摘要:To help alleviate the work activity in PT. PLN (Persero) RJKB then built acomputer network LAN. The research objective was to analyze the performanceof computer networks at this company. The method used in this study largelydrawn from the work practices performed at. PLN (Persero) RJKB in April 2006for a month. Star topology is used in this company. With LAN networkdibangunya at. PLN (Persero) Region of Jakarta, Banten (RJKB) effectivenessbecomes much more good worse.