The first one consists of: surveillance (to detect degradation in optical fiber components, or any other anomalous condition not preventing the signal transmission,), testing (to measure and locate any detected degradation or anomalous condition) and control (fiber identification and fiber transfer to allow the testing of the link.). network are classified in two main categories: preventive maintenance and post-fault maintenance. Maintenance functions for a broadband optical access. The installation and powering up of an optical fiber access networks requires measurement techniques for verifying the link has been configured properly and that its constituent components are functioning correctly. One of the critical issues for broadband accesss is how to test the access network infrastructure and quality of optical signal. Furthermore, the CPT was found to discriminate equally among the gender, age, and first language groups included in this study. Appropriate placements were made in 86% of the cases. The correlations demonstrated a substantial relationship between CPT and essay scores and a marked relationship between CPT and PASS scores. The results indicate that the CPT sentence skills test is a valid and reliable placement instrument for advanced- level ESL students who intend to pursue community college degrees. Finally, the instruments were evaluated by means of independent-samples t-tests for performance differences between gender, age, and first language groups. A percentage of appropriate placements was determined by comparing essay scores to CPT cutoff score ranges. Scores on the CPT and the PASS exam were compared in the same manner to verify reliability. Scores on the CPT and essays were compared by means of a Pearson product-moment correlation to validate the CPT. Also, the participants took the Placement Articulation Software Service (PASS) exam, an alternative form of the CPT. The essay exams were holistically scored by trained readers. Participants included 106 advanced ESL students who took both the CPT sentence skills test and wrote final essay exams. The study was conducted at Miami-Dade Community College, Wolfson Campus, fall 1997. They constitute a large and growing body of non-traditional students enrolled at community colleges. It is essential that scores earned by non-native speakers of English accurately reflect their ability level. If incoming students score low on the CPT, they may be required to take up to three semesters of remedial coursework. Florida community college students are mandated to take the CPT to determine preparedness, as are students at many other U.S. As the CPT is designed for native speakers of English, it was hypothesized that it could be an invalid or unreliable instrument for non-native speakers. Scores earned on the Computerized Placement Test (CPT), sentence skills, were compared to essay scores of advanced English as a Second Language (ESL) students. This dissertation describes the findings and implications of a correlational analysis.
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