the execution of the following operation? Explain your answer. X=400; Y = 400; Z=X*Y; Task4: Assume that you have a computer system with the following specifications: A processor with 64-bit word size. RAM with size 16GB Answer the following questions: Question1: How many read operations are needed to perform a *b, where a and b are variables of size 32 bits each. Question2: Compute the width of the address and data bus considering RAM and processor. Question3: What is the Data Transfer Rate (Bus Capacity) where the data transfer unit is 16 bits and the bus cycle time is 0.3 nanoseconds 1. Sketch the simplified block diagram of data Communication model for sending a text messages data between two computer as shown in FIGURE Q2.Briefly explain the operation of system. Digital bit stream Analog Analog Digital bit signal signal stream Text Text Trans- Source Trans- mitter mission Receiver Destination system Input information m Input data 8(1) Transmitted signal s(f) Figure 1.4 Simplified Data Communications Model Received signal Output data 8'(1) Output information m' FIGURE Q2 2. With a help of block diagram, explain the operation of Asynchronous Transfer Mode (ATM) packet switching system.