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質問 # 28
What do category ratings of UTP cable (e.g. Cat 3, Cat 5e, Cat 6 and Cat 6A) mean?
- A. Flame retardance of the cable
- B. How well the cables are made
- C. How far the cable will work in networks
- D. The performance level of UTP cable
正解：D
質問 # 29
What do Category 3, Category 5e and Category 6 designations mean?
- A. Flame retardance of the cable
- B. How well the cables are made
- C. How far the cable will work in networks
- D. The performance level of UTP cable
正解：D
質問 # 30
What is the cable from the telecom closet (room) to the work area called?
- A. Work area cable
- B. Backbone cabling
- C. Patchcord
- D. Horizontal cabling
正解：D
質問 # 31
The international standard for structured cabling is \_\_\_\_\_\_\_\_?
- A. IEC-0001
- B. ISO-9000
- C. TIA-568
- D. ISO-11801
正解：D
質問 # 32
Structured cabling standards allow for a maximum length of permanently installed (not including patchcords) UTP cable for data of \_\_\_\_\_\_\_\_\_\_.
- A. 90 meters
- B. 100 meters
- C. 300 meters
- D. 800 meters
正解：A
質問 # 33
Which connector was chosen as the standard for the most recent EIA/TIA 568 cabling standard?
- A. SC
- B. Any connector with a FOCIS document
- C. ST
- D. LC
正解：B
質問 # 34
An older fiber design with a 50/125 micron core is now being used in cabling systems because it___________.
- A. Excess supplies are currently available from the far east
- B. Costs half as much as other multimode fibers
- C. Can be cabled in more compact cable designs
- D. Has a higher bandwidth with laser sources which gives more distance capability with gigabit (and above) networks
正解：D
質問 # 35
Which punchdown block is more often used with POTS telephone connections?
- A. Krone block
- B. Bix block
- C. 66 block
- D. 110 block
正解：C
質問 # 36
What do UTP Category 3, Category 5e and Category 6 designations indicate?
- A. The frequency performance grade of the cable
- B. How far the cable will work in networks
- C. They are trade names for cable types
- D. UL-rated Flame retardance of the cable
正解：A
質問 # 37
Below is the color code for _________________.
(Colors from left: 1-8: Blue stripe, Blue, Orange Stripe, Orange, Green Stripe, Green, Brown Stripe, Brown)
- A. TIA 568A Jack
- B. TIA 568B Jack
- C. Punchdown blocks
正解：C
質問 # 38
A client hired an ICT distribution designer who is designing some additional capacity for a customer owned aerial outside plant. Which of the following would be a PRIMARY consideration?
- A. That all of the poles on the path are at least Class 3.
- B. Sufficient space exists to install additional guying if required.
- C. Utility coordination with public utilities verifies minimum inductive interference.
- D. Clearances will still be adequate with the added equipment.
正解：D
質問 # 39
What wavelengths are appropriate for use with singlemode fiber?
- A. 1310 & 1550 nm
- B. 850 & 1490 nm
- C. 650 & 850 nm
- D. 850 & 1300 nm
正解：C
質問 # 40
Even \_\_\_\_\_\_ require cabling connections in a network.
- A. Laptop computers
- B. Wireless access points
- C. Blackberries
- D. Mobile phones
正解：B
質問 # 41
Most \_\_\_\_\_\_\_\_\_ are designed to allow easy pulling.
- A. Cable boxes
- B. Ropes
- C. Cables
- D. Cable trays
正解：A
質問 # 42
The total loss of the fiber in the cable plant is calculated by multiplying the attenuation coefficient of the fiber by the \_\_\_\_\_\_\_\_\_.
- A. Number of splices
- B. Number of connectors
- C. Number of links
- D. Length
正解：D
質問 # 43
What cable types are included in the TIA-568 structured cabling standards?
- A. UTP (unshielded twisted pair), ScTP (screened twisted pair) and STP (shielded twisted pair)
- B. UTP (unshielded twisted pair), STP (shielded twisted pair) and coax
- C. UTP (unshielded twisted pair) and coax
- D. UTP (unshielded twisted pair), ScTP (screened twisted pair), STP (shielded twisted pair) and fiber optics
正解：D
質問 # 44
Gigabit Ethernet uses all four pairs of a UTP cable \_\_\_\_\_\_\_\_\_.
- A. Bidirectionally
- B. For power
- C. Simultaneously and bidirectionally
- D. With 2 pairs in each direction
正解：C
質問 # 45
The loss of a fiber optic connector is defined as _____?
- A. The loss of a statistical sample of connectors
- B. The loss of the connector mated to another connector
- C. One-half the loss of a mated pair of connectors
- D. The calculated loss due to geometric misalignment
正解：B
質問 # 46
Which of the following fiber specifications is most important to the user and is an important factor in testing?
- A. Numerical aperture
- B. Bandwidth
- C. Core-cladding concentricity
- D. Attenuation
正解：D
質問 # 47
In premises applications, OTDRs are limited in usefulness by their \_\_\_\_\_\_.
- A. Distance Resolution
- B. Software
- C. Distance capability
- D. Output power
正解：A
質問 # 48
Why is the structured cabling standard not like "code"?
- A. It's voluntary, not required by law
- B. It changes every year
- C. It doesn't deal with flammability
- D. It is not written by the NFPA
正解：A
質問 # 49
10 dB corresponds to a factor of \_\_\_\_\_\_\_\_\_\_ in power.
- A. 0
- B. 1
- C. 2
- D. 3
正解：B
質問 # 50
Ethernet changed from a \_\_\_\_\_ to \_\_\_\_\_\_\_\_ network architecture when it switched to UTP cable.
- A. Bus, star
- B. Bus, ring
- C. Ring, UTP
- D. Ring, coax
正解：A
質問 # 51
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