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Network Plus > Platform(Module 3) > Flashcards

Platform(Module 3) Flashcards

1
Q

What type of cabling do most Ethernet adapters designed for use with copper cabling now support?
- Gigabit Ethernet
- USB cable
- HDMI cable
- Coaxial cable

A

Gigabit Ethernet

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2
Q

Which of the following is a unique identifier for each Ethernet network interface port?
- IP address
- Serial number
- MAC address
- Model number

A

MAC address

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3
Q

Which type of connectors do SFP transceivers use?
- LC
- RJ-45
- MPO
- SC

A

LC

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4
Q

What is the primary purpose of a Multi-Source Agreement (MSA) in the context of modular transceivers?
- To increase the data transmission speed of transceivers
- To standardize the size of transceivers
- To ensure compatibility between transceivers from different vendors
- To decrease the cost of transceivers

A

To ensure compatibility between transceivers from different vendors

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5
Q

What is the function of duplex fiber deployment?
- It uses two strands for transmit (Tx) and receive (Rx).
- It uses a single strand for both transmit and receive.
- It implements multiple channels distinguished by wavelengths.
- It uses multiple strands to implement Tx and Rx channels.

A

It uses two strands for transmit (Tx) and receive (Rx).

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6
Q

Which type of laser is typically used with single mode fiber transceivers?
- LED
- Incandescent bulbs
- Laser diodes
- VCSEL

A

Laser diodes

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7
Q

Which optical wavelengths are typically supported by different transceivers?
- 700 nm, 950 nm, and 1450 nm
- 850 nm, 1300 nm, and 1550 nm
- 900 nm, 1200 nm, and 1600 nm
- 650 nm, 850 nm, and 1300 nm

A

850 nm, 1300 nm, and 1550 nm

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8
Q

A network engineer is troubleshooting a newly installed fiber optic network that is experiencing significant signal loss. Upon inspection, it is discovered that the network uses duplex single mode fiber, but the installed transceivers are designed for multimode fiber with LEDs. What is the MOST likely cause of the signal loss?
- The fiber optic cables are too long for the network design.
- The network is using an incorrect wavelength for transmission.
- The transceivers are not compatible with the single mode fiber.
- The transceivers are operating at the wrong temperature.

A

The transceivers are not compatible with the single mode fiber.

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9
Q

What is an optical link budget?
- The total length of fiber optic cable used in a network
- The maximum data transfer rate of a fiber optic connection
- The amount of loss suffered by all components along a fiber transmission path
- The financial cost of setting up a fiber optic network

A

The amount of loss suffered by all components along a fiber transmission path

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10
Q

How is the EtherType value used to distinguish between payload type and frame length?
- EtherTypes are always used to indicate payload type, regardless of the value.
- EtherTypes are always used to indicate frame length, regardless of the value.
- EtherTypes are values of 0x0600 or greater to indicate protocol type; values less than this indicate payload length.
- EtherTypes values less than 0x0600 indicate protocol type; values greater than this indicate payload length.

A

EtherTypes are values of 0x0600 or greater to indicate protocol type; values less than this indicate payload length.

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11
Q

What is the purpose of the preamble and Start Frame Delimiter (SFD) in an Ethernet frame?
- To determine the type of protocol being used in the payload
- To perform error checking on the frame
- To indicate the beginning of a frame and synchronize clocking between sender and receiver
- To specify the destination address of the frame

A

To indicate the beginning of a frame and synchronize clocking between sender and receiver

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12
Q

What does the EtherType field in an Ethernet frame specify?
- The source address of the frame
- The error checking method used
- The length of the frame
- The type of protocol in the frame payload

A

The type of protocol in the frame payload

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13
Q

Which of the following BEST describes a MAC address?
- A 48-bit number that serves as a unique identifier for network devices
- A procedure that maps a dynamic IP address to a static physical machine address
- A logical grouping of computers through segmentation
- A set of computers and devices connected in one physical area

A

A 48-bit number that serves as a unique identifier for network devices

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14
Q

What does a MAC address of ff:ff:ff:ff:ff:ff signify?
- A broadcast transmission
- An invalid MAC address
- A unicast transmission
- A multicast transmission

