Which of the following correctly describes the type of signal that the network media carries?

Which of the following correctly describes the type of signal that the network media carries? • Coaxial cable carries pulses of light • UTP cable carries impedance signals • STP cable carries electrical impulses • Fiber-optic cable carries electrical impulses

Select the characteristics specified by 10BaseT. (Choose three.) • twisted pair cable • T style connectors • baseband transmission • 10 gigabits per second data rate • 10 megabits per second data rate • decimal encoded data transmission

Which of the following describe the purpose of the conductive braid around the insulator of a coaxial cable? (Choose three.) • power supply conductor • shield for noise reduction • signal ground connection • data signal carrying conductor • filter to prevent signal reflections • secondary filter channel connector

Which of the following is an external source of degradation of the signal on cabling? • EMI caused by electrical motors • RFI caused by light leakage • Impedance caused by radio systems • RFI caused by lighting

Which effects comprise impedance? (Choose three.) • capacitance • voltage • current • resistance • inductance • power

How does crosstalk occur? • Cable wires that are too large in diameter • Too much noise in a cable’s data signal • Electrical motors and lighting • Electrical signals from other wires in a cable

Which of the following characteristics describe STP cable? (Choose three.) • costs more than UTP • easier to install than UTP • uses the shield to carry data signals • twisted pairs are not required because of the shield • must be grounded at both ends for high frequency signals • reduces both internal and external sources of interference

What type of UTP cable does the TIA/EIA-568B standard require for horizontal cabling? • Tow pairs of 100-ohm cable • Two pairs of 150-ohm cable • Four pairs of 100-ohm cable • Four pairs of 150-ohm cable

Which of the following describe the light used for fiber optic transmission? (Choose two.) • It is within the spectrum of visible light. • It is outside the spectrum of visible light. • The wavelengths are longer than red light. • It is within the spectrum of ultraviolet light. • The wavelengths are longer than visible light

What is Category 5 UTP cabling suitable for? • Transmitting data at speeds up to 10 Mbps • Transmitting data at speeds up to 100 Mbps • 10BASE-T networks • Token Ring networks

Which of the following describe the ray model of light? (Choose three.) • Light bends at the boundary of two transparent materials. • The speed of light is greatest when passing through optical glass. • The speed of light is constant no matter what material passes through. • The optical density of the material determines how much the light will bend. • The index of refraction is the ratio of the speed of light in a material compared to a vacuum.

Which grade of UTP cabling described in the TIA/EIA-568B standard is the one most frequently recommended and implemented in installations today? • Category 2 • Category 3 • Category 4 • Category 5

Which of the following are attributes of singlemode fiber optic cable? (Choose two.) • one path of light • larger fiber optic core • uses LEDs as a light source • distances up to 5000 meters • higher bandwidth than multimode

What is the point that a device uses to measure and compare incoming digital signals called? • Input point • Zero point • Null reference setting • Signal reference ground

Which of the following are characteristics of fiber optic light receivers? (Choose two.) • react to multiple wavelengths • react to a specific wavelength • tuned to one wavelength for noise reduction • use PIN photodiodes to convert light pulses to electrical signals

How is the signal reference ground established? • By connecting the ground wire to the network wire • By connecting the network wire to jumper connector • By connecting the ground plane to the computer’s cabinet • By connecting the computer chassis to the network cable

Which tasks must be performed when installing fiber optic cable? (Choose three.) • install connectors • inspect laser signal using a microscope • cleave and polish cable ends • wash cable ends with mild soap and water • protect connector ends from dirt and damage • pull cables tight to reduce the number of bends and twists

Which devices could cause problems with a wireless transmission? (Choose two.) • radio • TV • microwave • wireless phone • DVD remote control

Which of the following best describes a collision? • The frames from two devices impact and are damaged when they meet on the physical media • Two nodes transmit at the same time and one data packet has priority, so it obliterates the lesser packet • Two data transmissions cross paths on the network media and corrupt each other • A data transmission is corrupted due to an energy spike over the network media

Which of the following are typical specifications for data transmission cables? (Choose three.) • achievable bit transmission speeds • supported data encoding schemes • minimum distance between hosts • maximum distance before fatal attenuation • intended transmission type • intended bit level protocols type

Your company has a new wireless network setup in their building. The boss has heard the throughput for a wireless network would be 11 Mbps. You mention that because of the way WLANs transmit and acknowledge data the actual percentage of throughput would be which of the following? • 25% • 40% • 50% • 70%

Which term refers to the amount of signal power loss that can be tolerated on a fiber optic link? • linear laser light loss • optical link loss budget • acceptable decibel power reduction • maximum allowable light attenuation

Which of the following correctly describes the type of signal that the network media carries?