To keep up-to-date experience I keep studying and doing exams.

Below you will find all the current certifications that i'm holding:

Bachelor of Information and Communication Technology

Cisco Certified System Instructor (CCSI) 32432
CompTIA Certified Technical Trainer CTT+

Microsoft MCP IP: 2539181

Exam	Description
	Microsoft MCSE 2003:
70-270	Installing, Configuring, and Administering Microsoft Windows XP Professional
70-299	Implementing and Administering Security in a Microsoft Windows Server 2003 Network
70-293	Planning and Maintaining a Microsoft Windows Server 2003 Network Infrastructure
70-294	Planning, Implementing, and Maintaining a Microsoft Windows Server 2003 Active Directory Infrastructure
70-298	Designing Security for a Microsoft Windows Server 2003 Network
70-290	Managing and Maintaining a Microsoft Windows Server 2003 Environment
70-291	Implementing, Managing, and Maintaining a Microsoft Windows Server 2003 Network Infrastructure
	Cisco CCNA/CCNP
642-901	Building Scalable Cisco Internetworks (BCSI)
642-821	Building Cisco Multilayer Switched Networks (BCMSN)
642-845	Optimizing Converged Cisco Networks (ONT)
642-825	Implementing Secure Converged Wide Area Networks (ISCW)
640-802	Cisco Certified Network Administrator (CCNA)
640-863	Cisco Certified Design Associate (CCDA)
642-631	Cisco Advanced Wireless LAN Field Specialist (AWLANFE)
642-504	Securing Networks with Cisco Routers and Switches (SNRS)
	Comptia
SY0-101	Comptia Network+ (2002 Edition)
SY0-201	Comptia Security+ (2008 Edition)
	Certified Wireless Networking Professional (CWNP)
PW0-104	Certified Wireless Network Administrator
PW0-201	Certified Wireless Security Professional

Up-to-date experience with Windows 98 / 2000 / 2003 / 2008 / 7, Exchange 2003 / 2007, Terminal Server, SQL Server, Linux CentOS 5.X / Redhat / Fedora / Ubuntu / Debian, Backup Exec, Arcserve, IPv4, IPv6 and a whole range of network protocols such as STP, PVRST+, MST, OSPF, EIGRP, IS-IS, BGP, security.