RCDD TOPIC 1 - TOPIC 7 Exam | Questions with
100% Correct Answers | Verified | Latest Update
2026
Save
Practice questions for this set
Learn 1 /7 Study with Learn
A. 18 sq m (193 sq ft)
Choose an answer
If the input signal power to a communication system is 1 W and the output power is 1
1
mW, the system attenuation is:
If an Equipment Room (ER) needs to accommodate additional connections, what
2
should be the new size of the room?
The conversion of an analog speech signal to a Pulse Code Modulation (PCM) digital
3
signal involves all of the following steps EXCEPT:
, A video camera has a coaxial cable output. The video signal is to be distributed to
4 devices that have balanced twisted pair inputs. The transition between these two
different transmission media can be accomplished by using a:
Don't know?
Terms in this set (127)
If the input signal power to a C. 30 dB
communication system is 1 W and the
output power is 1 mW, the system
attenuation is:
The signal at the input to a balanced B. 30 dB
twisted pair cable is 10 mW. The
cable is 1000 feet long and has an
attenuation of 1 dB per 100 feet. This
cable is connected to the input of a
receiver. The noise level at the input
to the receiver is 1 microwatt. What is
the signal-to-noise ratio (SNR) (dB)
at the receiver input?
A SONET OC-1 channel can carry 672 C. 2.5 Gbps
voice signals and has a data rate of
51.84 Mbps. A SONET OC-48 channel
can carry 32,256 voice channels.
What MINIMUM data rate is required
for the OC-48 channel?
All of the following are nominal A. 700 nm
wavelengths for laser light sources
EXCEPT:
, A video camera has a coaxial cable A. Balun
output. The video signal is to be
distributed to devices that have
balanced twisted pair inputs. The
transition between these two
different transmission media can be
accomplished by using a:
The public telephone system is an C. Full-duplex
example of a _________ system.
Wave division multiplexing (WDM) is D. Frequency division multiplexing
most similar to:
You must place CAT6 cable above a C. Solid metallic conduit
factory floor with automated welding
machines and hammer forges. Of the
following, what type of shielding
would be most effective?
You must place a cable between 2 D. STP
equipment locations with separate
grounds having a potential
difference between them of 2.1 V
rms. Which one of the following
cables should NOT be used?
Two sinusoidal signals have the same A. Zero
amplitude (A) and the same
frequency (f). They differ in phase by
180 degrees. If these two signals are
added together, the result is a
sinusoidal signal having an amplitude
of:
100% Correct Answers | Verified | Latest Update
2026
Save
Practice questions for this set
Learn 1 /7 Study with Learn
A. 18 sq m (193 sq ft)
Choose an answer
If the input signal power to a communication system is 1 W and the output power is 1
1
mW, the system attenuation is:
If an Equipment Room (ER) needs to accommodate additional connections, what
2
should be the new size of the room?
The conversion of an analog speech signal to a Pulse Code Modulation (PCM) digital
3
signal involves all of the following steps EXCEPT:
, A video camera has a coaxial cable output. The video signal is to be distributed to
4 devices that have balanced twisted pair inputs. The transition between these two
different transmission media can be accomplished by using a:
Don't know?
Terms in this set (127)
If the input signal power to a C. 30 dB
communication system is 1 W and the
output power is 1 mW, the system
attenuation is:
The signal at the input to a balanced B. 30 dB
twisted pair cable is 10 mW. The
cable is 1000 feet long and has an
attenuation of 1 dB per 100 feet. This
cable is connected to the input of a
receiver. The noise level at the input
to the receiver is 1 microwatt. What is
the signal-to-noise ratio (SNR) (dB)
at the receiver input?
A SONET OC-1 channel can carry 672 C. 2.5 Gbps
voice signals and has a data rate of
51.84 Mbps. A SONET OC-48 channel
can carry 32,256 voice channels.
What MINIMUM data rate is required
for the OC-48 channel?
All of the following are nominal A. 700 nm
wavelengths for laser light sources
EXCEPT:
, A video camera has a coaxial cable A. Balun
output. The video signal is to be
distributed to devices that have
balanced twisted pair inputs. The
transition between these two
different transmission media can be
accomplished by using a:
The public telephone system is an C. Full-duplex
example of a _________ system.
Wave division multiplexing (WDM) is D. Frequency division multiplexing
most similar to:
You must place CAT6 cable above a C. Solid metallic conduit
factory floor with automated welding
machines and hammer forges. Of the
following, what type of shielding
would be most effective?
You must place a cable between 2 D. STP
equipment locations with separate
grounds having a potential
difference between them of 2.1 V
rms. Which one of the following
cables should NOT be used?
Two sinusoidal signals have the same A. Zero
amplitude (A) and the same
frequency (f). They differ in phase by
180 degrees. If these two signals are
added together, the result is a
sinusoidal signal having an amplitude
of:
