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Flashcards in €h 18 - Wireless Deck (36)
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1
Q

18–2 services and applications

Technological considerations of wireless =

A

Scalability

2
Q

18–2 services and applications

Reliability of wireless =

A

Consistency of service

3
Q

18–3 services and applications

Environmental considerations =

A

Materials, objects, local geography, atmosphere

4
Q

18–4 wireless standards and technologies

PAN =

LAN =

MAN =

GAN =

A

* 33 ft

* small geographic area, within an office building

* 50mi

* satellite

5
Q

18–5 wireless standards and technologies

802.15.4 =

A

ZigBee’s

6
Q

18–6 wireless standard technologies

WiMax

A

30 miles per hour

7
Q

18–7 emerging wireless technologies and related standards

MBWA=

(2)

A

* Mobile broadband wireless access

* IEEE 802.20*100mi

8
Q

18–12 electromagnetic spectrum

Spectrum groups =

(2)

A

*Ultra high frequency (UHF)

*300 MHz to 3000 MHz

9
Q

18–13 spectrum groups

Band 6 =

Band 8 =

Band 9 =

A

*Medium

*very high

*ultrahigh

10
Q

18–17 modulation demodulation techniques used in wireless systems

Modulation technique =

A

Except, CDMA does not belong

11
Q

18–20 pre-design and survey analysis

Heavy moisture =

A

Causes disruptions in RF

12
Q

18–21 licensed wireless networks

6 GHz and 11 GHz =

A

Public Safety applications (share office, law office)

13
Q

18–23 design considerations

Radomes =

A

Covers antennas

14
Q

18–26

Antenna types =

A

Except, trapezoidal, does not belong

15
Q

18–28 waveguide feeders

High-frequency coaxial =

A

Very highly losses

16
Q

18–28 waveguide feeders

Waveguide joined =

A

Airtight flange fittings

17
Q

18–28 waveguide feeders

Elliptical waveguide =

A

Long runs

18
Q

18–29 pressurization equipment

Towers (wireless) =

A

5mi airport Antenna supporting structure > 200ft high

19
Q

18–30 pigtails and jumpers

Antenna =

(2)

A

* 7/8 type N connector

* Connector weakest point

20
Q

18–30 power supplies and voltage objectives

Two major types voltage injectors =

A

Coaxial & unused pair

21
Q

18–31 cable management

Feed line support =

A

1-1/2 inch above the roof

22
Q

18–33 DAS

DAS transmits =

A

Within buildings

23
Q

18–33 DAS

DAS root =

A

Radio transceiver

24
Q

18–34 DAS

DAS size =

A

Single antenna or multi-antenna

25
Q

18–35 cable plant

Five types of DAS cable =

A

Except wireless or password hybrid

26
Q

18–35 cable plant

Shielded twisted pairs =

A

Carries power for the units

27
Q

18–36 components

Antenna =

A

Must be tuned to the same frequency band

28
Q

18–36 components

Radiating cable technology allows =

A

Coaxial cable

29
Q

18–40 components

Retransmitted DAS services =

A

Except, family radio service (FRS) does not belong

30
Q

18–43 components

Passive =

A

Does not require external power input

31
Q

18–43 topologies

Cabling topologies DAS within =

(2)

A

* Star

* Tapped-trunk

32
Q

18–44 star topology

Start topology cabling for DAS =

(3)

A

* Balanced twisted-pair

* coaxial

* optical fiber cables

33
Q

18–46 DAS

First-generation (1G) =

A

Analog cellular

34
Q

18–47 multiplexing technique

Forms of multiplexing =

A

Except GDMA does not belong “grandma”

35
Q

18–59 basic service set (BS)

AP =

A

“Stand alone” or cable

36
Q

18–67

routers =

A

Home-office