2.2 Neteorking Hardware 2 Flashcards
What is the purpose of a patch panel in networking?
To organize and connect network cables in a central location.
What type of cables typically connect to a patch panel?
Ethernet cables, such as Cat5e, Cat6, or Cat6a.
What is the advantage of using a patch panel?
It provides a clean, organized way to manage and troubleshoot network connections.
What is a hardware firewall?
A standalone device that monitors and controls network traffic based on security rules.
What is a software firewall?
A firewall installed on a device that protects the device itself and its network traffic.
What is the difference between stateful and stateless firewalls?
Stateful firewalls track the state of active connections, while stateless firewalls filter packets based solely on predefined rules.
What is PoE (Power over Ethernet)?
A technology that delivers power and data over Ethernet cables to devices.
What is the purpose of a PoE injector?
To add power to an Ethernet cable for devices that require PoE.
What is the main benefit of a PoE switch?
It combines network connectivity and power delivery for PoE-compatible devices.
What are the PoE standards?
IEEE 802.3af (PoE) and IEEE 802.3at (PoE+).
What is the maximum power output of IEEE 802.3af?
15.4 watts per port.
What is the maximum power output of IEEE 802.3at (PoE+)?
25.5 watts per port.
What is the difference between PoE and PoE+?
PoE+ provides higher power output (25.5W vs. 15.4W) and supports more demanding devices.
What is a cable modem?
A device that provides internet access via a cable television network.
What is the primary role of a DOCSIS standard in cable modems?
To define how data is transmitted over cable TV systems for internet access.
What does DOCSIS stand for?
Data Over Cable Service Interface Specification.
What is the function of a DSL modem?
To connect a network to the internet using a Digital Subscriber Line connection.
What are the two main types of DSL?
Asymmetric DSL (ADSL) and Symmetric DSL (SDSL).
What is the difference between ADSL and SDSL?
ADSL has faster download speeds than upload speeds, while SDSL offers equal speeds.
What is an Optical Network Terminal (ONT)?
A device that converts fiber-optic signals into electronic signals for home networks.
Where is the ONT typically installed?
At the customer’s premises as part of a fiber-to-the-home (FTTH) setup.
What is the function of a Network Interface Card (NIC)?
To connect a computer or device to a network.
What are the common types of NICs?
Ethernet NICs, wireless NICs, and fiber-optic NICs.
What is a virtual NIC?
A software-based network interface used in virtual machines for networking.
What is Software-Defined Networking (SDN)?
A networking approach that uses software to manage and configure network devices.
What is the role of a controller in SDN?
To provide centralized control and management of the network.
What is the primary advantage of SDN?
Flexibility and programmability in managing network resources.
What is a PoE splitter used for?
To separate power and data from a PoE connection for non-PoE devices.
What is the role of a patch panel in structured cabling?
To serve as a termination point for cables, enabling easier cable management.
What is the difference between passive and active patch panels?
Passive panels only organize connections, while active panels also amplify signals.
What is the purpose of a demilitarized zone (DMZ) in firewalls?
To isolate and protect internal networks from external threats while allowing limited public access.
What is the function of NAT in firewalls?
Network Address Translation masks internal IP addresses for security.
What is deep packet inspection (DPI)?
A firewall feature that examines packet data for malicious content.
What is the main limitation of a cable modem?
It shares bandwidth with other users in the area, potentially reducing speeds.
What is a hybrid fiber-coaxial (HFC) network?
A network that uses fiber-optic cables for backhaul and coaxial cables for last-mile delivery.
What is VDSL?
Very-high-bit-rate Digital Subscriber Line, offering faster speeds than ADSL.
What is the role of a PoE standard like IEEE 802.3bt?
To support higher power levels (up to 100W) for devices like PTZ cameras and large displays.
What is an Ethernet coupler?
A device that connects two Ethernet cables to extend their length.
What is the purpose of a media converter in a fiber network?
To convert signals between fiber-optic and copper media.
What is the role of a firewall appliance in enterprise networks?
To provide advanced security features like intrusion prevention and VPN support.
What is SD-WAN?
Software-Defined Wide Area Networking, which optimizes WAN performance using SDN principles.
What is the purpose of an ONT battery backup?
To ensure internet connectivity during power outages for VoIP and data services.
What is the difference between passive and active optical networks?
Passive networks use no powered components in distribution, while active networks use powered switches.
What is a multi-port NIC?
A NIC with multiple network ports for increased connectivity or redundancy.
What is OpenFlow in SDN?
A protocol used by SDN controllers to communicate with network devices.
What is the function of port forwarding in firewalls?
To redirect traffic from one port to another, often used for hosting services.
What is the benefit of VLAN support in a managed switch?
It allows network segmentation to improve performance and security.
What is the purpose of a cable tester?
To verify the functionality and integrity of network cables.
What is the role of a network tap in SDN monitoring?
To provide access to network traffic for analysis without disrupting it.
What is the function of a patch cord in networking?
To connect devices to patch panels, switches, or other equipment.
