OCR J277 GCSE: Complete Paper One (Computer Science Full Paper 1)
This video contains all paper one (Computer Systems) topics from the J277 OCR GCSE Computer Science specification. Topic Times: 1.1 Architecture of the CPU 0:00:19 - 1.1 Purpose of the CPU 0:00:54 - 1.1 CPU Components 0:01:48 - 1.1 Registers & the Fetch Execute Cycle 0:02:49 - 1.1 Von Neumann Architecture 0:03:20 - 1.1 Decoding Instructions 1.2 CPU Performance 0:03:47 - 1.2 Clock Speed 0:04:28 - 1.2 Cache Memory 0:05:05 - 1.2 Number of Cores 1.3 Embedded Systems 0:05:43 - 1.3 Embedded Systems 2.1 Primary Storage 0:06:23 - 2.1 Primary Storage 0:06:51 - 2.1 RAM & ROM 0:07:43 - 2.1 Virtual memory 2.2 Secondary Storage 0:08:16 - 2.2 Secondary Storage 0:08:44 - 2.2 Secondary Storage Characteristics 0:09:46 - 2.2 Optical Storage 0:10:48 - 2.2 Magnetic Storage 0:12:03 - 2.2 Solid State Storage 2.3 Units 0:13:09 - 2.3 Units of Data Storage 0:14:50 - 2.3 Data Capacity Requirements 2.4 Data Storage (Numbers) 0:16:44 - 2.4 (Numbers) Binary & Denary 0:17:59 - 2.4 (Numbers) Hexadecimal 0:18:41 - 2.4 (Numbers) Number System Ranges 0:19:58 - 2.4 (Numbers) Binary to Denary 0:21:14 - 2.4 (Numbers) Denary to Binary 0:24:11 - 2.4 (Numbers) Binary to Hexadecimal 0:25:23 - 2.4 (Numbers) Hexadecimal to Binary 0:26:30 - 2.4 (Numbers) Denary to Hexadecimal 0:29:50 - 2.4 (Numbers) Hexadecimal to Denary 0:31:44 - 2.4 (Numbers) Binary Addition 0:33:45 - 2.4 (Numbers) Overflow Errors 0:34:24 - 2.4 (Numbers) Binary Shifts 0:36:20 - 2.4 (Numbers) Binary Shift Issues 2.4 Data Storage (Characters) 0:37:23 - 2.4 (Characters) Character Sets 0:38:16 - 2.4 (Characters) ASCII 0:39:35 - 2.4 (Characters) Unicode 0:40:59 - 2.4 (Characters) Text File Size 2.4 Data Storage (Images) 0:42:14 - 2.4 (Images) Pixels & Image Resolution 0:43:14 - 2.4 (Images) Colour Depth & Metadata 0:44:03 - 2.4 (Images) Image File Size 2.4 Data Storage (Sound) 0:45:00 - 2.4 (Sound) Sound Sampling & Sample Rate 0:45:48 - 2.4 (Sound) Bit Depth 0:46:43 - 2.4 (Sound) Audio File Size 2.5 Compression 0:47:38 - 2.5 Compression Benefits 0:48:23 - 2.5 Lossy Compression 0:49:31 - 2.5 Lossless Compression 3.1 Networks and Topologies 0:50:32 - 3.1 LAN & WAN 0:51:37 - 3.1 Network Performance 0:53:11 - 3.1 The Internet 0:54:06 - 3.1 Client-Server Networks 0:55:01 - 3.1 Peer-to-Peer Networks 0:56:06 - 3.1 Network Hardware 0:57:14 - 3.1 DNS Servers 0:58:32 - 3.1 The Cloud 1:00:10 - 3.1 Star Topology 1:01:20 - 3.1 Mesh Topology 3.2 Wired & Wireless Networks, Protocols and Layers 1:02:20 - 3.2 Wired Networks 1:03:48 - 3.2 Wireless Networks 1:05:14 - 3.2 Encryption 1:06:12 - 3.2 IP & MAC Addresses 1:07:47 - 3.2 Protocols & Standards 1:08:36 - 3.2 Common Protocols 1:09:43 - 3.2 Protocol Layers 4.1 Threats to Computer Systems and Networks 1:10:24 - 4.1 Common Malware 1:12:21 - 4.1 Social Engineering, Brute-Force and DoS Attacks 1:14:10 - 4.1 Data Interception and SQL Injections 4.2 Identifying and Preventing Vulnerabilities 1:15:16 - 4.2 Prevention Methods 5.1 Operating Systems 1:17:17 - 5.1 Operating Systems 5.2 Utility Software 1:19:22 - 5.2 Utility Software 6.1 Ethical, Legal, Cultural and Environmental Impacts 1:20:38 - 6.1 Impacts of Digital Technology 1:23:08 - 6.1 Data Protection Act (2018) 1:24:01 - 6.1 Computer Misuse Act (1990) 1:24:51 - 6.1 Copyright, Designs & Patents Act (1988) 1:25:50 - 6.1 Open Source Licence 1:27:06 - 6.1 Proprietary Licence Check out the playlist with each individual topic here: • OCR GCSE Computer Science | J277 | Paper 1 Check out the website here: https://www.csnewbs.com/ Correction The slide from 1:05:00 to 1:05:12, should say 'wireless disadvantages', not 'wired disadvantages'. The final six seconds was an outro saying "...that was the final topic. I hope you have found the video useful and good luck in your exam!" but it wasn't added properly :(
