Common Devices
Also called a Layer 3 Switch
Router
Stands for modulator-demodulator
Modem
ff:ff:ff:ff:ff:ff
Layer 2 Broadcast
The most common domain name extension
.com commercial
.mil
What is received on one port is sent out all other ports
Hub
What Layer Device is a Media Converter
Layer 1 - Physical Layer
What DHCP Stands for
Dynamic Host Configuration Protocol
Translates human name to an IP address
A record
Serves as a bridge between wireless clients and wired network
Access Point
A switch works at this Layer of the OSI Model
Layer 2 or Data Link Layer
Hardware or software that allows workload to be distributed among several servers
Load Balancer
The last step in the DHCP process. The Server sends this.
DHCP Acknowledgement message
FQDN
Fully Qualified Domain Name
Points to the mail exchange server
MX record
Layer 2 Device that is required for your computer to be able to access the network
Network Interface Card
What does PBX stand for?
Private Branch Exchange
Allows device to always receive the same IP address from the DHCP server
IP Reservation
DHCP provides this DNS service
Dynamic DNS
Creates a secure connection (tunnel) between sending ans receiving networks over a public network
VPN Concentrator
Device that was replaced by switches
Bridge
Can be used to increase usable bandwidth for some kinds of packets by delaying other kinds
Packet Shaper
Needs to be configured on router interface if DHCP Server is not on the same LAN
DHCP Relay
An alias is known as this
CNAME
Device that monitors the network for malicious activity but does not stop the activity
Intrusion Detection System (IDS)