ACARA Digital Technologies Years 9–10 Word Scramble: Networked Systems and Access Control and Content, Structure and Presentation (Modules 116–154)
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Word scramble
Unscramble the letters and write each key term on the line.
1
XRXW-R---
Three groups of three letters for owner, group and others: r is read, w is write, x is execute and - means not allowed. Here the owner has rwx, group r-x, others nothing.
2
EWORKTN LIRALWFE
A device or router feature between a local network and the internet that filters inbound and outbound traffic for every device behind it, not just one.
3
WALOL NBUIOND PCT 344
A firewall rule with an action (allow), a direction (inbound) and a port (TCP 443). It lets incoming web traffic through. A deny rule on a port, such as 23, blocks it.
4
NDEY ROMF 208.561.1.91
A firewall rule that blocks traffic from one IP address. Use a range like 192.168.1.0/24 to match a whole network, and allow to let only trusted addresses, such as the school network, in.
5
EAUTLFD YEND
A firewall checks rules from the top and uses the first match. A final ______ rule blocks anything not allowed by an earlier rule.
6
AMC LGINIFTER
A router setting that only lets devices with MAC addresses on an allowed list join. It is easy to set up but weak, because a MAC address can be copied (spoofed).
7
CSSECA TCROLNO
Naming the data to protect, then choosing controls like login, permissions, a firewall or encryption, and justifying each one with the risk it reduces.
8
VRISJPCTAA
The programming language that adds behaviour to a web page, such as reacting to a click, on top of its HTML content and structure and its CSS presentation.
9
EBW EGPA ESRLYA
Every part of a page is content (words, images), structure (tags), presentation (CSS colour, layout) or behaviour (JavaScript). Each layer can be changed on its own.
Answer Key
ACARA Digital Technologies Years 9–10 · Modules 116–154
1XRXW-R--- → rwxr-x--- — Three groups of three letters for owner, group and others: r is read, w is write, x is execute and - means not allowed. Here the owner has rwx, group r-x, others nothing.
2EWORKTN LIRALWFE → network firewall — A device or router feature between a local network and the internet that filters inbound and outbound traffic for every device behind it, not just one.
3WALOL NBUIOND PCT 344 → allow inbound TCP 443 — A firewall rule with an action (allow), a direction (inbound) and a port (TCP 443). It lets incoming web traffic through. A deny rule on a port, such as 23, blocks it.
4NDEY ROMF 208.561.1.91 → deny from 192.168.1.50 — A firewall rule that blocks traffic from one IP address. Use a range like 192.168.1.0/24 to match a whole network, and allow to let only trusted addresses, such as the school network, in.
5EAUTLFD YEND → default deny — A firewall checks rules from the top and uses the first match. A final default deny rule blocks anything not allowed by an earlier rule.
6AMC LGINIFTER → MAC filtering — A router setting that only lets devices with MAC addresses on an allowed list join. It is easy to set up but weak, because a MAC address can be copied (spoofed).
7CSSECA TCROLNO → access control — Naming the data to protect, then choosing controls like login, permissions, a firewall or encryption, and justifying each one with the risk it reduces.
8VRISJPCTAA → JavaScript — The programming language that adds behaviour to a web page, such as reacting to a click, on top of its HTML content and structure and its CSS presentation.
9EBW EGPA ESRLYA → web page layers — Every part of a page is content (words, images), structure (tags), presentation (CSS colour, layout) or behaviour (JavaScript). Each layer can be changed on its own.