Cisco CCNA

What is networking

General and physical network components

Network types/ models and topologies

Network characteristics

Explanation of network stacks (OSI and TCP/IP)

Explanation of network protocols

Explain purpose of Application layer (layer 5) and well-known application layer protocols

Explain purpose of Transport layer (layer 4)

TCP and UDP functions and differences

Role of port numbers at Layer 4

“netstat” and “telnet” utilities

Explain purpose of Network layer (layer 3)

IP packet and IP classes

IPv6 address format

Private and public IP addresses

Broadcast packets and broadcast domain

Explanation of network mask

ARP protocol overview

IPv6 neighbor discovery

ICMP messages

Ping and Traceroute connectivity test commands

Explain purpose of the data link (layer 2) layer

Data link frame explanation

Ethernet MAC address

Switch forwarding methods

Explain purpose of the physical layer (layer 1)

Standards and components

Copper and fiber optic cabling

Binary and hexadecimal number system

Network ID, broadcast IP and valid range

Purpose of subnetting

Finding number of hosts in subnetwork

Finding number of new subnets after subnetting

Finding valid range of the subnetwork

Finding network ID, broadcast ID, first and last valid IP of each new subnetwork

Variable length subnet mask (VLSM)

IPv4 address planning

IPv6 address types

IPv6 address representation

Global Unicast and Link Local addresses

Dynamic addressing for IPv6

Security threats and vulnerabilities

CIA – confidentiality, integrity and availability

Network attack types

Device security and network attack mitigations

Port-security implementation on Cisco switches

VLAN attack and mitigation

DHCP attack review

DHCP Snooping configuration

ARP inspection on Cisco switches

PortFast and BPDUGuard configuration

Network attack types

Network attack tools

IP vulnerabilities and attacks

Network security best practices

Router and router-components

Cisco Operating Systems

How to connect to Cisco CLI

CLI modes

Basic and fundamental commands

Telnet and SSH configuration

Switch and switch-components

MAC address table

Address Learning process

Flooding and flooding process

Forwarding process

Collision and broadcast domains

Purpose and benefits of the VLANs

Normal and extended range VLANs

VLAN configuration

Access and trunk link configuration

Dynamic Trunking Protocol (DTP)

Native, data and voice VLAN

Inter-VLAN routing operation

Router-on-a-Stick Inter-vlan routing

Router subinterfaces

Inter-vlan routing with L3 switch (multilayer switch)

Switch Virtual Interface (SVI)

Purpose of Spanning Tree Protocol

BPDU messages between STP running switches

Spanning tree algorithm explanation

STP port roles and states

Rapid STP protocol concepts

Portfast and bpduguard feature

Etherchannel operation

Configure etherchannel

Verify and troubleshoot etherchannel

Link aggregation (etherchannel) and STP

L2 and L3 etherchannel

Etherchannel protocols (LACP and PAgP)

DHCPv4 concepts

DHCPv4 configuration

DHCPv6 operation steps

Stateless and stateful DHCPv6 operation

DHCPv6 configuration

FHRP protocol types

HSRP protocol overview

HSRP configuration and troubleshooting

Wireless topology modes

RF overview and Wireless bands/ channels

Wireless standards

Wireless Access Points and Controllers

Different Wireless Deployments

WLAN security and threats

WLAN configuration in Cisco Wireless Controller

General routing process

Host - end device routing process

IP Routing table

Static and dynamic routing

Router’s forwarding decision (longest match, administrative distance, metric)

Static routing (default, floating) configuration

IPv6 routing in Cisco routers

Troubleshooting IPv4 static and default routes

OSPF concepts and overview

OSPF neighborship and neighbor states

OSPF DR/BDR election

OSPF route calculation and OSPF metric (cost)

Point-to-point and multiaccess OSPF networks

Single Area OSPF configuration

OSPF Router-ID

OSPF default route propagation

Purpose of ACL

How ACL is applied for traffic filtering

ACL types (standard, extended, named and numbered)

Standard and extended ACL configuration

Editing existing ACLs

How ACL is applied for VTY line security

NAT concept and terms

Static NAT (one-to-one)

Dynamic NAT (many-to-many)

PAT (many-to-one)

NAT64

WAN Topologies

WAN connectivity types (MPLS, VPN)

Site-to-site and remote-access VPNs

IPSec VPN concepts

Confidentiality, integrity, authentication

Explanation of bandwidth, delay, jitter, loss

Traffic classification and marking

Queueing

Congestion and congestion avoidance tools

Shaping and policing

CDP and LLDP protocols

NTP protocol

SNMP protocol

Syslog protocol

IOS image management

Router boot process

Configuration-register value in Cisco IOS

Password recovery procedure

Cloud computing services and models

Server virtualization and networking in virtual environment

Hypervisors types

Cloud computing and networking in cloud environment

Controllers and Software Defined Networks (SDN) architecture

Automation impact in networking

REST API

Data formats (JSON, YAML, XML)

Automation tools (ansible, puppet, chef)