QCE Digital Solutions Unit 4 — Digital Methods for Exchanging Data

1 Why data is encrypted 2 Plaintext 3 Ciphertext 4 Encryption key 5 Protecting data at rest 6 Protecting data in transit 7 Man-in-the-middle attacks 8 Why encrypted data is useless to an interceptor 9 Encrypting data at rest and in transit 10 Encrypting a message with a Caesar shift 11 Decrypting a message with a Caesar shift 12 Caesar cipher wrap-around with MOD 26 13 Breaking a Caesar cipher by trying every shift 14 Frequency analysis 15 Polyalphabetic ciphers 16 Vigenere cipher 17 Gronsfeld cipher 18 One-time pad 19 Why a Caesar cipher is weak compared with modern encryption 20 Symmetric encryption 21 Encrypting and decrypting with one shared key 22 Why a symmetric key must be shared 23 The risk of sharing a symmetric key 24 Block ciphers and key size 25 DES 26 Triple DES 27 AES 28 Blowfish 29 Twofish 30 Asymmetric encryption 31 Encrypting with the recipient's public key 32 Decrypting with the private key 33 RSA 34 Comparing symmetric and asymmetric keys 35 Choosing symmetric or asymmetric encryption for a scenario 36 Base64 is encoding, not encryption 37 One-way functions 38 Hashing functions 39 Using hashes to check data integrity 40 Why passwords are stored as hashes 41 Salting a password hash 42 Checksum 43 Calculating a checksum 44 Checking a checksum at the receiver 45 What a checksum can and cannot detect 46 What data integrity means in transmission 47 Authentication vs authorisation 48 Authentication factors 49 Multi-factor authentication 50 SSL certificates and the handshake 51 Choosing a cryptographic technique for a scenario 52 Why compression is needed: less storage space 53 Why compression is needed: less bandwidth 54 Why compression is needed: shorter transmission time 55 Lossy compression 56 Lossless compression 57 Comparing lossy and lossless compression 58 Decompressing a file 59 Order of compression, encryption and hashing 60 Personal data 61 Sensitive information 62 Privacy Act 1988 (Cwlth) 63 Who must follow the Privacy Act: APP entities 64 What the Australian Privacy Principles are 65 The 13 APPs grouped by stage of the data lifecycle 66 Consent when collecting personal data 67 Australian Privacy Principle 1 68 APP 2: anonymity and pseudonymity 69 APP 3: collecting only what is reasonably necessary 70 APP 5: notifying people when collecting data 71 Australian Privacy Principle 6 72 APP 8: sending personal data overseas 73 Australian Privacy Principle 11 74 APP 12 and 13: access to and correction of personal information 75 The OAIC and making a privacy complaint 76 Ethical issue: lack of transparency 77 Ethical issue: misuse of personal data and information 78 Analysing an ethical issue in a data scenario 79 Network protocols 80 Client and server 81 Why data is broken down into packets 82 The three parts of a packet 83 Packet switching 84 Packets arriving out of order 85 Bandwidth and network speed 86 Latency 87 Jitter 88 Guaranteed delivery 89 Timely delivery 90 The ARQ process step by step 91 Transmission Control Protocol (TCP) 92 User Datagram Protocol (UDP) 93 Purpose of HTTP 94 HTTP request and response 95 HTTP compared with HTTPS 96 Secure socket layer (SSL) protocol 97 FTP 98 Virtual private networks (VPNs) 99 Streaming data packets 100 Broadcasting data packets 101 What an API is 102 REST architecture 103 HTTP methods in a REST API 104 Calling a web API with requests.get() 105 JSON structure 106 Reading JSON data from an API response 107 XML files: structure 108 Reading an XML file with ElementTree 109 Comparing JSON and XML 110 Delimited (CSV) files: structure 111 Reasons for using TXT, CSV and XML data sources 112 Handling API errors 113 Keeping API keys secure 114 Purposes of naming conventions 115 Camel casing 116 Snake casing 117 Hungarian notation for variables 118 Choosing a data type for a value 119 One-dimensional arrays 120 Records: grouping fields of different data types 121 Two-dimensional arrays 122 Choosing a data structure 123 Data dictionary 124 Front-end sub-system 125 Back-end sub-system 126 From URL to web page: the full sequence 127 How the front-end and back-end exchange data 128 Data flow diagram (Level 1): processes 129 Data flow diagram (Level 1): data stores and entities 130 Data flow diagram (Level 1): data flows 131 Drawing a Level 1 data flow diagram from a scenario

