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What will I learn?

This online course describes the operation of fixed line and wireless computer networks that employ the Ethernet suite of protocols. The course describes network address schemes, protocols, functional elements and security methods.
This PTT online course is aimed at those responsible for the design, installation and maintenance of Ethernet local area networks.

This course builds on the introductory course “Ethernet fundamentals” to describe in detail the operation and security aspects of both fixed line and wireless local area networks.
The course begins by describing the problems associated with network loops and explains the operation of protocols that allow Ethernet switches to avoid such loops. The relative benefits of routing and switching and the roles of translating bridges, routers and switches are compared. The role and operation of ARP, NAT and DHCP protocols in address translation and allocation are discussed. Security in a LAN is discussed with reference to firewalls, proxy servers and a DMZ. The operation and topology of wireless networks is discussed with reference to the role of access points and a wireless controller. Finally, the security aspects of a WiFi system are discussed.

This course includes online assessments. A certificate of completion is awarded to successful participants.

What do I need to know?

A basic understanding of the fundamentals of Ethernet is assumed. It is recommended that the PTT online course "Ethernet fundamentals" is studied as preparation for this course.

Course info


Course Provider Diploma/Certificate/Award (this must include an assessed element)

Study Hours

Variable - to suit the learner

Study mode




Total time for completion

12 months

More info on price

£138 per year. Single user annual licence

Who runs this course?



PTT – Providers of telecommunications training – is a specialist distance learning provider that focusses on telecommunications and Information communications technology (ICT). PTT’s extensive catalogue of online courses offer a valuable training and information resource for those joining the telecoms and ICT sectors as well as managers, technicians and engineers who need to keep up to date with the latest techniques and systems. Apart from standalone courses, PTT also offers online study programmes that reward successful participants with a certificate. PTT courses and study programmes are used throughout the world by major telecommunications and ICT organisations to train their staff as well as individuals wanting to

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