Cisco – CCNA Course - IT Centar
Networks & Cloud

Cisco – CCNA Course

CCNA is a highly important certification for every network professional on the path to a successful career. This training is designed for network engineers who configure and maintain CISCO networks on both the client and provider sides, as well as for managers and sales professionals who need practical knowledge of modern networks.

Control the digital pulse of the world

Networks are the lifeblood of every digital system. From the phone in your pocket to Netflix and global banking, everything runs thanks to complex networks. The CCNA certification puts you in a position not just to use these systems, but to design and manage them.

You will learn how to configure and maintain Cisco networks, the industry standard used by companies around the world. You will understand TCP/IP networks, troubleshoot connectivity issues, work with routers and switches, back up configurations, and manage network equipment efficiently.

For you, that can mean different things: a direct path to the job you want, a secure transition into a stable and promising industry, or greater control and optimization of your business.

What will you learn in the CCNA course?

1.0 Network fundamentals

1.0 Network fundamentals

1.1 Role and function of network components

  • Routers
  • L2 and L3 switches
  • Firewall and next-generation IPS
  • Access points (AP)
  • Controllers (Cisco DNA and WLC)
  • Endpoints
  • Servers

1.2 Characteristics of network topology

  • 2 tier
  • 3 tier
  • Spine-leaf
  • WAN
  • Small office/home office (SOHO)
  • On-premises and cloud

1.3 Physical interfaces and cables

  • Single-mode fiber, multimode fiber, coaxial cables, twisted pair cables
  • Connections (Ethernet, Point-to-Point)
  • Power over Ethernet (PoE) concept

1.4 Identifying interface and cable issues (collisions, errors, duplex mismatch and/or speed mismatch)

1.5 TCP/UDP protocol comparison

1.6 IPv4 addressing and subnetting, summarization

1.7 Need for IPv4 addresses

1.8 OSI model / TCP/IP model

1.9 Types of IPv6 addresses

  • Global unicast
  • Unique local
  • Link local
  • Anycast
  • Multicast
  • Modified EUI 64

1.10 Wireless principles

  • Non-overlapping Wi-Fi channels
  • SSID
  • RF
  • Encryption

1.11 Fundamentals of virtualization (virtual machines)

1.12 Basic switch concepts

  • Learning and aging MAC addresses
  • Frame forwarding
  • Frame flooding
  • MAC address table (CAM)

1.13 Introduction to Cisco routers and switches

  • Modules
  • Memory components on Cisco devices
  • Cisco operating system (Cisco IOS)
  • Cisco router models and their characteristics
  • Cisco switch models and their characteristics

1.14 Initial Cisco IOS operations

  • Router/switch startup procedures
  • IOS navigation

1.15 Basic Cisco configuration

  • Global configuration mode on Cisco devices
  • Line configuration mode
  • Interface configuration mode
  • Switch commands
  • Using the „show“ command to display configuration information
  • Troubleshooting commands on Cisco devices
  • Working with a TFTP server
  • Accessing Cisco devices using Telnet

2.0 Network access

2.1 VLAN configuration

  • Introduction to the VLAN concept
  • VLAN configuration
  • VLAN Trunking Protocol
  • Troubleshooting communication between VLANs
  • VTP modes
  • Configuring VTP
  • Inter-VLAN routing

2.2 Cisco Discovery Protocol (CDP) and Link Layer Discovery Protocol (LLDP)

2.3 EtherChannel (LACP, PAgP)

2.4 Spanning Tree Protocol (STP), RSTP, PVST+, Rapid PVST+, MSTP

  • Root port, root bridge (primary/secondary)
  • Port states (forwarding/blocking)
  • PortFast benefits
  • BPDU guard, Root guard

2.5 Cisco wireless architecture and AP modes

2.6 Connecting WLAN components (AP, VLC, access/trunk ports, and LAG)

2.7 Managing and accessing AP and Wireless LAN Controllers (WLC) (Telnet, SSH, HTTP, HTTPS, console, and TACACS+/RADIUS)

2.8 Configuring wireless devices using the GUI, creating WLANs, security settings, QoS profiles, and advanced WLAN settings

3.0 IP connectivity

3.1 Routing table components

  • Prefix
  • Network mask
  • Next hop
  • Administrative distance
  • Metric
  • Gateway of last resort

3.2 Logic of information forwarding on a router

  • Longest prefix match
  • Administrative distance
  • Metric value

3.3 IPv4 and IPv6 static routing

  • Default route
  • Network route
  • Host route
  • Floating route

3.4 Distance vector routing protocols

  • Concept of distance vector routing protocols
  • Routing loops
  • Techniques used to solve loop problems
  • RIPv1 and RIPv2 routing protocols – IPv4
  • EIGRP routing protocol

3.5 Single-area, multi-area OSPFv2 – configuration

  • Concept of link-state routing protocols
  • Establishing neighbor relationships
  • Point-to-Point environment
  • Broadcast (DR/BDR selection)
  • Router ID
  • Metric (cost)

3.6 First Hop Redundancy Protocol (HSRP)

4.0 IP services

  • NAT concept
  • Static NAT, Dynamic NAT, and PAT
  • NAT terminology
  • NAT configuration
  • NTP, SNMP, Syslog
  • DHCP server, DHCP client, DHCP Relay
  • DNS
  • Configuring network devices for remote access using SSH, Telnet, and direct console access
  • TFTP, FTP

