CompTIA A+ 220-1101 Practice Test 9+10 By Mr.B

Shielded Twisted-Pair (STP) cabling reduces what kind of interference?

• Jitter

• Signal attenuation

• Crosstalk

• EMI

• Signal latency

Answer explanation

Shielded Twisted-Pair (STP) cabling reduces crosstalk by minimizing interference between adjacent wires and also protects against electromagnetic interference (EMI) from external sources, ensuring clearer signal transmission.

Which of the following answers refer(s) to UTP cabling? (Select all that apply)

• Takes advantage of additional protective cover reducing signal interference from outside sources

• Low cost and ease of installation

• Used in Ethernet networks and telephone systems

• Twisted-pair copper cabling

• In Ethernet networks, installed with RJ45 connector type

Answer explanation

All options correctly describe UTP cabling: it reduces interference, is cost-effective, used in Ethernet and telephone systems, consists of twisted-pair copper, and connects via RJ45 in Ethernet networks.

A type of enclosed space in a building (such as the one between a dropped ceiling and the structural ceiling) used for air handling is commonly referred to as a plenum space. A special type of cabling with fire-retardant jacket placed inside that space is known as a plenum-rated cabling. Materials from which the plenum-rated cable's cover is made include low-smoke Polyvinyl Chloride (PVC) and Fluorinated Ethylene Polymer (FEP). True or False.

• True

• False

Answer explanation

The statement is True. Plenum-rated cabling is specifically designed for use in plenum spaces and is made from materials like low-smoke PVC and FEP to reduce fire hazards.

Which of the answers listed below refer to the characteristics of multimode fiber optics? (Select 3 answers)

• Transmission distances of up to 2 km

• Less expensive than single-mode fiber optics

• Uses LED as the source of light

• More expensive than single-mode fiber optics

• Uses laser as the source of light

Answer explanation

Multimode fiber optics can transmit distances up to 2 km, are generally less expensive than single-mode fibers, and use LEDs as their light source, making these the correct characteristics.

A common cabling type used for connecting workstations to network devices is referred to as: (Select 2 answers)

• Patch cable

• RG-59 cable

• Crossover cable

• RG-6 cable

• Straight-through cable

Answer explanation

Patch cables and crossover cables are commonly used to connect workstations to network devices. Patch cables connect devices to a network, while crossover cables connect similar devices directly.

What type of Ethernet cable would be used for establishing a direct communication link between two PCs?

• Patch cable

• Crossover cable

• Rollover cable

• Straight-through cable

Answer explanation

A crossover cable is specifically designed to connect two PCs directly, allowing them to communicate without a switch or hub. It connects the transmit pins of one PC to the receive pins of the other, making it the correct choice.

What is the maximum allowable cable length for USB 2.0?

• 3 meters

• 4.5 meters

• 5 meters

• 10 meters

Answer explanation

The maximum allowable cable length for USB 2.0 is 5 meters. This length ensures reliable data transmission without significant signal degradation, making 5 meters the correct choice.

Which of the following terms refers to USB 3.2 Gen 1?

• SuperSpeed USB

• SuperSpeed USB 10 Gbps

• SuperSpeed USB 15 Gbps

• SuperSpeed USB 20 Gbps

Answer explanation

USB 3.2 Gen 1 is also known as SuperSpeed USB, which supports data transfer rates of up to 5 Gbps. The other options refer to higher versions of USB with faster speeds.

USB 3.2 Gen 2 is also labeled as:

• SuperSpeed USB

• SuperSpeed USB 10 Gbps

• SuperSpeed USB 15 Gbps

• SuperSpeed USB 20 Gbps

Answer explanation

USB 3.2 Gen 2 is also known as SuperSpeed USB 10 Gbps, indicating its maximum data transfer rate of 10 Gbps. The other options refer to different USB standards or speeds.

Which of the answers listed below refers to USB 3.2 Gen 2x2?

• SuperSpeed USB 5 Gbps

• SuperSpeed USB 10 Gbps

• SuperSpeed USB 15 Gbps

• SuperSpeed USB 20 Gbps

Answer explanation

USB 3.2 Gen 2x2 supports data transfer speeds of up to 20 Gbps, which is referred to as SuperSpeed USB 20 Gbps. The other options represent different USB standards with lower speeds.