Infrastructure Flashcards
(30 cards)
Checking Network Connectivity: Windows
- Click on WIFI icon in taskbar
- Select desired SSID
- Enter WIFI password
- Click Connect
Ping<Ipaddress> = Check Connectivity
Ipconfig = View network settings, IP, gateway
Tracert<domain>= Trace route to destination
Netstat= View Active Connections</domain></Ipaddress>
Checking Network Connectivity: Linux
- Use network manager or use command nmcli dev wifi connect <ssid> password <password>
ping<Ipaddress> (basic connectivity check)
ifcofig or ipa (to check network/IP)
Traceroute<domain> (Tracing the route)
Netstat (View active connections)</domain></Ipaddress></password></ssid>
Checking Network Connectivity: MAC OS
- Click WIFI icon in menu bar
- Select SID and enter password
Ping<Ipaddress>
Ifconfig Check network interfaces
Netstat: View active connections
Traceroute<Domain> to trace route</Domain></Ipaddress>
Check Network Connectivity: Android
- Access quick settings
- Tap wifi, enter ssid and password
Ping <IP>
Ip addr show (To view IP)
Netstat (Active connections)</IP>
Check Network Connectivity: Apple IOS
- Open settings
- Choose SSID and put password
-Use pingtools or network analyzer to test network connectivity
Link Light Green (Solid)
Status: On
A valid link is established, the port is connected and active
Link Light Green (Blinking)
Status: Blinking
Traffic is passing through the port, activity is present
Link Light Amber (Solid)
Status: On
The port has detected a problem or is disabled by an admin or error
Link Light Amber (Blinking)
Status: Blinking
The port is experiencing errors or is blocked
Link Light Off
Not link, port is not connected, disable, or no power to the device
Patch Cables
Used to connect devices within a local area network. Typically short ethernet cables with RJ-45 connectors on both ends.
Used to connect ethernet ports on computers, servers, switches, and routers
Switches and Routers
Switches: Used to create local networks by connecting multiple devices together
Router: Connect different networks together
Can connect to each other using patch cables.
Small Topologies
In small network topologies, devices are typically connected in a star or tree-like configuration. Each device connects directly to switch or router
Rack Layout
In larger networks setups, devices may be organized in server racks or cabinets
Console Port
The console port is used for local management and configuration of network devices
Requires RS-232 serial connection and console cable to connect
Serial Port
Used for serial communication/ Serial ports can be used for connecting external modems or console servers
Fiber Port
Fiber optic ports used for connecting fiber optic cables. Ports are designed to transmit and recieve data using light signals. Used for highspeed and long distance network connections
Ethernet Ports
Most common ports. Connects devices using ethernet cables, which typically have RJ-45 connectors. Supports different speeds 10/100/1000 mbps
SFP
Small Form Factor Pluggable Ports: Found on modular ports on some network devices like switches. They accepts sfp transcievers, which are swappable modules that allow for flexible connectivity options
USB Port
Universal serial bus port: Used for various purposes such as connecting external storage devices.
POE
Power over ethernet ports allow for both data and power transmission over a single ethernet cable. Connects poe enabled devices like IP phones
Default Gateway
A router or networking device that serves as an entry and exit point for network traffic between a local net and other networks such as internet
Layer 2 switches
Operates on layer 2 (Data link layer) of osi model. Uses mac addresses to forward data within local network
Layer 3 Switches
Operates at layer 2 and 3. Unlike layer 2 switch is can make routing decisions based on IP allowing it to reach other networks
