A network administrator is troubleshooting a user's workstation that is unable to connect to the company network. The results of commands the administrator runs on the workstation are shown below:
A router on the same network shows the following output:
Which of the following is the most likely cause of the issues?
A. Asynchronous routing
B. IP address conflict
C. DHCP server down
D. Broadcast storm
Show Answer
Correct Answer: B
Explanation: The router’s ARP table maps the workstation’s IP address (10.21.12.8) to a different MAC address than the workstation’s NIC. That mismatch most likely indicates another device is using the same IP address, causing an IP address conflict.
Question 32
A network architect needs to design a new network to connect multiple private data centers. The network must:
Provide privacy for all traffic between locations.
Use preexisting internet connections.
Use intelligent steering of application traffic over the best path.
Which of the following best meets these requirements?
A. MPLS connections
B. SD-WAN
C. Site-to-site VPN
D. ExpressRoute
Show Answer
Correct Answer: B
Explanation: SD-WAN uses existing internet connections to create secure, private tunnels between data centers and provides application-aware traffic steering to select the best available path.
Question 33
Throughout the day, a sales team experiences videoconference performance issues when the accounting department runs reports. Which of the following is the best solution?
A. Running the accounting department's reports outside of business hours
B. Using a load balancer to split the video traffic evenly
C. Configuring QoS on the corporate network switches
D. Increasing the throughput on the network by purchasing high-end switches
Show Answer
Correct Answer: C
Explanation: Configuring QoS on the network switches prioritizes latency-sensitive videoconferencing traffic over bulk report traffic, reducing interruptions when reports consume bandwidth.
Question 34
A network engineer needs to implement a cloud native solution. The solution must allow the recording of network conversation metadata of the host and appliances attached to a VPC. Which of the following will accomplish these goals with the least effort?
A. Enabling network flow
B. Configuring SNMP traps
C. Implementing QoS network tagging
D. Installing a cloud monitoring agent
Show Answer
Correct Answer: A
Explanation: Enabling network flow (such as VPC Flow Logs) is a cloud-native way to record metadata about network conversations involving hosts and appliances attached to a VPC. It requires the least effort because it does not require installing agents or configuring SNMP or QoS.
Question 35
A company is expanding its network and needs to ensure improved stability and reliability. The proposed solution must fulfill the following requirements:
Detection and prevention of network loops
Automatic configuration of ports
Standard protocol (not proprietary)
Which of the following protocols is the most appropriate?
A. STP
B. SIP
C. RTSP
D. BGP
Show Answer
Correct Answer: A
Explanation: STP (Spanning Tree Protocol) is a standard, non-proprietary Layer 2 protocol that prevents network loops by automatically determining which switch ports should forward traffic and which should be blocked.
Question 36
An architecture team needs to unify all logging and performance monitoring used by global applications across the enterprise to perform decision-making analytics. Which of the following technologies is the best way to fulfill this purpose?
A. Relational database
B. Content delivery network
C. CIEM
D. Data lake
Show Answer
Correct Answer: D
Explanation: A data lake can consolidate large volumes of logs and performance metrics from applications across the enterprise, retaining varied data in its original format for analytics and decision-making.
Question 37
An application is hosted on a three-node cluster in which each server has identical compute and network performance specifications. A fourth node is scheduled to be added to the cluster with three times the performance as any one of the preexisting nodes. The network architect wants to ensure that the new node gets the same approximate number of requests as all of the others combined. Which of the following load-balancing methodologies should the network architect recommend?
A. Round-robin
B. Load-based
C. Least connections
D. Weighted
Show Answer
Correct Answer: D
Explanation: Weighted load balancing assigns traffic in proportion to each server’s configured weight. Give the new node three times the weight of each existing node so it receives about as many requests as the three existing nodes combined.
Question 38
A company is experiencing numerous network issues and decides to expand its support team. The new junior employees will need to be onboarded in the shortest time possible and be able to troubleshoot issues with minimal assistance. Which of the following should the company create to achieve this goal?
A. Statement of work documenting what each junior employee should do when troubleshooting
B. Clearly documented runbooks for networking issues and knowledge base articles
C. Physical and logical network diagrams of the entire networking infrastructure
D. A mentor program for guiding each junior employee until they are familiar with the networking infrastructure
Show Answer
Correct Answer: B
Explanation: Clearly documented runbooks and knowledge base articles give junior employees step-by-step troubleshooting procedures and reference information, helping them become productive quickly and resolve common issues with minimal assistance.
Question 39
A cloud network engineer needs to enable network flow analysis in the VPC so headers and payload of captured data can be inspected. Which of the following should the engineer use for this task?
A. Application monitoring
B. Syslog service
C. Traffic mirroring
D. Network flows
Show Answer
Correct Answer: C
Explanation: Traffic mirroring duplicates network packets and forwards them to an analysis tool, where both packet headers and payloads can be inspected. Network flow logs provide metadata rather than full packet contents.
Question 40
A network security administrator needs to set up a solution to:
Gather all data from log files in a single location.
Correlate the data to generate alerts.
Which of the following should the administrator implement?
A. Syslog
B. Event log monitoring
C. Log management
D. SIEM
Show Answer
Correct Answer: D
Explanation: A SIEM collects and centralizes log data from multiple sources, correlates events across those logs, and generates alerts based on detected patterns.
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