A

A broadcast transmission

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15
Q

A network administrator is configuring a new network interface card (NIC) for a server in a data center. The NIC has a default MAC address of 00:1A:2B:3C:4D:5E. However, due to specific network policies, the administrator needs to change this to a locally administered address. Which of the following addresses could the administrator use to comply with this policy?
- AA:BB:CC:DD:EE:FF
- 02:1A:2B:3C:4D:5E
- FF:FF:FF:FF:FF:FF
- 00:1A:2B:3C:4D:5F

A

02:1A:2B:3C:4D:5E

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16
Q

What is the role of the CSMA/CD protocol in a hub-based Ethernet network?
- It encrypts data to prevent unauthorized access.
- It increases the data transmission speed of the hub.
- It manages the timing of data transmissions to avoid collisions.
- It assigns IP addresses to devices connected to the hub.

A

It manages the timing of data transmissions to avoid collisions.

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17
Q

At which layer of the OSI model does a hub operate?
- Data Link Layer
- Network Layer
- Application Layer
- Physical Layer

A

Physical Layer

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18
Q

What distinguishes a collision domain from a broadcast domain?
- Collision domains can span multiple routers, while broadcast domains are limited to a single switch.
- Collision domains are established by routers, while broadcast domains are established by switches.
- Broadcast domains require a layer 2 broadcast address to be established.
- Collision domains are about physically shared media, and their borders are established by bridges and switches.

A

Collision domains are about physically shared media, and their borders are established by bridges and switches.

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19
Q

Which solution would help isolate collision domains and allow for Gigabit Ethernet?
- Hub
- Switch
- Network Adapters
- Router

A

Switch

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20
Q

What happens when VLANs are configured on a switch?
- The switch can only support legacy network cards.
- The switch operates in half-duplex mode.
- The switch divides the network into multiple broadcast domains.
- The switch’s performance is significantly reduced.

A

The switch divides the network into multiple broadcast domains.

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21
Q

Which type of switch is typically used in a corporate network environment?
- Desktop switch
- Managed switch
- SOHO switch
- Unmanaged switch

A

Managed switch

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22
Q

What advantage does a stackable switch offer over a non-stackable switch?
- It simplifies network management by allowing multiple switches to be managed as a single unit.
- It cannot be managed as a single unit.
- It allows for physical stacking only, without any management benefits.
- It offers fewer ports.

A

It simplifies network management by allowing multiple switches to be managed as a single unit.

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23
Q

What is the primary benefit of configuring a switch port to “autonegotiate” speed and duplex settings?
- It manually sets the switch port to operate at a fixed speed and duplex mode, disregarding the capabilities of the connected device.
- It disables the switch port from connecting to devices that do not support gigabit speeds.
- It allows the switch port to automatically adjust to the highest possible speed and duplex mode based on the capabilities of the connected device.
- It restricts the switch port to operate only at the lowest possible speed for compatibility with older devices.

A

It allows the switch port to automatically adjust to the highest possible speed and duplex mode based on the capabilities of the connected device.

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24
Q

What command is used to enter the Global Configuration mode on a Cisco switch?
- enable
- configure terminal
- do copy running-config startup-config
- interface GigabitEthernet0/1

A

configure terminal

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25
Q

A network administrator is tasked with improving the efficiency of a corporate network by installing an Ethernet bridge. What outcome should the administrator expect?
- The Ethernet bridge will combine segments into a single collision domain.
- The Ethernet bridge will increase bandwidth for all segments.
- The Ethernet bridge will prevent traffic from one segment from impacting another.
- The Ethernet bridge will enable segments to share IP addresses.

A

The Ethernet bridge will prevent traffic from one segment from impacting another.

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26
Q

What happens if both sides of a link aggregation are set to passive mode?�
- The physical links are disabled.�
- A bonded channel is created with reduced bandwidth.�
- No bonded channel is created.�
- A bonded channel is created with increased latency.

A

No bonded channel is created.

