Identify the type of network cabling shown in the graphic.
Twisted pair
Coax
Fiber optic
Unshielded twisted pair
Shielded twisted pair
Which of the following are reasons why a plenum cable is commonly used in air handling spaces and run through firebreaks?
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.
Select the characteristics of unbounded media.
Use a physical medium
Transmit both voice and data signals
Use electromagnetic energy
Operate only within a 10 mile radius
At what radio frequency does Bluetooth operate?
5 GHz
2.4 GHz
300 GHz
100 GHz
Which form of wireless transmission transmits signals in the 10 KHz to 1 GHz frequency range?
Radio
Infrared
Microwave
What statements are true of data signaling in FHSS?
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.
Which forms of wireless media operate only when there are no obstacles in the transmission path?
Which unbounded media transmission method uses multiple frequencies to reduce interference and the likelihood of eavesdropping?
Spread spectrum
Broadcast radio
Choose the statement that defines electrical noise.
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.
Select the items that are sources of electrical noise.
Fluorescent lights
Solar storms
Wind storms
HVAC equipment
True or False? Differential signaling reduces electrical noise by distinguishing between the signals on two different inputs.
What is the process of installing a resistor on the end of a cable to prevent signal reflections called?
Draining
Grounding
Terminating
Shielding
You need to connect multiple networks that use the same protocol. Which networking device would best meet your needs?
Router
Bridge
Gateway
Switch
Which of these network devices is a common connecting point for various nodes or segments?
Hub
True or False? A gateway subdivides a LAN into segments.
Which statements are valid for a gateway?
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.
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