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Mobile Devices 1 > 2.2 Neteorking Hardware 2 > Flashcards

2.2 Neteorking Hardware 2 Flashcards

1
Q

What is the purpose of a patch panel in networking?

A

To organize and connect network cables in a central location.

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2
Q

What type of cables typically connect to a patch panel?

A

Ethernet cables, such as Cat5e, Cat6, or Cat6a.

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3
Q

What is the advantage of using a patch panel?

A

It provides a clean, organized way to manage and troubleshoot network connections.

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4
Q

What is a hardware firewall?

A

A standalone device that monitors and controls network traffic based on security rules.

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5
Q

What is a software firewall?

A

A firewall installed on a device that protects the device itself and its network traffic.

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6
Q

What is the difference between stateful and stateless firewalls?

A

Stateful firewalls track the state of active connections, while stateless firewalls filter packets based solely on predefined rules.

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7
Q

What is PoE (Power over Ethernet)?

A

A technology that delivers power and data over Ethernet cables to devices.

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8
Q

What is the purpose of a PoE injector?

A

To add power to an Ethernet cable for devices that require PoE.

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9
Q

What is the main benefit of a PoE switch?

A

It combines network connectivity and power delivery for PoE-compatible devices.

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10
Q

What are the PoE standards?

A

IEEE 802.3af (PoE) and IEEE 802.3at (PoE+).

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11
Q

What is the maximum power output of IEEE 802.3af?

A

15.4 watts per port.

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12
Q

What is the maximum power output of IEEE 802.3at (PoE+)?

A

25.5 watts per port.

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13
Q

What is the difference between PoE and PoE+?

A

PoE+ provides higher power output (25.5W vs. 15.4W) and supports more demanding devices.

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14
Q

What is a cable modem?

A

A device that provides internet access via a cable television network.

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15
Q

What is the primary role of a DOCSIS standard in cable modems?

A

To define how data is transmitted over cable TV systems for internet access.

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16
Q

What does DOCSIS stand for?

A

Data Over Cable Service Interface Specification.

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17
Q

What is the function of a DSL modem?

A

To connect a network to the internet using a Digital Subscriber Line connection.

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18
Q

What are the two main types of DSL?

A

Asymmetric DSL (ADSL) and Symmetric DSL (SDSL).

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19
Q

What is the difference between ADSL and SDSL?

A

ADSL has faster download speeds than upload speeds, while SDSL offers equal speeds.

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20
Q

What is an Optical Network Terminal (ONT)?

A

A device that converts fiber-optic signals into electronic signals for home networks.

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21
Q

Where is the ONT typically installed?

A

At the customer’s premises as part of a fiber-to-the-home (FTTH) setup.

22
Q

What is the function of a Network Interface Card (NIC)?

A

To connect a computer or device to a network.

23
Q

What are the common types of NICs?

A

Ethernet NICs, wireless NICs, and fiber-optic NICs.

24
Q

What is a virtual NIC?

A

A software-based network interface used in virtual machines for networking.

25
Q

What is Software-Defined Networking (SDN)?

A

A networking approach that uses software to manage and configure network devices.

26
Q

What is the role of a controller in SDN?

A

To provide centralized control and management of the network.

27
Q

What is the primary advantage of SDN?

A

Flexibility and programmability in managing network resources.

28
Q

What is a PoE splitter used for?

A

To separate power and data from a PoE connection for non-PoE devices.

29
Q

What is the role of a patch panel in structured cabling?

A

To serve as a termination point for cables, enabling easier cable management.

30
Q

What is the difference between passive and active patch panels?

A

Passive panels only organize connections, while active panels also amplify signals.

31
Q

What is the purpose of a demilitarized zone (DMZ) in firewalls?

A

To isolate and protect internal networks from external threats while allowing limited public access.

32
Q

What is the function of NAT in firewalls?

A

Network Address Translation masks internal IP addresses for security.

33
Q

What is deep packet inspection (DPI)?

A

A firewall feature that examines packet data for malicious content.

34
Q

What is the main limitation of a cable modem?

A

It shares bandwidth with other users in the area, potentially reducing speeds.

35
Q

What is a hybrid fiber-coaxial (HFC) network?

A

A network that uses fiber-optic cables for backhaul and coaxial cables for last-mile delivery.

36
Q

What is VDSL?

A

Very-high-bit-rate Digital Subscriber Line, offering faster speeds than ADSL.

37
Q

What is the role of a PoE standard like IEEE 802.3bt?

A

To support higher power levels (up to 100W) for devices like PTZ cameras and large displays.

38
Q

What is an Ethernet coupler?

A

A device that connects two Ethernet cables to extend their length.

39
Q

What is the purpose of a media converter in a fiber network?

A

To convert signals between fiber-optic and copper media.

40
Q

What is the role of a firewall appliance in enterprise networks?

A

To provide advanced security features like intrusion prevention and VPN support.

41
Q

What is SD-WAN?

A

Software-Defined Wide Area Networking, which optimizes WAN performance using SDN principles.

42
Q

What is the purpose of an ONT battery backup?

A

To ensure internet connectivity during power outages for VoIP and data services.

43
Q

What is the difference between passive and active optical networks?

A

Passive networks use no powered components in distribution, while active networks use powered switches.

44
Q

What is a multi-port NIC?

A

A NIC with multiple network ports for increased connectivity or redundancy.

45
Q

What is OpenFlow in SDN?

A

A protocol used by SDN controllers to communicate with network devices.

46
Q

What is the function of port forwarding in firewalls?

A

To redirect traffic from one port to another, often used for hosting services.

47
Q

What is the benefit of VLAN support in a managed switch?

A

It allows network segmentation to improve performance and security.

48
Q

What is the purpose of a cable tester?

A

To verify the functionality and integrity of network cables.

49
Q

What is the role of a network tap in SDN monitoring?

A

To provide access to network traffic for analysis without disrupting it.

50
Q

What is the function of a patch cord in networking?

A

To connect devices to patch panels, switches, or other equipment.

Mobile Devices 1 (37 decks)

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