RCDD Chapter 17
Chapter 17 quiz for the RCDD
- 1.
Technological condiderations in the design of a wireless network include :
- A.
Scalability of the network, which should always be considered in the initial design.
- B.
Compatibility of the overall network, which ensures that the proposed system integrates with the current network
- C.
Standardization of a wireless network based arond standards, which is perferable to a proprietary system that ties the design to a single vendor or a nonstandard technology.
- D.
A and C
- E.
A, B and C
Correct Answer
E. A, B and C -
- 2.
The reliability of a wireless network is defined by a systems what three things?
- A.
Accessibility
- B.
Continuity
- C.
Consistency
- D.
Cost
- E.
Ease of implementation
Correct Answer(s)
A. Accessibility
B. Continuity
C. Consistency -
- 3.
Geography and atmosphere can affect wireless communications and you should consider these when designing a wireless system.
- A.
True
- B.
False
Correct Answer
A. True -
- 4.
A PAN is a network in which all interconnected computers are distributed locally, typically within a radius of ________?
- A.
15 m (50 ft)
- B.
10 m (30 ft)
- C.
5 m (16 ft)
- D.
20 m (65 ft)
Correct Answer
B. 10 m (30 ft) -
- 5.
A MAN is a high-speed data intra-city network, which links multiple location. It is a network of limited geographic scope, generally defined to be within an _______ radius?
- A.
80 km (50 mi)
- B.
70 km (40 mi)
- C.
60 km (30 mi)
- D.
100 km ( 70 mi
Correct Answer
A. 80 km (50 mi) -
- 6.
UWB, Ultra Wideband is a wireless technology designed for short-range PAN and is based on what?
- A.
IEEE 802.15.3A
- B.
IEEE 802.14.3A
- C.
IEEE 802.13.3A
- D.
IEEE 802.12.3A
Correct Answer
A. IEEE 802.15.3A -
- 7.
Radio frequency identification (RFID) denotes technologies that use radio waves for automatic identifcation and data collection?
- A.
True
- B.
False
Correct Answer
A. True -
- 8.
The chip and the antenna together are called an RFID tansponder or an RFID tag.
- A.
True
- B.
False
Correct Answer
A. True -
- 9.
What are some applications for RFID?
- A.
Security and access control
- B.
Asset management and Animal tracking and lovestock management
- C.
Airline baggage tracking, and Wristbands (e.g., in hospitals, amusement parks)
- D.
Antitheft systems for automobles, and key cards and smart cards
- E.
Toolbooths
Correct Answer(s)
A. Security and access control
B. Asset management and Animal tracking and lovestock management
C. Airline baggage tracking, and Wristbands (e.g., in hospitals, amusement parks)
D. Antitheft systems for automobles, and key cards and smart cards
E. Toolbooths -
- 10.
An RFID system comprises a reader (or interrogator) of what two things?
- A.
Associated antenna
- B.
Transponder
- C.
Toolbooths
- D.
Security and access control.
Correct Answer(s)
A. Associated antenna
B. Transponder -
- 11.
What are the characteristics of Proximity integrated circuit cards (PICCs)?
- A.
Distance up to 101 mm (4 in)
- B.
Designed for electronic wallets and smart cards
- C.
More encryption and security features
- D.
Designed for smart lables and access control
- E.
Fewer security features
Correct Answer(s)
A. Distance up to 101 mm (4 in)
B. Designed for electronic wallets and smart cards
C. More encryption and security features -
- 12.
What are characteristics of Vicinity-integrated circuits cards (VICCs)
- A.
Designed for electronic wallets and smart cards
- B.
Fewer security features
- C.
Distance up to 750 mm (29.53 in )
- D.
Distance up to 101 mm (4 in)
- E.
Designed for smart lables and access control
Correct Answer(s)
B. Fewer security features
C. Distance up to 750 mm (29.53 in )
E. Designed for smart lables and access control -
- 13.
Both VICCs and PICCs card standards use a ______ megahertz (MHz) air interface?
- A.
13.62
- B.
13.56
- C.
13.82
- D.
13.55
- E.
13.22
Correct Answer
B. 13.56 -
- 14.
Typical barriers and obstruction to EM waves include buildings and other man-made objects. What are Natural obstructions?
- A.
Trees
- B.
Hills,
- C.
Bodies of water
- D.
Mountains
- E.
All the above.
Correct Answer
E. All the above. -
- 15.
_______ is the signal attenuation that would result if all absorbing, diffracting, obstructing, refracting, scattering, and reflecting influences were removed.
- A.
Line of sight
- B.
Free space loss
- C.
Spectrum groups
- D.
Absorption
Correct Answer
B. Free space loss -
- 16.
Define Absorption
- A.
Adrupt change in direction of a wave front at the interface between two dissimilar media so that the incident wave front returns into the medium from which it originated.
- B.
Abrupt change in direction of a wave front at the interface between two dissimilar media as the incident wave front enters the second medium.
- C.
