Cisco 1 - Networking Basics Chapter 3
Which of the following correctly describes the type of signal that the network
media carries?
1. Coaxial cable carries pulses of light
2. UTP cable carries impedance signals
3. STP cable carries electrical impulses
4. Fiber-optic cable carries electrical impulses
Perrine. J 07/15/09 Page 1

Cisco 1 - Networking Basics Chapter 3
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
Perrine. J 07/15/09 Page 2

Cisco 1 - Networking Basics Chapter 3
Select the characteristics specified by 10BaseT. (Choose three.)
1. twisted pair cable
2. T style connectors
3. baseband transmission
4. 10 gigabits per second data rate
5. 10 megabits per second data rate
6. decimal encoded data transmission
Perrine. J 07/15/09 Page 3

Cisco 1 - Networking Basics Chapter 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
Perrine. J 07/15/09 Page 4

Cisco 1 - Networking Basics Chapter 3
Which of the following describe the purpose of the conductive braid around the
insulator of a coaxial cable? (Choose three.)
1. power supply conductor
2. shield for noise reduction
3. signal ground connection
4. data signal carrying conductor
5. filter to prevent signal reflections
6. secondary filter channel connector
Perrine. J 07/15/09 Page 5

Cisco 1 - Networking Basics Chapter 3
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
Perrine. J 07/15/09 Page 6

Cisco 1 - Networking Basics Chapter 3
Which of the following is an external source of degradation of the signal on
cabling?
1. EMI caused by electrical motors
2. RFI caused by light leakage
3. Impedance caused by radio systems
4. RFI caused by lighting
Perrine. J 07/15/09 Page 7

Cisco 1 - Networking Basics Chapter 3
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
Perrine. J 07/15/09 Page 8

Cisco 1 - Networking Basics Chapter 3
Which effects comprise impedance? (Choose three.)
1. capacitance
2. voltage
3. current
4. resistance
5. inductance
6. power
Perrine. J 07/15/09 Page 9

Cisco 1 - Networking Basics Chapter 3
Which effects comprise impedance? (Choose three.)
• capacitance
• voltage
• current
• resistance
• inductance
• power
Perrine. J 07/15/09 Page 10

Cisco 1 - Networking Basics Chapter 3
How does crosstalk occur?
1. Cable wires that are too large in diameter
2. Too much noise in a cable’s data signal
3. Electrical motors and lighting
4. Electrical signals from other wires in a cable
Perrine. J 07/15/09 Page 11

Cisco 1 - Networking Basics Chapter 3
How does crosstalk occur?
• Cable wires that are too large in diameter
• Too much noise in a cable’s data signal
• Electrical motors and lighting
• Electrical signals from other wires in a cable
Perrine. J 07/15/09 Page 12

Cisco 1 - Networking Basics Chapter 3
Which of the following characteristics describe STP cable? (Choose three.)
1. costs more than UTP
2. easier to install than UTP
3. uses the shield to carry data signals
4. twisted pairs are not required because of the shield
5. must be grounded at both ends for high frequency signals
6. reduces both internal and external sources of interference
Perrine. J 07/15/09 Page 13

Cisco 1 - Networking Basics Chapter 3
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
Perrine. J 07/15/09 Page 14

Cisco 1 - Networking Basics Chapter 3
What type of UTP cable does the TIA/EIA-568B standard require for horizontal
cabling?
1. Tow pairs of 100-ohm cable
2. Two pairs of 150-ohm cable
3. Four pairs of 100-ohm cable
4. Four pairs of 150-ohm cable
Perrine. J 07/15/09 Page 15

Cisco 1 - Networking Basics Chapter 3
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
Perrine. J 07/15/09 Page 16

Cisco 1 - Networking Basics Chapter 3
Which of the following describe the light used for fiber optic transmission?
(Choose two.)
1. It is within the spectrum of visible light.
2. It is outside the spectrum of visible light.
3. The wavelengths are longer than red light.
4. It is within the spectrum of ultraviolet light.
5. The wavelengths are longer than visible light
Perrine. J 07/15/09 Page 17

Cisco 1 - Networking Basics Chapter 3
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
Perrine. J 07/15/09 Page 18

Cisco 1 - Networking Basics Chapter 3
What is Category 5 UTP cabling suitable for?
1. Transmitting data at speeds up to 10 Mbps
2. Transmitting data at speeds up to 100 Mbps
3. 10BASE-T networks
4. Token Ring networks
Perrine. J 07/15/09 Page 19

Cisco 1 - Networking Basics Chapter 3
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
Perrine. J 07/15/09 Page 20

Cisco 1 - Networking Basics Chapter 3
Which of the following describe the ray model of light? (Choose three.)
1. Light bends at the boundary of two transparent materials.
2. The speed of light is greatest when passing through optical glass.
3. The speed of light is constant no matter what material passes
through.
4. The optical density of the material determines how much the light will
bend.
5. The index of refraction is the ratio of the speed of light in a material
compared to a vacuum.
Perrine. J 07/15/09 Page 21