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QCE Digital Solutions Unit 4: Encryption basics and classical ciphers Students learn why data is encrypted and how classical ciphers such as Caesar, Vigenère, Gronsfeld and the one-time pad work and are broken.

17

QCE Digital Solutions Unit 4: Symmetric and asymmetric encryption Students learn how symmetric block ciphers (DES, Triple DES, AES, Blowfish, Twofish) and asymmetric encryption (RSA) work and when to choose each.

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QCE Digital Solutions Unit 4: Hashing, checksums and authentication Students learn how hashing, checksums and authentication check data integrity and verify identity, and how to choose a cryptographic technique for a scenario.

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QCE Digital Solutions Unit 4: Compression and securing stored and transferred data Students learn how lossy and lossless compression work and the order in which compression, encryption and hashing are combined.

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QCE Digital Solutions Unit 4: Privacy law and ethics of data Students learn the Privacy Act, the Australian Privacy Principles and the ethical issues around personal and sensitive data.

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QCE Digital Solutions Unit 4: Network transmission principles Students learn how data is split into packets and sent across a network, and how bandwidth, latency, jitter and guaranteed or timely delivery affect it.

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QCE Digital Solutions Unit 4: Data transmission protocols Students learn the protocols used to move data, including TCP, UDP, HTTP, HTTPS, SSL, FTP, VPN, and streaming and broadcasting packets.

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QCE Digital Solutions Unit 4: Exchanging data with APIs, REST, JSON and XML Students learn how systems exchange data through web APIs and REST, and how JSON, XML and CSV structure that data.

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QCE Digital Solutions Unit 4: Naming conventions, data types and data structures Students learn naming conventions, data types, data structures and data dictionaries so shared data is clear and consistent.

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QCE Digital Solutions Unit 4: Front-end, back-end and data flow diagrams Students learn how front-end and back-end sub-systems work together and how to show data movement with Level 1 data flow diagrams.

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VCE Cyber Security Crossword: AI-based network security software and more (Modules 11–20) 10 clues · AI-based network security software, Intrusion detection systems (IDS), Intrusion prevention systems (IPS), Wired communications technology and more

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VCE Cyber Security Crossword: Worms to Operating system updates (Modules 31–40) 10 clues · Worms, Ransomware, Denial of service attacks, Improper credential management and more

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VCE Cyber Security Crossword: Software malware updates to RSA (Modules 41–50) 10 clues · Software malware updates, Staff procedures, Encryption and decryption, Caesar cipher and more

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VCE Cyber Security Crossword: ISM guideline: confidentiality and integrity of wireless traffic and more (Modules 61–74) 10 clues · ISM guideline: confidentiality and integrity of wireless traffic, ISM guideline: wireless network footprint, Privacy Act 1988 (Cwlth), Australian Privacy Principle 1 and more

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VCE Cyber Security Word Search: Emerging trends in cyber security and more (Modules 1–20) 20 words to find · Emerging trends in cyber security, Regulatory compliance, Zero Trust Architecture, Routers and more

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VCE Cyber Security Word Search: Local Area Networks (LANs) to Operating system updates (Modules 21–40) 20 words to find · Local Area Networks (LANs), Wide Area Networks (WANs), Wireless Personal Area Networks (WPANs), Global exposure to cyber security threats and more

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VCE Cyber Security Word Search: Software malware updates to Information Privacy Principle 5 (Modules 41–74) 22 words to find · Software malware updates, Staff procedures, Encryption and decryption, Caesar cipher and more

