Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
80 Cards in this Set
- Front
- Back
What is the CENELEC standard for Information Technology - Cable Installation?
|
CENELEC EN 50174
|
|
What is the CENELEC standard for Information Technology - Generic Cabling Systems
|
CENELEC EN 50173
|
|
What is the CENELEC standard for Application of Equipotential Bonding and Earthing in Buildings with Information Technology Equipment
|
CENELEC EN 50130
|
|
What is the CENELEC standard for Information Technology - Cabling Installation - Testing of Installed Cabling
|
CENELEC EN 50346
|
|
What is the optimm temperature that a battery should be maintained
|
77 degrees F
|
|
The recommended Bend Radius for a cable during installation is typically greater than the recommended bend radius after the cable is installed. True or False?
|
True
|
|
The mazimum pulling force guideling for a 2-or 4- strand fiber cable is what?
|
50 lbs
|
|
The minimum bend radius for a 2- or 4-fiber optical cable is what under no-load conditions
|
1 inch
|
|
The minimum bend radius for a 2- or 4-fiber optical cable is what under pulling tension
|
2 inch
|
|
What are the Standard Test Methods for Fire Test of Through-Penetration Fire Stops?
|
UL 1479 and ASTM E814
|
|
What is the permitted substitute for a fiber optic cable rated OFNP
|
None
|
|
What does OFNP stand for
|
Optical Fiber Non-Conductive Plenum
|
|
The magnitude of disturbances in Telecommunications Facilities depend upon what three things
|
1) Influence characteristics of the disturbing system
2) Inductive Coupling characteristics of the disturbing systems 3) Interference suseptability of the telecommunications facility |
|
The Interference characteristics of the disturbing system depends on what four things
|
1) The balance of the system
2) The fundemental and harmonic content 3) Current Magnitude (for magnetic coupling) 4) Voltage Magnitude (fpr electrostatic coupling) |
|
The coupling characteristics (coupling impedence) is a function of what 5 things?
|
1) Frequency
2) Seperation distance 3) Lenght of exposure 4) Earth Resistance 5) Shielding effect between the Telecommunication Facilities |
|
The three types of protection for electrical power stations are:
|
1) Isolating transformers
2) Neutralizing Transformers 3) Mutual Drainage Reactors |
|
What are the three types of tunnel construction methods
|
1) Open-cut (ground exavation
2) Boring (or tunneling 3) Prefabrication (used for underwater) |
|
The Majority of all FA systems are of the PLFA type.
True or False? |
True
|
|
PLFA stands for ???
|
Power Limited Fire Alarm
|
|
Most PLFA circuits operate at less than or equal to how many volts
|
24 volts
|
|
The portion of the Ethernet physical layer responsible for the interfacing to the transmission medium is called the ____________sublayer.
|
Physical Media Dependent (PMD)
|
|
What are the seven layers of the OSI Model
|
apstndp
1) Physical 2) Data Link 3) Network 4) Transport 5) Session 6)Presentation 7) Application |
|
What is an MCS?
|
Mobile Switching Center
|
|
What is a ECP?
|
Executive Cellular Processor sometimes referred to as a homel location register.
|
|
How many BTU's = 1 ton of airconditioning required
|
12,000
|
|
1 Watt = how many BTU's
|
3.413 BTU
|
|
What is the lozz of a 4-way splitter at 450MHz
|
6.8dB
|
|
What is the loss of a 2-way splitter at 450MHz
|
3.5dB
|
|
What is the typical impedence for private line circuits?
|
600 ohms
|
|
The maximum allowable attenuation for horizontal 62.5/125 or 50/125 micrometer multimode link is what?
|
2.0dB
|
|
802.11a operates at what maximum data rate
|
54 Mb/s
|
|
802.11b operates at what frequency
|
2.4 GHz
|
|
Power converter usually produce only common-mode (CM) noise. True or False
|
False
|
|
Power converters usually produce both common-mode (CM) and differential mode (DM) noise
|
True
|
|
The temperature in the ER should be maintained at what temperature?
|
64 and 75 degrees F
|
|
The relative humidity in the ER should be maintained at what level?
|
30 to 50%
|
|
What is the typical impedence preferred for the private line circuits?
|
600 ohms
|
|
Ethernet in the 1st Mile is also known as?
|
802.3ah
|
|
ITU G.655 non-zero shifted optical fiber represents the majority of the installed base of single mode optical fiber. True or False
|
False
|
|
ITU-T G.652 non-zero shifted optical fiber represents the majority of the installed base of single mode optical fiber. True or False
|
True
|
|
Which of the following coordinates the access, paging, and handoff function within a cellular system?
