CCNA - Tamil

Explore common network interconnecting devices, including hubs, switches, bridges, routers, and gateways, and how they form an internetwork backbone, manage data with MAC address tables, and address security considerations.

Explore network topologies such as hub-and-spoke, star, mesh, and hybrid, and evaluate coaxial, fiber, and ethernet cabling in corporate network design.

Explore how the OSI and TCP/IP layers organize network communication, covering physical addressing, data encapsulation, network and transport layers, and user sessions across devices.

Explore how IP addressing works across networks, including IPv4 vs IPv6, private and public ranges, subnet masks, and basic routing concepts like unicast, multicast, and NAT.

Learn IP addressing basics, including Class A and Class B subnetting, default and custom subnet masks, slash notation; distinguish private and public IP addresses and understand subnetting to improve efficiency.

Master ip subnetting fundamentals through practical subnet calculations, learning to determine subnet counts, usable hosts, and broadcast addresses using real-world ipv4 examples.

IP subnetting concepts for Class B networks, including borrowing host bits, subnet masks, IP ranges, usable addresses, and broadcast addresses, with practical subnet calculations.

Master IP subnetting fundamentals, contrast classful and classless addressing, and learn to calculate subnet masks, networks, and hosts with practical tools and VLSM concepts.

Learn how routers route packets using IP addresses and routing tables to reach destination networks, with interface types, redundancy, and vendor examples.

Explore the fundamentals of router setup and administration, including configuring hostname, IP address, and interfaces (such as e0), navigating privilege and global configuration modes, and performing basic maintenance and diagnostics.

Configure a router with basic parameters by setting hostname, assigning IP addresses to interfaces, enabling privileged mode, applying banners, and using copy run to manage configuration.

Configure basic router parameters and verify interface status in a hands-on lab session. Learn to manage startup configurations, IP addressing, and both physical and logical layer settings through command-line tools.

Explore how Cisco Discovery Protocol enables link-layer device discovery, highlights nonproprietary LLDP, and compares LDP while guiding interface enablement in multi-vendor networks.

Learn to secure routers by enforcing strong password policies, configuring enable, enable secret, console, and telnet passwords, and encrypting passwords to prevent unauthorized access.

Learn how to secure routers by configuring passwords and encryption, compare enable password with enable secret, and apply practical password policies to avoid plain-text exposure.

Explore the booting sequence from bootloader to operating system initialization, and how ROM, flash memory, and startup configuration govern bootstrap behavior.

Understand how network address translation converts private IP addresses to public IP addresses, enabling internet access, and how port address translation multiplexes multiple connections while conserving addresses.

Understand how dynamic host configuration protocol assigns IP addresses and manages scopes, and how domain name system resolves hostnames, configures DNS servers, and supports gateway settings.

Configure the network time protocol to synchronize clocks across devices and enable reliable authentication and logging, while configuring snmp with mib, agents, and v3 authentication and encryption for secure monitoring.

Configure syslog and ssh services to centralize logs on the Just Log Server, manage log levels and timestamps with sequence numbers, and secure logging with encryption and access controls.

Configure backup and restore using tftp to ensure reliable data transfer and verify backups across routers, switches, and servers.

Master ip routing concepts by comparing static and dynamic routing, default routes, and routing protocols. Learn how next-hop, exit interface, and administrative distance shape the best path to remote networks.

Learn how to configure static and default IP routing, setting interfaces with IP addresses, understanding classless masks, and transitioning from dynamic to static routing in practical lab scenarios.

Understand how rip, a dynamic distance-vector interior gateway protocol, shares routing information, updates routing tables automatically, and contrasts with static routes and other interior and exterior gateway protocols.

Master configuring the RIP protocol through a networking lab, setting up IP addresses and gateways, building routes, and verifying routing table communication with remote networks.

Explore how a hybrid distance-vector routing protocol manages dynamic routing, administrative distance, and incremental updates to maintain accurate routing tables. Examine neighbor discovery and route advertisements within an autonomous system.

Configure eigrp on Cisco routers using the dual algorithm, establish neighbor relationships, and manage routing updates across head office and branch office networks.

Understand the OSPF protocol's dynamic routing, including hello packets, automatic updates, areas and autonomous systems, and how cost metrics drive fast convergence across multi-vendor networks.

Learn to configure the OSPF protocol, set up areas and area numbers, and apply wildcard masks, subnet masks, and access control lists for precise routing.

Explore layer 2 switching fundamentals, including learning and forwarding decisions based on MAC addresses, frame handling, and addressing to ensure efficient, resilient network interconnections.

Configure a layer 2 switch by setting the hostname and enable secret, securing console and telnet access, and configuring interfaces with IP addressing and the default VLAN 1 on ports.

Learn to secure switch ports by configuring port security, binding MAC addresses, enforcing authentication, and handling violations with port shutdown or restriction to protect the network from unauthorized access.

Understand the spanning tree protocol (STP) and how it prevents loops by blocking redundant links between switches. See how Mac address learning and convergence sustain layer 2 connectivity.

Learn to implement VLAN as a logical grouping that isolates users and resources, creating separate broadcast domains and enhancing security with access controls and frame tagging.

Learn to configure virtual local area networks on switches, create and manage VLANs, set up trunk links, choose encapsulation, and apply dynamic trunking protocol for inter-switch connectivity.

Configure inbound and outbound ACLs to restrict traffic using standard and extended rules, wildcard masks, and port-based permissions.

Explore core security concepts, including external and internal threats, denial-of-service and eavesdropping attacks. Learn about access control models such as RBAC and context-based controls, and strengthen monitoring and audit trails.

Explore password attacks, brute force and dictionary attacks, and strengthen defenses with password policies, multifactor authentication, user awareness training, and physical and access controls in layered security.

Learn password policy management essentials, including enforcing minimum length and complexity, configuring expiration and history, and handling secure password resets via the service desk.

Master password policy management for secure access across domain controllers and local systems. Cover certificate-based authentication, PKI, Kerberos tickets, MFA, and biometrics as robust alternatives to simple passwords.

Secure network access with aaa using radius, balancing authentication, authorization, and accounting and local credentials. Configure radius settings, ports, and firewall rules, enforce strong passwords, and plan redundancy.

Explore securing network access with aaa by implementing authentication, authorization, and accounting on Cisco and Juniper devices, using username and password logins and group authentication settings.

Secure network access using aaa—authentication, authorization, and accounting—by hardening admin accounts, enforcing strong password standards, addressing default usernames and passwords, disabling or deleting inactive or anonymous accounts, and monitoring activity.