Binary analysis and application security Data can be Code • Lots of the attacks we have seen trick a program into accept data that is really code, e.g., – SQL injection – XSS – Buffer overflow (next lecture) • This is a very common way to attack systems. “Little Bobby Tables” Code is Data • […]
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Computer Architecture ELEC3441 Lecture 9 – Cache (2) Dr. Hayden Kwok-Hay So Department of Electrical and Electronic Engineering Causes of Cache Misses: The 3 C’s Compulsory: first reference to a line (a.k.a. cold start misses) – misses that would occur even with infinite cache Capacity: cache is too small to hold all data needed by
Computer Architecture ELEC3441 Computer Performance 2nd Semester, 2020-21 Dr. Hayden Kwok-Hay So Department of Electrical and Electronic Engineering University of Hong Kong How do you measure performance of a computer? How do you make a computer fast? HKU EEE ELEC3441 – HS 2 Ways to measure Performance Execution Time Throughput Time to finish a task
Tut 3 Qn 1 A geometric model AIRPLANE consists of a plane body, a right wing, a left wing and a rear wing. Under the right and the left wings are the right and the left engines respectively. Assume that the functions body(), wing(), rear_wing() and engine() have been written. Calling these functions will generate
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IoT Connectivity Part II Syllabus This module will cover the following • Wireless Local Area Networks (WLAN) • IEEE 802.11 based WLANs • IEEE 802.11 enhancements • Low-power Wide Area Networks (LPWAN) • LoRaWAN • Narrow-band IoT (NB-IoT) 2 © 2020 Arm Limited Wireless Local Area Networks (WLANs) • Computer networking technology spanning limited areas
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The Cloud Syllabus This module will cover the following • What the cloud is • Virtualization • Cloud interfacing protocols • Big data processing • Device management platforms 2 © 2020 Arm Limited What is the Cloud? Definition “A network of remote servers hosted on the Internet and used to store, manage, and process data
Introduction to Embedded Systems Syllabus This module will cover the following aspects • An overview of embedded systems • Examples of embedded systems • Features of embedded systems 2 © 2020 Arm Limited Embedded systems Internet of Things (IoT) • Application-specific computer system • Built into a larger system • Often with real-time computing constraints
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IoT System Architectures and Standards Syllabus This module will cover the following aspects • Key considerations for IoT architectures • Cloud, fog, and edge paradigms • The role of gateways in IoT • IoT internetworking approaches • Standards that enable practical IoT deployment and interoperability 2 © 2020 Arm Limited The IoT architectural landscape •
IoT Security Part I Syllabus This module will cover the following • IoT security in context: importance and role of devices • Threat modelling • End-to-end security • Security provision in hardware, software, and networks (overview) 2 © 2020 Arm Limited IoT security in context Why security is critical in IoT Context: • Billions of
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Embedded Software, Programming & Debugging Syllabus This module will cover the following aspects • Software for embedded systems • Embedded systems programming • Embedded systems debugging 2 © 2020 Arm Limited Embedded software Software incorporated into/aiming to control machines or devices • Usually specialized for a specific hardware platform and specific purpose • Simple, limited
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