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27
Q

Under what condition is link aggregation considered to provide full redundancy?�
- When the aggregated link’s bandwidth matches the sum of all individual links�
- When the business function depends on the full speed of the bonded link and one port fails�
- When only two network interfaces are combined�
- When all physical links in the aggregation are wireless connections

A

When the aggregated link’s bandwidth matches the sum of all individual links

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28
Q

What is the primary purpose of link aggregation/NIC teaming?�
- To combine multiple network connections into a single logical connection�
- To replace wireless connections with wired connections�
- To increase the cost of network infrastructure�
- To decrease the network speed

A

To combine multiple network connections into a single logical connection

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29
Q

What is the maximum size of the data payload in a standard Ethernet frame?�
- 9018 bytes�
- 1500 bytes�
- 18 bytes�
- 1518 bytes

A

1500 bytes

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30
Q

Which of the following are components of the 18-byte header in a standard Ethernet frame? (Select four.)�
- Destination MAC address�
- Source MAC address�
- EtherType field�
- Error checking field�
- Frame sequence number�
- Payload size indicator�
- Preamble

A

Destination MAC address, Source MAC address, EtherType field, Error checking field

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31
Q

What is the purpose of using jumbo frames?�
- To eliminate the need for error checking�
- To decrease the size of the Ethernet frame header�
- To support a data payload of exactly 1518 bytes�
- To increase the maximum transmission unit (MTU) for efficiency

A

To increase the maximum transmission unit (MTU) for efficiency

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32
Q

Which of the following is a multicast frame that contains spanning tree protocol information about switch ports that allows switches to exchange information?�
- Bus�
- BPDU�
- DPs�
- Lowest ID

A

BPDU

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33
Q

What happens when a Topology Change Notification (TCN) is received in a network using STP?�
- All ports are set to the blocking state.�
- The root bridge is re-elected.�
- Ports may change their status from forwarding to blocked or vice versa.�
- The network topology remains unchanged.

A

Ports may change their status from forwarding to blocked or vice versa.

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34
Q

Which feature prevents switching loops and ensures that there is only a single active path between any two switches?�
- 802.1x�
- Trunking�
- PoE�
- Spanning Tree Protocol

A

Spanning Tree Protocol

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35
Q

What command is used to display the current Spanning Tree Protocol configuration on a Cisco switch?�
- show spanning-tree�
- view spanning-tree configuration�
- show protocols spanning-tree�
- display spanning-tree status

A

show spanning-tree

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36
Q

Which command is used to designate a switch as the primary root bridge in Spanning Tree Protocol?�
- spanning-tree root primary�
- spanning-tree set root�
- spanning-tree primary root�
- spanning-tree root set primary

A

spanning-tree root primary

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37
Q

What improvement does Rapid Spanning Tree Protocol (RSTP) offer over the original 802.1D Spanning Tree Protocol?�
- Longer convergence times�
- Elimination of the listening state�
- Outages lasting tens of seconds�
- Increased number of port states

A

Elimination of the listening state

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38
Q

Which two IEEE standards are initially defined for Power over Ethernet (PoE) and later combined into the 802.3-2018 standard?�
- 802.3z and 802.3ab�
- 802.1Q and 802.1p�
- 802.3af and 802.3at�
- 802.11ac and 802.11n

A

802.3af and 802.3at

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39
Q

What is the purpose of the detection phase in a PoE switch?�
- To identify whether the connected device is PoE-enabled and determine its power consumption�
- To encrypt the data being transmitted to the device�
- To test the strength of the Ethernet cable�
- To determine the optimal data transmission rate

A

To identify whether the connected device is PoE-enabled and determine its power consumption

40
Q

Which of the following devices is most likely to be powered using PoE?�
- Laser printer�
- Laptop�
- Desktop computer�
- VoIP handset

A

VoIP handset

41
Q

When suspecting a network switch is causing issues, what should you analyze first?�
- Install additional cooling systems for the switch.�
- Replace all network cables connected to the switch.�
- Analyze the network topology to identify affected users and devices.�
- Increase the bandwidth of the switch to handle more traffic.

A

Analyze the network topology to identify affected users and devices.

