2.2 Neteorking Hardware 2

Question 1

What is the purpose of a patch panel in networking?

Answer 1

To organize and connect network cables in a central location.

Question 2

What type of cables typically connect to a patch panel?

Answer 2

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

Question 3

What is the advantage of using a patch panel?

Answer 3

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

Question 4

What is a hardware firewall?

Answer 4

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

Question 5

What is a software firewall?

Answer 5

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

Question 6

What is the difference between stateful and stateless firewalls?

Answer 6

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

Question 7

What is PoE (Power over Ethernet)?

Answer 7

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

Question 8

What is the purpose of a PoE injector?

Answer 8

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

Question 9

What is the main benefit of a PoE switch?

Answer 9

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

Question 10

What are the PoE standards?

Answer 10

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

Question 11

What is the maximum power output of IEEE 802.3af?

Answer 11

15.4 watts per port.

Question 12

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

Answer 12

25.5 watts per port.

Question 13

What is the difference between PoE and PoE+?

Answer 13

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

Question 14

What is a cable modem?

Answer 14

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

Question 15

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

Answer 15

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

Question 16

What does DOCSIS stand for?

Answer 16

Data Over Cable Service Interface Specification.

Question 17

What is the function of a DSL modem?

Answer 17

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

Question 18

What are the two main types of DSL?

Answer 18

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

Question 19

What is the difference between ADSL and SDSL?

Answer 19

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

Question 20

What is an Optical Network Terminal (ONT)?

Answer 20

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

Question 21

Where is the ONT typically installed?

Answer 21

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

Question 22

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

Answer 22

To connect a computer or device to a network.

Question 23

What are the common types of NICs?

Answer 23

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

Question 24

What is a virtual NIC?

Answer 24

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

Question 25

What is Software-Defined Networking (SDN)?

Answer 25

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

Question 26

What is the role of a controller in SDN?

Answer 26

To provide centralized control and management of the network.

Question 27

What is the primary advantage of SDN?

Answer 27

Flexibility and programmability in managing network resources.

Question 28

What is a PoE splitter used for?

Answer 28

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

Question 29

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

Answer 29

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

Question 30

What is the difference between passive and active patch panels?

Answer 30

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

Question 31

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

Answer 31

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

Question 32

What is the function of NAT in firewalls?

Answer 32

Network Address Translation masks internal IP addresses for security.

Question 33

What is deep packet inspection (DPI)?

Answer 33

A firewall feature that examines packet data for malicious content.

Question 34

What is the main limitation of a cable modem?

Answer 34

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

Question 35

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

Answer 35

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

Question 36

What is VDSL?

Answer 36

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

Question 37

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

Answer 37

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

Question 38

What is an Ethernet coupler?

Answer 38

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

Question 39

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

Answer 39

To convert signals between fiber-optic and copper media.

Question 40

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

Answer 40

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

Question 41

What is SD-WAN?

Answer 41

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

Question 42

What is the purpose of an ONT battery backup?

Answer 42

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

Question 43

What is the difference between passive and active optical networks?

Answer 43

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

Question 44

What is a multi-port NIC?

Answer 44

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

Question 45

What is OpenFlow in SDN?

Answer 45

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

Question 46

What is the function of port forwarding in firewalls?

Answer 46

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

Question 47

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

Answer 47

It allows network segmentation to improve performance and security.

Question 48

What is the purpose of a cable tester?

Answer 48

To verify the functionality and integrity of network cables.

Question 49

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

Answer 49

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

Question 50

What is the function of a patch cord in networking?

Answer 50

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