Layer 2
Addressing
Protocols
Security
Cisco Commands
200
the name of layer 2
Data link layer
200
ff.ff.ff.ff.ff.ff or 255.255.255.255
broadcast
200
*Protocol(s) used to access websites, port 80 or 443
HTTP (Hypertext Transfer Protocol) or HTTPS (Hypertext Transfer Protocol Secure)
200
*A cyber attack where you send an email to try and trick someone
Phishing
200
command to enter privilege exec mode
enable
400
*The physical address burned into your computer
MAC address
400
A packet or frame that goes to a specific group of clients
Multicast
400
*method used to create a connection between a host/client and server
three-way handshake
400
*20 characters in length
must have upper case, lower case and special character
expiration date
Password complexity
400
command to enter global configuration mode
config terminal
600
*The table on a switch that ties IP addresses to MAC addresses
ARP table
600
Class A - 1.0.0.0 to 127.0.0.0
Class B - 128.0.0.0 to 191.255.0.0
Class C - 192.0.0.0 to 223.255.255.0
Class D - 224.0.0.0 to 239.255.255.255
Class E - 240.0.0.0 to 255.255.255.255
5 categorized classes of IP address
600
*communications protocol that is low-latency and loss-tolerating
UDP User Datagram Protocol
600
A device used to protect your network from external threats
Firewall
600
command to show your SAVED configuration
show startup-configuration
800
Where is the CRC error check for a frame located?
Trailer
800
The address where all of your traffic will go automatically
Default gateway
800
*communications protocol that has error check and uses three-way handshake
TCP Transmission Control Protocol
800
*monitors and detects to behavior across a network
IDS (Intrusion Detection System)
800
command to show your MAC address
show interface
1000
The PDU used in layer 2
Frame
1000
The address that identifies the size of the network (number of IP addresses)
Subnet mask
1000
protocol used for the internet to relay datagrams across network boundaries
IP (Internet Protocol)
1000
*monitors, detects and responds to behavior across a network
IPS (Intrusion Prevention System)
1000
command to show ALL of your interfaces status
show ip interface brief or show ip interface