Network Fundamentals Flashcards
6 cards from real CCS 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
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.
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.
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.
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.
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.
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.