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What does Power over Ethernet (PoE) enable in a network?
a. Data transmission through fiber optics
b. Delivery of DC power over Ethernet cables
c. Only wireless data transmission
d. Data transmission through coaxial cables
Answer: b. Delivery of DC power over Ethernet cablescisco+2
Which IEEE standard introduced the original PoE?
a. IEEE 802.3at
b. IEEE 802.3af
c. IEEE 802.3bt
d. IEEE 802.11
Answer: b. IEEE 802.3afadvantech+2
The main purpose of PoE is to:
a. Reduce network security
b. Provide both data and power over a single cable
c. Increase wireless interference
d. Slow down data rates
Answer: b. Provide both data and power over a single cablenetworklessons+2
Which of the following is a typical powered device (PD) in a PoE setup?
a. PoE switch
b. RJ45 cable
c. IP camera
d. Patch panel
Answer: c. IP camerageeksforgeeks+2
What is the maximum power provided by IEEE 802.3af at the PSE (Power Sourcing Equipment) end?
a. 30W
b. 12.95W
c. 15.4W
d. 25.5W
Answer: c. 15.4Wnetworkacademy+2
The device that supplies power in a PoE network is called:
a. PSE (Power Sourcing Equipment)
b. PD (Powered Device)
c. PC (Personal Computer)
d. UPS (Uninterruptible Power Supply)
Answer: a. PSE (Power Sourcing Equipment)notes.networklessons+2
Which PoE mode supplies power using data pairs in the Ethernet cable?
a. Mode B
b. Mode A
c. Mode C
d. Mode D
Answer: b. Mode Aadvantech+1
What year was the original PoE standard ratified?
a. 2010
b. 2003
c. 2009
d. 2018
Answer: b. 2003lightyear+2
Which IEEE standard is known as PoE+?
a. IEEE 802.3af
b. IEEE 802.3at
c. IEEE 802.3bt
d. IEEE 802.11ac
Answer: b. IEEE 802.3atplanetechusa+2
What is the main difference between PoE and PoE+?
a. Cabling material
b. Power delivered
c. Number of ports
d. Cable length
Answer: b. Power deliverednetworkacademy+3
The maximum power provided by IEEE 802.3at at the PSE is:
a. 12.95W
b. 15.4W
c. 25.5W
d. 30W
Answer: d. 30Wlightyear+2
What is the corresponding power received by the PD under PoE+ (IEEE 802.3at)?
a. 71.3W
b. 12.95W
c. 25.5W
d. 15.4W
Answer: c. 25.5Wadvantech+2
In PoE Type 1, what is the maximum power received by the device?
a. 25.5W
b. 15.4W
c. 12.95W
d. 51W
Answer: c. 12.95Wnetworkacademy+2
Which PoE standard allows for up to 60W of power?
a. 802.3af
b. 802.3at
c. 802.3bt Type 3
d. 802.3bt Type 4
Answer: c. 802.3bt Type 3lightyear+1
What is the maximum output of IEEE 802.3bt Type 4?
a. 51W
b. 60W
c. 71.3W
d. 100W
Answer: d. 100Wadvantech+1
To enable PoE on a network, what is typically required?
a. Shielded twisted pair cables
b. Powered switch (PSE) or injector
c. Only Cat3 cables
d. Only fiber optics
Answer: b. Powered switch (PSE) or injectorflukenetworks+1
Which cable category is typically recommended for PoE+ or higher?
a. Cat3
b. Cat5e
c. Cat2
d. Coaxial
Answer: b. Cat5enetworkacademy+1
In which configuration does PoE use a midspan injector?
a. Mode A
b. Mode B
c. Mode C
d. Endspan
Answer: b. Mode Bflukenetworks+1
Which component negotiates power requirements in standards-based PoE?
a. Patch panel
b. PD and PSE
c. Router
d. Access point
Answer: b. PD and PSEnotes.networklessons+1
What does 4PPoE refer to?
a. Four-port PoE
b. Four pair power over Ethernet
c. PoE on Cat4 cables
d. Power over fiber Ethernet
Answer: b. Four pair power over Ethernetlightyear+1
What is a common symptom of insufficient PoE power delivery?
a. High bandwidth
b. Devices not powering on
c. Gigabit speed
d. Faster switching
Answer: b. Devices not powering onphihong+1
A benefit of PoE for device deployment is:
a. Reduced device compatibility
b. Flexible placement without power outlets
c. Higher latency
d. Mandatory wall outlets
Answer: b. Flexible placement without power outletsintellinetnetwork+1
What are common PoE-enabled devices?
a. Network switches
b. Wireless access points, IP phones
c. SSD drives
d. Desktop monitors
Answer: b. Wireless access points, IP phonesgeeksforgeeks+2
What is the main risk of using non-standard proprietary PoE?
a. High performance
b. Device incompatibility
c. Security improvement
d. Data rate enhancement
Answer: b. Device incompatibilitygeeksforgeeks+1
LLDP in PoE stands for:
a. Link Layer Discovery Protocol
b. Limited Layer Data Protocol
c. Layered Logic Device Platform
d. Linear Link Detection Protocol
Answer: a. Link Layer Discovery Protocolflukenetworks
What type of power does PoE supply over Ethernet cables?