5.0 Security fundamentals

  • Configuring device access control using local passwords
  • Security password policies
  • VPN Site-to-Site
  • Configuring access lists (ACLs)
  • DHCP Snooping, dynamic ARP inspection, port security
  • The concept of authentication, authorization, and accounting (AAA)
  • Wireless security protocols (WPA, WPA2, and WPA3)
  • Configuring WLAN using WPA2 PSK through the GUI

6.0 Automation and programmability

  • The impact of automation on network management
  • Comparison of traditional networks with controller-based networks
  • Controller-based architecture (overlay, underlay, fabric)
  • Control plane, Data plane
  • North-bound and South-bound API
  • Comparison of traditional campus device management with Cisco DNA device management

6.1 Features of REST-based APIs (CRUD, HTTP verbs, and data encoding)

6.2 Puppet, Chef, Ansible

6.3 JSON-encoded data

20 years of experience shaping the future of IT. Over 1,000 satisfied participants.

  • 20 Years of Experience: Decades of dedication to education have given us the knowledge and experience to guide you on the right path to success in IT.
  • Instructors = Active Experts: Learn from professionals who solve real-world network challenges in large systems every day. They are your mentors, ready to share practical know-how and answer all your questions.
  • Live Online Classes (interaction first): No matter where you are, our classes are live, interactive, and dynamic. Ask questions, discuss, and solve problems in real time—you’ll feel as if you’re in the classroom.
  • Globally Recognized Certificate: The CCNA certificate opens doors to jobs anywhere in the world. Your knowledge will be valued.

Frequently asked questions:

Do I need prior IT knowledge to enroll in the CCNA course?

Although it is recommended to be familiar with operating system maintenance and basic network technology concepts, the course is designed to guide you from absolute zero to the level of a certified network engineer. It doesn’t matter whether you’re just entering the IT world, changing careers, or want to improve your business—we cover all the essentials. All you need is the willingness to learn, and we’ll guide you through every step!

How are classes conducted, and can I attend the course if I'm not in Niš?

Classes are held live online through specialized platforms (for example, Zoom). That means you can attend from the comfort of your home, whether you are in Serbia or in one of the neighboring countries. We focus on interactive sessions with the instructor, where you can ask questions, discuss topics, and work through exercises in real time, just as if you were there in person. There are no recorded lessons here—you are part of a dynamic group!

Do I receive a certificate after completing the course, and is it recognized?

To earn the CCNA certification, you need to pass:

  • 200-301 – Cisco Certified Network Associate, which you can take at our test center in Niš.

This certification is recognized in the industry and serves as strong proof of your expertise when applying for jobs or working with clients. CCNA is a globally recognized certification and opens doors in the IT world.

What are the employment prospects after the CCNA course, and does IT Centar Edu help with finding a job?

Demand for network engineers with CCNA certification is consistently high! Our course focuses on practical skills and building a portfolio, making you highly competitive in the job market. While we do not guarantee employment, we actively advise and support participants in creating a professional CV and portfolio.

What if I don't like the course or can't keep up with it?

We believe in the quality of our program and the dedication of our instructors. If you run into difficulties, our instructors and support team are available to provide additional explanations and assistance. Your success is our priority! Moreover, if you want to review the material or were unable to attend all classes, you can take the same course again for free with the next group of participants. We are with you until you succeed!

Course Materials

All materials required to follow the online course are provided in electronic format.

Exams & Certificates

Upon completing the course, participants receive an IT Centar certificate confirming successful completion of the training.

Prerequisites

Basic computer skills are required to attend the course and obtain the certificate. Knowledge of English is recommended.

We guarantee that you’ll gain the essential skills you need. If you still feel unsure after completing the course, we’ll give you another opportunity — you can attend the course again free of charge during the next enrollment period.

Upoznajte predavača
Dušan Petrović

Dušan Petrović

Specialist Structural Engineer in Electrical Engineering and Computing

System Administrator/DevOps

This training is led by Dušan Petrović, an expert who brings firsthand experience from the front lines of DevOps engineering into the classroom.

His approach is defined by exceptional attention to detail and a deep understanding of each participant’s specific needs, ensuring that no one is left without an answer to complex technical questions.

Student Testimonials

What do participants who have successfully completed the training say?

Za ovaj kurs imam samo pohvale, pratio sam predavanja mimo termina zbog obaveza koje sam imao. Od svih potencijalnih pitanja koja sam imao, ne postoji ono na koje predavač nije odgovorio.

A solid five out of five, with plenty of practical examples. We also covered a lot of topics not directly tied to CCNA, but important for the job and for working with networks.

Dušan je fantastičan predavač. Sviđa mi se što detaljno pokazuje, ponavlja, obrazlaže sve što je potrebno. Sve što smo radili objasnio je i pokazao na odličan način, čak i mnogo više od onoga što je planirano programom. Na tome sam mu mnogo zahvalan!

Prijava

Spreman/na za Cisco – CCNA Course?

Pošalji prijavu i naš tim će ti se javiti sa slobodnim terminima, formatom nastave i preporukom pripreme.

    Ili nas pozovi na 062 250 241