CompTIA A+ Core 1 Practice Test 5 1 / 20A technician is configuring a router for a small business. What security feature should they enable to prevent unauthorized devices from connecting? Screen resolution adjustment Overclocking MAC address filtering Printer queue management Auto-brightness Correct Answer: MAC address filteringExplanation: MAC filtering allows only approved devices to connect to the network.Correct Answer: MAC address filteringExplanation: MAC filtering allows only approved devices to connect to the network.2 / 20A technician is troubleshooting a home Wi-Fi network. Which encryption method should be avoided due to security risks? WPA2 WEP WPA3 AES TKIP Correct Answer: WEPExplanation: WEP is outdated and vulnerable to security breaches.Correct Answer: WEPExplanation: WEP is outdated and vulnerable to security breaches.3 / 20A technician needs to configure a router to allow remote access to security cameras. What should they enable? Port forwarding Wi-Fi Direct Screen mirroring DHCP reservation Automatic updates Correct Answer: Port forwardingExplanation: Port forwarding allows external access to devices inside a private network.Correct Answer: Port forwardingExplanation: Port forwarding allows external access to devices inside a private network.4 / 20A technician is upgrading a laptop’s Wi-Fi card to support the latest wireless standard. Which standard should they look for? 802.11n 802.11ax 802.11g 802.11a 802.11b Correct Answer: 802.11axExplanation: 802.11ax (Wi-Fi 6) is the latest and most efficient wireless standard.Correct Answer: 802.11axExplanation: 802.11ax (Wi-Fi 6) is the latest and most efficient wireless standard.5 / 20A technician is installing a new wireless access point in an office. What should they do to maximize coverage? Put it near the floor Place it in a central location, away from obstructions Install it in a metal cabinet Place it in a corner of the building Disable the 5GHz band Correct Answer: Place it in a central location, away from obstructionsExplanation: A central location with minimal interference ensures the best coverage.Correct Answer: Place it in a central location, away from obstructionsExplanation: A central location with minimal interference ensures the best coverage.6 / 20A technician needs to set up a guest Wi-Fi network for visitors. What is the main security benefit of a guest network? It provides faster speeds than the main network It blocks all external websites It disables Bluetooth automatically It isolates guest devices from internal network resources It allows access to the router’s settings Correct Answer: It isolates guest devices from internal network resourcesExplanation: Guest networks keep visitors separate from the main network for security.Correct Answer: It isolates guest devices from internal network resourcesExplanation: Guest networks keep visitors separate from the main network for security.7 / 20A user wants to connect their gaming console to the network for the lowest latency. What should they use? Wi-Fi 6 Wi-Fi 5 A Bluetooth connection Wired Ethernet A range extender Correct Answer: Wired EthernetExplanation: A wired connection provides lower latency and better stability than Wi-Fi.Correct Answer: Wired EthernetExplanation: A wired connection provides lower latency and better stability than Wi-Fi.8 / 20A technician is configuring a router in a crowded office. Which Wi-Fi channel should they use to reduce interference? 2, 5, or 9 2, 5, or 9 1, 6, or 11 7, 8, or 10 4, 12, or 13 Correct Answer: 1, 6, or 11Explanation: These channels do not overlap in the 2.4GHz band, reducing interference.Correct Answer: 1, 6, or 11Explanation: These channels do not overlap in the 2.4GHz band, reducing interference.9 / 20A user reports that their laptop Wi-Fi speed drops significantly when moving to another room. What is the likely cause? A faulty graphics driver Physical obstructions and interference The USB power settings The monitor refresh rate A disabled antivirus software Correct Answer: Physical obstructions and interferenceExplanation: Walls, furniture, and other electronics can block or weaken Wi-Fi signals.Correct Answer: Physical obstructions and interferenceExplanation: Walls, furniture, and other electronics can block or weaken Wi-Fi signals.10 / 20A technician is configuring a network and needs a wireless standard with the longest range. Which should they choose? 