Network Cabling ALL VERSIONS 2025 | LATEST AND ACCURATE REAL EXAM QUESTIONS WITH DETAILED ANSWERS | VERIFIED FOR GUARANTEED PASS | LATEST UPDATE

A junior administrator is having issues connecting to a router's console port using a TIA/EIA 568B standard cable and a USB serial to RJ-45 adapter. What is the issue? A. The terminal settings are incorrect B. The cable must be a crossover cable C. The cable must be a rollover cable D. The adapter is incompatible Rationale: A rollover cable is required to connect a PC to a router’s console port. What tool in a fiber termination kit is used for cutting a clean slice through fiber strands? A. Wire stripper B. Optical tester C. Fiber cleaver D. Scoring pen Rationale: A fiber cleaver ensures a clean cut of the fiber strand for optimal connectivity. Bidirectional transceivers use what technology to separate data in each direction? A. Time division multiplexing B. Wavelength division multiplexing C. Carrier sense D. Signal polarity inversion Rationale: WDM separates signals by using different wavelengths for each direction. What is the maximum segment distance for 10GBase-ER and 10GBase-EW on single mode fiber? A. 10 km B. 25 km C. 40 km D. 100 km Rationale: Both standards support up to 40 kilometers on single-mode fiber. What type of cable is commonly used for broadband cable internet and TV over long distances? A. RG-59 B. RG-6 C. STP D. Cat 6a Rationale: RG-6 coaxial cable is standard for broadband cable applications. What does the RG rating on coaxial cable measure? A. Resistance grade B. Shielding and conducting materials C. Radiant gain D. Return gradient Rationale: RG rating refers to construction materials and physical characteristics of the cable. What unit is used to measure noise that degrades network signals? A. Watts B. Ohms C. Decibels D. Joules Rationale: Signal degradation from noise is measured in decibels (dB). PoE+ devices follow which IEEE standard? A. 802.3af B. 802.3an C. 802.3at D. 802.11ax Rationale: IEEE 802.3at is the standard for PoE+ (higher power delivery). Which standard defines telephone connections? A. RJ-45 B. RJ-11 C. RJ-25 D. RJ-61 Rationale: RJ-11 is the standard jack for traditional telephone connections. What wavelength does 1000Base-LX utilize? A. 850 nm B. 1300 nm C. 1550 nm D. 750 nm Rationale: 1000Base-LX uses 1300 nanometer wavelength for transmission. What type of multiplexing uses adjustable time slots based on need? A. Frequency division B. Statistical time division multiplexing C. Wavelength division D. Fixed TDM Rationale: STDM dynamically allocates time slots based on data demand. What is the fastest Ethernet standard supported on twisted-pair cabling? A. 1000Base-T B. 10GBase-T C. 100Base-T D. 40GBase-T Rationale: 10GBase-T provides up to 10 Gbps on twisted-pair cabling. What is the industry standard angle for an Angle Polished Connector (APC)? A. 0 degrees B. 8 degrees C. 15 degrees D. 45 degrees Rationale: APC connectors are polished at an 8-degree angle to reduce signal loss. What is the maximum throughput of a CAT6 cable? A. 1 Gbps B. 10 Gbps C. 5 Gbps D. 100 Mbps Rationale: CAT6 supports up to 10 Gbps over shorter distances. What is the minimum UTP category required for Gigabit Ethernet? A. Cat 3 B. Cat 4 C. Cat 5e D. Cat 6 Rationale: Cat 5e is rated for Gigabit Ethernet performance. What tool can you use to measure voltage on a cable? A. Tone generator B. Cable tester C. Multimeter D. OTDR Rationale: A multimeter measures electrical parameters including voltage. Which multiplexing technology is cost-effective due to wider frequency spacing? A. Dense WDM B. Coarse WDM C. Time division D. Frequency hopping Rationale: CWDM is less expensive than DWDM due to wider channel spacing. What does the term "jitter" describe in networking? A. A dropped connection B. Variation in packet delay C. Signal attenuation D. Excessive bandwidth Rationale: Jitter is the variance in arrival times of data packets. What describes a transmission flaw caused by attenuation? A. Crossed wires B. Signal loss over distance C. EMI interference D. Full-duplex conflict Rationale: Attenuation is the weakening of signal over a long distance. Which statement about Power over Ethernet is inaccurate? A. PoE works over copper cables B. PoE requires CAT6 or better cable C. PoE delivers power and data D. PoE follows IEEE standards Rationale: PoE can run on CAT5e; CAT6 is not required. What is the correct wire color order in a T568B pinout, starting at pin 1? A. White/green, green, white/orange... B. White/orange, orange, white/green, blue, white/blue, green, white/brown, brown C. Green, white/green, orange... D. White/blue, blue, white/orange... Rationale: This is the T568B standard color sequence. Why must coaxial cable connectors match the cable type? A. Aesthetic purposes B. To match impedance and prevent errors C. Reduce grounding needs D. Prevent short circuits Rationale: Impedance mismatch causes signal degradation and errors. What cabling standard must be used in federal buildings? A. ISO 11801 B. TIA/EIA 568A C. TIA/EIA 568B D. IEEE 802.3 Rationale: TIA/EIA 568A is mandated for government installations. What is the most commonly used fiber connector for 1.25-mm ferrule size? A. SC B. ST C. LC (Local Connector) D. MT-RJ Rationale: LC connectors are designed for 1.25-mm ferrules. Which transmission type uses digital signaling on a single wire? A. Broadband B. Baseband C. Multiband D. Spread spectrum Rationale: Baseband transmits digital signals directly on the medium. Which transmission type uses analog signals? A. Baseband B. Broadband C. Uniband D. Duplexband Rationale: Broadband transmission uses analog modulation over a range of frequencies. Baseband transmission uses what to send multiple signals? A. FDM B. CWDM C. Time Division Multiplexing (TDM) D. FDMA Rationale: TDM assigns each signal a specific time slot. What enables broadband to send traffic both ways simultaneously? A. STDM B. Frequency Division Multiplexing (FDM) C. Half-duplex D. CDMA Rationale: FDM separates signals by assigning different frequencies for each direction. You can transmit data over electrical lines by using: A. Ethernet over Coax B. TDM C. Broadband over Power Lines D. Serial bus Rationale: BPL uses power lines to transmit data. Which group sets the standard for most Broadband over Power Lines tech? A. IEEE B. IETF C. HomePlug Powerline Alliance D. ISO Rationale: HomePlug defines specifications for BPL systems. Which duplex mode allows communication only one direction at a time? A. Full-duplex B. Half-duplex C. Simplex D. Quadplex Rationale: Half-duplex supports alternating send and receive.