1522278
Frage 1
Antworten
-
Twisted pair
-
Coax
-
Fiber optic
Frage 2
Antworten
-
Unshielded twisted pair
-
Shielded twisted pair
-
Coax
-
Fiber optic
Frage 3
Frage
Which of the following are reasons why a plenum cable is commonly used in air handling spaces and run through firebreaks?
Antworten
-
It does not give off poisonous gases when burning.
-
Fire cannot travel through the cable because of the insulated metal shield that surrounds the conductors.
-
Fire cannot travel through the cable because the jacket is closely bound to the conductors.
-
It is more durable than using a PVC cable.
Frage 4
Frage
Select the characteristics of unbounded media.
Antworten
-
Use a physical medium
-
Transmit both voice and data signals
-
Use electromagnetic energy
-
Operate only within a 10 mile radius
Frage 5
Frage
At what radio frequency does Bluetooth operate?
Antworten
-
5 GHz
-
2.4 GHz
-
300 GHz
-
100 GHz
Frage 6
Frage
Which form of wireless transmission transmits signals in the 10 KHz to 1 GHz frequency range?
Antworten
-
Radio
-
Infrared
-
Microwave
Frage 7
Frage
What statements are true of data signaling in FHSS?
Antworten
-
Consist of multiple chips transmitted across a different frequency.
-
Sent over a single, high-frequency RF transmission band.
-
Transmitted across a single frequency, and later sent over a randomly selected frequency.
-
Less likely to be intercepted, but not significantly less susceptible to noise.
Frage 8
Frage
Which forms of wireless media operate only when there are no obstacles in the transmission path?
Antworten
-
Infrared
-
Radio
-
Microwave
Frage 9
Frage
Which unbounded media transmission method uses multiple frequencies to reduce interference and the likelihood of eavesdropping?
Antworten
-
Infrared
-
Microwave
-
Spread spectrum
-
Broadcast radio
Frage 10
Frage
Choose the statement that defines electrical noise.
Antworten
-
Solar radiation or man-made sources of data signals.
-
Extraneous signals introduced onto network media.
-
The reception of transmitted signals from a source.
-
Extraneous signals that enhance the quality of received transmission.
Frage 11
Frage
Select the items that are sources of electrical noise.
Antworten
-
Fluorescent lights
-
Solar storms
-
Wind storms
-
HVAC equipment
Frage 12
Frage
True or False? Differential signaling reduces electrical noise by distinguishing between the signals on two different inputs.
Antworten
- True
- False
Frage 13
Frage
What is the process of installing a resistor on the end of a cable to prevent signal reflections called?
Antworten
-
Draining
-
Grounding
-
Terminating
-
Shielding
Frage 14
Frage
You need to connect multiple networks that use the same protocol. Which networking device would best meet your needs?
Antworten
-
Router
-
Bridge
-
Gateway
-
Switch
Frage 15
Frage
Which of these network devices is a common connecting point for various nodes or segments?
Antworten
-
Hub
-
Router
-
Gateway
-
Switch
Frage 16
Frage
True or False? A gateway subdivides a LAN into segments.
Antworten
- True
- False
Frage 17
Frage
Which statements are valid for a gateway?
Antworten
-
It can connect networks with dissimilar protocols.
-
It can be implemented in a router.
-
It can be implemented only as a computer program.
-
It can be implemented as hardware or software.
Möchten Sie mit GoConqr kostenlos Ihre eigenen Quiz erstellen? eigenen Mehr erfahren.