A full walkthrough to this IGCSE/OLevel specimen paper

Recommended to watch at 1.25x speed and use mark scheme to see full list of acceptable answers too

00:14 Question 1: networking, MAC address, mediaaccess control, hexadecimal, binary, bit, byte, register, memory address, colour codes, IPv6, logical left shift, negative binary, two's complement

12:43 Question 2: website, web server, packet switching, data, transmission, source IP address, destination IP address, packet number, trailer, streaming, encryption, storage space, bandwidth, compression, lossy, lossless, parallel, serial, simplex, halfduplex, fullduplex, speed, skew, DDoS, distributed denial of service, hacker, bot, botnet, traffic, firewall

29:15 Question 3: IP address, static, dynamic, public, private, denary, groups, unique, router, uniform resource locator, URL, protocol, domain, file, path

34:20 Question 4: Von Neumann architecture, accumulator, hard disk drive (HDD), memory address register (MAR), program counter (PC), random access memory (RAM), read only memory (ROM), sensor, solidstate drive (SSD), control unit (CU), decode instructions, clock signal, single core, dual core, simultaneous execution, parallelism, execution, bootstrap, application software, firmware, hard disk drive, MAC address

45:12 Question 5: highlevel language, program, lowlevel, libraries, speed, memory usage, easy to understand, direct hardware access, IDE, syntax highlighting, codesuggestions, autocompletion, error corrections, debugger, code editor

50:35 Question 6: robot, robotics, programmable, electronic, mechanical, safety, speed, accuracy, availability

53:21 Question 7: character set, Unicode, ASCII, standard, extended, unique binary value

58:16 Question 8: virtual memory, processes, programs, RAM, randomaccess memory, secondary storage, swap, page, paging, partitioning

1:05:53 Question 9: symmetric encryption, algorithm, cipher, key, plaintext, private key, public key, ciphertext, asymmetric encryption, SSL, secure socket layer, TLS, transport layer security, digital certificate, digital signature

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