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Years 5–6 Digital Systems Crossword: Data and networks (Modules 21–30) 10 clues · Data transmission, Wired transmission, Wireless transmission, Bluetooth for short-range transfer and more

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Years 5–6 Digital Systems Crossword: Data and networks and Accounts, passphrases and security (Modules 31–40) 10 clues · Modem, Wireless access point, IP address, Data packets and more

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Years 5–6 Digital Systems Word Search: Data and networks and Accounts, passphrases and security (Modules 21–52) 20 words to find · Data transmission, Wired transmission, Wireless transmission, Bluetooth for short-range transfer and more

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Years 5–6 Data & Information Crossword: Analysing and visualising data and Digital footprint and privacy (Modules 31–56) 10 clues · Choosing the right chart, Column and bar charts, Line charts, Pie charts and more

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Years 5–6 Data & Information Word Search: Acquiring and manipulating data to Digital footprint and privacy (Modules 21–56) 20 words to find · Cleaning data, Formulas start with =, Arithmetic operators + - * /, The SUM function and more

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Years 7–8 Digital Systems Crossword: Data transmission and network security and Account security and cyber threats (Modules 26–74) 10 clues · Comparing wired and wireless networks, Wi-Fi range and interference, HTTPS and the padlock, Securing a Wi-Fi network and more

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Years 7–8 Digital Systems Word Search: Hardware for particular tasks to Account security and cyber threats (Modules 4–74) 20 words to find · CPU clock speed (GHz), CPU cores, HDD vs SSD performance, Storage units: KB, MB, GB, TB and more

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Years 9–10 Digital Systems Crossword: Controlling and securing access to data (Modules 13–24) 10 clues · Confidentiality, Integrity, Availability, Authentication vs authorisation and more

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Years 9–10 Digital Systems Crossword: Controlling and securing access to data and Threats and software vulnerabilities (Modules 25–40) 10 clues · Salting a password hash, Brute-force and dictionary attacks, Asset, Threat and more

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Years 9–10 Digital Systems Word Search: Controlling and securing access to data and Threats and software vulnerabilities (Modules 13–40) 20 words to find · Confidentiality, Integrity, Availability, Authentication vs authorisation and more

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VCE Data Analysis Crossword: Types and purposes of data and Data types and data characteristics (Modules 15–24) 10 clues · Open data portals and data licences, Text data: character and string, Numeric data: integer, Numeric data: floating point and more

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VCE Data Analysis Crossword: Data types and data characteristics to Privacy and the Australian Privacy Principles (Modules 25–37) 10 clues · Characteristic of data: accessibility, Characteristic of information: clarity, Characteristic of information: context, Data quality: accuracy and more

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VCE Data Analysis Crossword: Privacy and the Australian Privacy Principles and Ethics and APA referencing (Modules 38–54) 10 clues · APP 2: anonymity and pseudonymity, Holding information only for its primary purpose, Security measures to protect personal information, Critiquing a system against the Australian Privacy Principles and more

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VCE Data Analysis Word Search: Types and purposes of data and Data types and data characteristics (Modules 3–24) 20 words to find · Quantitative data, Qualitative data, Purposes of qualitative and quantitative data, Interviews to gather perspectives on a topical issue and more

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VCE Data Analysis Word Search: Data types and data characteristics to Ethics and APA referencing (Modules 25–54) 20 words to find · Characteristic of data: accessibility, Characteristic of information: clarity, Characteristic of information: context, Data quality: accuracy and more

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VCE Software Development U3O1 Crossword: Requirements and design tools to Naming conventions and internal documentation (Modules 10–47) 10 clues · Data dictionary, Writing a data dictionary entry, Designing classes with a class diagram, Object descriptions and more

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VCE Software Development U3O1 Crossword: Naming conventions and internal documentation and Pseudocode (Modules 48–71) 10 clues · Camel casing, Snake casing, Hungarian notation for variables, Hungarian notation for interface controls and more

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VCE Software Development U3O1 Crossword: Pseudocode to Data structures (Modules 72–96) 10 clues · Turning pseudocode into Python, Changing a global variable with the global keyword, Functions calling other functions, Program structure with a main() function and more