Change in the level, direction, frequency, or polarization of incident radiation when it encounters small particles or inhomogeneous particles or inhomogeneous particles, whose size is similar to or smaller thatn the wavelength of the incident radiation.
- D.
Bending of sound, radio, or light waves around an object, barrier, or aperture edge.
- E.
Is the loss of energy in an EM signal as it passes through a medium.
Correct Answer
E. Is the loss of energy in an EM signal as it passes through a medium. -
- 17.
Electromagnetic radiation (EMR) is radiation composed of oscillation electric and magnetic fields and propagated through a medium.
- A.
True
- B.
False
Correct Answer
A. True -
- 18.
The frequency or EM spectrum is the range of frequencies of EMR from______ to infinity?
- A.
One
- B.
Zero
- C.
Two
- D.
Twenty
- E.
Three
Correct Answer
B. Zero -
- 19.
Ultrahigh frequency (UHF)- cellular and trunk radio = _____ to ______?
- A.
300 MHz to 3000 MHz
- B.
3 GHz to 30 GHz
- C.
300 Hz to 3000 Hz
- D.
30 MHz to 300 MHz
Correct Answer
A. 300 MHz to 3000 MHz -
- 20.
Is this right Em = 0 to infinity
- A.
Yes
- B.
No
Correct Answer
A. Yes -
- 21.
Line of sight (LoS equipment requires an unobstructed path between ___ or more points. The unobstructed path must include enough clearance for the _____ zone determined by the frequency of the radio?
- A.
One, light
- B.
Two, output
- C.
Two, fresnel
- D.
One, frequency
- E.
Two, frequency
Correct Answer
C. Two, fresnel -
- 22.
Radio systems are comprised of the following: lightning protection systems, Supporting structure for antenna, structure in which to place the radio equipment, Feed line to connect the signal into the air and retrieve it from the air, battery or power source. What are several others?
- A.
Miscellaneous accessories, including are pressure systems, coaxial cable jumpers, media converters, frequency converters, tower lighting, filters, signal combiners, and site warning systems
- B.
Transmitter with a modulator to place information into the signal
- C.
Amplifier to increase the signal level
- D.
Receiver to hear the signal
- E.
Antenna to place the signal into the air and retrieve it from the air
Correct Answer(s)
A. Miscellaneous accessories, including are pressure systems, coaxial cable jumpers, media converters, frequency converters, tower lighting, filters, signal combiners, and site warning systems
B. Transmitter with a modulator to place information into the signal
C. Amplifier to increase the signal level
D. Receiver to hear the signal
E. Antenna to place the signal into the air and retrieve it from the air -
- 23.
Encoders are not part of the Radio systems.
- A.
True
- B.
False
Correct Answer
A. True -
- 24.
Define the following statement: Cannot transmit and receive at the same time. common in portable two-way radios, WLANS. , and radio telemetry units.
- A.
Half-duplex
- B.
Frequency division duplex
- C.
Time division duplex
Correct Answer
A. Half-duplex -
- 25.
At very high frequencies _______ cables tend to have very high losses?
- A.
Fiber
- B.
Coaxial
- C.
Balanced twisted pair
Correct Answer
B. Coaxial -
- 26.
When choosing the antenna support structure for installation you must consider the following?
- A.
Wind zone and wind loading
- B.
Ice loading
- C.
If in the 8 km (5mi) approach area near and airport
- D.
If the antenna supporting structrue is more than 61 m (200 ft)
- E.
All the above
Correct Answer
E. All the above -
- 27.
Use jumpers to connect the feed line to the antenna and the equipment. This allows the system to be serviced without damaging any part of the system.
- A.
True
- B.
False
Correct Answer
A. True -
- 28.
At the top of the tower, the antenna requires what type of connector.
- A.
7/16 n connector
- B.
7/8 n connector
- C.
3/8 n connector
- D.
1/4 n connector
Correct Answer
B. 7/8 n connector -
- 29.
The feed line can be connected directly to the antenna.
- A.
False
- B.
True
Correct Answer
A. False -
- 30.
If you are installing a feed line or waveguide across a roof, it must be supported by at least ______ above the roof?
- A.
38 mm (1-1/2 in)
- B.
40 mm (2 in )
- C.
48 mm (2-1/2 in
- D.
25 mm (1 in)
Correct Answer
A. 38 mm (1-1/2 in) -
- 31.
A distributed antenna system (DAS) transmits or relays what?
- A.
IF signals
- B.
IR signals
- C.
RF signals
- D.
IVR signals
Correct Answer
C. RF signals -
- 32.
List the following cables commonly recongnized for DAS cable are?
- A.
Singlemode optical fiber cable
- B.
Multimode optical fiber cable
- C.
Unshielded twisted-pair cable
- D.
Shielded twisted-pair (STP) cable
- E.
Coaxial cable
Correct Answer(s)
A. Singlemode optical fiber cable
B. Multimode optical fiber cable
C. Unshielded twisted-pair cable
D. Shielded twisted-pair (STP) cable
E. Coaxial cable -
- 33.
