Which of the following correctly describes the type of signal that the network media carries?

1

• Which of the following correctly describes the
  type of signal that the network media carries?
• Coaxial cable carries pulses of light
• UTP cable carries impedance signals
• STP cable carries electrical impulses
• Fiber-optic cable carries electrical impulses

2

• Which of the following correctly describes the
  type of signal that the network media carries?
• Coaxial cable carries pulses of light
• UTP cable carries impedance signals
• STP cable carries electrical impulses
• Fiber-optic cable carries electrical impulses

3

• Select the characteristics specified by 10BaseT.
  (Choose three.)
• twisted pair cable
• T style connectors
• baseband transmission
• 10 gigabits per second data rate
• 10 megabits per second data rate
• decimal encoded data transmission

4

• Select the characteristics specified by 10BaseT.
  (Choose three.)
• twisted pair cable
• T style connectors
• baseband transmission
• 10 gigabits per second data rate
• 10 megabits per second data rate
• decimal encoded data transmission

5

• Which of the following describe the purpose of
  the conductive braid around the insulator of a
  coaxial cable? (Choose three.)
• power supply conductor
• shield for noise reduction
• signal ground connection
• data signal carrying conductor
• filter to prevent signal reflections
• secondary filter channel connector

6

• Which of the following describe the purpose of
  the conductive braid around the insulator of a
  coaxial cable? (Choose three.)
• power supply conductor
• shield for noise reduction
• signal ground connection
• data signal carrying conductor
• filter to prevent signal reflections
• secondary filter channel connector

7

• Which of the following is an external source of
  degradation of the signal on cabling?
• EMI caused by electrical motors
• RFI caused by light leakage
• Impedance caused by radio systems
• RFI caused by lighting

8

• Which of the following is an external source of
  degradation of the signal on cabling?
• EMI caused by electrical motors
• RFI caused by light leakage
• Impedance caused by radio systems
• RFI caused by lighting

9

• Which effects comprise impedance? (Choose
  three.)
• capacitance
• voltage
• current
• resistance
• inductance
• power

10

• Which effects comprise impedance? (Choose
  three.)
• capacitance
• voltage
• current
• resistance
• inductance
• power

11

• How does crosstalk occur?
• Cable wires that are too large in diameter
• Too much noise in a cables data signal
• Electrical motors and lighting
• Electrical signals from other wires in a cable

12

• How does crosstalk occur?
• Cable wires that are too large in diameter
• Too much noise in a cables data signal
• Electrical motors and lighting
• Electrical signals from other wires in a cable

13

• Which of the following characteristics describe
  STP cable? (Choose three.)
• costs more than UTP
• easier to install than UTP
• uses the shield to carry data signals
• twisted pairs are not required because of the
  shield
• must be grounded at both ends for high frequency
  signals
• reduces both internal and external sources of
  interference

14

• Which of the following characteristics describe
  STP cable? (Choose three.)
• costs more than UTP
• easier to install than UTP
• uses the shield to carry data signals
• twisted pairs are not required because of the
  shield
• must be grounded at both ends for high frequency
  signals
• reduces both internal and external sources of
  interference

15

• What type of UTP cable does the TIA/EIA-568B
  standard require for horizontal cabling?
• Tow pairs of 100-ohm cable
• Two pairs of 150-ohm cable
• Four pairs of 100-ohm cable
• Four pairs of 150-ohm cable

16

• What type of UTP cable does the TIA/EIA-568B
  standard require for horizontal cabling?
• Tow pairs of 100-ohm cable
• Two pairs of 150-ohm cable
• Four pairs of 100-ohm cable
• Four pairs of 150-ohm cable

17

• Which of the following describe the light used
  for fiber optic transmission? (Choose two.)
• It is within the spectrum of visible light.
• It is outside the spectrum of visible light.
• The wavelengths are longer than red light.
• It is within the spectrum of ultraviolet light.
• The wavelengths are longer than visible light

18

• Which of the following describe the light used
  for fiber optic transmission? (Choose two.)
• It is within the spectrum of visible light.
• It is outside the spectrum of visible light.
• The wavelengths are longer than red light.
• It is within the spectrum of ultraviolet light.
• The wavelengths are longer than visible light

19

• What is Category 5 UTP cabling suitable for?
• Transmitting data at speeds up to 10 Mbps
• Transmitting data at speeds up to 100 Mbps
• 10BASE-T networks
• Token Ring networks

20

• What is Category 5 UTP cabling suitable for?
• Transmitting data at speeds up to 10 Mbps
• Transmitting data at speeds up to 100 Mbps
• 10BASE-T networks
• Token Ring networks

21

• Which of the following describe the ray model of
  light? (Choose three.)
• Light bends at the boundary of two transparent
  materials.
• The speed of light is greatest when passing
  through optical glass.
• The speed of light is constant no matter what
  material passes through.
• The optical density of the material determines
  how much the light will bend.
• The index of refraction is the ratio of the speed
  of light in a material compared to a vacuum.

22

• Which of the following describe the ray model of
  light? (Choose three.)
• Light bends at the boundary of two transparent
  materials.
• The speed of light is greatest when passing
  through optical glass.
• The speed of light is constant no matter what
  material passes through.
• The optical density of the material determines
  how much the light will bend.
• The index of refraction is the ratio of the speed
  of light in a material compared to a vacuum.