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VCE Software Development U3O1 Crossword: Data structures and Data sources and files (Modules 98–113) 10 clues · Records: fields with different data types, Accessing a record's fields by name and by field index, Choosing a data structure, Plain text (TXT) files: structure and more

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VCE Software Development U3O1 Crossword: Data sources and files to Graphical user interfaces (Modules 114–124) 10 clues · Reading an XML file with ElementTree, Validation: why data is checked on entry, Types of validation check, Existence checking in code and more

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VCE Software Development U3O1 Word Search: Requirements and design tools to Pseudocode (Modules 10–71) 21 words to find · Data dictionary, Writing a data dictionary entry, Designing classes with a class diagram, Object descriptions and more

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VCE Software Development U3O1 Word Search: Pseudocode to Data sources and files (Modules 72–113) 21 words to find · Turning pseudocode into Python, Changing a global variable with the global keyword, Functions calling other functions, Program structure with a main() function and more

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VCE Software Development U3O1 Word Search: Data sources and files to Object-oriented programming (Modules 114–141) 20 words to find · Reading an XML file with ElementTree, Validation: why data is checked on entry, Types of validation check, Existence checking in code and more

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VCE Software Development U3O2 Crossword: Analytical tools and the software requirements specification (Modules 42–51) 10 clues · Drawing a context diagram from a scenario, Data flow diagram (Level 1): processes, Data flow diagram (Level 1): data stores and entities, Data flow diagram (Level 1): data flows and more

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VCE Software Development U3O2 Crossword: Analytical tools and the software requirements specification and Legal requirements for copyright, ownership and privacy (Modules 52–71) 10 clues · Purpose of a software requirements specification (SRS), SRS content: requirements, constraints and scope, SRS content: user characteristics and technical environment, SRS content: analytical tools depicting existing systems and more

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VCE Software Development U3O2 Word Search: Needs, requirements, constraints and scope and Analytical tools and the software requirements specification (Modules 26–51) 20 words to find · Reports as a source of requirements, Analysing interview and survey responses to find needs, Economic constraints, Legal constraints and more

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VCE Software Development U3O2 Word Search: Analytical tools and the software requirements specification to Ideation and evaluating design ideas (Modules 52–85) 20 words to find · Purpose of a software requirements specification (SRS), SRS content: requirements, constraints and scope, SRS content: user characteristics and technical environment, SRS content: analytical tools depicting existing systems and more

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VCE Software Development U4O1 Crossword: Code repositories, APIs, libraries and AI assistants (Modules 115–124) 10 clues · Branches and merging, What a library is: standard vs third-party, Random numbers with import random, The math module and more

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VCE Software Development U4O1 Crossword: Code repositories, APIs, libraries and AI assistants to Beta testing (Modules 125–171) 10 clues · Keeping API keys secure, Validation versus verification, Alpha testing, Commenting out code to isolate a bug and more

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VCE Software Development U4O1 Word Search: Code repositories, APIs, libraries and AI assistants to Beta testing (Modules 115–171) 22 words to find · Branches and merging, What a library is: standard vs third-party, Random numbers with import random, The math module and more

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VCE Software Development U4O2 Crossword: Vulnerabilities and risks in insecure development environments and Third-party software, code review and combined environments (Modules 23–47) 10 clues · What makes a development environment insecure, What an API is, Risks of using APIs, Hard-coded API keys and secrets and more

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VCE Software Development U4O2 Crossword: Security controls for development practices and stored data and Threat modelling and evaluating security practices (Modules 49–72) 10 clues · Code repositories, Securing a code repository, Encrypting data at rest and in transit, Peer code review process and more

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VCE Software Development U4O2 Word Search: Organisational goals and in-house vs external development to Third-party software, code review and combined environments (Modules 1–47) 20 words to find · Goals and objectives of medium and large organisations, Security as an organisational objective, Medium and large organisations compared, In-house development: advantages and more