For most application, Straight tip (ST) type (optical fiber), Subscriber connector (SC) type (optical fiber) are just a few connector types that are most commonly associated with DAS. What are several more?
- A.
N type (coaxial)
- B.
F type (coaxial)
- C.
Bayonet Neil-Concelman (BNC) type (coaxial)
- D.
RJ45 (unshielded or shielded twisted-pair
- E.
LC type (optical fiber)
Correct Answer(s)
A. N type (coaxial)
B. F type (coaxial)
C. Bayonet Neil-Concelman (BNC) type (coaxial)
D. RJ45 (unshielded or shielded twisted-pair
E. LC type (optical fiber) -
- 34.
Radiation cable technology allows a single length (run) ________ cable to be the radiation (Transmit) and receive antenna.
- A.
Singlemode
- B.
Balanced Twist pair
- C.
Coaxial
- D.
Multimode
Correct Answer
C. Coaxial -
- 35.
Coaxial cable has closely spaced slots in the inner conductor.
- A.
True
- B.
False
Correct Answer
B. False -
- 36.
Radiation cable is useful in combined systems because of its wide bandwith, allowing operation from ________ MHz to more than _____ GHz (with some limitaions)
- A.
60 MHz, 3 GHz
- B.
70 MHz , 2 GHz
- C.
100 MHz, 10 GHz
Correct Answer
B. 70 MHz , 2 GHz -
- 37.
Some commonly retransmitted services of a DAS include:
- A.
Cellular services
- B.
Personal communications sevices (PCS)
- C.
National Public Safety Planning Advisory Committe (NSPCA)
- D.
Enhanced specialized mobile radio (ESMR)
- E.
Pocket pagers
Correct Answer(s)
A. Cellular services
B. Personal communications sevices (PCS)
C. National Public Safety Planning Advisory Committe (NSPCA)
D. Enhanced specialized mobile radio (ESMR)
E. Pocket pagers -
- 38.
Some commonly retransmitted services of a DAS includes:
- A.
Emergency medical service (EMS) radio
- B.
Industrial, scientific, and medical (ISM)
- C.
Broadband radio service (BRS)
- D.
Wireless local loop
- E.
Local unlicensed walkie-talkies
Correct Answer(s)
A. Emergency medical service (EMS) radio
B. Industrial, scientific, and medical (ISM)
C. Broadband radio service (BRS)
D. Wireless local loop
E. Local unlicensed walkie-talkies -
- 39.
Distributed Antenna system (DAS) typically consists of active components that transmit and receive signals from the headend equipment or other backend elements and radiated RF signals into antennas.
- A.
True
- B.
False
Correct Answer
A. True -
- 40.
Backend equipment can include signal what?
- A.
Expansion modules
- B.
Power supplies
- C.
Host ports
- D.
Signal repeaters
- E.
Remote units
Correct Answer(s)
A. Expansion modules
D. Signal repeaters
E. Remote units -
- 41.
Passive distribution equipment in a DAS is defined as wquipment that does not require external power inputs.
- A.
True
- B.
False
Correct Answer
A. True -
- 42.
What are two common cabling topologies that serve a distributed antenna systems?
- A.
Star topology
- B.
Ring topology
- C.
Tapped-topology
Correct Answer(s)
A. Star topology
C. Tapped-topology -
- 43.
The role of an AP is to serve as a cental point for communications and management on a ______?
- A.
VLAN
- B.
PAN
- C.
WLAN
- D.
LAN
Correct Answer
C. WLAN -
- 44.
An AP cna be supplied with electrical power and connected to a cable netwok using a single _________ cable? This feature is commonly referred to as PoE.
- A.
Multimode
- B.
Singlemode
- C.
Ethernet
- D.
Balanced twisted pair
Correct Answer
C. Ethernet -
- 45.
Antennas used in WLAN environments can be classified into what three categories?
- A.
Unidirectional
- B.
Bi-directional
- C.
Directional
- D.
Omnidirectional
Correct Answer(s)
A. Unidirectional
C. Directional
D. Omnidirectional -
- 46.
What is a MAN is defined to be within what?
- A.
80km (60 MI)
- B.
80km (50 mi)
- C.
70km (60 mi)
Correct Answer
B. 80km (50 mi) -
- 47.
What does 802.15.4 stand for?
- A.
WAN
- B.
MAN
- C.
Token Ring
- D.
ZigBee
Correct Answer
D. ZigBee -
- 48.
Ulta Wideband (UWB) is a wireless technologh designed for what and is based on what?
- A.
WAN 802.11
- B.
PAN 802.15
- C.
Token Ring 802.5
- D.
Short range pans 802.15.3a
Correct Answer
D. Short range pans 802.15.3a -
- 49.
Both PICCs and VICCS cards use _______ MHz air interface.
- A.
15.56 mhz
- B.
13.56 mhz
- C.
14.56 mhz
- D.
50 mhz
Correct Answer
B. 13.56 mhz -
- 50.
Propagaion is the motion of waves through or along a medium.
- A.
True
- B.
False
Correct Answer
A. True -
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