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A data center interconnect using a VXLAN was recently implemented. A network engineer observes slow performance and fragmentation on the interconnect. Which of the following technologies will resolve the issue?
- A. 802.1Q tagging
- B. Spanning tree
- C. Link aggregation
- D. Jumbo frames
A new server is deployed in a trusted zone and is validated to be online with all appropriate services running. However, users in a perimeter network cannot access the server. Which of the following should a network administrator do to resolve the reported issue?
- A. Create a TXT record on the DNS server for the new server.
- B. Update the firewall ACL to allow access to the new server.
- C. Configure a static route for the user VLAN to the new server.
- D. Insert a static ARP entry for the new server on the Layer 3 switch.
Network administrators are using the Telnet protocol to administer network devices that are on the 192.168.1.0/24 subnet. Which of the following tools should the administrator use to best identify the devices?
- A. dig
- B. nmap
- C. tracert
- D. telnet
A network administrator recently updated configurations on a Layer 3 switch. Following the updates, users report being unable to reach a specific file server. Which of the following is the most likely cause?
- A. Incorrect ACLs
- B. Switching loop
- C. Duplicate IP addresses
- D. Wrong default route
A security administrator wants to discover zero-day attacks before they can be used on the company’s network. Which of the following can the administrator use to accomplish this task?
- A. Central repository
- B. Honeypot
- C. Next-generation firewall
- D. Evil twin
Users at a satellite office are experiencing issues when using videoconferencing. Which of the following should a technician focus on first to rectify these issues?
- A. Quality of service
- B. Network signal
- C. Time to live
- D. Load balancing
A network administrator is trying to locate the switch interface a PC is connected to. The administrator accesses the local switch, pings the PC IP address, and then uses the command show arp. Which of the following commands should the administrator use next?
- A. show route
- B. show mac-address-table
- C. show vlan
- D. show interface
A user attempts to log in to a corporate website by utilizing a shortcut. The shortcut has been used many times before. The user then notices some discrepancies on the company website. Which of the following is most likely the reason for this issue?
- A. VLAN hopping
- B. ARP spoofing
- C. DNS poisoning
- D. MAC flooding
Which of the following is the correct order of components in a bottom-up approach for the three-tier hierarchical model?
- A. Access, distribution, and core
- B. Core, root, and distribution
- C. Core, spine, and leaf
- D. Access, core, and root
A client with a 2.4GHz wireless network has stated that the entire office is experiencing intermittent issues with laptops after the WAP was moved. Which of the following is the most likely reason for these issues?
- A. The network uses a non-overlapping channel.
- B. The signal is reflecting too much.
- C. The network has excessive noise.
- D. A microwave is in the office.