CCENT – Cisco Certified Entry Networking Technician (100-105 ICND1)

Overview

This section gives the information about The Cisco Certified Entry Networking Technician (CCENT) certification. It explores foundational networking topics required for anyone working with IPv4 and IPv6 networks. It covers configuring and maintaining Cisco routers and switches in small to medium sized networks. It also covers routing protocols, VLANs, device security and more.

The OSI Model

This section reviews the basic concepts of the 7 layer OSI networking model. It talks about the 7 layers and explains how they function in networking. It describe the process of encapsulation and decapsulation and explains about data at the Transport, Network, Data Link and Physical layers.

TCP/IP

This section reviews the TCP/IP protocol stack and its model. It explains difference between TCP and UDP connections. It also covers windowing and MTUs.

Network Topologies

This section gives the information about The Cisco Certified Entry Networking Technician (CCENT) certification. It explores foundational networking topics required for anyone working with IPv4 and IPv6 networks. It covers configuring and maintaining Cisco routers and switches in small to medium sized networks. It also covers routing protocols, VLANs, device security and more.

Understanding IPv4

This section describes IPv4 addressing. It introduce the concepts of an IP address and it’s purpose. It show the breakdown of the address into the network and host portions of the address to indicate how devices are recognized as being on the same network or different networks.

Understanding IPv6

This sections covers IPv6 concepts. It explains the fundamental improvements in IPv6 like IPSec, QoS and even other protocols that currently require an addition to IPv4.

Introduction to Cisco Hardware

This section maily focuses in on Routers and Switches and the Cisco ASA (Firewall Appliance).It also discusses some of the network modules, WICS, HWICS and EHWICS.

Introduction to the IOS CLI

This section explains command line interface (CLI) to the Cisco Internetwork Operating System (IOS). It introduces the interface and shows how to navigate through the commands.

Initial Device Configuration

This section shows how to get Cisco device ready for a production network. It shows basic configuration for access passwords and setting the clock on a device. It demonstrate how to setup a cisco device for management not only from the console but also for remote access as well.

LAN Switching

This section introduces LAN Switching. It discusses the basics of layer 2 switching concepts. It explains the basic differences between a hub (layer 1) and switch (layer 2). It also demonstrates how the switch builds mac address table and the shows commands that reveal that table.

VLANs

This section shows how to create and work with VLANs. It talks about how to segment a switch using VLANs. It demonstrate how to create VLANs and assign ports into VLANs. It also explains how to create data VLANs and voice VLANs on a switch.

Layer 2 Discovery Protocols

This section explores how to use Layer 2 discovery protocols. It explains CDP and LLDP protocols. It shows configuration and usage of both protocols. It also covers how to discover machines connected to Cisco switches by using the ARP and mac address table.

Port Security

This section introduces layer 2 security concepts. It talks about how to configure it. It covers the basics and configuration of port security. It shows how to put a limit on the number of mac addresses each port will allow to connect.

Routing Protocols

This section reviews the basic routing concepts. It discusses how a router builds its routing table through directly connected routes, static assignments and routing protocols. It explains Routing protocols and its advantages. It also describes the difference between Distance Vector and Link State Protocols.

Router on a Stick

This section explores basic routing between connected networks and interfaces on a router. It explains that routing requires moving traffic between 2 networks on different interfaces. It also shows that to route traffic to different networks residing off the same interfaces requires configuring sub interfaces and trunks. It also demonstrates how to configure the switch and the router to do the inter-VLAN routing.

Static Routes

This section shows how to manually configure routes that are not directly connected. It also shows configuration for how to prefer one static route over another by implementing a higher administrative distance.

Routing Information Protocol

This section introduces vector protocol of RIP (routing information protocol). It discusses metric of hop count and the pitfall of distance vector routing, routing loops. It also introduces max hop count, split horizon and poison reverse as technology that can prevent routing loops.

Dynamic Host Configuration Protocol

This section shows how to configure DHCP as a service running on the router. It discusses the DHCP process and demonstrate how to configure a DHCP server on the router along with options. It also shows how to configure a router interface to get an address from cisco dhcp server and how to setup options.

Network Time Protocol

This section shows how to configure a Cisco router as a NTP server and NTP client. It discusses the importance of NTP for networking devices. It covers the commands to configure a Cisco router as a NTP master and client. It also shows how to verify the configuration.

Access Control Lists

This section introduces Standard Access Control Lists (ACL). It covers it’s configuration and it’s usage. It emphasize on how to create standard numbered ACLs or named ACLs.

Network Address Translation

This section explains universal technology called Network Address Translation. This technology has help slow down the consumption of the IPv4 address space on the internet by translating one address into another ip address. It also covers and explains 3 methods: Static NAT, Dynamic NAT and Port Address Translation (PAT) also called NAT Overload.

Device Management

This section talks about the maintenance task that a Cisco Profession must understand and configure, specifically setting up a remote syslog server. This is essential to provide solid information for troubleshooting and maintaining multiple Cisco devices.

Device Security

This section shows the basic device security that every cisco technician should know how to configure: using passwords, limiting access to ssh and using access-list to control access to the router. It also talks about setting up username/password to provide authentication and password protection.

Device Maintenance

This section explores working with CiscoIOS. It shows hot to know about CiscoIOS updates and its process. It discusses not only updating the IOS to the router but also verifying the integrity of the file uploaded and setting the new IOS as the boot system .

Troubleshooting Tools

This section covers Cisco Troubleshooting Model that every CCENT candidate need to understand. It also show an additional methodology using the OSI model to help isolate and resolve networking issues. It also shows the use of traceroute and pings for troubleshooting connectivity issues.