character: Cyber Sam
topic: Understanding Firewalls
grade: 9
subject: Computer Science
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character: Cyber Sam
topic: Network Security Basics
grade: 9
subject: Computer Science
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character: Cyber Sam
topic: Types of Firewalls
grade: 9
subject: Computer Science
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character: Cyber Sam
topic: How Firewalls Protect Networks
grade: 9
subject: Computer Science
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