A malicious user sent double-tagged frames on an 802.1Q-enabled port and immediately gained access to additional network resources. Which of the following attacks did the malicious user successfully execute?
A. Evil twin
B. Man-in-the-middle
C. DNS poisoning
D. VLAN hopping
Which of the following should a technician use to keep the STP topology predictable and consistent?
A. Root guard
B. Flood guard
C. Dynamic ARP inspection
D. Ingress ACLs
A rural municipality has built an external public WiFi meshed network using omnidirectional antennas. After the initial build, the performance meets expectations, and the municipality enters a six-month pilot program in the fall. By the end of the pilot program in the spring, the performance has fallen dramatically. The pilot has a static number of users with no increases in usage from beginning to end. Which of the following would be the MOST likely reason for the performance issues?
A. Too many users in the pilot creating overcapacity issues
B. Buildings creating reflection issues
C. Omnidirectional antennas being insufficient for outdoor use
D. Foliage creating absorption issues
A network engineer is surveying the existing wireless infrastructure to propose additional changes to increase throughput. The SSID is already on an uncongested 5GHz frequency. Which of the following should the engineer configure?
A. Channel bonding
B. 802.11a
C. Dual-band frequency
D. An omnidirectional antenna
A network technician is required to install a network device to provide service to an office area. The office area has 23 users and two printers that must be able to connect to the file server in a different building. Which of the following network devices should the technician use?
A. Media converter
B. Switch
C. Bridge
D. Wireless range extender
A new application is being deployed. The application team has asked the network team to monitor network performance and create alerts if fluctuations in the round-trip time for that traffic occur. Which of the following should the network team monitor to meet this requirement?
A. Bandwidth
B. Latency
C. Loss
D. Jitter
Branch users are experiencing issues with videoconferencing. Which of the following will the company MOST likely configure to improve performance for these applications?
A. Link Aggregation Control Protocol
B. Dynamic routing
C. Quality of service
D. Network load balancer
E. Static IP addresses
A customer has requested Ethernet cabling for a new office building. A technician is dispatched to perform a site survey and does not note any special considerations for the installation. Which of the following cable types will the technician MOST likely recommend for this installation?
A. Metallic sheathed
B. Fiber optic
C. Unshielded twisted pair
D. Coaxial
A technician is called to a customer site because the modem has failed and needs to be replaced. The technician connects the existing firewall to a modem taken from another customer site and ensures the users can reach the Internet. That night, a remote vendor tries to transfer a file to the customer's server using FTP but is unable to make the connection. There were no issues the previous night. Which of the following is the MOST likely cause of the problem?
A. The firewall rules in the router were not reconfigured for use with the newer ISP protocols.
B. The modern may have its own built-in firewall that is interfering with the communications.
C. The ISP cannot route traffic from the new modern because it came from another ISP.
D. The NAT that converts the public IP to the internal private IP of the server is using an incorrect port.
A junior technician deployed new computers in a company, and users are reporting issues with file transfers to network shares being slower than with the previous computers. The network administrator verifies the switch's gigabit ports are set to autonegotiate. Which of the following should the administrator perform NEXT to determine the issue?
A. Change the default gateway on the new computers.
B. Update the drivers for the NIC cards.
C. Move the computers to a different VLAN.
D. Determine if the NIC speed on the computers is configured correctly.
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