Which of these components is used in a passive optical network (PON)? - correct answerOptical splitters.
Which should be used to cut the fiberdrop's
... [Show More] buffer tube? - correct answerA tube cutter
What is one reason why broadband cable operators install fiber-optic cable in stages instead of changing the infrastructure all at once? - correct answerChanging the infrastructure all at once would cause too many service disruptions.
When a pre-connectorized fiber is not attached to equipment, what should be attached to help keep it clean? - correct answerA dust cap
Simplify and solve the equation: If E = IR then I = ? - correct answerE/R
(480 x 10 to the power of -5) divided by (60 x 10 to the power of -3) = - correct answer8 x 10 to the power of -2
7 3/8 divided by 7 1/4 = - correct answer1 1/58
(20) / (-4) + (-2) x (-10) - (-2) x (7) = - correct answer29
What should you avoid to prevent stress? - correct answerExcessive caffeine
It is essential to pay attention to warning signs of stress overload. Poor attitude is one of the behaviors that may indicate that you are overstressed. What are the symptoms of poor attitude behavior? - correct answerA significant change in attitude with a noticeable movement toward negative, hostile, cynical, or paranoid thoughts
During which step of the six-step troubleshooting process for a digital TV (DTV) service problem are quadrature amplitude modulation (QAM) channel measurements typically taken? - correct answerDiagnosing symptoms.
When troubleshooting a digital TV (DTV) authorization issue, what can be verified using the set-top box (STB) diagnostic page? - correct answerSTB reception of authorization message data.
Which of the following is a multicast control protocol between the cable modem and the CMTS that works in harmony with the downstream channel bonding for efficient and extensible support for multicast applications? - correct answerSource-specific multicast (SSM)
Which step in the troubleshooting process requires a discussion with the customer to gather more detail about the problem? - correct answerStep 1: Identify the problem.
Which of the following wire color combinations make up quad station wire? - correct answerGreen, red, black, yellow
A customer reports a problem of no dial tone (NDT). Upon inspection, the technician notices that new carpeting has been installed. What should the technician do next? - correct answerLook for a cable that runs under the carpet; it is likely that the cable has a short from the carpeting tack strip.
What uses the 2.4-GHz band and runs at 54 Mbps? - correct answer802.11g
What is the last step of the basic wireless access point (WAP) setup? - correct answerApply security.
Why are wireless local area networks (WLAN) usually deployed in an access capacity instead of as the network's core layer? - correct answerWLANs are generally incapable of meeting the requirements of the network core layer, which needs to be very fast and stable, able to handle a tremendous amount of traffic with little difficulty, and must experience no down time.
Wireless internet service providers (ISP) provide which of one of the following services? - correct answerLast mile data delivery
What is a symptom of a high voltage standing wave radio (VSWR) in a radio transmitter? - correct answerhigh voltage standing wave radio
How does an antenna create gain in the received signal? - correct answerThe antenna's shape focuses the received signal into a tighter beam
A transmitter outputs 100 milliwatts (mW). An antenna cable connects the transmitter to an amplifier, and the power into the amplifier's input measures 50 mW. The amplifier increases the signal to the original transmitter's power level and sends the signal to the antenna. The antenna receives the signal from the amplifier at 75 mW, and then transmits at 150 mW. What is the intentional radiator's (IR) power level in this radio frequency (RF) circuit? - correct answer75 mW
Which of the following is an advantage of 802.11b direct sequence spread spectrum (DSSS) over 802.11 frequency hopping spread spectrum (FHSS)? - correct answer**Data throughput
What is the width of direct sequence spread spectrum (DSSS) channels and how far apart are their center frequencies spaced? - correct answer22 megahertz (MHz) and 5 MHz.
What statement best describes frequency-hopping spread spectrum's (FHSS) use of frequency agility? - correct answerIt refers to a radio's ability to change transmission frequency abruptly within the usable RF frequency band.
When a wireless bridge is configured in repeater mode, the range of the wireless segment can be extended at the expense of which of the following? - correct answerThroughput
What value does the profile configuration utility in a wireless client device provide the user? - correct answerThe user can configure profiles for each wireless network during the initial configuration of the client device instead of manually reconfiguring all of a wireless client's settings each time the user changes networks
What is a half-duplex device that is only capable of Open Systems Interconnection (OSI) reference model Layer 2 connectivity? - correct answerA wireless bridge.
As a general rule, how does an increase in effective isotropic radiated power (EIRP) relate to the link budget range? - correct answerEach 6 decibels (dB) increase in EIRP equates to a doubling of range.
What specification requirements should you consider when selecting an amplifier for a wireless local area network (LAN)? - correct answer
Which term describes the RF loss incurred when an item or component is introduced into an RF circuit? - correct answerInsertion loss
Which of the Institute of Electronics Engineers (IEEE) wireless LAN standards listed below is the only one that includes infrared technology? - correct answer802.11
Operation as an IEEE 802.11ac device occurs only in the 5 gigahertz (GHz) Unlicensed National Information Infrastructure (U-NII) radio band, so how are 802.11ac devices able to maintain compatibility with earlier standards that operate in the 2.4 GHz Industrial, Scientific, and Medical (ISM) radio bands? - correct answerIEEE 802.11ac devices also operate in the 2.4 GHz ISM range.
What are some Federal Communications Commission (FCC) regulations within which wireless local area networks (LAN) and devices must operate - correct answer
What three levels of security does virtual private network (VPN) technology provide in a wireless local area network (LAN)? - correct answerUser authentication, data encryption, and data authentication [Show Less]