Practice set
CompTIA Network+ N10-009 questions
Question 1mediummultiple choice
Full question →A network engineer needs to connect two switches located 400 meters apart. The cable run includes high electromagnetic interference from nearby machinery. The engineer decides to use fiber optic cabling. Which transceiver type and fiber combination should be used to ensure the link reaches 400 meters while remaining cost-effective?
Question 2mediummultiple choice
Full question →A network engineer is designing a new switched network and needs to ensure that broadcast traffic from one department does not reach another department's workstations. The engineer plans to use VLANs. Which of the following must be configured on the switches to isolate broadcast domains as intended?
Question 3hardmultiple choice
Full question →A security engineer is configuring a site-to-site VPN between two branch offices. The requirement is to encrypt all traffic between the two networks using IPsec. Which IPsec mode should be used to encrypt the entire IP packet including the original header?
Question 4mediummultiple choice
Full question →A network administrator is connecting two switches to increase bandwidth and provide redundancy. Which technology should be used to combine multiple physical links into a single logical link?
Question 5mediummultiple choice
Full question →A network administrator is experiencing issues where unauthorized devices are offering IP addresses to clients, causing connectivity problems. Which security feature should be enabled on switches to prevent this?
Question 6easymultiple choice
Full question →A network administrator is troubleshooting a connectivity issue and suspects the problem is related to the physical cabling. At which layer of the OSI model should the administrator begin their investigation?
Question 7easymultiple choice
Full question →A network administrator needs to generate a report of all MAC addresses learned on each switch port to assist with inventory management. Which command-line utility can be used to view the MAC address table on a switch?
Question 8mediummultiple choice
Full question →A network engineer is designing a network for a large organization. The engineer needs to ensure that broadcast traffic from one VLAN does not propagate to other VLANs while still allowing inter-VLAN communication. Which of the following devices is required to route between VLANs?
Question 9mediummultiple choice
Full question →A network administrator needs to identify which application protocols are consuming the most bandwidth on the company WAN link. Which of the following tools should the administrator use?
Question 10mediummultiple choice
Full question →A network administrator needs to identify which devices are generating the most traffic on a WAN link. The administrator requires detailed flow data including source and destination IP addresses, ports, and protocols. Which technology should be deployed?
Question 11mediummultiple choice
Full question →A network engineer is configuring a Link Aggregation Group (LAG) between two switches. Switch A is set to LACP active mode. Which mode should be configured on Switch B to form the LAG?
Question 12mediummultiple choice
Full question →A network administrator needs to replace a core switch that is nearing end-of-life. According to change management best practices, which step should the administrator perform FIRST?
Question 13mediummultiple choice
Full question →A network engineer is implementing OSPF on a router. All directly connected neighbors are listed with state FULL, but routes from another area are not appearing in the routing table. Which of the following is the most likely cause?
Question 14mediummultiple choice
Full question →A network administrator needs to schedule a firmware update for several switches during a maintenance window. Which of the following documents should be updated immediately after the changes are complete?
Question 15easymultiple choice
Full question →A network administrator needs to schedule a firmware upgrade for a critical router. Which document should be used to formally communicate the change, seek approval, and track the implementation?
Question 16easymultiple choice
Full question →A network administrator needs to schedule a firmware upgrade for a critical switch during a maintenance window. After the upgrade is completed and verified, which document should the administrator update to reflect the new firmware version?
Question 17hardmultiple choice
Full question →A network engineer has successfully established an IPsec site-to-site VPN tunnel between a branch office (10.0.1.0/24) and the main office (192.168.1.0/24). The tunnel status shows as active, and both sides can ping each other's tunnel interface IP addresses. However, users at the branch office cannot ping the main office server at 192.168.1.10, and the main office cannot ping the branch office server at 10.0.1.10. The firewall rules on both sides permit IPsec traffic and all internal traffic. What should the engineer check NEXT?
Question 18mediummultiple choice
Full question →A user reports slow network performance on their workstation. The technician checks the switch port and sees a high number of CRC errors. Which of the following is the MOST likely cause of this issue?
Question 19easymultiple choice
Full question →Which of the following network protocols operates at the Transport layer of the OSI model and provides connection-oriented, reliable data delivery?
Question 20mediummultiple choice
Full question →A security engineer is configuring port security on a switch to prevent unauthorized devices from connecting. The requirement is that only the first device to connect to a port is allowed, and if a different device connects, the port should be disabled. Which port security violation mode should be configured?
Question 21hardmultiple choice
Full question →A user reports intermittent inability to access websites. When the issue occurs, the user can ping external IP addresses (e.g., 8.8.8.8) but cannot ping domain names like google.com. The user's IP configuration shows a DNS server address of 8.8.8.8. What is the most likely cause?
Question 22easymultiple choice
Full question →Which of the following is a characteristic of a connectionless protocol at the transport layer?
Question 23easymultiple choice
Full question →A network administrator needs to update the firmware on a critical core switch. According to change management best practices, which step should be completed FIRST?
Question 24hardmultiple choice
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