ACARA 9-10 Digital Technologies: Network protocols and reliable data transmission
Students learn how the TCP/IP layers, ports and protocols such as HTTP and email carry data, and how error checking, ARQ and hashing confirm that it arrived intact.
One content description (AC9TDI10K01) from the full ACARA Digital Technologies Years 9–10 — Networked Systems and Access Control journey. All 25 modules below are in that journey too, with the same content — add just these to a class, or the whole strand.
Modules (25)
1
Network protocols
2
The TCP/IP four-layer model
3
Internet Protocol (IP)
4
Transmission Control Protocol (TCP)
5
User Datagram Protocol (UDP)
6
Port numbers
7
Email protocols: SMTP and IMAP
8
Purpose of HTTP
9
HTTP request and response
10
From URL to web page: the full sequence
11
Why data is checked after transmission
12
Interference as the cause of transmission errors
13
Identifying loss, gain and change in an example
14
Error detection versus error correction
15
Parity bit
16
Checksum
17
Calculating a checksum
18
Echo check
19
Automatic repeat query (ARQ)
20
Positive acknowledgement
21
Negative acknowledgement
22
Timeout
23
The ARQ process step by step
24
Hashing functions
25
Using hashes to check data integrity
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