Ohio Network Technician Practice Exam

Ohio Network Technician Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2025|2026 Q&A | Instant Download Pdf

• Which layer of the OSI model is responsible for end-to-end

communication?

• Data Link
• Network
• Transport
• Session

Rationale: The Transport layer manages end-to-end data delivery and

reliability (TCP/UDP).

• What device operates at Layer 2 of the OSI model?
• Router
• Switch
• Hub 1 / 3

• Gateway

Rationale: Switches use MAC addresses to forward frames at Layer 2.

• Which protocol translates domain names into IP addresses?

A. HTTP

B. ARP

C. DNS

D. DHCP

Rationale: DNS resolves human-readable names into IP addresses.

• Which cable type is most resistant to EMI?

A. UTP

• Fiber-optic

C. STP

• Coaxial

Rationale: Fiber uses light, not electricity, so it's immune to EMI.

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

A. 255.0.0.0

B. 255.255.0.0

C. 255.255.255.0

D. 255.255.255.128

Rationale: Class C networks have 24 bits for the network portion.

• Which command shows active TCP/IP connections on Windows?
• ping
• tracert 2 / 3

• netstat
• ipconfig

Rationale: “netstat” lists active connections and listening ports.

• Which connector is used on Cat6 Ethernet cables?

A. BNC

• SC

C. RJ45

• LC

Rationale: RJ45 connectors are standard for twisted-pair Ethernet.

• Which IP address is reserved for loopback testing?

A. 0.0.0.0

B. 127.0.0.1

C. 255.255.255.255

D. 169.254.0.1

Rationale: 127.0.0.1 refers to the local host for loopback diagnostics.

• What is the maximum length for a Cat5e Ethernet cable?
• 50 meters
• 100 meters
• 150 meters
• 200 meters

Rationale: The IEEE standard limits twisted-pair Ethernet to 100 m.

• Which protocol dynamically assigns IP addresses?
• ARP
• / 3