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VCE Software Development U4O2 Word Search: Security controls for development practices and stored data to Mitigation and improving secure development practices (Modules 49–130) 20 words to find · Code repositories, Securing a code repository, Encrypting data at rest and in transit, Peer code review process and more

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VCE Data Analytics U3O2 Crossword: Collecting primary and secondary data to Data integrity (Modules 32–75) 10 clues · Searching with keywords and search operators, Searching and filtering a data repository, One-dimensional arrays, Records: grouping fields of different data types and more

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VCE Data Analytics U3O2 Crossword: Data integrity to Evaluating designs and design tools (Modules 76–146) 10 clues · Data integrity: reasonableness, Data integrity: timeliness, Participant information statement, Consent form and more

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VCE Data Analytics U3O2 Word Search: Research questions and project planning to Evaluating designs and design tools (Modules 3–146) 21 words to find · What a research question is, Research question feature: clarity, Research question feature: measurability of data requirements, Research question feature: feasibility and more

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VCE Data Analytics U4O2 Crossword: Evaluating security with CIA and security controls to Disaster recovery plans (Modules 44–79) 10 clues · Adaptive (risk-based) authentication, Physical security controls, Data loss prevention controls, Protecting data at rest and more

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VCE Data Analytics U4O2 Word Search: Evaluating security with CIA and security controls to Victorian privacy and health records legislation (Modules 44–113) 21 words to find · Adaptive (risk-based) authentication, Physical security controls, Data loss prevention controls, Protecting data at rest and more

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Years 9–10 Data & Information Crossword: Data compression (Modules 6–16) 10 clues · Redundancy: repeated data that can be shortened, Lossless compression, Lossy compression, Run-length encoding: encoding text and more

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Years 9–10 Data & Information Crossword: Interactive content with emerging tools to Data privacy and the Australian Privacy Principles (Modules 83–132) 10 clues · Emerging digital tools, Selecting a tool for an audience and purpose, Embedding audio and video with HTML, Navigation and hotspots in interactive content and more

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Years 9–10 Data & Information Word Search: Data compression to Data privacy and the Australian Privacy Principles (Modules 6–132) 21 words to find · Redundancy: repeated data that can be shortened, Lossless compression, Lossy compression, Run-length encoding: encoding text and more

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IGCSE Computer Science Paper 1 Crossword: 1.3 Data Storage and Compression and 2.1 Data Transmission Types and Methods (Modules 86–109) 10 clues · Why compression is needed: less storage space, Why compression is needed: less bandwidth, Why compression is needed: shorter transmission time, Lossy compression permanently removes data and more

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IGCSE Computer Science Paper 1 Crossword: 2.1 Data Transmission Types and Methods (Modules 110–120) 10 clues · The three parts of a packet, Packet header, Destination address in a packet header, Originator's address in a packet header and more

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IGCSE Computer Science Paper 1 Crossword: 2.1 Data Transmission Types and Methods (Modules 121–130) 10 clues · Why packets can take different routes, Packets arriving out of order, Reordering packets at the destination, Describing the packet switching process step by step and more

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IGCSE Computer Science Paper 1 Crossword: 2.2 Methods of Error Detection (Modules 168–178) 10 clues · Checksum, Calculating a checksum, Checking a checksum at the receiver, What a checksum can and cannot detect and more

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IGCSE Computer Science Paper 1 Crossword: 2.2 Methods of Error Detection (Modules 179–188) 10 clues · Bar code check digit, Checking a number with its check digit on entry, What a check digit cannot detect, Automatic repeat query (ARQ) and more

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IGCSE Computer Science Paper 1 Crossword: 2.2 Methods of Error Detection and 2.3 Encryption (Modules 189–203) 10 clues · Choosing an error detection method for a scenario, Interception of data on a network, Plaintext, Ciphertext and more

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IGCSE Computer Science Paper 1 Crossword: 2.3 Encryption and 3.1 Computer Architecture (Modules 204–217) 10 clues · Private key, Encrypting with the recipient's public key, Decrypting with the private key, Sending a secure message with asymmetric encryption and more

