The aim of this civil service is to find out to what extent the students understand the basic topics of cable crimping and network design. This community service provides understanding, understanding, compiling, and using computer network simulation software (packet tracer) as well as training in cable crimping and testing of local area network (LAN) based computer networks. The network simulation community service method used is the experimental and design method, and is carried out in a group, pre-test and post-test design. The results of this community service were carried out in 2 sessions as well as in the supervision of carrying out activities with direct practice and carrying out reflective activities aimed at the level of understanding that the students had after holding the training. This was evident from the treatment of the students in conducting LAN testing practices in the network, where 25 students who completed the exercise were declared successful or 100% capable of conducting local area network tests by 25 students.

This study analyzes the influence of leadership style on employee job satisfaction Alfamart Nagoya Batam. The method used for sampling in this study is a survey. The sample used is 50 respondents Alfamart employees. Data collection techniques using a questionnaire technique. While the analysis of the data using quantitative analysis, namely validity test, reliability test, classical assumption test, multiple linear regression analysis, coefficient of determination analysis (R2) and hypothesis testing through t test (partial) and f test (simultaneous). This study obtained multiple linear regression equation Y = (-0.451) + -0.255 + 0.316 +0.152. While the partial hypothesis test (t test) the leadership style variable (X1) has an effect on employee job satisfaction, it is proven from the results of the t- count 2.970 t table 2.011 and Sig 0.005 0.05, the work environment variable (X2) has a significant effect. significant job satisfaction, proved from 3.294 countt table 2.011and 0.002 Sig 0.05. Meanwhile, simultaneously (f test) leadership style (X1) and work environment (X2) have a significant effect on employee job satisfaction, as evidenced by the calculated f value 155.551 f table 0.2.80 and Sig 0.000 0.05. The value of R Square is 0.910, meaning that  the variables of leadership style (X1) and work environment (X2) explain the variable of employee job satisfaction by 91.0%, while 9% is explained by other variables not discussed in this study.