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Computer Networking City Colleges’ Professional Diploma

  • “A good knowledge of networking will be a great stepping stone to having an exciting career in Networking.”
  • Delivered Live Online & On Demand
  • Choose to study at your own pace or with our timetabled classes
  • Flexible payment options
  • Starts May 2024

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Price from €895
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Live Online

Live online training with real-time instructor-student interaction.
Price from €1095
  • Live & fully online
  • Archived for review
  • 10 Weeks, 1 evening per week
  • Starts May 2024
  • 6.30 to 9.30pm
Pay in full & get €100 off listed price

On Demand

A flexible online approach developed to allow you to learn at your own pace.
Price from €895
  • Fully online
  • Pre Recorded
  • Start Anytime
  • Suit your own Schedule
  • Access for 10 weeks
  • 12 -13 weeks to send in the assignment

You will get an extensive overview of all the key components of a computer network. This Diploma course will teach you the skills needed to support Network devices in a modern IT environment and enable you to study other fields such as Cybersecurity.

Why Networking?

  • Average Network Engineer salary is €67k
  • There is currently an ICT skills shortage, not only in Ireland but across Europe,
  • The network professional will always be in high demand

Our daily lives rely increasingly on connectivity, we live in the world of The Internet of Things. It is vital that we know how to use this technology in a secure manner. We need to understand how this technology works and be able to identify the potential threats involved when we use it. Furthermore, there are more and more exciting careers available in the Networking world. Why not pursue a career in the exciting and evolving field of Networking?

This course will take the student through every step taken in order to configure and secure the typical devices used in the process. On completion of this course the student will have sufficient knowledge and skills to be able to embark on a career in Networking.

*This module is also a module on the level 7 Cybersecurity course offered by City Colleges.

In this course we will cover:

  • An Introduction to Networking
  • OSI Model and the TCP/IP protocol suite
  • Analysis of Network Protocols and their roles – TCP/IP, ARP, DHCP, DNS, NAT
  • Use of Wireshark software in analysing network traffic
  • Network Devices and their configuration
  • Securing network devices.
  • Network Security Infrastructure – IPS, IDS, Firewalls, SNMP
  • Types of Attackers and their tools
  • Wireless devices and their security
  • Security Technologies and Protocols – NTP, Syslog, DNS, HTTPS
  • Encryption using symmetric and asymmetric keys
  • Hash functions and Digital signatures
  • Building and securing a small network

A pass grade on both the final lab work and theory assessments will be required before awarding the Diploma.

Having completed this course, the student will be able to configure and secure the key components of a modern network, including PCs, routers, and switches. The student will be able to identify the potential threats posed when accessing and using Information Technology Systems.


John Sexton

John Sexton is a Chartered Engineer Electronic Engineering. He has been a Cisco CCNA instructor for 15 years. He holds a Master’s degree in Engineering from DCU, obtained in 1998.

John originally worked in the Telecoms sector before moving into Network Engineering in the nineties.

In 1998, he joined the lecturing staff in the Institute of Technology Tallaght, now part of the Technological University of Dublin. He lectured in Network Engineering for 18 years. In this time, he designed and delivered Networking modules at NFQ levels 6, 7 and 8. He has also delivered the CCNA Routing and Switching course for over 10 years.

He is currently a visiting lecturer for the Université de Toulouse II Jean Jaurès.

He has acquired a lot of experience teaching groups of varying levels of education.

Course Award

A City College’s Professional Diploma Course is a focused, practical programme designed and delivered by an industry practitioner, that consolidates, upskills or reskills learners in a professional area. They are stand-alone qualifications that indicate that you have been trained in a particular area or specific subject matter.

City College Diplomas are suitable for career minded learners wishing to advance their professional skills and prospects. They are widely accepted by employers and many students are sponsored to study here by their organisation.

Corporate Training

In addition to our scheduled Professional Diploma courses, City Colleges can provide bespoke training over 3 – 4 days, please contact for further details.

Learning Outcomes

Having completed this course, the student will be able to configure and secure the key components of a modern network, including PCs, routers, and switches. The student will be able to identify the potential threats posed when accessing and using Information Technology Systems.

Related Courses

Diploma in Cybersecurity Introduction

Diploma in Data Protection

Further Information

Please call the College on +353 1 416 0034 or email

Why City Colleges?

Study options that Suit your Schedule

Study where you want when you want. On Campus, Live Online, and On Demand.

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World Class Teaching

City Colleges Lecturers are industry leaders in their chosen fields

Our commitment to student experience

Our Programme Teams engage, support, and guide our students throughout their programme to ensure that their learning experience is a positive one and prepares them to use their new skills in the workplace.

Cutting Edge Programme Content

Our students enjoy some of the most contemporary and industry-relevant course content, developed by our industry-based practitioners to close skills gaps in the global workforce

Premium courses at affordable prices

City Colleges is committed to ensuring that our education and training programmes are accessible and affordable.