Question 1:

What features should be considered when assessing a potential wiring closet?

   It should be secure and situated on the first (ground) floor

   It should be secure and close to the POP

   It should be within 150 m of the MDF and close to an entrance

   It should be an internal room and close to the electrical supply distribution

 

Question 2:

Why are exposed metal components normally connected to the ground, or earth, pin of a power outlet?

   The connection is needed to increase the resistance of the circuit to ground

   If an electrical fault occurs in the equipment, the connection will reduce the chance of shock

   Connecting the metal to ground makes it act like an insulator

   The ground connection can act as an alternative path for controlled current flow if the neutral wire is disconnected

 

Question 3:

What causes Electrostatic Discharge (ESD)?

   Long power lines

   Faulty electrical equipment

   An accumulation of static electricity

   An increase in atmospheric humidity

 

Question 4:

What is another term that can be used to describe an Intermediate Distribution Frame (IDF)?

   work area (WA)

   telecommunications outlet (TO)

   main cross-connect (MCC)

   horizontal cross-connect (HCC)

 

Question 5:

What is the purpose of providing a ground, or earth, connection on a wall power outlet?

   To reduce the resistance in the electrical circuit

   To link the neutral wire to ground

   To allow fault currents to flow to ground

   To complete the circuit for normal current to flow

 

Question 6:

Which of the following problems is caused by too high a humidity level in a wiring closet?

   Signal degradation

   Copper wire corrosion

   Insulation failure

   Power surges

 

Question 7:

Why can digital electronic equipment, such as a computer, malfunction if subjected to excessive power line noise?

   Logic gates are unable to correctly distinguish the noise polarity

   The noise enhances the digital signal edges

   The noise replaces the digital signal

   Logic gates are unable to correctly distinguish between a one and a zero

 

Question 8:

What is the ideal room temperature and relative humidity at which a wiring closet should be maintained?

   21 degrees Celsius / 45 % relative humidity

   21 degrees Fahrenheit / 45 % relative humidity

   45 degrees Celsius / 21 % relative humidity

   45 degrees Fahrenheit / 21 % relative humidity

 

Question 9:

What is the term used to describe a problem in an electrical system between the hot, or live, wire and the neutral wire?

   An isolated mode problem

   A ground fault problem

   A common mode problem

   A normal mode problem

 

Question 10:

What is an alternative name for backbone cabling?

   Horizontal cabling

   Vertical cabling

   Main cabling

   Trunk cabling

 

Question 11:

Which statement BEST describes the current flow in an electrical circuit with a DC source?

   It is constant over time

   It varies over time

   It increases with time

   It decreases with time

 

Question 12:

Why can problems between the hot, or live, wire and the safety ground, or earth, wire pose a hazard to the operation of your computer and network?

   They can present a shock hazard to the computer user

   They can do more damage to data signals than other types of problems

   They can produce power disturbances

   They can cause the unwanted operation of an uninterruptible power supply

 

Question 13:

A potential wiring closet has been identified in a building with a floor area of 930 sq. m. The distance from this closet to the furthest workstation is 127 m. How many ADDITIONAL wiring closets would need to be installed?

   0

   1

   2

   8

 

Question 14:

Which of the following environmental specifications are recommended for a wiring closet ?

   Carpeted floor; tiled walls and an inward opening door

   Wooden floor; brick walls and fluorescent lighting

   Tiled floor; internal power outlets and a dropped ceiling

   Raised floor; wood covered walls and an internal light switch

 

Question 15:

What is the maximum length specified for 62.5/125µm multimode optical fiber run between the MDF and IDF?

   90 m

   800 m

   2000 m

   3000 m

 

Question 16:

What are the three components that make up an uninterruptible power supply?

   A battery, inverter and battery charger

   A MOV, capacitor and diode

   A generator, changeover circuit and server software

   A circuit breaker, fuse and battery

 

Question 17:

What is one of the most significant causes of oscillatory noise problems on a power circuit?

   Long wiring runs

   School photocopiers

   Locating power cables in elevator shafts

   Air conditioners cycling on and off

 

Question 18:

What is a possible problem associated with multiple building grounds?

   They are often at the same potential with respect to each other

   They do not allow electrical current to flow between the buildings

   Separate protective devices are needed at each building

   They may present a shock hazard due to different potentials

 

Question 19:

Why is copper considered a good conductor of electricity?

   It offers a path of least resistance to current flow

   It is easily formed into wires

   It is cheaper than other metals

   It reduces power line noise

 

Question 20:

An electrician has investigated your recent power problems and has suggested that they are caused by oscillation. What is the BEST solution to your problem?

   Move the network server to another room

   Replace UTP with fiber optic cable

   Rewire the electrical system

   Fit commercial surge suppressors

 

Question 21:

Where does the horizontal cable extend?

   From the main distribution frame in the wiring closet to the vertical cross connect in the intermediate distribution frame

   From the telecommunications outlet in the work area to the horizontal cross-connect in the telecommunications closet

   From the patch panel in the point of presence to the backbone connection in the customer premises equipment

   From the telecommunications outlet in the wiring closet to the conduit in the intermediate distribution frame

 

Question 22:

What device is best used to minimize the effects of power line sags and brownouts?

   A primary protection device

   A surge suppressor

   An optical isolator

   An uninterruptible power supply

 

Question 23:

In a controlled electrical circuit, which path do electrons normally follow?

   From the positively charged source to ground

   From the negatively charged source to a positively charged source

   From the more positively charged source to the less positively charged source

   From the negatively charged source to ground

 

Question 24:

What function does an electrical insulator perform?

   It completes the circuit, allowing current to flow

   It reduces the resistance in an electrical circuit

   It allows a short circuit to be present

   It prevents uncontrolled current flow

 

Question 25:

Why is fiber optic cable commonly used as a network backbone between campus buildings?

   It provides a less resistive path for electrical current to flow from one building to another

   It enhances the signals at the physical layer

   It reduces the hazardous effects of electrical potential difference and lightning strikes

   It is cheaper and easier to install than copper wire