CompTIA Network+ Practice Test for Subdomain 1.5 #02

Welcome to today’s CompTIA Network+ practice test!

This practice test uses our new UI!

Today’s practice test is based on Subdomain 1.5 (Compare and contrast transmission media and transceivers) from the CompTIA Network+ N10-009 objectives.

This beginner-level practice test is inspired by the CompTIA Network+ (N10-009) exam and is designed to help you reinforce key networking concepts on a daily basis.

These questions are not official exam questions, nor are they brain dumps, but they reflect topics and scenarios relevant to the Network+ certification. Use them to test your knowledge, identify areas for improvement, and build daily cybersecurity habits.

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CompTIA Network+ Practice Test for Subdomain 1.6 #02

10 questions • Single best answer

Question 1

A network engineer at a regional hospital is planning a fiber optic cable run between two buildings located 4km apart. The hospital requires high bandwidth and minimal signal attenuation over this distance. Which type of fiber optic cable should the engineer select?

A. Multimode fiber with an OM4 rating, because it supports longer runs and higher bandwidth than single-mode B. Single-mode fiber, because it uses a narrower core to transmit a single light ray and supports longer distances with less attenuation C. Twinaxial DAC cable, because it provides lower latency than fiber for inter-building connections D. Multimode fiber with an OM1 rating, because it uses multiple light rays and is optimized for long-distance runs

Question 2

A data center technician is upgrading the uplink ports between two top-of-rack switches to achieve 40Gbps connectivity. The current SFP+ transceivers only support up to 10Gbps per port. Which transceiver form factor should the technician use to meet the 40Gbps requirement?

A. SFP (standard small form-factor pluggable), because it is backward compatible with higher speeds B. SFP+ (enhanced small form-factor pluggable), because it is designed for 40Gbps uplinks C. QSFP (quad small form-factor pluggable), because it bonds four lanes to support 40Gbps D. RJ45 copper transceiver module, because copper supports higher bandwidth at short distances

Question 3

A technician is tasked with running Cat6 cable through the air handling space above a suspended ceiling in an office building. The building manager insists that fire and safety codes must be strictly followed. Which type of cable must the technician use in this space?

A. Non-plenum PVC cable, because it is more flexible and easier to route through confined spaces B. Plenum-rated cable, because it is required in air circulation spaces and produces less toxic smoke when burned C. Shielded twisted pair (STP), because the shielding provides protection against heat in HVAC environments D. Coaxial cable, because it carries a default rating for use in air return spaces

Question 4

A help desk technician arrives at a user's workstation to troubleshoot a connectivity issue and notices that the cable plugged into the wall jack uses a connector with only 4 contacts and is narrower than a standard network cable connector. Which connector type is this, and for what purpose is it most commonly used?

A. RJ45, commonly used for Ethernet network connections at 1Gbps and above B. RJ11, commonly used for telephone and analog modem connections C. LC fiber connector, used for single-mode fiber patch connections D. BNC connector, used for coaxial cable connections on legacy Ethernet segments

Question 5

A junior network administrator is evaluating wireless access points for deployment in a high-density conference center. The facility requires support for the 6 GHz band and efficient multi-user operation across dozens of simultaneous clients. Which 802.11 standard should the administrator specify?

A. 802.11n (Wi-Fi 4), because it introduced MIMO technology for improved multi-user performance B. 802.11ac (Wi-Fi 5), because it operates in the 5 GHz band and supports MU-MIMO C. 802.11ax (Wi-Fi 6/6E), because it supports the 6 GHz band and uses OFDMA for high-density environments D. 802.11g, because it offers backward compatibility with all legacy wireless clients

Question 6

A network engineer at a financial services firm needs to connect a server to the top-of-rack switch located 3 meters away. Management requires the lowest-latency, most cost-effective solution for this short-distance 10Gbps link. Which cable type should the engineer use?

A. Single-mode fiber with SFP+ transceivers, because it provides the highest bandwidth density B. Category 6A copper twisted pair with RJ45 connectors, because it natively supports 10Gbps C. Direct attach copper (DAC) twinaxial cable, because it is optimized for short-distance, high-speed data center connections D. Multimode fiber with LC connectors, because it reduces latency compared to copper at any distance

Question 7

A technician is visiting a customer site to connect a cable broadband Internet circuit delivered by the ISP over coaxial cable. The technician needs to connect the incoming coaxial drop to the customer's cable modem. Which connector type is used on this coaxial interface?

A. RJ45, because it is the standard connector for broadband customer premise equipment B. ST (straight tip), because it is compatible with the coaxial cable used by cable ISPs C. F-type, because it is the standard threaded coaxial connector used in cable broadband installations D. BNC (Bayonet Neill-Concelman), because it is the coaxial connector used for high-frequency ISP circuits

Question 8

A field technician is deploying a remote environmental monitoring device in a rural area with no wired Internet access. The location has clear line of sight to the sky but falls in a region with spotty cellular coverage. The device must transmit small amounts of sensor data reliably, and latency is not a primary concern. Which wireless WAN connectivity option is most appropriate?

A. 802.11ac Wi-Fi, because it provides sufficient bandwidth for small sensor payloads B. Cellular (4G LTE), because it provides the most reliable coverage for IoT devices in any environment C. Satellite, because it provides coverage in remote areas without relying on terrestrial cellular infrastructure D. 802.11ax (Wi-Fi 6), because it supports MU-MIMO for reliable multi-sensor communication

Question 9

A network engineer is installing a high-density fiber patch panel in a new data center. The design requires a single connector interface that terminates 12 fibers simultaneously to support parallel optic trunk cables between spine and leaf switches. Which fiber connector type should the engineer specify?

A. SC (subscriber connector), because it is the most widely deployed fiber connector in enterprise environments B. LC (local connector), because it is a small form-factor connector designed for high-density patching C. ST (straight tip), because its bayonet mechanism provides a secure multi-fiber termination D. MPO (multi-fiber push on), because it is designed to terminate multiple fibers simultaneously in a single connector

Question 10

A network administrator is documenting an existing wired infrastructure and finds that Cat5e cabling is currently supporting 100Mbps connections. A planned application upgrade requires 1Gbps to every endpoint. The existing switch ports and NICs already support Gigabit Ethernet. Which IEEE 802.3 standard governs 1Gbps Ethernet over Cat5e copper?

A. 802.3u (Fast Ethernet, 100BASE-TX), which defines 100Mbps over Cat5 copper B. 802.3ab (Gigabit Ethernet, 1000BASE-T), which defines 1Gbps over Cat5e or better copper C. 802.3ae (10 Gigabit Ethernet, 10GBASE-SR), which defines 10Gbps over multimode fiber D. 802.3bz (2.5GBASE-T / 5GBASE-T), which defines intermediate speeds over Cat5e copper

CompTIA Network+ Practice Test for Subdomain 1.5 #02

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