23

• Which grade of UTP cabling described in the
  TIA/EIA-568B standard is the one most frequently
  recommended and implemented in installations
  today?
• Category 2
• Category 3
• Category 4
• Category 5

24

• Which grade of UTP cabling described in the
  TIA/EIA-568B standard is the one most frequently
  recommended and implemented in installations
  today?
• Category 2
• Category 3
• Category 4
• Category 5

25

• Which of the following are attributes of
  singlemode fiber optic cable? (Choose two.)
• one path of light
• larger fiber optic core
• uses LEDs as a light source
• distances up to 5000 meters
• higher bandwidth than multimode

26

• Which of the following are attributes of
  singlemode fiber optic cable? (Choose two.)
• one path of light
• larger fiber optic core
• uses LEDs as a light source
• distances up to 5000 meters
• higher bandwidth than multimode

27

• What is the point that a device uses to measure
  and compare incoming digital signals called?
• Input point
• Zero point
• Null reference setting
• Signal reference ground

28

• What is the point that a device uses to measure
  and compare incoming digital signals called?
• Input point
• Zero point
• Null reference setting
• Signal reference ground

29

• Which of the following are characteristics of
  fiber optic light receivers? (Choose two.)
• react to multiple wavelengths
• react to a specific wavelength
• tuned to one wavelength for noise reduction
• use PIN photodiodes to convert light pulses to
  electrical signals

30

• Which of the following are characteristics of
  fiber optic light receivers? (Choose two.)
• react to multiple wavelengths
• react to a specific wavelength
• tuned to one wavelength for noise reduction
• use PIN photodiodes to convert light pulses to
  electrical signals

31

• How is the signal reference ground established?
• By connecting the ground wire to the network wire
• By connecting the network wire to jumper
  connector
• By connecting the ground plane to the computers
  cabinet
• By connecting the computer chassis to the network
  cable

32

• How is the signal reference ground established?
• By connecting the ground wire to the network wire
• By connecting the network wire to jumper
  connector
• By connecting the ground plane to the computers
  cabinet
• By connecting the computer chassis to the network
  cable

33

• Which tasks must be performed when installing
  fiber optic cable? (Choose three.)
• install connectors
• inspect laser signal using a microscope
• cleave and polish cable ends
• wash cable ends with mild soap and water
• protect connector ends from dirt and damage
• pull cables tight to reduce the number of bends
  and twists

34

• Which tasks must be performed when installing
  fiber optic cable? (Choose three.)
• install connectors
• inspect laser signal using a microscope
• cleave and polish cable ends
• wash cable ends with mild soap and water
• protect connector ends from dirt and damage
• pull cables tight to reduce the number of bends
  and twists

35

• Which devices could cause problems with a
  wireless transmission? (Choose two.)
• radio
• TV
• microwave
• wireless phone
• DVD remote control

36

• Which devices could cause problems with a
  wireless transmission? (Choose two.)
• radio
• TV
• microwave
• wireless phone
• DVD remote control

37

• Which of the following best describes a
  collision?
• The frames from two devices impact and are
  damaged when they meet on the physical media
• Two nodes transmit at the same time and one data
  packet has priority, so it obliterates the lesser
  packet
• Two data transmissions cross paths on the network
  media and corrupt each other
• A data transmission is corrupted due to an energy
  spike over the network media

38

• Which of the following best describes a
  collision?
• The frames from two devices impact and are
  damaged when they meet on the physical media
• Two nodes transmit at the same time and one data
  packet has priority, so it obliterates the lesser
  packet
• Two data transmissions cross paths on the network
  media and corrupt each other
• A data transmission is corrupted due to an energy
  spike over the network media

39

• Which of the following are typical specifications
  for data transmission cables? (Choose three.)
• achievable bit transmission speeds
• supported data encoding schemes
• minimum distance between hosts
• maximum distance before fatal attenuation
• intended transmission type
• intended bit level protocols type

40

• Which of the following are typical specifications
  for data transmission cables? (Choose three.)
• achievable bit transmission speeds
• supported data encoding schemes
• minimum distance between hosts
• maximum distance before fatal attenuation
• intended transmission type
• intended bit level protocols type

41

• Your company has a new wireless network setup in
  their building. The boss has heard the throughput
  for a wireless network would be 11 Mbps. You
  mention that because of the way WLANs transmit
  and acknowledge data the actual percentage of
  throughput would be which of the following?
• 25
• 40
• 50
• 70

42

• Your company has a new wireless network setup in
  their building. The boss has heard the throughput
  for a wireless network would be 11 Mbps. You
  mention that because of the way WLANs transmit
  and acknowledge data the actual percentage of
  throughput would be which of the following?
• 25
• 40
• 50
• 70

43

• Which term refers to the amount of signal power
  loss that can be tolerated on a fiber optic
  link?
• linear laser light loss
• optical link loss budget
• acceptable decibel power reduction
• maximum allowable light attenuation

44

• Which term refers to the amount of signal power
  loss that can be tolerated on a fiber optic
  link?
• linear laser light loss
• optical link loss budget
• acceptable decibel power reduction
• maximum allowable light attenuation