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  • About Us
  • What is CCNA?
  • New CCNA exam - 200-301
  • Free Cisco CCNA Study Guide
  • Recommended CCNA Study Resources
  • What is a Network?
  • Local Area Network (LAN)
  • OSI & TCP/IP Models
  • TCP/IP Suite of Protocols
  • Encapsulation
  • Cisco IOS Overview
  • Ports on an IOS Device
  • Auxiliary Port on a Cisco Router
  • Cisco Console Rollover Cable
  • Get Help in IOS
  • IOS Command Modes
  • Run Privileged Commands Within Global Config Mode
  • Pipe Character in IOS
  • Running & Startup Configuration
  • Transport Layer Explanation – Layer 4 of the OSI Model
  • Ports Explained
  • TCP Explained
  • TCP Three-Way Handshake
  • UDP explained
  • IP Header
  • Unicast, Multicast, and Broadcast Addresses
  • Types of IP Addresses
  • What is Ipv4 Address and What is its Role in the Network?
  • Converting the IP Address - Decimal to Binary
  • Subnet Mask
  • Classes of IP Addresses
  • Subnetting Explained
  • CIDR (Classless Inter-Domain Routing)
  • Create Subnets
  • Understanding Variable Length Subnet Masks (VLSM)
  • Private IP Addresses Explained
  • Ethernet Explained
  • Ethernet Frame
  • MAC & IP Addresses
  • Types of Ethernet Cabling
  • IEEE Ethernet Standards
  • Types of Ethernet Cables – Straight-Through and Crossover
  • Cisco PoE Explained - What is Power over Ethernet?
  • Network Devices
  • Network Hubs Explained
  • Network Switch Explained
  • CSMA/CD
  • Collision & Broadcast Domain
  • How Switches Work
  • Layer 2 Switching
  • Network Router Explained
  • What Is Layer 3 Switch and How it Works in Our Network?
  • What is Domain Name System (DNS) and How Does it Work?
  • Map Hostnames to IP Addresses
  • Configure Cisco Device as DNS client
  • How to Configure a Cisco Router as a DNS Server?
  • no ip domain-lookup Command
  • ARP (Address Resolution Protocol) Explained
  • The ARP Table on a Cisco Router
  • IOS Basic Commands
  • Configure an IP Address on a Switch
  • Configure Descriptions
  • Interface Range Command
  • Power on a Cisco Device
  • Half Duplex and Full Duplex
  • Configure Speed and Duplex
  • Link Layer Discovery Protocol (LLDP)
  • Cisco Discovery Protocol (CDP) overview
  • show Command
  • show interfaces status Command
  • Interface Status Codes
  • show version Command
  • Types of Memory on a Cisco Device
  • IOS Boot Sequence
  • How to Reset a Cisco Router or Switch to Factory Default
  • IOS files
  • Backing up IOS Configuration
  • FTP & TFTP
  • Copy Files with FTP
  • How to Upgrade Cisco IOS
  • Cisco more Command
  • Erasing Configuration Files
  • Network Troubleshooting Methodology and Techniques
  • ICMP (Internet Control Message Protocol)
  • Ping Explained
  • Extended Ping Command
  • Traceroute Explained
  • traceroute Command
  • show processes Command
  • What is IP Routing?