1) ESN 2)ESP (Executive Call Processing) 3)MCS (Mobile Switching Center 4) DCS |
3) MCS
|
|
Which is more efficient
1) Syncronous Transmission 2) Asyncronous Transmission |
1) Syncrynous Transmission - because no start stop bits are required (Digital baseband speeds as low as 2.4Kb/s)
|
|
Access floor in general office areas are designated at:
1) 2 inches 2) 5 inches 3) 4 inches 4) 6 inches 5) 8 inches |
5) 8 inches
|
|
Power converter produce only differential-mode (DM) noise:
True or False? |
False
|
|
Power converters produce both common mode (CM) and differential-mode noise:
True or False? |
True
|
|
Power converters produce only common-mode (CM) noise:
True or False? |
False
|
|
ACR stands for:
|
Attenuation to Crosstalk Ration
|
|
ACR is the calculated difference between attenuation and crosstalk measurement for twisted pair cabling:
True or False? |
True
|
|
Which of the following are not inductive coupling characteristics?
1) Current Magnetude (magnetude coupling) 2) None of these 3) Earth Reistivity 4) Shield effect between the telecommunication facility. 5) Voltage Coupling (Electostatic Coupling) |
1) Magnetic Coupling
5) Electrostatic Coupling |
|
In residential cabling systems the AP must be notified if the the total cable lenght from the DP to the farthest outlet exceeds:
1) 150 Meters 2) 200 Meteres 3) 100 Meters 4) 90 Meters |
1) 150 Meters
|
|
Which of the following Data Center tiers will allow for any planned site infrastructure activity without disruptin the computer hardware in any way:
1) Tier 1 2) Tier 2 3) Tier 3 4) Tier 4 |
3) Tier 3
4) Tier 4 |
|
Which of the following makes it possible to segment an organizations network into multiple broadcast domains:
1) Router 2) Hub 3) Switch 4) All |
1) Router
|
|
To reduce EMI in Tunnes, which of the following is the recommended overall telephone circuit balance for metropitan area circuits:
1) 30 dB or > 2) 40 dB or > 3) 60 dB or > 4) 50 dB or > |
3) 60db or >
|
|
Which of the following fiber types is desirable because of their invrease physical flexibility:
1) Loose buffered 2) Tight buffered 3) 62.5/125 4) 50/125 |
2) Tight buffered
|
|
What is the most common distance between loading points for D Loading
1) 450 feet 2) 4500 feet 3) 6000 feet 4) 600 feet |
2) 4500 feet
|
|
LVD means ?
|
Low Voltage Disconnect
|
|
FA Central Services has six elements to meet the certification level required by:
1) NFPA 72 2) JIS X5150 3) UL 1034 4) CENELEC EN 50174 |
1) NFPA 72
|
|
Which of the following cause a difference between real power (in watts) and the apparent power (in volt amperes) required by the load in an AC circuit:
1) Inductance 2) Capacitance 3) Resistance 4) All of the above |
1) Inductance
2) Capacitance |
|
NEC Artical covering CATV and Radio Distribution Systems
1) Article 510 2) TIA/EIA 569 3) Article 820 4) Article 770 |
3) Article 820
|
|
Standard "Commercial Building Telecommunication Cabling Standard General Requirement"
|
ANSI/EIA-568-B.1
|
|
Administration Standard for Commercial Telecommunications Infrastructure
|
ANSI/EIA-606-1
|
|
Residential Telecommunication Cabling Standard
|
ANSI/EIA-570-A
|
|
Commercial Building Standards for Telecommunications Pathways and Spaces
|
ANSI/EIA-569-B
|
|
Commercial Building Telecommunications Standard, Part 2 Balanced Twisted Pair Cabling Components
|
ANSI/EIA-568-B.2
|
|
Optical Fiber Cabling Compents Standard
|
ANSI/EIA-568.B.3
|
|
Commercial Building Cabling Standard Par 1 General Requirements Addendum 1 - minimum 4-Pair UTP
|
ANSI/EIA-568.B.1-1
|
|
A symmetrical noise voltage that appears equally in each action signa carrying conductor is the definition of what?
|
Differential-mode voltage
|
|
Fire Test of Through Penetration Firestops
|
UL 1479
|
|
Standard Test Methods for Fire test of Thru-Penetration Fire Stops
|
ASTM E814
|
|
Which Standard applies to equipment racks used in TE in the US?
|
ANSI/EIA-310-D
|
|
The combined cable lenghts for patch cords and equipment connects in the work area (WA) and the telecommunications room (TR) should not exceed what length?
|
10 meters (33 feet)
|
|
What cable length is allowed between the HC(FD) and the telecommunication outlet (TO)
|
90 meters (295 feet)
|
|
What is the typical impedence preferred for central office switching system line circuits
|
900 ohms
|
|
Data Center Infrastructure Standard
|
TIA-942
|
|
What is the AC frequency of the sine waves cycle s in one second in North America
|
60 Hz
|
|
Primary AC frequency in other countries is what?
|
50 Hz
|
|
What are the characteristics of inductive coupling
|
1) Current Magnitude (magnetic coupling)
2) Voltage Magnitude (Electrostatic coupling) |
|
What are the video transmission protocols.
|
1) PAL (Phase Alternation Line)
2) NTSC (National Television System Communication) 3) Ethernet 4) RS-170 (Monochrome broadcas standard) |
|
The "Standard test method of building construction materials" is?
|
ASTM E119
|
|
HC (FD) jumpers and patch cords should not exceed a length of ?
|
5 meters (16 feet) per link
|