Practice questions for the RCDD exam chapter 1.
Copper, and Copper alloys
Copper-covered steel
Aluminum
Silver and Gold
Copper covered steel
High-Strength copper alloy
Silver
Annealed copper
Good
Poor
Typical
More flexible
Less costly
Less complex terminations
Better transmission performance at higher frequencies
True
False
True
False
Grounds
Conductors
A conductor and its environment
Positive and negative charges
Dielectric strenght
Dissipation factor
Dielectric constant
True
False
Polyvinyl chloride (PVC)
Fluorinated ethylene propylene (FEP)
Polyethylene (PE)
Ethylene chlorotrifluoroethylene (ECTFE)
Dielectric constant
Dissipation factor
Insulation resistance
Dielectric strenght
Dielectric constant
Dissipation factor
Dielectric strength
Insulation resistance
Minimize cross talk
Reduce cost by minimizing the amount of cable needed
Decrease capacitance unbalance
Decrease mutual inductance
Noise recieved from adjacent cables
Transmitter interference
The relative length and uniformity of pair twists
Between TR's and EF's
Between cross connects and telecommunications outlets
Between computers and other data processing equipment
Between routers and switches
True
False
Interior building walls
Exterior building walls
Ceiling spaces, including plenums
Mechanical rooms
1.5 percent
2.0 percent
2.5 percent
5 percent
Insulated conductor
Individual group of conductors within a core
Cable core
All of the Above
Foil
Steel
Gold
Braided metal strands
True
False
Kiliohm/meter or kiliohm/foot
Ohm/yard
Milliohm/millimeter or ohm/in.
Milliohm/meter or ohm/foot
Braided wire
Spiral-wrapped wire
Conductive nonmetallic materials
Hybrid, combining other types
All of the above
Braided wire
Solid wall metal tube (conduit)
Reverse spiral-wrapped wire
Metal foils
Nature of the signal to be transmitted
Magnitude of the EM fields through which the cable will run
Power of the transmitter
Sensitivity of the receiver
Electromagnetic compatibility (EMC) regulations
Poor means less than 20 dB
Poor means less than 10 dB
Fair means 10 to 40 dB
Fair means 20 to 40 dB
Excellent means more than 60 dB
True
False
A sinusoid
A trapizoid
A waveform
A polarized form
Voltage
Amplitude
Frequency
Size
Phase
300 Hz. - 3400 Hz.
200 Hz. - 1000 Hz.
20 Hz. - 20,000 Hz.
30 Hz. - 30,000 Hz.
20 Hz. - 20,000 Hz.
10 Hz. - 10,000 Hz.
300 Hz. - 3400 Hz.
200 Hz. - 4400 Hz.
Source of energy
Amplifier to strengthen the signal
Medium to carry the energy
Receiving device
Transceivers
Receivers
Transmitters
Receptors
True
False
600 ohms is prefferred for private line circuits and trunks
900 ohms is prefferred for private line circuits and trunks
600 ohms is prefferred for use in central office switching system line circuits
900 ohms is prefferred for use in central office switching system line circuits
100,000 km/s (62,000 mi/s)
200,000 km/s (124,000 mi/s)
300,000 km/s (186,000 mi/s)
400,000 km/s (249,000 mi/s)
Type of insulation used
Type of conductor
Thickness of the insulation used
Diameter of the conductor
1/3 second
1/4 second
1/2 second
1 second
Packet switching
Forward error correction (FEC)
Layer 3 routing
Quality of Service (QoS)
True
False
802.3ab
802.3af
802.3ah
802.3ap
15.4 watts at 44 to 57 V (nominally 48 V)
15.4 watts at 20 to 20 V (nominally 24 V)
10.4 watts at 8 to 17 V (nominally 12 V)
10.4 watts at 2 to 11 V (nominally 6 V)
VoIP switch with integrated power supply, installed in the TR
AC to DC rectifiers installed in EF
Midspan units, installed between the active switch and the patch panels.
VoIP switch with integrated power supply, installed in the EF
Local power sources
True
False
Filtering
Evaluating
Sampling
Quantizing/companding
Amplifying
Sampling
Filtering
Companding
Amplifiying
Vocoders
Transcievers
Codecs
Transmitters
Receivers
56
128
256
512
Inverting alternate pulses for ones and using a zero level for zeros
Sampling the input and amplifying the output
Companding the signal to the output
Using Manchester (or differential Manchester)
Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
Wait!
Here's an interesting quiz for you.