Introduction UCL DEPARTMENT OF COMPUTER SCIENCE COMP0023 Networked Systems Individual Coursework 1: Ben’s Local DNS Server Due: 14:55 PM, 15th November 2018 Having just learned about the Domain Name System (DNS), COMP0023 student Ben Bitdiddle’s interest is piqued. In his spare time, Ben runs a small ISP, and of course, he wants to offer his […]
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Introduction to Intra-Domain Routing Stefano Vissicchio UCL Computer Science COMP0023 Agenda • We delve into network layer’s main functionality 1. Setting • Context • Routing players 2. Intra-domain routing problem definition 2 Let’s consider a network with several LANs 1.2.3.48 host host 1.2.2.0/23 1.2.3.156 DNS 1.2.3.19 router host 5.6.7.11 host … DNS 5.6.7.0/24 router router
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distributed systems 2020 CONSISTENCY MODELS 1 CONSISTENCY MODELS Motivation Requirements for a distributed system Security Scalability Availability Performance Common solution: replication Tradeoff: high availability vs data consistency DISTRIBUTED SYSTEMS 2 CONSISTENCY MODELS CONSISTENCY MODELS Data Consistency ADD 10%! (REQUEST A) ADD 100$! (REQUEST B) REQUEST A, THEN REQUEST B REQUEST
The Google File System Sanjay Ghemawat, Howard Gobioff, and Shun-Tak Leung Google∗ ABSTRACT We have designed and implemented the Google File Sys- tem, a scalable distributed file system for large distributed data-intensive applications. It provides fault tolerance while running on inexpensive commodity hardware, and it delivers high aggregate performance to a large number of clients.
2019 CSEE 4119: Computer Networks Project 1: Video CDN Preliminary Stage Due: October 14, 2020, at 11pm Updates: 2020/10/06: none yet 1. Overview 2 1.1 In the Real World 2 1.2 Your System 2 1.3 Groups and collaboration policy 3 2. Preliminary stage 4 2.1 Get your connections right. 4 2.2 Forwarding protocol. 5 2.3
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2019 CSEE 4119: Computer Networks Project 1: Video CDN Preliminary Stage Due: October 14, 2020, at 11pm Updates: 2020/10/06: none yet 1. Overview 2 1.1 In the Real World 2 1.2 Your System 2 1.3 Groups and collaboration policy 3 2. Preliminary stage 4 2.1 Get your connections right. 4 2.2 Forwarding protocol. 5 2.3
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SIT202 Computer Networks Trimester 2, 2020 Problem Based Learning Task 2 Due Date: 8pm Sunday September 27th, 2020 This assessment is marked out of 100 marks and is worth 35% of your final unit mark. All work completed/submitted as part of this assessment task must be your own, individual work. Any content drawn from other
Networks, Security, and Privacy 158.235 Dr Hooman Alavizadeh Massey University 1 Network Layer Reading: Chapter 5 in the prescribed textbook 2 Network Layer • Layer 3 in the Internet model – Responsible for moving messages from a source computer to the intended destination computer • Mainfunction; – IP fragmentation – Addressing – Routing Internet Model
Networks, Security, and Privacy 158.235 Dr Hooman Alavizadeh Massey University 1 Physical Layer Reading: Chapter 3 in the prescribed textbook 2 Physical Layer • Layer 1 in the Internet model • Focus on transmission over circuits • Types of Circuits – Physical circuits connect devices & include wires – Logical circuits refer to the transmission
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SECURITY CONTROLS 7CCSMSEM Security Management Dr. Jose M. Such Learning Outcomes • Types of Security Controls • Technical Security Controls • Malware threats • Controls against malware • Controls for Networks and Communications Types of Security Controls TECHNICAL (Firewall) PROCEDURAL (Clear Desk Policy) SECURITY CONTROLS PHYSICAL (secure physical storage) Types of Security Controls • There
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