Other Network+ Things to Know Flashcards
What types of interface issues?
- CRC Errors
- Runts
- Giants
- Drops
What is PDU?
- Power Distribution Unit
- A specialized device that distributes electric power to network components and computing equipment
- Power management
What is a CRC?
- Cylinder Redundancy Check Error
- The data block’s integrity check does not match the value during transmission
- Occur by electrical interference, faulty hardware or transmission issues
What is Runts?
Frames smaller than the minimum frame size
What is Giants?
Frames that exceed the maximum frame size of the network
What is Drops?
Occur when a device’s buffer is full and can’t accommodate incoming frames or packets anymore
What is client disassociation issues in Wireless Network?
- Impacts Wireless Network
- Idle, Session, or Authentication Timeout
- Wireless Network Change
- Manual Deletion
- Access Point Radio Reset
What is link aggregation?
- Known as trunking, Ethernet bonding, NIC teaming
- Combines multiple physical links into single logical combination
What half-duplex?
Can either send OR receive data
What is full-duplex?
Can send and receive data simultaneously
DataCenter Topology
What is North-South Traffic?
Traffic that enters datacenter from outside (Southbound traffic)
Traffic that leaves data center (North traffic)
DataCenter Topology
What is East-West Traffic?
● Data flow within a datacenter
● Example: In a spine and leaf architecture, all data flow between
servers is considered east-west traffic
What is Routing Table?
■ Helps determine which route entry is the best fit for the network
■ Routing decisions are based on Layer 3 information and map to Layer 2
What is ARP Cache?
- Used by routers to map IP addresses to MAC addresses within a local area network
What is prefix length in subnet?
The prefix length is the number of 1 bits in the subnet mask, determines the size of the subnet.
Note: For example, a prefix length of 255.255.255.0 indicates that the network portion of the IPv4 address is the leftmost 24 bits, which can also be written as /24 in CIDR notation.
What is Traffic Shaping?
- Known as Packet Shaping
- A congestion management method that regulates network data transfer by delaying the flow of less important or less desired packets.
What is Port-side Exhaust Airflow? (Standard air)
Air is drawn into the switch through the power supply side and expelled through the port side.
What is Port-side Intake Airflow?
(Reverse air)
Air is drawn into the switch through the port side (the side with the ethernet or fiber ports) and expelled through the power supply side.
What is Packet Capture Sensor?
- Known as network sniffers
- Designed to intercept and analyze network packets.
What is MDF?
- Main Distribution Frame
- Primary, central point where incoming and outgoing cables are terminated.
What is IDF?
- Intermediate Distribution Frame
- Local distribution point within a building or campus.
Which DHCP feature should they use to allocate different ranges of IP addresses to each department?
DHCP Scope
What is a Network Heat-Map?
- Known as WIFI Heat Map
- A graphical representation indicating areas of high and low network activity or performance
What is a PKI?
- Public Key Infrastructure
- Commonly used to manage digital certificates, ensuring secure communication and authentication over a network
What is EUI?
- Extended Unique Identifer
- EUI-64 is a method we can use to automatically configure IPv6 host addresses.
What is UPS?
- Uninterruptible Power Supply
- An electrical apparatus that provides emergency power during main power failures.
- Typically last 15 to 30 minutes
What is NTS?
- Network Time Security
- a time synchronization protocol designed to address security vulnerabilities inherent in traditional time synchronization protocols such as NTP and SNTP.
- Provides strong authentication, integrity protection, and confidentiality for time synchronization messages.
What is TableTop Exercise in pentration testing?
A cybersecurity simulation that tests an organization’s ability to respond to a cyber attack.
What is “subinterfaces” in networking?
It allows a single physical interface to be divided into multiple logical interfaces, improving network management and security
What is DHCP Snooping?
A security feature that monitors and controls DHCP traffic to prevent malicious DHCP servers from interfering with a network.
What is wet-pipe system in a fire suppression system?
The most basic type of fire suppression system, and it involved using a sprinkler system and pipes that always contain water in the pipes
What is pre-action system in a fire suppression system?
A pre-action system minimizes the risk of accidental release from a wet pipe system. With a pre-action system, both a detector actuation like a smoke detector and a sprinkler must be tripped prior to water being released.
What is special suppression system in a fire suppression system?
Special suppression systems, like a clean agent system, use either a halocarbon agent or inert gas. When releases, the agents will displace the oxygen in the room with the inert gas and suffocates the fire.
What is a WAF?
- Web Application Firewall
- An application-aware firewall can make decisions about what applications are allowed or blocked by a firewall, and TLS connections are created and maintained by applications.
