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Teaching Since:	May 2017
Last Sign in:	318 Weeks Ago
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MCS,MBA(IT), Pursuing PHD
Devry University
Sep-2004 - Aug-2010

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Assistant Financial Analyst
NatSteel Holdings Pte Ltd
Aug-2007 - Jul-2017

Category > Programming Posted 27 Dec 2017 My Price 10.00

Line signaling

1. (TCO 1) Line signaling converts a digital word into a(n) _____. (Points : 5)

       serial byte stream
       analog word
       bit word
       serial bit stream

Question 2.2. (TCO 1) One hundred Mbps Ethernet uses _____ block encoding. (Points : 5)

       4B/5B
       differential
       Manchester
       PAM-5

Question 3.3. (TCO 1) In NRZ, line encoding is a binary code where 1s are represented by _____ . (Points : 5)

       the absence of a signal
       the presence or level of a signal
       a circular, sinusoidal signal
       line block coding

Question 4.4. (TCO 1) In 10BASE-T systems, the distance limit of 100 meters for a horizontal cable is due to _____. (Points : 5)

       code bits
       byte conversion
       a single character required at the end
       attentuation

Question 5.5. (TCO 2) For a cabling system to be certified as meeting Categoryu 5E, which of its components must be 5E rated? (Points : 5)

       Just the patch cables
       Just the cable tester
       All of the components
       Just the wiring in the work area

Question 6.6. (TCO 2) Plenum-rated cable has a code of _____ on it. (Points : 5)

       CM
       CMP
       CMR
       PLEN

Question 7.7. (TCO 2) This term has been appropriated by the cabling industry for a six-pin and eight-pin modular plug/jack. (Points : 5)

       SC and ST connector
       MT-RJ and Duplex RC connectors
       568A and 568B
       RJ-11 and RJ-45

Question 8.8. (TCO 2) The preferred fiber-optic cable testing method is the _____ method. (Points : 5)

       LC
       connector
       one jumper
       category

Question 9.9. (TCO 3) The National Electric Code (NEC) deals with _____. (Points : 5)

       service entrance
       the proper installation of electrical wire and related equipment
       conversion of RJ-11 to RJ-45
       All of the above

Question 10.10. (TCO 3) A star topology is a set of _____. (Points : 5)

       fiber-to-copper converters
       bright makers on the cabling
       point-to-point links from a central hub
       a physical bus

Question 11.11. (TCO 3) The basic link is limited to _____. (Points : 5)

       90 meters
       90 feet
       100 meters
       100 feet

Question 12.12. (TCO 3) Category 6A cabling was designed to deal with what potential problem?. (Points : 5)

       Low voltage
       Laser signals
       Alien landings
       Alien crosstalk

Question 13.13. (TCO 4) The outside plant is defined as _____. (Points : 5)

       the utility line
       the infrastructure exterior to the building
       the main backup connection
       the right of way

Question 14.14. (TCO 4) The outside plant is typically routed into the building through the _____. (Points : 5)

       work area
       right of way
       entrance facility
       tube

Question 15.15. (TCO 4) This is very bad for connections carrying radio frequency signals. (Points : 5)

       Pigeons
       Low-flying aircraft
       Moisture
       Duct tape

Question 16.16. (TCO 4) In general, a lightning protection system should _____. (Points : 5)

       dissipate the lightning energy into the ground field
       capture the energy from the lightning strike to a known point designed to handle that much energy
       ensure all ground points are bonded to one another
       All of the above

Question 17.17. (TCO 5) The CD in CSMA/CD stands for what? (Points : 5)

       Combined sense
       Contention sense
       Carrier symbolism
       Collision detection

Question 18.18. (TCO 5) The address field in a HDLC frame serves what purpose? (Points : 5)

       No real purpose
       To keep the frame aligned
       To report failed checksums
       To identify the next protocol

Question 19.19. (TCO 5) The function of the Frame Check Sequence field in an Ethernet II frame is to _____. (Points : 5)

       readjust the network timing
       check for errors in encapsulation
       check for errors in transmission
       allow the sender to set up bit synchronization

Question 20.20. (TCO 5) An Ethernet II frame always has this to delinate the start of the frame _____. (Points : 5)

       transporter
       period
       header
       preamble

Question 21.21. (TCO 6) What are the common FCS methods? (Points : 5)

       Retransmission and recycling
       Checksum and CRC
       PPP and HDLC
       Ethernet and token ring

Question 22.22. (TCO 6) A bad NIC will cause frames to be _____. (Points : 5)

       substituted
       lost
       ACKed
       SYNed

Question 23.23. (TCO 6) When the data is extracted from the data section of the frame at L2 of the OSI modelm, it is handed up to what layer? (Points : 5)

       Physical
       Data link
       Network
       Transport

Question 24.24. (TCO6) Nonstandard-sized frames are _____. (Points : 5)

       lost
       discovered by comparing checksums
       adjusted in size and read in
       thrown out

Question 25.25. (TCO 7) When troubleshooting at Layer 1, the first step is to _____. (Points : 5)

       reterminate the cable ends
       visually inspect to check the cabling
       isolating timing errors
       realign the timing

Question 26.26. (TCO 7) A gigabit Ethernet systym can send _____. (Points : 5)

       data at irregular intervals
       1,488,000 frames per second
       1,500 bytes per second
       sent in triple duplex mode

Question 27.27. (TCO 7) Bandwidth is what? (Points : 5)

       Reliability
       A measure of the capacity of a link
       Not imprortant
       The amount of useable date sent through a link

Question 28.28. (TCO 7) Ping is used to _____. (Points : 5)

       adjust timing
       locate gaps in the network
       test network connectivity
       sound a signal when an error occurs

Question 29.29. (TCO 1) The 100BASE-TX Fast Ethernet uses MLT-3 as the line signaling method. Explain how MLT-3 works. (Points : 40)

Question 30.30. (TCO 2) There are several categories of UTP cabling that can be used to connect the work area to the telecommunications room. List the categories of cable that are likely to be found in current buildings, as well as those that might still be in place but are unsuitable for current use. Then explain which you would use, why you would use these, and what makes them superior to the other categories that have been or still are available to you. (Points : 40)

Question 31.31. (TCO 3) Explain what role BICSI has in ensuring the structured cabling standards are adhered to. (Points : 40)

Question 32.32. (TCO 4) Explain what the outside plant is, what practices should be adhered to when installing cabling in the outside plant, and the types of media used in the outside plant. (Points : 40)

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Status NEW Posted 27 Dec 2017 03:12 PM My Price 10.00

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