Question 1

What is the industry standard for rack height in rack units?
A)18U
B)22U
C)42U
D)54U

Accepted Answer

The industry standard for rack height in rack units is 42U, which is the most commonly used height for server racks in data centers and other IT environments. This height provides ample storage space for a large number of servers and other IT equipment while still remaining relatively compact and easy to manage. Choices A, B, and D are not commonly used standard rack heights.

Question 2

Describe the three different types of cabling recognized by TIA/EIA as acceptable for horizontal wiring.

Accepted Answer

TIA/EIA recognizes three possible cabling types for horizontal wiring: UTP,STP,or fiber opticcable.UTP (unshielded twisted pair)cable is a type of copper-based cable thatconsists of one or more insulated twisted-wire pairs encased in a plastic sheath.STP (shielded twisted pair)cable is atype of copper-based cable containing twisted-wire pairs that are not only individuallyinsulated,but also surrounded by a shielding made of a metallic substance such as foil.Fiber-optic cable is a form of cable that contains one or several glass or plastic fibers inits core and comes in two types: single-mode fiber (SMF)or multimode fiber (MMF).Copper-based cable transmits data via electric signals,and fiber-optic cable transmitsdata via pulsing light sent from a laser or light-emitting diode (LED).

Question 3

The radius of the maximum arc into which you can loop a cable without impairing data transmission is known as what option below?
A)metal stress factor
B)arc coefficient
C)bend radius
D)flex rating

Accepted Answer

The term "bend radius" refers to the minimum radius a cable can be bent without damaging the inner components, such as wires or fibers. It is a critical factor in ensuring proper data transmission since excessive bending can cause attenuation or signal loss. Therefore, the option C is the correct choice for this question. The other options, metal stress factor, arc coefficient, and flex rating, are not related to the issue of cable bending radius.

Question 4

Which method of transmission allows signals to travel in both directions over a medium simultaneously?
A)half duplex
B)simplex
C)full-duplex
D)multiplex

Accepted Answer

Full-duplex allows signals to travel in both directions over a medium simultaneously. Half-duplex only allows signals to travel in one direction at a time, and simplex only allows signals to travel in one direction. Multiplexing is a technique used to combine multiple signals into one transmission medium, but it doesn't inherently allow bidirectional transmission.

Question 5

What is the maximum frame size for Ethernet II frames on a VLAN?
A)1500 bytes
B)1518 bytes
C)1522 bytes
D)1496 bytes

Accepted Answer

The maximum frame size for Ethernet II frames on a VLAN is 1522 bytes. This accounts for the original Ethernet II maximum frame size of 1500 bytes plus the 4 bytes used for the VLAN tag (802.1Q tag).

Question 6

Cable that is coated with flame-resistant polyvinyl chloride (PVC)is acceptable for use in plenum areas.

Accepted Answer

Cable coated with flame-resistant PVC is not acceptable for use in plenum areas because it does not meet the stricter fire safety standards required for plenum-rated cables, which must not emit toxic fumes when burned.

Question 7

A power fluctuation that results in a temporary dimming of lights is known as a blackout.

Accepted Answer

A blackout is a complete loss of power, while a temporary dimming of lights is known as a brownout.

Question 8

Each type of cable has a prescribed bend radius ,which is the radius ofthe maximum arc into which you can loop a cable without impairing data transmission.

Accepted Answer

This statement is true. Each type of cable has a specific bend radius, which should be followed to avoid any data transmission issues.

Question 9

A NIC card cannot determine whether the frames it transmits and receives are using IP packets or a different layer 3 protocol,because the NIC does not operate higher than Layer 2 of the OSI model.

Accepted Answer

NICs operate at Layer 2 (Data Link Layer) of the OSI model and do not have the capability to determine the contents of higher layers such as Layer 3 (Network Layer). Therefore, a NIC cannot determine if frames are using IP packets or any other Layer 3 protocol.

Question 10

Describe the differences between a brownout and a blackout.

Accepted Answer

The answer of Describe the differences between a brownout and...

Question 11

Ethernet exists at what layer of the OSI model?
A)Layer 1
B)Layer 2
C)Layer 3
D)Layer 4

Accepted Answer

Ethernet exists at Layer 2 of the OSI model, which is the Data Link layer. This layer is responsible for providing error-free transfer of data between two connected devices on the same network. Ethernet is a common protocol used at this layer for local area networks (LANs).