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IGCSE Computer Science Paper 1 Crossword: 5.1 The Internet and the World Wide Web (Modules 464–476) 10 clues · URL part: the web page or file name, Splitting a URL into its parts, Purpose of HTTP, HTTP request and response and more

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IGCSE Computer Science Paper 1 Crossword: 5.1 The Internet and the World Wide Web (Modules 477–489) 10 clues · Browser function: navigation tools, Browser function: storing cookies, Matching a browser function to a need, Why domain names are used instead of IP addresses and more

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IGCSE Computer Science Paper 1 Crossword: 5.3 Cyber Security and 6.1 Automated Systems (Modules 553–577) 10 clues · Access levels, Anti-spyware software, What a proxy server is, How a proxy server keeps data safe and more

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IGCSE Computer Science Paper 1 Word Search: 1.3 Data Storage and Compression and 2.1 Data Transmission Types and Methods (Modules 86–120) 21 words to find · Why compression is needed: less storage space, Why compression is needed: less bandwidth, Why compression is needed: shorter transmission time, Lossy compression permanently removes data and more

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IGCSE Computer Science Paper 1 Word Search: 2.1 Data Transmission Types and Methods (Modules 121–141) 20 words to find · Why packets can take different routes, Packets arriving out of order, Reordering packets at the destination, Describing the packet switching process step by step and more

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IGCSE Computer Science Paper 1 Word Search: 2.2 Methods of Error Detection (Modules 168–188) 21 words to find · Checksum, Calculating a checksum, Checking a checksum at the receiver, What a checksum can and cannot detect and more

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IGCSE Computer Science Paper 1 Word Search: 2.2 Methods of Error Detection to 3.1 Computer Architecture (Modules 189–217) 20 words to find · Choosing an error detection method for a scenario, Interception of data on a network, Plaintext, Ciphertext and more

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IGCSE Computer Science Paper 1 Word Search: 5.1 The Internet and the World Wide Web (Modules 464–489) 21 words to find · URL part: the web page or file name, Splitting a URL into its parts, Purpose of HTTP, HTTP request and response and more

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IGCSE Computer Science Paper 1 Word Search: 5.3 Cyber Security and 6.1 Automated Systems (Modules 553–607) 21 words to find · Access levels, Anti-spyware software, What a proxy server is, How a proxy server keeps data safe and more

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ACARA Digital Technologies Years 7–8 Crossword: Wired and Wireless Networks (Modules 54–68) 10 clues · Ethernet cable, Fibre optic cable, Signal weakening over distance in cables, Wi-Fi and more

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ACARA Digital Technologies Years 7–8 Crossword: Wired and Wireless Networks and Representing Text, Images and Sound (Modules 69–124) 10 clues · Wired vs wireless: mobility and convenience, Choosing a network type for a scenario, TCP/IP: the internet's core protocols, Redundant routes keep a network working and more

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ACARA Digital Technologies Years 7–8 Crossword: Networks and Cyber Threats (Modules 674–695) 10 clues · Checking whether an account appears in a data breach, Setting up MFA with an authenticator app, Backup codes and account recovery, Why data is encrypted and more

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ACARA Digital Technologies Years 7–8 Crossword: Networks and Cyber Threats and Digital Footprints and Data Minimisation (Modules 696–726) 10 clues · Substitution cipher, Transposition cipher, Keeping an encryption key secret, Why a Caesar cipher is weak compared with modern encryption and more

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ACARA Digital Technologies Years 7–8 Word Search: Hardware and Performance and Wired and Wireless Networks (Modules 13–68) 20 words to find · Clock speed or more cores: which helps which task, How much RAM different tasks need, Choosing storage type and size together, Video memory (VRAM) and more

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ACARA Digital Technologies Years 7–8 Word Search: Wired and Wireless Networks and Representing Text, Images and Sound (Modules 69–152) 21 words to find · Wired vs wireless: mobility and convenience, Choosing a network type for a scenario, TCP/IP: the internet's core protocols, Redundant routes keep a network working and more