Cisco 1 - Networking Basics Chapter 3
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.
Perrine. J 07/15/09 Page 22

Cisco 1 - Networking Basics Chapter 3
Which grade of UTP cabling described in the TIA/EIA-568B standard is the
one most frequently recommended and implemented in installations today?
1. Category 2
2. Category 3
3. Category 4
4. Category 5
Perrine. J 07/15/09 Page 23

Cisco 1 - Networking Basics Chapter 3
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
Perrine. J 07/15/09 Page 24

Cisco 1 - Networking Basics Chapter 3
Which of the following are attributes of singlemode fiber optic cable? (Choose
two.)
1. one path of light
2. larger fiber optic core
3. uses LEDs as a light source
4. distances up to 5000 meters
5. higher bandwidth than multimode
Perrine. J 07/15/09 Page 25

Cisco 1 - Networking Basics Chapter 3
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
Perrine. J 07/15/09 Page 26

Cisco 1 - Networking Basics Chapter 3
What is the point that a device uses to measure and compare incoming digital
signals called?
1. Input point
2. Zero point
3. Null reference setting
4. Signal reference ground
Perrine. J 07/15/09 Page 27

Cisco 1 - Networking Basics Chapter 3
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
Perrine. J 07/15/09 Page 28

Cisco 1 - Networking Basics Chapter 3
Which of the following are characteristics of fiber optic light receivers? (Choose
two.)
1. react to multiple wavelengths
2. react to a specific wavelength
3. tuned to one wavelength for noise reduction
4. use PIN photodiodes to convert light pulses to electrical signals
Perrine. J 07/15/09 Page 29

Cisco 1 - Networking Basics Chapter 3
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
Perrine. J 07/15/09 Page 30

Cisco 1 - Networking Basics Chapter 3
How is the signal reference ground established?
1. By connecting the ground wire to the network wire
2. By connecting the network wire to jumper connector
3. By connecting the ground plane to the computer’s cabinet
4. By connecting the computer chassis to the network cable
Perrine. J 07/15/09 Page 31

Cisco 1 - Networking Basics Chapter 3
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 computer’s
cabinet
• By connecting the computer chassis to the network cable
Perrine. J 07/15/09 Page 32

Cisco 1 - Networking Basics Chapter 3
Which tasks must be performed when installing fiber optic cable? (Choose
three.)
1. install connectors
2. inspect laser signal using a microscope
3. cleave and polish cable ends
4. wash cable ends with mild soap and water
5. protect connector ends from dirt and damage
6. pull cables tight to reduce the number of bends and twists
Perrine. J 07/15/09 Page 33

Cisco 1 - Networking Basics Chapter 3
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
Perrine. J 07/15/09 Page 34

Cisco 1 - Networking Basics Chapter 3
Which devices could cause problems with a wireless transmission? (Choose
two.)
1. radio
2. TV
3. microwave
4. wireless phone
5. DVD remote control
Perrine. J 07/15/09 Page 35

Cisco 1 - Networking Basics Chapter 3
Which devices could cause problems with a wireless transmission? (Choose
two.)
• radio
• TV
• microwave
• wireless phone
• DVD remote control
Perrine. J 07/15/09 Page 36

Cisco 1 - Networking Basics Chapter 3
Which of the following best describes a collision?
1. The frames from two devices impact and are damaged when they meet
on the physical media
2. Two nodes transmit at the same time and one data packet has priority,
so it obliterates the lesser packet
3. Two data transmissions cross paths on the network media and corrupt
each other
4. A data transmission is corrupted due to an energy spike over the
network media
Perrine. J 07/15/09 Page 37

Cisco 1 - Networking Basics Chapter 3
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
Perrine. J 07/15/09 Page 38

Cisco 1 - Networking Basics Chapter 3
Which of the following are typical specifications for data transmission cables?
(Choose three.)
1. achievable bit transmission speeds
2. supported data encoding schemes
3. minimum distance between hosts
4. maximum distance before fatal attenuation
5. intended transmission type
6. intended bit level protocols type
Perrine. J 07/15/09 Page 39

Cisco 1 - Networking Basics Chapter 3
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
Perrine. J 07/15/09 Page 40

Cisco 1 - Networking Basics Chapter 3
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?
1. 25%
2. 40%
3. 50%
4. 70%
Perrine. J 07/15/09 Page 41

Cisco 1 - Networking Basics Chapter 3
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%
Perrine. J 07/15/09 Page 42

Cisco 1 - Networking Basics Chapter 3
Which term refers to the amount of signal power loss that can be tolerated on
a fiber optic link?
1. linear laser light loss
2. optical link loss budget
3. acceptable decibel power reduction
4. maximum allowable light attenuation
Perrine. J 07/15/09 Page 43

Cisco 1 - Networking Basics Chapter 3
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
Perrine. J 07/15/09 Page 44