42
Q

What actions do Uninterruptible Power Supplies (UPSs) allow during power anomalies? (Select two.)�
- Automatically repair damaged network cables.�
- Shut down the system gracefully.�
- Permanently replace the main power source.�
- Switch to a secondary power source.�
- Increase the processing power of servers.

A

Shut down the system gracefully, Switch to a secondary power source

43
Q

What does a blinking amber LED on a switch port signify?�
- The port is blocked by the spanning tree algorithm.�
- A fault has been detected.�
- The link is operating normally with traffic.�
- The link is connected but there is no traffic.

A

A fault has been detected.

44
Q

Which command provides operational status and configuration of a specific switch port?�
- show interface Gi1/0/24�
- show vlan brief�
- show mac address-table interface Gi1/0/24�
- show running-config interface Gi1/0/24

A

show interface Gi1/0/24

45
Q

What does the show interface command provide information about?�
- VLAN assignments�
- Routing protocols�
- Power supply status�
- State of all interfaces or a specified interface

A

State of all interfaces or a specified interface

46
Q

What does the show startup-config command display?�
- The switch’s configuration upon the next reboot�
- The switch’s temporary configuration�
- The list of errors logged by the switch�
- The switch’s current operational status

A

The switch’s configuration upon the next reboot

47
Q

What does an interface “flap” indicate?�
- A low number of CRC errors�
- A stable network connection�
- High-quality cable and termination�
- An interface switching between up and down states

A

An interface switching between up and down states

48
Q

What is a likely cause of giant frame errors?�
- A mismatch where the host is configured for jumbo frames, but the switch interface is not�
- Identical MTU settings across all network devices�
- A host and switch interface both configured for jumbo frames�
- A switch interface configured for jumbo frames, but the host is not

A

A mismatch where the host is configured for jumbo frames, but the switch interface is not

49
Q

What is a runt frame error?�
- A frame larger than the maximum permissible size�
- A frame that is smaller than the minimum size�
- A frame with no CRC errors�
- A frame transmitted with high signal quality

A

A frame that is smaller than the minimum size

50
Q

When a switch floods a frame out of all ports except the source port, what does this indicate about the destination MAC address?�
- The MAC address table is full and cannot learn new addresses.�
- The switch has a malfunctioning port.�
- The destination MAC address is correctly mapped in the MAC address table.�
- The destination MAC address is not found in the MAC address table.

A

The destination MAC address is not found in the MAC address table.

51
Q

What is the primary purpose of using the show mac address-table command?�
- To reset the MAC address table on the switch�
- To display the routing table of a switch�
- To list the IP addresses assigned to all devices on the network�
- To identify the MAC addresses associated with a particular switch port

A

To identify the MAC addresses associated with a particular switch port

52
Q

If spanning tree shuts down a port due to a loop, what should be done?�
- Disable the spanning tree protocol.�
- Inspect physical ports for looped connections.�
- Increase the bandwidth of the network.�
- Add more switches to the network.

A

Inspect physical ports for looped connections.

53
Q

What role does Spanning Tree Protocol (STP) play in preventing network loops?�
- It directly increases the speed of network traffic.�
- It assigns IP addresses to devices on the network.�
- It automatically shuts down redundant paths to prevent loops.�
- It encrypts data packets to secure network traffic.

A

It automatically shuts down redundant paths to prevent loops.

54
Q

What does a smaller American Wire Gauge (AWG) number indicate?�
- Thinner conductors�
- Thicker conductors�
- Less heat generation�
- Lower quality of cabling

A

Thicker conductors

55
Q

What is the significance of the “four-pair” mode in Power Over Ethernet (PoE)?�
- It delivers power over all four pairs of wires in the cable.�
- It is only compatible with the original PoE standard.�
- It delivers power only, without data transmission.�
- It is used exclusively for 10G Ethernet connections.

A

It delivers power over all four pairs of wires in the cable.

