Создать тест
ВходStructured cabling system
Список вопросов теста
Вопрос 1
A ____________ is a complete system of cabling and associated hardware, which provides a comprehensive telecommunications infrastructure.
Варианты ответов
- structured cabling system
- two conductors
- receiver
Вопрос 2
Twisted Pair Cable:
Варианты ответов
- Its frequency range is 0 to 3.5 kHz
- Eliminates crosstalk
- Typical attenuation is 0.2 dB/Km @ 1 kHz
- unwanted signals
- Repeater spacing is 2km
Вопрос 3
A _____________ consists of two conductors (normally copper), each with its own plastic insulation, twisted together.
Варианты ответов
- interference (noise)
- twisted pair
- receiver
Вопрос 4
Twisted Pair is of two types:
Варианты ответов
- Unshielded Twisted Pair (UTP)
- Plastic insulator
- Shielded Twisted Pair (UTP)
- LAN
Вопрос 5
_____________ is the reason behind coloured plastic insulation
Варианты ответов
- Twisted Pair
- Identification
- Shielded Twisted Pair
Вопрос 6
UTP__________ consist of 2 or 4 pairs of twisted cable. Cable with 2 pair use RJ11 connector and 4 pair cable use RJ45 connector.
Варианты ответов
- conductors
- cables
- receiver
Вопрос 7
Advantages of Unshielded Twisted Pair Cable:
Варианты ответов
- Installation is easy
- cable used in computer networking whichconsists of two conductors usually copper (1mm thick), each with its own colour plastic insulator.
- Cheap
- Higher grades of UTP are used in LAN technologies like Ethernet.
- The wires are twisted together in a helical form to reduce electrical interference from similar pair.
Вопрос 8
Disadvantages of Unshielded Twisted Pair Cable:
Варианты ответов
- Bandwidth is low when compared with Coaxial Cable
- Provides less protection from interference.
- Electromagnetic noise penetration is prevented by a metal casing.
- Installation is easy
Вопрос 9
Shielded Twisted Pair Cable has a metal foil or braided-mesh covering
which encases each pair of insulated _________.
Варианты ответов
- проводники
- кабель
- витая пара
Вопрос 10
_____________used in computer networking whichconsists of two conductors usually copper (1mm thick), each with its own colour plastic insulator.
Варианты ответов
- Неэкранированная витая пара
- Экранированная витая пара
- Частотный диапазон
Вопрос 11
___________ is used in telephone lines to provide voice and data channels.
Варианты ответов
- Кабель с экранированной витой парой
- Кабель с неэкранированной витой парой
- Кабель витой пары
Вопрос 12
attenuation-?
Варианты ответов
- затухание сигнала в кабеле
- проводник
- задержка
Вопрос 13
delay-?
Варианты ответов
- затухание сигнала в кабеле
- проводник
- задержка
Вопрос 14
DSL-?
Варианты ответов
- цифровая абонентская линия связи
- экранированная витая пара
- неэкранированная витая пара
Вопрос 15
The__________ that are used by the telephone companies to provide high-datarate connections also use the high-bandwidth capability of unshielded twisted pair cables and in LAN, such as 10Base-T and 100Base-T, also use twisted pair cables.
Варианты ответов
- UTP
- STP
- DSL lines
Получите комплекты видеоуроков + онлайн версии
0
318
Нравится
0
