Network+ Concepts Quiz: Can You Master OSI Model & Beyond?

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Quizzes Created: 7097 | Total Attempts: 80,150
| Questions: 20 | Updated: Jul 1, 2026
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1. What does DNS stand for?

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About This Quiz
Network+ Concepts Quiz: Can You Master OSI Model & Beyond? - Quiz

Test your mastery of Networking Concepts (Network+) fundamentals with this medium-level college quiz. Covering the OSI model, TCP\/IP protocols, network devices, and essential routing and switching concepts, this quiz evaluates your understanding of core networking principles. Ideal for CompTIA Network+ certification prep or networking coursework review.

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2. What is the maximum transmission unit (MTU) size on most Ethernet networks?

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3. Which command is used to test connectivity between hosts?

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4. What does the acronym CIDR represent?

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5. TCP is a ______ protocol.

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6. Which of the following best describes a firewall?

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7. What is the purpose of DHCP?

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8. Which device connects different networks and makes routing decisions?

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9. What is VLAN primarily used for?

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10. Which protocol uses port 443 by default?

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11. Which OSI layer is responsible for logical addressing and routing?

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12. Which layer of the OSI model handles encryption and decryption?

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13. What is the default subnet mask for a Class C IP address?

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14. Which protocol is used for secure remote access?

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15. A router operates at which OSI layer?

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16. Which of the following is a valid IPv4 private address range?

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17. What is the primary purpose of ARP?

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18. A switch operates at which OSI layer?

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19. Which protocol operates at the Transport layer and ensures reliable delivery?

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20. What is the primary function of the Data Link layer?

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What does DNS stand for?
What is the maximum transmission unit (MTU) size on most Ethernet...
Which command is used to test connectivity between hosts?
What does the acronym CIDR represent?
TCP is a ______ protocol.
Which of the following best describes a firewall?
What is the purpose of DHCP?
Which device connects different networks and makes routing decisions?
What is VLAN primarily used for?
Which protocol uses port 443 by default?
Which OSI layer is responsible for logical addressing and routing?
Which layer of the OSI model handles encryption and decryption?
What is the default subnet mask for a Class C IP address?
Which protocol is used for secure remote access?
A router operates at which OSI layer?
Which of the following is a valid IPv4 private address range?
What is the primary purpose of ARP?
A switch operates at which OSI layer?
Which protocol operates at the Transport layer and ensures reliable...
What is the primary function of the Data Link layer?
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