802.11n 802.11ac 802.11b 802.11g 802.11a Correct Answer: 802.11nExplanation: 802.11n provides the longest range due to its MIMO technology and support for both 2.4GHz and 5GHz.Correct Answer: 802.11nExplanation: 802.11n provides the longest range due to its MIMO technology and support for both 2.4GHz and 5GHz.11 / 20A technician is troubleshooting slow Wi-Fi speeds in an apartment building. What is a likely cause? A damaged monitor The printer driver A faulty sound card A slow mouse cursor Channel interference from neighboring networks Correct Answer: Channel interference from neighboring networksExplanation: In dense areas, Wi-Fi networks on the same or overlapping channels can cause interference.Correct Answer: Channel interference from neighboring networksExplanation: In dense areas, Wi-Fi networks on the same or overlapping channels can cause interference.12 / 20A user wants to prioritize video streaming on their home network. What setting should they adjust in the router? Screen brightness MAC filtering QoS (Quality of Service) Firewall settings Device Manager Correct Answer: QoS (Quality of Service)Explanation: QoS settings allow prioritization of network traffic for certain applications or devices.Correct Answer: QoS (Quality of Service)Explanation: QoS settings allow prioritization of network traffic for certain applications or devices.13 / 20A technician is installing a new dual-band router. What frequency bands will it support? 2.4GHz and 5GHz 1GHz and 3GHz 5GHz and 6GHz 900MHz and 1.2GHz 3.2GHz and 4.1GHz Correct Answer: 2.4GHz and 5GHzExplanation: Dual-band routers operate on both 2.4GHz and 5GHz for compatibility and performance.Correct Answer: 2.4GHz and 5GHzExplanation: Dual-band routers operate on both 2.4GHz and 5GHz for compatibility and performance.14 / 20Which Wi-Fi standard introduced MU-MIMO (Multi-User Multiple Input Multiple Output) for better efficiency? 802.11b 802.11a 802.11ac 802.11g 802.11n Correct Answer: 802.11acExplanation: MU-MIMO allows multiple devices to communicate with the router simultaneously, improving efficiency.Correct Answer: 802.11acExplanation: MU-MIMO allows multiple devices to communicate with the router simultaneously, improving efficiency.15 / 20A technician is troubleshooting a laptop that disconnects from Wi-Fi frequently. What should be checked first? The monitor resolution Interference from other wireless devices The graphics driver The USB mouse driver The screen refresh rate Correct Answer: Interference from other wireless devicesExplanation: Nearby wireless devices, microwaves, and other electronics can cause Wi-Fi interference.Correct Answer: Interference from other wireless devicesExplanation: Nearby wireless devices, microwaves, and other electronics can cause Wi-Fi interference.16 / 20A technician is setting up a new router and wants to use the strongest encryption method for security. Which should they choose? WEP WPA WPA3 TKIP WPA2-PSK Correct Answer: WPA3Explanation: WPA3 is the latest and most secure Wi-Fi encryption standard.Correct Answer: WPA3Explanation: WPA3 is the latest and most secure Wi-Fi encryption standard.17 / 20A technician needs to extend Wi-Fi coverage in a large building. What device should they use? A wired printer A network switch A UPS A wireless range extender A graphics card Correct Answer: A wireless range extenderExplanation: Wi-Fi extenders help improve coverage in areas where the signal is weak.Correct Answer: A wireless range extenderExplanation: Wi-Fi extenders help improve coverage in areas where the signal is weak.18 / 20A user is experiencing slow speeds on their 2.4GHz Wi-Fi network. What is the best solution? Switch to a 5GHz network Increase the router’s fan speed Disable the firewall Upgrade the computer’s RAM Turn off airplane mode Correct Answer: Switch to a 5GHz networkExplanation: 5GHz Wi-Fi provides faster speeds and less interference compared to 2.4GHz.Correct Answer: Switch to a 5GHz networkExplanation: 5GHz Wi-Fi provides faster speeds and less interference compared to 2.4GHz.19 / 20A technician is configuring a new Wi-Fi network in an office with high device density. Which standard should be used for the best performance? 802.11a 802.11ax 802.11g 802.11b 802.11n Correct Answer: 802.11axExplanation: 802.11ax (Wi-Fi 6) provides better performance, higher capacity, and improved efficiency in high-density environments.Correct Answer: 802.11axExplanation: 802.11ax (Wi-Fi 6) provides better performance, higher capacity, and improved efficiency in high-density environments.20 / 20A technician is troubleshooting a laptop that cannot connect to a Wi-Fi network. Other devices are connected without issue. What should they check first? The internet provider’s website The laptop’s Wi-Fi adapter status The monitor refresh rate The USB power settings The external hard drive connection Correct Answer: The laptop’s Wi-Fi adapter statusExplanation: If only one device has trouble connecting, its Wi-Fi adapter may be disabled or malfunctioning.Correct Answer: The laptop’s Wi-Fi adapter statusExplanation: If only one device has trouble connecting, its Wi-Fi adapter may be disabled or malfunctioning.Your score isThe average score is 76% 0% Restart quiz
