How does AC line noise create problems?

How does AC line noise create problems? By adding unwanted voltage to the desired signal

What important feature should wall/ceiling openings for conduit have if the conduit contains network cabling?

What important feature should wall/ceiling openings for conduit have if the conduit contains network cabling? They should be sealed with smoke- and flame-retardant materials that meet all codes.

What happens if you touch two objects with different potential voltages

You complete the circuit and get a shock What happens if you touch two objects with different potential voltages You complete the circuit and get a shock

What is the POP?

Point of Presence – where the telephone service enters the building. What is the POP? Point of Presence – where the telephone service enters the building.

What network device is used in an extended star topology when the catchment area of one wiring closet is not enough?

What network device is used in an extended star topology when the catchment area of one wiring closet is not enough? Repeater

How can UTP backbone cabling facilitate entry of lightning into a building?

The copper provides a pathway for lightning to enter the building. How can UTP backbone cabling facilitate entry of lightning into a building? The copper provides a pathway for lightning to enter the building.

What is the TIA/EIA standard that specifies backbone cabling?

What is the TIA/EIA standard that specifies backbone cabling?

What is the first step in locating a wiring closet for a network?

What is the first step in locating a wiring closet for a network? Identify on a floor plan, all devices that will be connected to the network

When starting to design a network, what should be the first step in the process?

Collecting information about the organization. When starting to design a network, what should be the first step in the process? Collecting information about the organization.

What is the “one-hand rule”?

What is the “one-hand rule”? Only touch electrical devices with one hand at a time to prevent electricity from flowing through your body.

Does electricity flow from negative to positive or positive to negative?

Does electricity flow from negative to positive or positive to negative?

Why are common mode problems a hazard to you or you computer?

Why are common mode problems a hazard to you or you computer? They go directly to the computer chassis.

Why should fluorescent light fixtures be avoided in wiring closets?

Why should fluorescent light fixtures be avoided in wiring closets? They generate outside interference.

What kind of floor should the wiring room have?

What kind of floor should the wiring room have? Tile or other finished surface

Which type of networking media is now installed most often for backbone cabling?

62.5/125 micron fiber optic cable Which type of networking media is now installed most often for backbone cabling? 62.5/125 micron fiber optic cable

What is the purpose of the safety ground in a computer?

What is the purpose of the safety ground in a computer? Prevents metal parts from becoming energized with a hazardous voltage

What best describes the problems caused by electrostatic discharge (ESD)?

It destroys semiconductors and data. What best describes the problems caused by electrostatic discharge (ESD)? It destroys semiconductors and data.

What best describes the difference between AC and DC?

What best describes the difference between AC and DC? DC flows at a constant value, whereas AC rises and falls.

What kind of power disturbances can be caused by lightning strikes?

What kind of power disturbances can be caused by lightning strikes? Surges

If ACME Inc. occupies the first three floors of a building and each floor is 1500 square meters, how many wiring closets should be installed according to EIA/TIA 569?

If ACME Inc. occupies the first three floors of a building and each floor is 1500 square meters, how many wiring closets should be installed according to EIA/TIA 569? 6

What problem could be caused by a faulty ground wire connection at an outlet that is used by networking equipment?

What problem could be caused by a faulty ground wire connection at an outlet that is used by networking equipment? There would be potentially fatal voltages between the LANs UTP cabling and the chassis of a networking device.

How can the problem of electrical spikes be addressed?

How can the problem of electrical spikes be addressed? Surge suppressors

What is a brownout?

When 80% less than normal electricity is available. What is a brownout? When 80% less than normal electricity is available.

Where should the main distribution facility (MDF) be located in a multi-story building using an extended star topology?

On one of the middle floors Where should the main distribution facility (MDF) be located in a multi-story building using an extended star topology? On one of the middle floors

In what types of situations will a safety ground connection not be sufficient?

In what types of situations will a safety ground connection not be sufficient? When ground wires in separate locations have slightly different potential.

What is a common cause of oscillation often called harmonics?

What is a common cause of oscillation often called harmonics? Excessively long electrical wiring runs

What is a MOV?

A type of surge protector. It can absorb large currents without damage What is a MOV? A type of surge protector. It can absorb large currents without damage