Random Study Cards for Net Plus Flashcards
RADIUS
AAA
Provides Authentication and Authorization over UDP.
TACACS +
AAA
Only provides Authentication.
SIP
Session Initiation Protocol.
Used for VOIP.
Application layer protocol.
VTP
VLAN trunking protocol
AKA 802.1q
Prevents you from having to manually configure vlans on other switches.
Allows 2 switches to share vlan information.
Asset Tags
aka Asset Tracking Tags
can be labels or QR codes, or can include RFID chips that provide electronic tracking.
IP Sec
Can work in tunnel mode or transport mode.
Used in VPN to secure transmissions.
Uses Encapsulation Security Payload and Authentication Header as security protocols for encapsulation.
X.25
Is a WAN protocol that is used to create a continuous link between two offices. It employs switches, routers, and circuits to produce the best route to transfer data at any given time.
QoS
provides varying levels of network bandwidth based on traffic type. Each traffic type has it’s own queue, and priority. Traffic type with higher priority are preferred over lower priority traffic.
Traffic Shaping
is a specialized type of QoS where traffic from each host is monitored. When traffic from the host is too high, packets are then queued.
Can also define how much bandwidth can be used by different protocols on the network.
Fault Tolerance
The ability to respond to a single point of failure on a network.
Fault tolerance on servers involves RAID, UPS system, power conditioning, backups, and clustering.
RAS
Remote Access Service
Services provided by windows that allows remote access to the network via Dial Up connection.
You need to have RAS on the server, and DUN (Dial-up Networking) on the remote computer for this to work.
RAS allows you to access a network not connected to the internet.
What does turning off CSMA/CD on a switch provide?
Network devices will now operate in full duplex.
Because each switch port is connected to a single device and each device operates in it’s own collision domain, you can turn off CSMA/CD, thereby allowing full duplex mode.
CAN
Controlled Area Network
Used in industrial application, originally in automotive systems. It replaced bulking wiring systems, reducing costs.
It builds a network between controllers, allowing them to share information.
VIPA
Virtual IP Address
A single IP Address that may be shared among multiple domain names and servers.
By assigning an IP Address to a hosts, in no longer needs to depend on specific individual network interfaces.
Incoming packets target the host VIPA but are routed through to actual, specific network interfaces.
Helps to provide load balancing for incoming traffic, where switches or routers behind the scenes can distribute them evenly among a pool of available network interfaces.
Eliminates host dependencies on specific, individual network interfaces.
iptables
Linux command that allows you to control a firewall and filter packets.
Filters can be performed using packet type, packet source/destination or target.