56
Q

Which method improves the thermal performance of PoE cabling?�
- Using unshielded cabling�
- Using thinner conductors�
- Using pure copper cabling with thicker conductors�
- Increasing the length of the cable

A

Using pure copper cabling with thicker conductors

57
Q

What steps should you take first when troubleshooting overheating issues with network devices? (Select two.)�
- Change the IP address of the devices.�
- Install additional RAM in the devices.�
- Decrease the network load.�
- Keep the devices away from direct sunlight.�
- Ensure good airflow around intake and outlet vents.

A

Keep the devices away from direct sunlight, Ensure good airflow around intake and outlet vents

58
Q

What is contained within the error checking field of an Ethernet frame?�
- The frame payload�
- The frame length�
- A 32-bit checksum known as a Cyclic Redundancy Check (CRC)�
- The preamble and Start Frame Delimiter (SFD)

A

A 32-bit checksum known as a Cyclic Redundancy Check (CRC)

59
Q

What is an endspan (or endpoint) power sourcing equipment (PSE) in the context of PoE?�
- A PoE switch that supplies power to connected devices�
- A device that boosts the signal strength of PoE connections�
- A device that encrypts data before it is sent over PoE�
- A type of Ethernet cable designed for PoE

A

A PoE switch that supplies power to connected devices

60
Q

A small office is planning to install several IP cameras for security purposes. Which of the following is the most appropriate solution for powering the IP cameras?�
- Use a power injector for each IP camera.�
- Use standard Ethernet cables to connect the IP cameras to the PoE+ switch.�
- Replace the existing switch with one that supports the IEEE 802.11ac standard.�
- Install separate AC adapters for each IP camera.

A

Use standard Ethernet cables to connect the IP cameras to the PoE+ switch.

61
Q

A network administrator needs to change a NIC’s MAC address to a locally administered address. Which of the following addresses could the administrator use?�
- AA:BB:CC:DD:EE:FF�
- 02:1A:2B:3C:4D:5E�
- FF:FF:FF:FF:FF:FF�
- 00:1A:2B:3C:4D:5F

A

02:1A:2B:3C:4D:5E

62
Q

You are tasked with selecting NICs for workstations requiring high-speed internet and secure connections. Which type of NIC should you choose?�
- A NIC with dual RJ-45 ports supporting Gigabit Ethernet�
- A NIC with a 56 Kbps modem adapter�
- A NIC with fiber optic ports and support for 10 Gbps Ethernet�
- A NIC with only 100 Mbps Ethernet support

A

A NIC with fiber optic ports and support for 10 Gbps Ethernet

63
Q

What is the primary function of an Ethernet switch in a network?�
- To establish collision and broadcast domain boundaries�
- To provide a wireless access point for devices�
- To encrypt network traffic for security purposes�
- To connect different network architectures

A

To establish collision and broadcast domain boundaries

64
Q

What is the purpose of the preamble and Start Frame Delimiter (SFD) in an Ethernet frame?�
- To determine the type of protocol being used in the payload�
- To perform error checking on the frame�
- To indicate the beginning of a frame and synchronize clocking between sender and receiver�
- To specify the destination address of the frame

A

To indicate the beginning of a frame and synchronize clocking between sender and receiver

65
Q

Which of the following devices is most likely to be powered using PoE?�
- Laser printer�
- Laptop�
- Desktop computer�
- VoIP handset

A

VoIP handset

66
Q

Which of the following is used by STP to select the root bridge in a network?�
- The highest priority value�
- The lowest MAC address�
- The highest IP address�
- The lowest combination of priority value and MAC address

A

The lowest combination of priority value and MAC address

67
Q

A workstation is experiencing poor network performance. Upon investigation, you find it’s running at 10 Mbps half-duplex. What command can you use to check the switch port’s configuration? (Select two.)�
- show running-config interface�
- show interface�
- show interface capabilities�
- show interface ethernet counters�
- show interface switchport

A

show running-config interface, show interface

68
Q

What is a runt frame error?�
- A frame larger than the maximum permissible size�
- A frame that is smaller than the minimum size�
- A frame with no CRC errors�
- A frame transmitted with high signal quality

A

A frame that is smaller than the minimum size

69
Q

What role does a hub play in an Ethernet network?�
- Acts as a multiport router to direct traffic.�
- Functions like a multiport repeater, where every port receives transmissions from any other port.�
- Serves as a dedicated switch to eliminate collisions.�
- Operates as a firewall to protect the network from external threats.