Question 12

Which method of transmission allows signals to travel in both directions over a medium but in only one direction at a time?
A)full duplex
B)half duplex
C)simplex
D)multiplex

Accepted Answer

The half-duplex method of transmission allows signals to travel in both directions over a medium but in only one direction at a time. This is because the transmission medium can carry signals in both directions, but the devices on each end of the medium can only transmit or receive at a time, not both simultaneously. Full duplex allows for simultaneous transmission and reception by both devices, while simplex only allows communication in one direction. Multiplexing combines multiple signals onto a single medium.

Question 13

Explain how equipment should be configured in a rack to best optimize airflow and temperature.

Accepted Answer

The answer of Explain how equipment should be configured in...

Question 14

What type of power flaw involves a fluctuation in voltage levels caused by other devices on the network or by EMI?
A)brownout
B)blackout
C)noise
D)surge

Accepted Answer

Fluctuation in voltage levels caused by other devices on the network or by EMI is called noise. Brownout refers to a drop in voltage levels, blackout refers to a complete loss of power, and surge refers to a sudden increase in voltage levels.

Question 15

One watt is equal to how many volt-amps?
A)1.4
B)2
C)10
D)1,000

Accepted Answer

One watt is equal to one volt-amp.

Question 16

What steps should be taken to manage documentation at a cabling plant?

Accepted Answer

The answer of What steps should be taken to manage...

Question 17

Explain the difference between an inverter and a rectifier.

Accepted Answer

The answer of Explain the difference between an inverter and...

Question 18

The TIA/EIA standard for wall jacks in a work area require that at least one outlet be provided for data and one for voice.

Accepted Answer

The TIA/EIA standard does require at least one outlet for data and one for voice in a work area.

Question 19

How far away from fluorescent lights or other sources of EMI should cable be installed?
A)at least 3 feet
B)at least 5 feet
C)at least 10 feet
D)at least 20 feet

Accepted Answer

The standard recommendation is to install cables at least 3 feet away from fluorescent lights or other sources of electromagnetic interference (EMI) to avoid potential interference issues.

Question 20

What is the maximum allowable distance for horizontal wiring?
A)100 ft
B)100 m
C)90 m
D)90 ft

Accepted Answer

The maximum allowable distance for horizontal wiring, according to the ANSI/TIA/EIA-568-B standard, is 100 meters. This distance is designed to support a wide range of Ethernet technologies and is a standard in structured cabling for computer networks.

Quiz 4: Structured Cabling and Networking Elements

What is the industry standard for rack height in rack units?

Describe the three different types of cabling recognized by TIA/EIA as acceptable for horizontal wiring.

The radius of the maximum arc into which you can loop a cable without impairing data transmission is known as what option below?

Which method of transmission allows signals to travel in both directions over a medium simultaneously?

What is the maximum frame size for Ethernet II frames on a VLAN?

Cable that is coated with flame-resistant polyvinyl chloride (PVC)is acceptable for use in plenum areas.

A power fluctuation that results in a temporary dimming of lights is known as a blackout.

Each type of cable has a prescribed bend radius ,which is the radius ofthe maximum arc into which you can loop a cable without impairing data transmission.

A NIC card cannot determine whether the frames it transmits and receives are using IP packets or a different layer 3 protocol,because the NIC does not operate higher than Layer 2 of the OSI model.

Describe the differences between a brownout and a blackout.

Ethernet exists at what layer of the OSI model?

Which method of transmission allows signals to travel in both directions over a medium but in only one direction at a time?

Explain how equipment should be configured in a rack to best optimize airflow and temperature.

What type of power flaw involves a fluctuation in voltage levels caused by other devices on the network or by EMI?

One watt is equal to how many volt-amps?

What steps should be taken to manage documentation at a cabling plant?

Explain the difference between an inverter and a rectifier.

The TIA/EIA standard for wall jacks in a work area require that at least one outlet be provided for data and one for voice.

How far away from fluorescent lights or other sources of EMI should cable be installed?

What is the maximum allowable distance for horizontal wiring?