NCTI Final Exam: Progression Field Tech 2- 3 Exam| New Update 2023/ 2024|Verified Questions and Answers
1. What would be the downstream throughput if
... [Show More] two QAM channels with a throughput of 38 Mbps were bonded?
Answer: 76 Mbps.
2. What are two features that were added in DOCSIS 3.1 to extend the viability of HFC networks into the next decade?
Answer: OFDM and LDPC.
3. Which step in the troubleshooting process requires a discussion with the customer to gather more detail about the problem?
Answer: Step 1: Identify the problem.
4. When analyzing a problem, what can the technician learn by asking the customer to show or demonstrate the problem?
Answer: The symptoms of the problem can be viewed and any unusual screens or customer entries can be identified.
5. When using a digital signal analyzer to troubleshoot data throughput im the DOCSIS network, what is the minimum MER into the cable modem for a 256-QAM carrier?
Answer: 32 dB or greater
6. How should the digital multimeter (DMM) be used to troubleshoot problems in the telephone wiring?
Answer: Use tie voltmeter fumction, both the network interface device (NID) and the embedded multimedia terminal adapter (EMTA) provide a steady On-hook voltage.
7. If the telephone wiring is in the bus topology and the twisted-pair cable tester is connected at the embedded multimedia terminal adapter (EMTA) with the remote unit connected to the last outlet in the loop, what is the quickest way to locate the incorrectly wired outlet if the tester indicates a wiring error?
Answer: Break the loop into smaller sections and retest the two sections to identify which one has the wiring error. Continue to divide the section with the error into smaller sections until the wiring error is identified.
8. After resolving the problem with the premises wiring issue, which of the following is the next step in the six-step process that the technician should take?
Answer: Verify that the problem has been resolved and that phone service is running perfectly on all phones.
9. In unshielded twisted-pair (UTP) cable, what is the term that describes when an information-carrying conductor makes contact with a grounded conductor?
Answer: ground fault
10. How is silver satin cable used to connect telephone equipment to wall outlets typically pinned?
Answer: D) Reversed at opposite ends, or cross-pinned.
11. What is the difference between the wiring configurations for a residential, 8-position, 8-contact (8P8C) modular plug and jack in the Universal Service Order Codes (USC) and ANSI/TIA/EIA 570-B?
Answer: The placement of pair numbers 3 and 4.
12. What should be checked as a possible cause of hum on a customer's telephone line?
Answer: Shielding problems in the station wiring, poor terminations, or poor grounding and bonding connections.
13. In the customer premises, what could cause some dual tone multifrequency (DTMF) touch-tone telephones to have continuous dial tone caused by polarity reversal, but not other DTF telephones?
Answer: The telephone wiring polarity is incorrect, and the customer has a mix of older and newer DTMF touch-tone telephones.
14. What is the likely problem when there is dial tone on one phone connected to an outlet, but not on two other phones connected to two different outlets?
Answer: An open circuit caused by a break in a conductor, poor contact in a modular connector, or an incorrect wire connection.
15. A customer reports a problem of no dial tone (NDT). Upon inspection, the technician notices that new carpeting has been installed. What should the technician do next?
Answer: Look for a cable that runs under the carpet; it is likely that the cable has a short from the carpeting tack strip.
What uses the 2.4-GHz band and runs at 54 Mbps?
Answer: 802.11g
In regard to Wi-Fi networks, what is WPS used for?
Answer: To enable connection to a Wi-Fi network without a Windows interface.
What is it called when several computers are sharing files without a WAP?
Answer: ad hoc mode
What is the standard encryption method used with WPA2?
Answer: AES
When configuring a wireless router, why is changing the service set identifier (SSID) from the device default recommended?
Answer: To avoid telling hackers exactly what the device is.
Which mode uses a wireless access point (WAP) connected to a wired network?
Answer: infrastructure [Show Less]