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Network Fundamentals Flashcards

6 cards from real ICC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Network Fundamentals flashcards as text

  1. What is the purpose of the OSI model?

    Answer: To provide a standard framework for understanding network communications

    The OSI model provides a conceptual framework with seven layers that standardizes network communication functions.

  2. What is the difference between TCP and UDP?

    Answer: TCP provides reliable, ordered delivery; UDP provides faster, connectionless delivery

    TCP ensures reliable delivery through acknowledgments and retransmission, while UDP prioritizes speed without guaranteed delivery.

  3. What is an IP address?

    Answer: A unique numerical identifier assigned to each device on a network

    IP addresses uniquely identify devices on a network, enabling routing of data to the correct destination.

  4. What is the function of a firewall?

    Answer: To monitor and control incoming and outgoing network traffic based on security rules

    Firewalls act as a barrier between trusted and untrusted networks, filtering traffic according to defined security policies.

  5. What is DNS?

    Answer: Domain Name System — translates domain names to IP addresses

    DNS translates human-readable domain names into numerical IP addresses that computers use to identify each other.

  6. What is a VPN?

    Answer: A Virtual Private Network that creates an encrypted connection over a public network

    A VPN creates a secure, encrypted tunnel over a public network, protecting data privacy and enabling remote access.

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Sources & references

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  1. iccsafe.org — Retake policy, score release, renewal, score validity, test delivery, passing score, exam format, time limit · verified Oct 2026
  2. shop.iccsafe.org — Fees · verified Oct 2026