Explain a Domain Lookup
Look up the exact name in the supplied directory and distinguish a missing record from a known address.
About 18 minutes, plus any extended practice
Open lesson 1Address and Request Network Resources
For https://example.invalid/notes?mode=print, identify host,path,query. Interpret a 404 response and state why HTTPS would not establish a claim’s truth.
Before you begin
- Distinguish local/remote resources and read label tables.
Choose by skill rather than age alone. Read with an adult when useful, revisit a lesson, or explore another grade.
Follow the lesson sequence
Read the Parts of a Web Address
Identify the requested component by its role in the supplied address.
About 18 minutes, plus any extended practice
Open lesson 2Interpret a Stated HTTP Response
Use the supplied status key and separate a response code from task completion.
About 18 minutes, plus any extended practice
Open lesson 3State What HTTPS Does and Does Not Show
Identify whether a conclusion concerns transport protection, content truth or access permission.
About 18 minutes, plus any extended practice
Open lesson 4Review and transfer
After the lessons, try 4 new review cases and a practical task. Each answer has an explanation and a link back to the related lesson.
Open the unit reviewGuest answers are temporary. Keep your own paper or document; this unit does not certify completion or record a school grade.
Topic references
- 2026 CSTA PK–12 Computer Science Standards: topic reference — Systems & Security
These references informed the topic selection. They do not certify complete standards alignment.