  • Local Routes and How they Appear in the Routing Table
  • Connected, Static, & Dynamic Routes
  • Floating Static Route - Explanation and Configuration
  • Default Static Route
  • Create a Static Host Route
  • What is a Static Summary Route? Explained and Configured
  • Routing Protocols
  • Comparing Internal Routing Protocols (IGPs)
  • Administrative Distance & Metric
  • Equal Cost Multi-Path (ECMP) Explanation & Configuration
  • Understanding Loopback Interfaces and Loopback Addresses
  • passive-interface Command
  • RIP Overview
  • Advertise Default Routes Using RIP
  • Configuring RIPv2
  • EIGRP Overview
  • EIGRP Diffusing Update Algorithm (DUAL)
  • EIGRP Reliable Transport Protocol (RTP)
  • Wildcard Masks
  • Wildcard Mask in EIGRP
  • EIGRP Automatic & Manual Summarization
  • EIGRP Summary
  • OSPF Overview
  • Differences Between OSPF and EIGRP
  • Cisco Bandwidth Command vs Clock Rate and Speed Commands
  • OSPF Cost - OSPF Routing Protocol Metric Explained
  • OSPF Configuration
  • Designated & Backup Designated Router
  • OSPF Passive Interface - Configuration and Why it is Used
  • OSPF Default-Information Originate and the Default Route
  • OSPF Load Balancing - Explanation and Configuration
  • OSPF Summarization
  • Troubleshooting OSPF and OSPF Configuration Verification
  • OSPF Network Types - Point-to-Point and Broadcast
  • OSPF Summary
  • Cisco Three-Layer Hierarchical Model
  • Collapsed Core and Three-Tier Network Architectures
  • What is Spine and Leaf Network Architecture?
  • What is a VLAN?
  • Frame Tagging
  • Configuring VLANs
  • Access and Trunk Ports
  • Inter-Switch Link (ISL)
  • IEEE 802.1Q
  • Configuring Access & Trunk Ports
  • Configuring Voice VLANs
  • Configuring Allowed VLANs
  • Cisco Dynamic Trunking Protocol (DTP) Explained
  • What is VTP?
  • VTP Modes
  • VTP Configuration
  • Configure interVLAN Routing
  • Configure Cisco ROAS Router On A Stick
  • Cisco Layer 3 Switch InterVLAN Routing Configuration
  • DHCP & DNS
  • Configure Cisco Router as DHCP Server
  • DHCP Relay Agent
  • Configure Cisco Router as a DHCP Client
  • APIPA (Automatic Private IP Addressing)
  • What is Network Redundancy and What are its Benefits?
  • Cisco First Hop Redundancy Protocol (FHRP) Explained
  • Cisco Hot Standby Router Protocol (HSRP) Explained
  • Cisco Hot Standby Router Protocol (HSRP) Configuration
  • Cisco Hot Standby Router Protocol (HSRP) Preempt Command
  • What is STP?
  • Network Bridge Explained
  • How STP Works
  • Electing the Root Switch in STP
  • Spanning Tree Priority: Root Primary and Root Secondary
  • Selecting STP Root Port
  • Selecting STP Designated Port (DP)
  • Spanning Tree Modes: MSTP, PVST+, and RPVST+
  • What is RSTP?
  • How RSTP Works
  • Configuring RSTP
  • Cisco HSRP and Spanning Tree Alignment Configuration
  • Spanning Tree Portfast, BPDU Guard, Root Guard Configuration
  • What is EtherChannel and Why Do We Need It?
  • EtherChannel Port Aggregation Protocol (PAgP)
  • EtherChannel Link Aggregation Control Protocol (LACP)
  • Multichassis EtherChannel (MEC) and MEC Options
  • Cisco Layer 3 EtherChannel - Explanation and Configuration
  • What is DCHP Snooping? - Explanation and Configuration
  • Dynamic ARP Inspection (DAI) Explanation & Configuration
  • What is 802.1X Authentication and How it Works?
  • Port Security
  • Cisco Port Security Violation Modes Configuration
  • What are ACLs?
  • Types of ACLs
  • Configuring Standard ACLs
  • Configuring Extended ACLs
  • Configuring Named ACLs
  • What is NAT?
  • Static NAT
  • Dynamic NAT
  • Port Address Translation (PAT) Configuration
  • What is IPv6?