A

Functions like a multiport repeater, where every port receives transmissions from any other port.

70
Q

What type of NIC would best meet the needs of a data center requiring high bandwidth, redundancy, and support for both copper and fiber optic networks?�
- A NIC with a built-in 56 Kbps modem for backup connectivity�
- A NIC with a single fiber optic port supporting 1 Gbps Ethernet�
- A NIC with dual RJ-45 ports supporting Gigabit Ethernet and a separate fiber optic port�
- A NIC with a single RJ-45 port supporting 100 Mbps Ethernet

A

A NIC with dual RJ-45 ports supporting Gigabit Ethernet and a separate fiber optic port

71
Q

What is the role of the CSMA/CD protocol in a hub-based Ethernet network?�
- It encrypts data to prevent unauthorized access.�
- It increases the data transmission speed of the hub.�
- It manages the timing of data transmissions to avoid collisions.�
- It assigns IP addresses to devices connected to the hub.

A

It manages the timing of data transmissions to avoid collisions.

72
Q

What is the primary purpose of link aggregation/NIC teaming?�
- To combine multiple network connections into a single logical connection�
- To replace wireless connections with wired connections�
- To increase the cost of network infrastructure�
- To decrease the network speed

A

To combine multiple network connections into a single logical connection

73
Q

What command is used to display the current Spanning Tree Protocol configuration on a Cisco switch?�
- show spanning-tree�
- view spanning-tree configuration�
- show protocols spanning-tree�
- display spanning-tree status

A

show spanning-tree

74
Q

During a network upgrade, replacing a hub with an Ethernet bridge results in which outcome?�
- An increase in the number of collision domains�
- A reduction in the overall network security�
- A decrease in the network’s data transfer speeds�
- An increase in the number of broadcast domains

A

An increase in the number of collision domains

75
Q

What does an interface “flap” indicate?�
- A low number of CRC errors�
- A stable network connection�
- High-quality cable and termination�
- An interface switching between up and down states

A

An interface switching between up and down states

76
Q

How does an Ethernet bridge learn which MAC addresses are associated with its ports?�
- By sending requests to each connected device for its MAC address�
- By receiving special broadcast messages from routers�
- By listening to the traffic on its connected segments and building a forwarding database�
- By being manually configured with a list of MAC addresses and associated ports

A

By listening to the traffic on its connected segments and building a forwarding database

77
Q

What is the purpose of the metal clip placed over the exposed foil or braided shield on an IDC?�
- To prevent cable tangling�
- To bond the cable to the housing�
- To enhance signal quality�
- To increase cable flexibility

A

To bond the cable to the housing

78
Q

Which of the following states are NOT part of the original 802.1D standard port states for Spanning Tree Protocol?�
- Listening�
- Forwarding�
- Blocking�
- Discarding

A

Discarding

79
Q

How does Power over Ethernet (PoE) benefit network management?�
- It allows for faster data transmission speeds between devices.�
- It enables network management software to control connected devices and apply power management schemes.�
- It encrypts data transmitted over the network for enhanced security.�
- It increases the maximum length of Ethernet cables that can be used.

A

It enables network management software to control connected devices and apply power management schemes.

80
Q

Network data transfer works by modulating the properties of a transmission medium to encode a signal. Which of the following BEST describes that process?�
- A method of securing network data by encrypting the information before transmission�
- The physical infrastructure, such as cables and switches, used to transmit data in a network�
- The transmission of signals as electric current, infrared light, or radio waves�
- The process of converting digital signals into analog signals for transmission over telephone lines

A

The transmission of signals as electric current, infrared light, or radio waves

81
Q

Which of the following is true about single-mode fiber optic network cabling?�
- It’s optimized for 850 nm and 1300 nm light sources.�
- It has shorter segment lengths than multi-mode fiber optic cabling.�
- It’s less expensive than multi-mode fiber optic cabling.�
- Its central core is smaller than the standard multi-mode fiber optic cabling core.

