See my recent experience over the past 6 years:
Linux Administrator / Network Administrator
Position Overview
Management of all Red Hat Enterprise Linux servers used for providing VoIP telephony services for governmental institutions at the city, county, state, and federal level. The Red Hat Enterprise Linux infrastructure is the backbone to the companies’ services they provide in the telecommunications industry. Primary duties and time spent is at our Dallas data center. The majority of time spent at the data center is on my own. I am self confident, self-reliant and a self-starter individual. The company has a total of seven data centers throughout the United States. Currently the infrastructure I manage at our data center is growing due to consolidation and company growth. I am on site individual of ensuring the complete migration of our data center to a new location with minimal disruption to our customers. The primary duties include but not limited to deploying, managing, tuning and monitoring of over 100 Red Hat Enterprise version 4, 5, and 6 Linux servers. Provide fast and accurate service for when critical services become disrupted. Designed, tested, and deployed a customized automated system Linux install system to be able to deploy Red Hat Linux Servers using scripts based on the function/service the server provides. Provide support for all network layer 2 equipment such as management of Cisco switches, VLAN’s on all Cisco switches.