a. AC
b. DC
c. Variable
d. Inductive
Answer: b. DCcisco+1
What is a best practice in PoE troubleshooting?
a. Ignore physical connections
b. Establish a troubleshooting plan and document issues
c. Avoid diagnostic tools
d. Only check logical settings
Answer: b. Establish a troubleshooting plan and document issuesphihong
What can a thermal camera help detect in a PoE network?
a. Bandwidth
b. Overheating issues
c. SSID
d. Network loops
Answer: b. Overheating issuesphihong
For which devices is PoE particularly useful?
a. Server CPUs
b. Devices far from electrical outlets
c. Devices with integrated batteries only
d. Only desktop PCs
Answer: b. Devices far from electrical outletsintellinetnetwork+1
What is the maximum cable length recommended for PoE?
a. 10 meters
b. 50 meters
c. 100 meters
d. 200 meters
Answer: c. 100 metersnetworklessons+1
Which organization developed PoE standards?
a. ISOC
b. IEEE
c. ISO
d. ITU
Answer: b. IEEEnotes.networklessons+2
In PoE, how many pairs are used by Type 3 and Type 4 for power?
a. One
b. Two
c. Three
d. Four
Answer: d. Fouradvantech+1
What is endspan in PoE?
a. Standalone injector use
b. Power is delivered from a PoE switch
c. Coaxial-based power
d. Wireless power transfer
Answer: b. Power is delivered from a PoE switchflukenetworks+1
What effect can cable distance have in PoE?
a. Increases available wattage
b. Causes power loss
c. Boosts data speed
d. Changes POE class
Answer: b. Causes power lossfs+1
Which is a common cause of PoE device failure?
a. Using certified devices
b. Damaged cables
c. Proper grounding
d. High-quality connectors
Answer: b. Damaged cablesfastcabling+2
What is passive PoE?
a. IEEE-standard PoE
b. Always-on power, no negotiation
c. Negotiated power levels
d. Proprietary active protocol
Answer: b. Always-on power, no negotiationflukenetworks
The Ethernet Alliance created a program to:
a. Certify PoE interoperability
b. Increase PoE speed
c. Lower PoE voltage
d. Enhance PoE security
Answer: a. Certify PoE interoperabilityflukenetworks
What protocol may be used for PoE capability advertisement?
a. LLDP
b. OSPF
c. IS-IS
d. EIGRP
Answer: a. LLDPflukenetworks
What happens if a PD requests higher power than the PSE can provide?
a. The PSE shuts down
b. Only the lower power is delivered or no power
c. Full power is provided
d. The cable burns
Answer: b. Only the lower power is delivered or no powernotes.networklessons+1
What is the purpose of PoE class levels?
a. Indicate the type of cable
b. Specify power requirements of devices
c. Device operating system
d. Number of cable pairs
Answer: b. Specify power requirements of devicesplanetechusa+1
Which PoE standard allows for up to 8 different class levels?
a. 802.3af
b. 802.3at
c. 802.3bt
d. 802.3x
Answer: c. 802.3btnotes.networklessons
Which factor can decrease actual wattage received by the device in PoE?
a. Cable length
b. Data rate
c. PoE class
d. Device type
Answer: a. Cable lengthfs+1
What is the function of a PoE splitter?
a. Split power and data for a non-PoE device
b. Merge cables
c. Join two switches
d. Amplify Ethernet signals
Answer: a. Split power and data for a non-PoE devicenetworkacademy+1
What voltage range is used in standard PoE?
a. 5-10V
b. 44-57V DC
c. 100-240V AC
d. 3.3V
Answer: b. 44-57V DCgeeksforgeeks+1
What does the abbreviation PSE stand for in PoE?
a. Power Sourcing Equipment
b. Port Switch Electrical
c. Power Switching Endpoint
d. Primary Source Equipment
Answer: a. Power Sourcing Equipmentadvantech+2
Can PoE be used with Gigabit Ethernet cables?
a. No
b. Only with adapters
c. Yes
d. Only with Cat3 cable
Answer: c. Yesnetworklessons+1
What tool can be used for testing PoE on a cable?
a. Cable tester with PoE capability
b. Optical loss test set
c. Multimeter for AC
d. Loopback plug only
Answer: a. Cable tester with PoE capabilityphihong+1
What property distinguishes PoE++ from PoE+?
a. Number of connectors
b. Maximum delivered power
c. Cable type only
d. Use with fiber
Answer: b. Maximum delivered powerplanetechusa+2
Which type of PoE standard is required for 802.11ac wireless APs with high power needs?
a. 802.3af
b. 802.3at
c. 802.3bt
d. 802.11n
Answer: c. 802.3btlightyear+2
What does verifying device compatibility help prevent in PoE networks?
a. Overpowering the grid
b. Device malfunction or failure
c. Recycling
d. Signal amplification
Answer: b. Device malfunction or failurephihong+1

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