ACARA Digital Technologies Years 9–10 Word Scramble: Networked Systems and Access Control (Modules 41–55)
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Word scramble
Unscramble the letters and write each key term on the line.
1
TIROUNG EBTLA
A list a router uses to pick where to send each packet. Each row has a destination network and a next hop. The default route 0.0.0.0 is used when no other row matches.
2
LTT
Time to live: a number in a packet that drops by 1 at each router hop. When it reaches 0 the packet is discarded, so a packet stuck in a loop cannot circle forever.
3
EARTRTC AMCOXLE.MEP
Windows command (traceroute on Mac and Linux) that lists each router hop between your device and a site, with the time taken to reach each one. Stars (*) mean no reply.
4
WTKNROE MSTLIROAU
Software like Filius where you place devices, set each IP address and subnet mask, connect them with cables, then send a ping to test they can reach each other.
5
CIP/PT EDOML
A four-layer plan for network communication: application (HTTP), transport (TCP, UDP), internet (IP) and network access (Ethernet, Wi-Fi). Each layer has its own job.
6
TRNNETIE OPTOCLOR (PI)
The protocol that puts source and destination IP addresses on each packet so routers can deliver it. It is best-effort: it does not guarantee a packet arrives.
7
CPT
Transmission Control Protocol. It sets up a connection, numbers packets, checks each one arrived and resends any missing, so data arrives complete and in order. Web pages and email use it.
8
PDU
User Datagram Protocol: sends packets with no connection and no resending. It is faster than TCP but data may be lost, so it suits live video, voice calls and online games.
9
692.101.8.11:08
An IP address followed by a port number. The IP finds the device and the port (80 = HTTP) tells it which service gets the data. Others: 443 HTTPS, 25 SMTP, 53 DNS.
10
MTPS NAD APIM
SMTP sends email from a client to a mail server and between servers. IMAP (or POP3) lets a client read email stored on the server. Each protocol has a different job.
Answer Key
ACARA Digital Technologies Years 9–10 · Modules 41–55
1TIROUNG EBTLA → routing table — A list a router uses to pick where to send each packet. Each row has a destination network and a next hop. The default route 0.0.0.0 is used when no other row matches.
2LTT → TTL — Time to live: a number in a packet that drops by 1 at each router hop. When it reaches 0 the packet is discarded, so a packet stuck in a loop cannot circle forever.
3EARTRTC AMCOXLE.MEP → tracert example.com — Windows command (traceroute on Mac and Linux) that lists each router hop between your device and a site, with the time taken to reach each one. Stars (*) mean no reply.
4WTKNROE MSTLIROAU → network simulator — Software like Filius where you place devices, set each IP address and subnet mask, connect them with cables, then send a ping to test they can reach each other.
5CIP/PT EDOML → TCP/IP model — A four-layer plan for network communication: application (HTTP), transport (TCP, UDP), internet (IP) and network access (Ethernet, Wi-Fi). Each layer has its own job.
6TRNNETIE OPTOCLOR (PI) → Internet Protocol (IP) — The protocol that puts source and destination IP addresses on each packet so routers can deliver it. It is best-effort: it does not guarantee a packet arrives.
7CPT → TCP — Transmission Control Protocol. It sets up a connection, numbers packets, checks each one arrived and resends any missing, so data arrives complete and in order. Web pages and email use it.
8PDU → UDP — User Datagram Protocol: sends packets with no connection and no resending. It is faster than TCP but data may be lost, so it suits live video, voice calls and online games.
9692.101.8.11:08 → 192.168.1.10:80 — An IP address followed by a port number. The IP finds the device and the port (80 = HTTP) tells it which service gets the data. Others: 443 HTTPS, 25 SMTP, 53 DNS.
10MTPS NAD APIM → SMTP and IMAP — SMTP sends email from a client to a mail server and between servers. IMAP (or POP3) lets a client read email stored on the server. Each protocol has a different job.