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Tutorials for Windows Server, Azure, PowerShell, Networking and Security.
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lenherr.ai
Tutorials for Windows Server, Azure, PowerShell, Networking and Security.
Navigation Menu
Search for...
Navigation Menu
About me
Blog
CCNA Study Hub
Topic tree
CCNA Study Hub
Networking – General questions
LAN vs. WAN
Staging the network equipment
Client & Servers
Router & Firewall
Switching & Wireless
Determine Speed with Bits and Bytes
Understanding MAC Addresses and Frames
Creating a network diagram
Network Design Model – Three-tiered architecture
Cisco IOS
Cable types
Cisco Packet Tracer
How do switches do what they do?
How to track down a device in a network
Why do we need ip addresses?
Review, Why Routers Exist
Defining Networks with Subnet Masks
Configuring Switch Interfaces
Configuring Router Interfaces
NAT – network address translation
What is Subnetting?
Re-addressing Castle Rysen Coffee
Why VLANs Matter More Than People Realize
Spanning-tree protocol (STP)
The Place of PortFast and BPDU Guard
How EtherChannel Increases Bandwidth
Advantages of Using Routing Protocols
When to Use First Hop Redundancy Protocols (FHRPs)
IPv6, the someday protocol
ACL – access lists
Understanding Vulnerabilities, Exploits, and Threats
Configuring Switch Port Security
Why should I care about CDP and LLDP?
Network services
SNMP, Your Network’s Sensor System
Understanding and Configuring Syslog
Why Quality of Service Matters More Than You Think
Understanding How Wireless Works
Network automation
