Free Cables, Connectors, and Adapters practice questions
10 free 220-1201 questions on Cables, Connectors, and Adapters, each with a full explanation — no account needed. This section sits in the Hardware part of the exam. Answer every question to see your score, then read the lessons below for anything you missed.
A technician is troubleshooting intermittent network errors in a manufacturing area where Ethernet cables run alongside large motors and fluorescent lighting. The existing Cat6 links test clean for continuity but still show high retransmissions under load. The building cannot guarantee proper grounding upgrades in the near term. Which cabling choice is the safest replacement to reduce noise-related issues without risking worse performance?
Shielded cabling only improves noise resistance when the shield is continuous and properly grounded. Poorly grounded shielding can act like an antenna and worsen interference. In a site where correct grounding cannot be guaranteed, unshielded twisted pair with good installation practices is the safer and more reliable choice, especially when upgrading to a higher category with better noise margins.
A network installer is adding new Ethernet drops above a suspended ceiling that is used as a return air space. The cables pass inspection for performance, but the fire marshal flags the installation during a safety review. Which cable characteristic most likely caused the inspection failure?
Plenum spaces require cable jackets designed to limit smoke and toxic fumes during a fire. Using general-purpose or riser-rated jackets in air-handling areas can fail inspection even if the network functions correctly. Jacket ratings address safety and code compliance, not bandwidth or wiring standards.
A technician is asked to run Ethernet connectivity to an outdoor kiosk across a landscaped area. The cable will be placed underground and partially exposed to sunlight near the building entry point. Which cable type best addresses these environmental conditions?
Direct-burial cable has a gel-filled or water-blocked core and a thick UV-resistant polyethylene jacket, so it tolerates soil moisture, temperature swings, and sunlight at the entry point. Standard PVC-jacketed Cat6 absorbs moisture and cracks in sunlight and will fail within a season. Plenum rating is about low-smoke behaviour inside building air-handling spaces and offers no protection underground. Indoor STP in shallow conduit still has an indoor jacket, and conduit alone does not keep water out.
A support ticket reports that a newly terminated wall jack passes a basic continuity test but negotiates only 100 Mbps instead of 1 Gbps and drops packets under load. The cable category and length are correct. Which termination issue best explains these symptoms?
A split pair lands each wire on the correct pin, so a continuity or wire-map tester passes, but one signal pair is carried on wires from two different twists; the twist no longer cancels noise, crosstalk rises, and the link drops to 100 Mbps or loses packets under load. A T568A-to-T568B mismatch makes a crossover cable, which a wire-map tester shows as swapped pairs, and a modern auto-MDI-X port would still link at full speed. A jacket outside the strain relief is a durability problem, not a signal problem. A plug rated for stranded conductors on solid wire causes intermittent open pins, which would fail the continuity test.
An organization needs a network link between two buildings on the same campus. The distance exceeds typical copper limits, and the path runs near heavy electrical equipment. Which cabling choice best fits this scenario based on distance and interference resistance?
Single-mode fiber is designed for long-distance links and is highly resistant to electromagnetic interference because it carries light instead of electrical signals. These traits make it the preferred choice for building-to-building and campus backbone connections where copper distance limits and noise are concerns.
A user reports that a new external SSD connects successfully but transfers data much slower than expected. The laptop port is marked with a blue insert and an SS logo, and the drive advertises multi-gigabit speeds. The user reused an older cable from a basic printer. What is the most likely cause of the performance issue?
USB 3.x ports are backward compatible with older cables, but the cable determines the maximum data rate. Using a USB 2.0-grade cable will cap transfers at much lower speeds even when both the port and the device support faster USB 3.x performance.
A workstation intermittently disconnects several USB devices connected through a small desktop hub. The devices include a webcam, an external drive, and a headset. All devices reconnect when plugged in individually. What is the most likely limitation causing the issue?
Bus-powered USB hubs draw power from the host system and can struggle to supply sufficient power when multiple peripherals are attached. This often causes devices to disconnect even though they function normally when connected directly to the computer.
A technician is setting up a managed network switch that has no IP configuration and cannot be reached over the network. The technician is using a modern laptop with only USB ports. Which solution best allows initial access to the switch for configuration?
Initial configuration and recovery of managed switches often rely on serial console access. Modern laptops typically require a USB-to-serial adapter to interface with RS-232-style console connections, making this the correct approach for accessing devices without network connectivity.
A technician needs to identify a cable connected to legacy video equipment in a security office. The cable has a single copper core, thick shielding, and a twist-lock connector. Which cable type and use case best match this description?
Coaxial cables are identifiable by their single core conductor, layered shielding, and specialized connectors. Twist-lock BNC connectors are commonly associated with legacy CCTV and video equipment, making this the correct identification for the scenario.
A help desk ticket states that a Thunderbolt docking station powers a laptop but fails to drive multiple external monitors. The user confirms the laptop port has a lightning bolt icon. Which factor most likely explains the display failure?
Thunderbolt ports often share the USB-C connector shape, but not all USB-C cables support Thunderbolt features. Using a non-Thunderbolt cable can allow charging while preventing high-bandwidth functions such as multi-display output from working correctly.
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Every lesson that covers Cables, Connectors, and Adapters on the 220-1201 exam.