Essential duties require the following physical skills and work environment: With or without accommodation, the "X" indicates the overall strength demand of the position during a typical workday: Sedentary - lifting of no more than 10 pounds Light - lifting no more than 20 pounds; carrying up to 10 pounds X Medium - lifting no more than 50 pounds; carrying up to 25 pounds Heavy - lifting no more than 100 pounds; carrying up to 50 pounds Very Heavy - team lifting over 100 pounds; carrying more than 50 pounds Physical Demand Codes: The following describes whether or not the position is expected to exert the physical demands listed during a typical workday as well as the overall frequency of the task: Codes for how often: N = No E = Extensive (100 - 70% of the time) M = Moderate (60 - 30% of the time) I = Infrequent (20 - 10% of the time) A = Almost Never (M Standing M Sitting M Walking _M Lifting M Carrying _I__ Pushing/Pulling A Overhead Work E Fine Dexterity M Kneeling M Crouching A Crawling M Bending M Twisting A Climbing M Balancing E Vision E Hearing E Talking _ Other: __. Performs other related maintenance activities, such as installation, troubleshooting, and repair of the core network infrastructure, including: designing and modifying computer network configurations; installation and management of networking devices such as switches, routers, and firewalls, and specifying and installing physical network media such as patch panels, cabling, and associated mounting and racking hardware.