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Network Infrastructure and Administration

Information Technology and Digital Systems October 25, 2025
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Introduction

This course provides an in-depth exploration of modern network infrastructure, covering the design, implementation, and management of local and wide area networks. Participants will learn the core principles of networking, from the physical layer up through advanced routing and switching protocols. The curriculum emphasizes practical skills required to configure, maintain, and troubleshoot enterprise-level network services. This knowledge is crucial for anyone responsible for ensuring reliable and secure data communication within an organization.

Objectives

Upon completion of this course, participants will be able to:

  • Explain the function of network components and the OSI and TCP/IP models.
  • Implement and configure IP addressing schemes, including IPv4 and basic IPv6.
  • Configure and manage common network devices such as switches and routers.
  • Apply fundamental routing protocols (e.g., OSPF, EIGRP) in a simulated environment.
  • Understand and implement virtual LANs (VLANs) for network segmentation.
  • Perform basic network security configurations, including access control lists (ACLs).
  • Utilize monitoring and troubleshooting tools to diagnose network performance issues.
  • Set up and manage essential network services like DNS, DHCP, and NAT.

Target Audience

  • Aspiring Network Administrators and Engineers.
  • System Administrators seeking to deepen their networking knowledge.
  • IT support staff who frequently troubleshoot connectivity issues.
  • Cybersecurity analysts needing a strong network foundation.
  • Individuals preparing for vendor-specific networking certifications (e.g., Cisco CCNA).

Methodology

  • Extensive hands-on labs using network simulation tools (e.g., Packet Tracer).
  • Scenario-based practical exercises for configuring routers and switches.
  • Group activities focused on designing and segmenting a corporate network.
  • Case studies on diagnosing and resolving complex network outages.

Personal Impact

  • Master the essential skills required for a professional network administrator role.
  • Gain confidence in designing and implementing secure, scalable networks.
  • Improve problem-solving ability in high-pressure network troubleshooting situations.
  • Achieve a recognized level of expertise in a high-demand IT specialization.
  • Develop a deeper understanding of network security implications.

Organizational Impact

  • Reduced network downtime and improved organizational connectivity reliability.
  • More efficient and optimized use of network resources and bandwidth.
  • Enhanced security posture through proper network segmentation and access control.
  • Ability to scale the network infrastructure effectively to support business growth.
  • Compliance with industry standards through professionally managed infrastructure.

Course Outline

Unit 1: Network Models and Fundamentals

OSI and TCP/IP Models
  • Detailed breakdown of the seven layers of the OSI model.
  • Mapping the OSI model to the four-layer TCP/IP model.
  • Encapsulation and de-encapsulation processes.
  • Key protocols at each layer (e.g., ARP, TCP, UDP, HTTP).
Network Topologies and Devices
  • Common network topologies (Star, Mesh, Bus) and their use cases.
  • Function and placement of hubs, switches, and routers.
  • Cabling standards (UTP, Fiber) and Ethernet technologies.
  • Wireless networking standards (802.11) and access points.

Unit 2: IP Addressing and Subnetting

IPv4 Addressing
  • Classes of IP addresses and public vs. private ranges.
  • Detailed instruction on Classless Inter-Domain Routing (CIDR).
  • Practical subnetting calculation and VLSM (Variable Length Subnet Masking).
  • IP address management (IPAM) best practices.
Introduction to IPv6
  • IPv6 address structure and representation.
  • Types of IPv6 addresses (Unicast, Multicast, Anycast).
  • Transition mechanisms from IPv4 to IPv6.
  • Stateless Address Autoconfiguration (SLAAC) vs. DHCPv6.

Unit 3: Switching and VLANs

Switching Concepts
  • The function of MAC addresses and the MAC address table.
  • Spanning Tree Protocol (STP) and its role in loop prevention.
  • Link Aggregation Control Protocol (LACP) for bandwidth increase.
  • Switch security features (Port Security, DHCP snooping).
Virtual Local Area Networks (VLANs)
  • Creating, configuring, and verifying VLANs on switches.
  • Trunking protocols (802.1Q) and their configuration.
  • Inter-VLAN routing techniques and implementation.
  • Best practices for VLAN design and segmentation.

Unit 4: Routing and Wide Area Networks (WAN)

Routing Protocols
  • Static vs. Dynamic routing and their application.
  • Configuration and verification of OSPF (Open Shortest Path First).
  • Introduction to EIGRP (Enhanced Interior Gateway Routing Protocol).
  • Gateway Redundancy Protocols (HSRP, VRRP).
WAN Technologies
  • Introduction to MPLS, Metro Ethernet, and VPNs.
  • Configuration of Network Address Translation (NAT) and PAT.
  • DSL, Cable, and Fiber connections in a WAN context.
  • Considerations for BGP and Internet connectivity.

Unit 5: Network Services and Administration

Core Network Services
  • Installation and configuration of DHCP servers and relay agents.
  • Understanding the DNS resolution process and zone types.
  • Monitoring tools: SNMP, NetFlow, and Syslog.
  • Quality of Service (QoS) principles and implementation.
Security and Troubleshooting
  • Implementing Access Control Lists (ACLs) for traffic filtering.
  • Introduction to network firewalls and Intrusion Detection Systems (IDS).
  • The structured network troubleshooting methodology.
  • Using ping, traceroute, and protocol analyzers (e.g., Wireshark).

Ready to Learn More?

Have questions about this course? Get in touch with our training consultants.

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Upcoming Sessions

01 Dec

Washington DC

December 01, 2025 - December 05, 2025

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05 Jan

Bangkok

January 05, 2026 - January 09, 2026

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19 Jan

Munich

January 19, 2026 - January 23, 2026

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