View Full NADCA ASCS Exam Dumps and Practice Test Dumps. Question 181. What percentage of the current ASCS exam covers Benefits of HVAC System Cleaning 8 percent 16 percent 12 percent 42 percent Correct Answer: 2. 16 percent Explanation: The current NADCA ASCS Candidate Guide assigns approximately 16 percent of the examination to Benefits of […]

View Full NADCA ASCS Exam Dumps and Practice Test Dumps. Question 161. What does IAQ mean Internal Air Quantity Indoor Air Quota Indoor Air Quality Integrated Air Quarter Correct Answer: 3. Indoor Air Quality Explanation: IAQ stands for Indoor Air Quality. It refers to the condition of air within and around occupied buildings as it […]

View Full NADCA ASCS Exam Dumps and Practice Test Dumps. Question 141. How often should a residential air handling unit normally be inspected for cleanliness Every four years Every three years Every two years Every year Correct Answer: 4. Every year Explanation: NADCA’s recommended cleanliness inspection schedule lists a one year interval for residential air […]

View Full NADCA ASCS Exam Dumps and Practice Test Dumps. Question 121. What does AFD mean in HVAC cleaning Air Flow Damper Air Filtration Device Air Fan Drive Automatic Filter Duct Correct Answer: 2. Air Filtration Device Explanation: AFD stands for Air Filtration Device. NADCA includes this acronym in the current ASCS Candidate Guide because […]

View Full NADCA ASCS Exam Dumps and Practice Test Dumps. Question 101. What should be done with damper positions before duct cleaning Remove all dampers Fully close every damper Mark their original positions Replace all damper motors Correct Answer: 3. Mark their original positions Explanation: Damper positions and other air directional mechanical devices should be […]

View Full NADCA ASCS Exam Dumps and Practice Test Dumps. Question 81. Which ASCS exam domain has the greatest weighting Mechanical systems HVAC inspections HVAC cleaning and restoration procedures Standards and guidelines Correct Answer: 3. HVAC cleaning and restoration procedures Explanation: HVAC cleaning and restoration procedures represent the largest portion of the ASCS examination content. […]

View Full NADCA ASCS Exam Dumps and Practice Test Dumps. Question 61. What is the minimum containment level for HVAC cleaning projects Level 3 Level 4 Level 1 No containment Correct Answer: 3. Level 1 Explanation: Level 1 containment is the minimum level of containment required for HVAC system component cleaning projects under NADCA guidance. […]

View Full NADCA ASCS Exam Dumps and Practice Test Dumps. Question 41. What should happen immediately after HVAC component cleaning Apply coating Restart the system Inspect the cleaned work Remove all filters Correct Answer: 3. Inspect the cleaned work Explanation: HVAC components should be inspected after cleaning so the technician can verify that the required […]

View Full NADCA ASCS Exam Dumps and Practice Test Dumps. Question 21. What must a service opening preserve in an HVAC system Building paint color Refrigerant temperature Structural thermal and functional integrity Outdoor humidity Correct Answer: 3. Structural thermal and functional integrity Explanation: A service opening created for HVAC assessment, cleaning, or restoration must not […]

View Full NADCA ASCS Exam Dumps and Practice Test Dumps. Question 1. What is the primary purpose of HVAC system cleaning Increase refrigerant pressure Remove accumulated contaminants Change building temperature Increase duct size Correct Answer: 2. Remove accumulated contaminants Explanation: HVAC system cleaning is primarily performed to remove accumulated particulate matter, debris, and other contaminants […]

View Full LPI 202-450  Exam Dumps and Practice Test Dumps   Question 381. Which BIND command can be used to reload zone data without fully restarting the named service? named-checkzone rndc reload dig reload host -r Correct Answer: 2. rndc reload Explanation :- The rndc reload command instructs a running BIND server to reload its […]

View Full LPI 202-450  Exam Dumps and Practice Test Dumps   Question 361. Which BIND configuration file commonly contains the primary server-wide DNS configuration? /etc/hosts /etc/resolv.conf /etc/named.conf /etc/dhcp/dhcpd.conf Correct Answer: 3. /etc/named.conf Explanation :- The /etc/named.conf file is the primary configuration file commonly used by BIND named servers. It can define global server options, logging, […]

View Full LPI 202-450  Exam Dumps and Practice Test Dumps   Question 341. Which BIND directive controls whether a server will send recursive queries on behalf of clients? allow-transfer recursion notify check-names Correct Answer: 2. recursion Explanation :- The recursion directive in BIND controls whether recursive query processing is enabled. When set to yes, the […]

View Full LPI 202-450  Exam Dumps and Practice Test Dumps   Question 321. Which BIND directive specifies the IP addresses and ports on which named accepts DNS queries? allow-query query-source listen-on query-address Correct Answer: 3. listen-on Explanation :- The BIND listen-on directive specifies the IPv4 addresses and ports on which the DNS server listens for […]

View Full LPI 202-450  Exam Dumps and Practice Test Dumps   Question 301. Which BIND directive determines whether a server performs recursive queries? recursion recursive-query enable-recursion recursive-mode Correct Answer: 1. recursion Explanation :- The BIND recursion option controls whether the DNS server performs recursive queries. When enabled, the server can resolve names by querying other […]