問題1
A reasonable approximation for the signal speed in 100 ohm balanced twisted pair cable is __________,
where c is the velocity of light in free space.
A reasonable approximation for the signal speed in 100 ohm balanced twisted pair cable is __________,
where c is the velocity of light in free space.
正確答案: A
問題2
A common mode (CM) signal can be converted to a differential mode (DM) signal as a result of a(n):
A common mode (CM) signal can be converted to a differential mode (DM) signal as a result of a(n):
正確答案: B
問題3
What is the frequency rating of an International Organization for Standardization/International
Electrotechnical Commission (ISO/IEC) Category 7/Class F cable?
What is the frequency rating of an International Organization for Standardization/International
Electrotechnical Commission (ISO/IEC) Category 7/Class F cable?
正確答案: D
問題4
When installing a heavy backbone cabling vertically, recommended methods of securing the cable
include all of the following EXCEPT:
When installing a heavy backbone cabling vertically, recommended methods of securing the cable
include all of the following EXCEPT:
正確答案: D
問題5
You are extending 1000 MHz video service from your existing headend to a new equipment room (ER).
Your existing incoming video signal is plus (+) 15 dBmV. You have three two-way splitters with a total of
minus (-) 15 dB. You are adding 122 m (400 ft) of series 11 (RG 11) cable with a minus (-) 18 dB with
eight single end F-connectors with a total of minus (-) 1.2 dB. From the selections below, what is the
MINIMUM gain amplifier required in the headend room?
You are extending 1000 MHz video service from your existing headend to a new equipment room (ER).
Your existing incoming video signal is plus (+) 15 dBmV. You have three two-way splitters with a total of
minus (-) 15 dB. You are adding 122 m (400 ft) of series 11 (RG 11) cable with a minus (-) 18 dB with
eight single end F-connectors with a total of minus (-) 1.2 dB. From the selections below, what is the
MINIMUM gain amplifier required in the headend room?
正確答案: C
問題6
As a guide, the recommended maximum AC current value on any bonding conductor should be less than
________ amperes.
As a guide, the recommended maximum AC current value on any bonding conductor should be less than
________ amperes.
正確答案: D
問題7
What type of estimate is based on the cost of performing similar work in the past, adjusted for current job
conditions?
What type of estimate is based on the cost of performing similar work in the past, adjusted for current job
conditions?
正確答案: C
問題8
When installing underground entrances, no more than ________ 90-degree bends should be included
between pulling points.
When installing underground entrances, no more than ________ 90-degree bends should be included
between pulling points.
正確答案: D
問題9
Color codes for cross-connections fields have been used for many years. Which color is used to identify
campus backbone?
Color codes for cross-connections fields have been used for many years. Which color is used to identify
campus backbone?
正確答案: C
問題10
A telecommunications outlet/connector may be provided using all listed below EXCEPT:
A telecommunications outlet/connector may be provided using all listed below EXCEPT:
正確答案: B
問題11
The RJ-45 is now known as the 8P8C style connector, per the Telecommunications Industry Association
(TIA) standard. What does the P and C stand for?
The RJ-45 is now known as the 8P8C style connector, per the Telecommunications Industry Association
(TIA) standard. What does the P and C stand for?
正確答案: C
問題12
You are designing a firestop system for a boiler room that will have conduits coming from the service
provider maintenance hole into the building. Which test rating will address the firestops ability to resist
breakdown from water damage?
You are designing a firestop system for a boiler room that will have conduits coming from the service
provider maintenance hole into the building. Which test rating will address the firestops ability to resist
breakdown from water damage?
正確答案: D
問題13
Exhibit:
If a work breakdown structure (WBS) shows the tasks below, what is C, the successor task?
A) Install OSP pathways B) Install fiber C) ________.
Exhibit:
If a work breakdown structure (WBS) shows the tasks below, what is C, the successor task?
A) Install OSP pathways B) Install fiber C) ________.
正確答案: D
問題14
A telephone facility and an electrical facility are required in a tunnel. To reduce the effects of EMI and
eliminate the need for additional shielding of the cables, where would each facility be placed?
A telephone facility and an electrical facility are required in a tunnel. To reduce the effects of EMI and
eliminate the need for additional shielding of the cables, where would each facility be placed?
正確答案: C