WGU D325 Lesson 8 ACTUAL TEST||KEY EXAM QUESTIONS WITH CORRECT VERIFIED SOLUTIONS||A+ GRADED!!!UPDATED

WGU D325 Lesson 8 ACTUAL TEST||KEY EXAM QUESTIONS WITH CORRECT VERIFIED SOLUTIONS||A+ GRADED!!!UPDATED 2025- 2026 1) What is the role of a packet sniffer in the context of a protocol analyzer? - ANSWER To capture frames moving over the network medium 2) What is the purpose of installing a special driver for a software-based sniffer? - ANSWER To allow the frames to be read from the network stack 3) Which option is used with tcpdump to specify the network interface to listen on? - ANSWER -i 4) How can the detail of the information shown about each frame be increased in tcp dump? - ANSWER Using the -v, -vv, or -vvv switches 5) What does the -w switch do in tcp dump? - ANSWER Writes output to a file 6) What is the purpose of using display filters in Wireshark? - ANSWER To show only particular frames or sequences of frames 7) In Wireshark, where can you access tools for traffic analysis? - ANSWER Statistics menu 8) Which open-source tool is mentioned as a graphical packet capture and analysis utility? - ANSWER Wireshark 9) What type of data transfer is described as bursty? - ANSWER File transfer 10) What are latency and jitter in the context of network performance? - ANSWER Problems of timing and sequence of packet delivery 11) What is packet loss? - ANSWER The discarding of data packets in a network 12) What is considered an acceptable error rate in general terms? - ANSWER Under 1 percent 13) What is the significance of monitoring queue length in network performance? - ANSWER It helps determine whether the link is a bottleneck. 14) What role does a NetFlow exporter play in a network? - ANSWER It defines cache flows. 15) What is the primary purpose of monitoring individual interface statistics in a network? - ANSWER To diagnose performance issues 16) Why is collecting just the packet metadata preferred over recording each frame? - ANSWER It reduces the bandwidth required by the sniffer. 17) What do "top talkers" and "top listeners" refer to in network analysis? - ANSWER Top talkers are interfaces generating the most outgoing traffic, while top listeners are the interfaces receiving the most incoming traffic. 18) What advantage do website performance checkers offer for testing site response times? - ANSWER They test from the perspective of customers in different countries. 19) Which of the following is NOT a traffic class defined by DiffServ? - ANSWER Maximum Throughput 20) What is the primary purpose of using Quality of Service (QoS) mechanisms in a network? - ANSWER To prioritize certain types of traffic over others 21) A network administrator is tasked with improving the performance of a company's VoIP (Voice over Internet Protocol) system, which has been experiencing poor audio quality during peak business hours. 22) The network is also used for email, web browsing, and file transfers. The administrator decides to implement a solution to prioritize VoIP traffic over other types of traffic. 23) Which of the following solutions would be MOST effective in achieving the desired improvement in VoIP performance? - ANSWER Deploying traffic shaping to prioritize VoIP packets. 24) What is a potential consequence of using traffic policing devices instead of traffic shapers? - ANSWER Under-utilization of bandwidth during idle periods 25) What is the primary function of traffic shapers? - ANSWER To delay certain packet types based on their content 26) Why might an interface use different terms for discards and drops? - ANSWER To differentiate between frames rejected due to errors and those lost due to high load 27) You are a network engineer who has been tasked with diagnosing an intermittent network issue that occurs between a client machine (IP address 172.16.30.4) and a server (IP address 10.5.5.10). You suspect that there might be an issue with the TCP handshake or other TCP flags not being properly set during communication. 28) You decide to use tcpdump to capture and analyze the TCP traffic between these two hosts in more detail. 29) Which tcpdump command should you use to increase the verbosity of the output for detailed analysis of the TCP handshake and flags? - ANSWER tcpdump -v -i eth0 "host 172.16.30.4 and host 10.5.5.10" 30) What is a potential drawback of using an Active TAP? - ANSWER It becomes a point of failure with a power loss. 31) What role does the Spanning Tree Protocol (STP) play in preventing network issues? - ANSWER It prevents switching loops. 32) You are concerned that an attacker can gain access to your web server, make modifications to the system, and alter the log files to hide his or her actions. 33) Which of the following actions would BEST protect the log files? - ANSWER Use Syslog to send log entries to another server. 34) How does an SNMP monitor typically retrieve information from a device? - ANSWER By using the Get command 35) What is a trap in SNMP? - ANSWER A notable event alert sent by an agent 36) After a security audit, your company decides to decommission and dispose of several old printers that have been used for printing sensitive documents. 37) What step is crucial to ensure that no sensitive data can be recovered from these printers before disposal? - ANSWER Invoke the built-in factory reset routine. 38) Which of the following is NOT a valid filter expression type in tcpdump? - ANSWER size 39) Which of the following formats might a syslog message content use? - ANSWER Space- or comma-delimited fields 40) Which of the following is true about UDP scans (-sU) with Nmap? - ANSWER They can be combined with TCP scans for comprehensive coverage