  • IPv6 Address Format
  • IPv6 Interface Identifier
  • Differences Between IPv4 and IPv6
  • Types of IPv6 Addresses
  • IPv6 Unicast Addresses
  • IPv6 Global Unicast Addresses
  • IPv6 Unique Local Addresses
  • IPv6 Link-Local Addresses
  • IPv6 Multicast Addresses
  • IPv6 Address Prefixes
  • How to Configure IPv6
  • IPv6 SLAAC - Stateless Address Autoconfiguration
  • IPv6 Routing - Static Routes Explained and Configured
  • IPv6 Default Static Route and Summary Route
  • IPv6 Routing Protocols
  • Neighbor Discovery Protocol - NDP Overview
  • Wide Area Network
  • Cisco VPN - What is VPN (Virtual Private Network)?
  • WAN Connection Types - Explanation and Examples
  • Leased Line Definition, Explanation, and Example
  • Multiprotocol Label Switching (MPLS) Explained & Configured
  • What is PPPoE? Point to Point Protocol over Ethernet
  • The Different Wide Area Network (WAN) Topologies
  • Cybersecurity Threats and Common Attacks Explained
  • The Different Types of Firewalls Explained
  • Firewalls, IDS, and IPS Explanation and Comparison
  • Cisco Cryptography: Symmetric vs Asymmetric Encryption
  • HTTP and HTTPS explained
  • Cyber Threats Attack Mitigation and Prevention
  • Telnet & SSH
  • Setting Up Telnet
  • Setting Up SSH
  • Cisco Console Port Security
  • exec-timeout Command
  • Encrypt Local Usernames and Passwords
  • Cisco Privilege Levels - Explanation and Configuration
  • What is AAA? Authentication, Authorization, & Accounting
  • Configuring AAA on Cisco Devices – RADIUS and TACACS+
  • Configuring a Cisco Banner: MOTD, Login, & Exec Banners
  • Configure Timezone and Daylight Saving Time (DST)
  • NTP (Network Time Protocol)
  • Configure NTP on a Cisco Router
  • Syslog Explained
  • Syslog Message Format
  • Cisco IOS Syslog Logging Locations
  • logging synchronous Command
  • debug Command
  • terminal monitor Command
  • SNMP (Simple Network Management Protocol)
  • SNMPv3 Overview and Configuration
  • Quality of Service (QoS) and its Effect on the Network
  • Quality of Service (QoS) Classification and Marking
  • Quality of Service (QoS) Queues and Queuing Explained
  • Quality of Service (QoS) Traffic Shaping and Policing
  • Quality of Service (QoS) Network Congestion Management
  • Cloud Computing - Definition, Characteristics, & Importance
  • What is Server Virtualization, its Importance, and Benefits?
  • Network Virtualization and Virtualizing Network Devices
  • Cloud Computing Service Models - IaaS, PaaS, SaaS
  • Cloud Deployment Models - Explanation and Comparison
  • The Different WAN to Cloud Connectivity Options
  • The Advantages and Disadvantages of Cloud Computing
  • What is Wireless Network and What are its Types?
  • Wireless Access Point Operation Explained
  • Autonomous AP Access Point Configuration
  • Lightweight Access Point (AP) Configuration
  • Cisco Wireless Architectures Overview and Examples
  • Cisco Wireless LAN Controller Deployment Models
  • 2.4 GHz vs 5 GHz WiFi Frequency Spectrum
  • Understanding WiFi Security - WEP, WPA, WPA2, and WPA3
  • What is Network Automation and Why We Need It?
  • Network Programmability - Git, GitHub, CI/CD, and Python
  • Data Serialization Formats - JSON, YAML, and XML
  • SOAP vs REST: Comparing the Web API Services
  • Model-Driven Programmability: NETCONF and RESTCONF
  • Configuration Management Tools - Ansible, Chef, & Puppet
  • Cisco SDN - Software Defined Networking Explained
  • Cisco DNA - Digital Network Architecture Overview
  • Cisco IBN - Intent-Based Networking Explained
  • Cisco SD-Access (Software-Defined Access) Overview
  • Cisco SD-WAN (Software-Defined WAN) Overview & Architecture
  • Click here for CCNP tutorials on study-ccnp.com

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