Communication Systems Flashcards Preview

4th Year Electrical - Code > Communication Systems > Flashcards

Flashcards in Communication Systems Deck (16)
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1

Which term refers to signal loss

Attenuation

2

Which topology is hybrid and not basic?

Hierarchical star

3

Which cable subsystem connects equipment outlets to distributor A?

Cabling subsystem 1

4

What is the old term for distributor C?

Main cross connect

5

What standard does the network building infrastructure follow?

ANSI/TIA 568-C

6

What is the maximum distance allowed for UTP cable used for data?

90m

7

What jack is used for UTP data networks?

RJ-45

8

Three (3) layers around the core of a BI optical fibre

- cladding
- trench
- primary buffer

9

What are two basic types of optical fibres

- single mode
- multimode

10

Are tight buffered cables used indoors or outdoors?

Indoors

11

Two fibre optic splices

- fusion
- mechanical

12

Three types of adhesives used for adhesive/polish connectors

- epoxy
- hot melt
- anaerobic

13

Two main testers for UTP network cables

- wiremappers
- cable certifiers and verifiers

14

Five (5) problems wiremap testers identify

- opens
- shorts
- crossed pairs
- reversed pairs
- split pairs

15

List seven (7) tools for testing optical fibre cables

- visual tracer
- visual fault located
- inspection microscope
- power meter
- loss test
- optical to electric converters
- optical time domain refractory meter

16

When optical power meter reads -3 dBm, how many watts?

0.5 mW