CompTIA Network+ Practice Test for Subdomain 1.5 #01

Your organization is installing new cabling infrastructure in a recently acquired data center facility, and the network architect specifies that all inter-building backbone runs must support 10 Gbps over distances of up to 40 kilometers through an outdoor underground conduit connecting two campus buildings. The cabling team has narrowed the choice down to fiber optic options and must determine which fiber type is appropriate for this long-distance, high-speed requirement before placing the purchase order. The installation contractor is awaiting written approval of the cable specification to proceed with procurement. Which type of fiber optic cable uses a single light propagation path with a narrow core diameter and is engineered to support long-distance transmissions measured in tens of kilometers?

A facilities team is preparing to run new Cat6A network cabling through the air-handling space above the drop ceilings throughout a renovated corporate office building. The network engineer reviewing the installation plan flags that the standard PVC-jacketed cable listed in the original materials specification is not permitted in this particular space under the applicable fire and building codes. Before the cable pull begins, the engineer must substitute the appropriate cable type to comply with code requirements and reduce the emission of toxic gases and smoke in the event of a fire in the air circulation space. The project manager asks the engineer to confirm the exact specification required before approving the updated materials purchase. Which cable jacket type is specifically required when running network cabling inside plenum air-handling spaces above drop ceilings?

A data center engineer is upgrading the uplink connections between top-of-rack switches and the aggregation layer in the spine-and-leaf architecture of a financial services company. The current SFP+ transceivers in the uplink ports support only 10 Gbps per port, and the team needs to increase per-link throughput to 40 Gbps without replacing the switch chassis. The engineer confirms in the switch hardware manual that the uplink slots support a higher-density transceiver module that combines multiple 10 Gbps electrical lanes into a single pluggable form factor. The procurement team needs the exact transceiver form factor designation before placing the order. Which transceiver form factor achieves 40 Gbps or higher aggregate bandwidth by combining multiple internal 10 Gbps lanes within a single, higher-density pluggable module?

A wireless network engineer at a corporate campus is planning a new Wi-Fi deployment to reduce co-channel interference from neighboring networks and provide substantially higher throughput to newer client devices. The engineer wants to deploy access points that can utilize the 6 GHz frequency band in addition to the existing 2.4 GHz and 5 GHz bands. The existing installed access points in the building support only dual-band operation and will need to be replaced with tri-band models before the new frequency can be used. The procurement manager requests the specific 802.11 standard designation before approving the access point replacement budget. Which 802.11 wireless standard introduced support for the 6 GHz frequency band as a key new feature of its specification?

A junior network engineer is assisting with a fiber optic cabling installation in a new office building and is labeling fiber patch panels at the intermediate distribution frame. The engineer examines two types of connectors in the supplied fiber optic cable kit: one has a small, square-bodied push-pull design with a spring-loaded latch that clicks audibly into the transceiver port, while the other has a larger, cylindrical body with a push-pull or bayonet-style locking mechanism and is commonly associated with older enterprise and telecommunications cabling plants. The engineer must correctly label each connector type in the as-built documentation. Which fiber optic connector features a compact, square-bodied push-pull design with a latch mechanism and is widely used in modern enterprise data center patch panels due to its small form factor and high port density?

A field technician is dispatched to a small business location to install a broadband internet connection delivered over a coaxial cable run from the street-side ISP demarcation point to the customer premises equipment. While terminating the cable at the wall outlet and at the cable modem, the technician identifies that the coaxial connector used in this broadband installation attaches via a threaded screw mechanism that rotates to compress and lock onto the connector barrel, providing a secure, weather-resistant connection. The technician needs to document the connector type correctly in the site survey report before completing the installation. Which connector type is the standard threaded coaxial connector used in broadband cable internet and cable television installations in residential and small business environments?

A network engineer at a financial trading firm is designing the server-to-switch interconnect within a high-density colocation cabinet where ultra-low latency is a critical requirement for order execution systems. The engineer wants to avoid the power consumption and additional serialization latency introduced by optical transceiver modules and instead use a passive copper interconnect with integrated connectors at each end. The solution must support 25 Gbps per lane over a maximum distance of five meters and must be compatible with the QSFP28 ports on the top-of-rack switch. Which cable assembly uses a fixed copper conductor with integrated transceivers at each end, is designed specifically for short intra-rack and inter-rack connections, and eliminates the need for separate pluggable optical modules?

A help desk analyst receives a trouble ticket from a user reporting that a desk phone connected to a wall jack has no dial tone and appears completely non-functional. The analyst visits the workstation area and observes that the cable plugged into the telephone handset uses a narrow, rectangular modular connector that is noticeably smaller than the connectors used on the nearby workstations' Ethernet patch cables. The analyst needs to correctly identify the connector type in the ticket before escalating to the voice team for resolution. Which modular connector type is used for standard analog telephone connections and is distinctly smaller and narrower than the connector type used for Ethernet data cabling to workstations?

The network team at a manufacturing company is planning a structured cabling upgrade for a new production floor where workstations running real-time machine telemetry applications must operate at 10 Gbps. The cabling runs will average approximately 55 meters from the IDF patch panel to workstation outlets, and the team wants to use copper twisted-pair cable to avoid the cost and complexity of fiber to the desktop. The facilities manager has asked the network engineer to specify the minimum copper cable category that meets the 10 Gbps speed requirement at the planned run lengths before approving the installation budget. Which copper twisted-pair cable category is the minimum standard rated to reliably support 10 Gbps Ethernet (10GBASE-T) over horizontal cable runs in compliance with IEEE 802.3an requirements?

A network architect is evaluating wide area connectivity options for a new remote oil extraction site located in a desert region several hundred kilometers from the nearest city. There is no terrestrial broadband infrastructure at the location, and no cellular towers are within range to provide 4G LTE or 5G coverage. The site must maintain persistent internet connectivity to upload sensor telemetry data and support encrypted remote management sessions for industrial control equipment. The architect must recommend a WAN technology that does not depend on ground-based cable infrastructure or terrestrial cell towers and can deliver connectivity to the site regardless of its geographic isolation. Which WAN connectivity technology uses orbiting platforms in space rather than terrestrial infrastructure to deliver internet access to locations where both broadband and cellular service are unavailable?