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ACARA Digital Technologies Years 7–8 Word Search: Programming with Control Structures and Functions (JavaScript) and Networks and Cyber Threats (Modules 635–695) 21 words to find · Random whole numbers with Math.random() and Math.floor(), Combining sequence, selection and iteration in one program, Writing a program that uses functions and control structures, Higher or lower number guessing game and more

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ACARA Digital Technologies Years 7–8 Word Search: Networks and Cyber Threats and Digital Footprints and Data Minimisation (Modules 696–770) 22 words to find · Substitution cipher, Transposition cipher, Keeping an encryption key secret, Why a Caesar cipher is weak compared with modern encryption and more

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ACARA Digital Technologies Years 9–10 Crossword: Networked Systems and Access Control (Modules 41–55) 10 clues · Routing table and next hop, Hops and time to live (TTL), The traceroute command, Building a small network in a network simulator and more

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ACARA Digital Technologies Years 9–10 Crossword: Content, Structure and Presentation and Data Compression (Modules 155–225) 10 clues · Revealing the layers with View page source and Inspect, Anatomy of a CSS rule: selector, property and value, The color and background-color properties, The text-align property and more

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ACARA Digital Technologies Years 9–10 Crossword: Cyber Security Threats and Vulnerabilities (Modules 828–859) 10 clues · Analysing a real supply chain attack, Code signing and trusted sources, Software bill of materials (SBOM), Reducing supply chain risk and more

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ACARA Digital Technologies Years 9–10 Crossword: Cyber Security Threats and Vulnerabilities (Modules 860–875) 10 clues · Frequency analysis, Transposition cipher: rail fence, CODE and CHAR functions in a spreadsheet, The MOD function in a spreadsheet and more

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ACARA Digital Technologies Years 9–10 Crossword: Cyber Security Threats and Vulnerabilities and Privacy Principles and Digital Footprints (Modules 876–944) 10 clues · Brute-forcing a Caesar cipher in Python, Vigenere cipher in Python, The XOR cipher, Base64 is encoding, not encryption and more

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ACARA Digital Technologies Years 9–10 Word Search: Networked Systems and Access Control (Modules 12–55) 20 words to find · Star network topology, Drawing a network diagram, DHCP, Private and public IP addresses and more

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ACARA Digital Technologies Years 9–10 Word Search: Networked Systems and Access Control to Data Compression (Modules 116–225) 20 words to find · Reading a permission string like rwxr-x---, Network (hardware) firewall, Firewall rule: allow or deny by port, Firewall rule: allow or deny by IP address and more

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ACARA Digital Technologies Years 9–10 Word Search: Cyber Security Threats and Vulnerabilities (Modules 810–859) 21 words to find · Zero-day vulnerabilities, Outdated versions of software, Default credentials and insecure settings, Improper credential management and more

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ACARA Digital Technologies Years 9–10 Word Search: Cyber Security Threats and Vulnerabilities and Privacy Principles and Digital Footprints (Modules 860–944) 20 words to find · Frequency analysis, Transposition cipher: rail fence, CODE and CHAR functions in a spreadsheet, The MOD function in a spreadsheet and more

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Crossword: Digital Methods for Exchanging Data (Modules 17–88) 10 clues · Gronsfeld cipher, One-time pad, Block ciphers and key size, DES and more

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Crossword: Digital Methods for Exchanging Data (Modules 89–125) 10 clues · Timely delivery, FTP, Streaming data packets, Broadcasting data packets and more

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Crossword: Digital Methods for Exchanging Data to Prototype Digital Data Exchanges (Modules 127–333) 10 clues · How the front-end and back-end exchange data, Data exchange, Data interface, Integrity and more

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Word Search: Digital Methods for Exchanging Data (Modules 17–125) 20 words to find · Gronsfeld cipher, One-time pad, Block ciphers and key size, DES and more

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Word Search: Digital Methods for Exchanging Data to Prototype Digital Data Exchanges (Modules 127–401) 21 words to find · How the front-end and back-end exchange data, Data exchange, Data interface, Integrity and more