A

Its central core is smaller than the standard multi-mode fiber optic cabling core.

82
Q

Which type of network is MOST suitable for a home office setup with multiple devices and occasional guest access?�
- MAN�
- PAN�
- SOHO�
- CAN

A

SOHO

83
Q

Which of the following networking topologies connects each network device to a central forwarding appliance?�
- Bus�
- Mesh�
- Star�
- Ring

A

Star

84
Q

What does a higher margin value indicate when measuring insertion loss?�
- The cable is heavier than standard cables.�
- The cable is further from reaching the maximum allowed insertion loss.�
- The cable exceeds the maximum allowed insertion loss.�
- The cable is closer to not meeting acceptable link standards.

A

The cable is further from reaching the maximum allowed insertion loss.

85
Q

After identifying the problem and testing the theory, what is the next step in the CompTIA Network+ troubleshooting methodology?�
- Verify full system functionality�
- Implement the solution�
- Document findings�
- Establish a new theory of probable cause

A

Implement the solution

86
Q

Which of the following is used by STP to select the root bridge in a network?�
- The highest priority value�
- The lowest MAC address�
- The highest IP address�
- The lowest combination of priority value and MAC address

A

The lowest combination of priority value and MAC address

87
Q

What is a major security weakness of using a hub to connect critical servers in a data center?�
- Hubs broadcast all incoming packets to every port, allowing potential eavesdropping.�
- Hubs can automatically block suspicious traffic.�
- Hubs encrypt all data.�
- Hubs use complex routing algorithms.

A

Hubs broadcast all incoming packets to every port, allowing potential eavesdropping.

88
Q

What is the primary purpose of a lessons-learned session in project management?�
- To assign blame for project failures�
- To finalize the project budget�
- To review the project’s outcomes and identify improvements�
- To celebrate the project’s successes

A

To review the project’s outcomes and identify improvements

89
Q

When diagnosing symptoms of a network issue, what should you do after identifying likely causes?�
- Test each possible cause until you find the right one�
- Replace all network components immediately�
- Document the symptoms�
- Ignore the symptoms and focus on unrelated components

A

Test each possible cause until you find the right one

90
Q

When identifying the cause of a problem, which two questions are key?�
- Did it ever work?�
- What has changed since it was last working?�
- Is the system turned on?�
- Should we switch to a different software platform?�
- Can the problem be solved by buying new hardware?

A

Did it ever work?, What has changed since it was last working?

91
Q

What is a common use for a tone generator in network troubleshooting?�
- To trace cables through walls or identify active cables in a bundle�
- To configure network switches�
- To test the power supply to network devices�
- To increase network bandwidth

A

To trace cables through walls or identify active cables in a bundle

92
Q

What is the most likely cause of network issues when the root bridge is located on a low-bandwidth link in STP?�
- High priority value�
- Misconfigured switches�
- Low-bandwidth bottleneck�
- Original 802.1D standard being used

A

Low-bandwidth bottleneck

93
Q

When encountering power problems in a network environment, to whom might these issues need to be escalated? (Select two.)�
- The power company�
- An electrician�
- A network engineer�
- A software developer�
- A network administrator

A

The power company, An electrician

94
Q

Which type of physical network topology is implemented when every wireless device communicates directly with every other device?�
- Star�
- Mesh�
- Bus�
- Ring

A

Mesh

95
Q

Which of the following correctly describes components in Ethernet media specifications? (Select three.)�
- Speed in Mbps or Gbps�
- Signal mode�
- Media type�
- Error correction type�
- Cable color coding

A

Speed in Mbps or Gbps, Signal mode, Media type

96
Q

How should a SOHO router be configured to block SMB file sharing on the Internet but allow it within the local network?�
- Disable the firewall entirely�
- Block SMB ports on the WAN interface but allow them on LAN and WLAN interfaces�
- Redirect all SMB traffic to cloud storage�
- Allow SMB traffic on the WAN interface

A

Block SMB ports on the WAN interface but allow them on LAN and WLAN interfaces

Network Plus (5 decks)

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