WIRESHARK CERTIFIED NETWORK ANALYST (WCNA) CERTIFICATION EXAM
COMPLETE PRACTICE TEST BANK QUESTIONS AND ANSWERS | VERIFIED
SOLUTIONS | UPDATED 2026/2027 STUDY GUIDE
Examiner/Administrator: Wireshark University / The Wireshark Certified Network
Analyst Program
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
WIRESHARK CERTIFIED NETWORK ANALYST (WCNA) CERTIFICATION EXAM
2026/2027 EDITION
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
COMPLETE PRACTICE EXAM
100+ MULTIPLE-CHOICE QUESTIONS
PASSING SCORE: 70%
TESTING TIME: 120 MINUTES
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
TABLE OF CONTENTS
• Network Analysis Fundamentals and Packet Capture Concepts
• Wireshark Interface, Navigation, and Configuration
• Capture Filters and Display Filters
• TCP/IP Protocol Analysis and Troubleshooting
• Network Traffic Investigation and Packet Interpretation
• Advanced Protocol Analysis Techniques
• Wireless and Security Traffic Analysis
• Performance Monitoring and Network Diagnostics
• Expert Wireshark Features and Analysis Workflows
WIRESHARK UNIVERSITY / WCNA CERTIFICATION STANDARDS || ALIGNED WITH
PROFESSIONAL NETWORK ANALYSIS COMPETENCIES || ORIGINAL PRACTICE
EXAMINATION MATERIAL || COMPREHENSIVE CERTIFICATION PREPARATION ||
100% EDUCATIONAL STUDY RESOURCE || ADVANCED NETWORK ANALYST
TRAINING GUIDE || PROFESSIONAL EXAMINATION USE - 2026/2027 EDITION
,Network Analysis Fundamentals and Packet Capture Concepts
Q1. A network analyst is investigating intermittent application delays reported by
users. Packet captures show normal DNS resolution but noticeable delays before
TCP data transfer begins. Which Wireshark analysis approach is MOST appropriate
for identifying the issue?
A. Disable TCP analysis features to reduce capture complexity
B. Examine TCP handshake timing and connection establishment delays
C. Filter only HTTP response packets and ignore TCP segments
D. Export packets without timestamps for simplified comparison
Correct Answer: 🔴 B. Examine TCP handshake timing and connection
establishment delays
Explanation: 🔹 TCP connection establishment analysis is critical when delays occur
before application data exchange. Reviewing SYN, SYN-ACK, and ACK timing helps
determine whether latency originates from network delay, server response time, or
connection issues. Option A is incorrect because TCP analysis features provide valuable
troubleshooting information. Option C ignores the transport layer where the delay
occurs. Option D removes essential timing information required for performance
analysis.
Q2. During a packet capture review, an analyst observes multiple retransmitted
TCP segments. Which conclusion is MOST accurate?
A. The application layer is definitely corrupted
B. Retransmissions may indicate packet loss or network reliability issues
C. TCP retransmissions always indicate a security attack
D. The Ethernet frame format is invalid
Correct Answer: 🔴 B. Retransmissions may indicate packet loss or network
reliability issues
Explanation: 🔹 TCP retransmissions commonly occur when packets are lost, delayed,
or received incorrectly. Analysts use retransmission patterns to investigate congestion,
,faulty links, wireless interference, or routing problems. Option A is incorrect because
TCP handles reliability independently of application corruption. Option C is incorrect
because retransmissions are not automatically malicious. Option D relates to frame
structure and is unrelated.
Q3. A technician starts Wireshark on a workstation but captures no traffic from
other devices on the network. What is the MOST likely reason?
A. The workstation is not connected to the internet
B. The network switch prevents visibility of unrelated unicast traffic
C. Wireshark cannot capture Ethernet traffic
D. TCP packets cannot be captured on switched networks
Correct Answer: 🔴 B. The network switch prevents visibility of unrelated unicast
traffic
Explanation: 🔹 Modern switched networks forward unicast traffic only to the
destination port, meaning a standard workstation capture usually sees its own traffic.
Port mirroring, network taps, or appropriate capture locations are required for broader
visibility. Options C and D are incorrect because Wireshark supports Ethernet and TCP
capture. Option A does not explain the lack of other device traffic.
Q4. A security analyst wants to capture all traffic involving a specific server IP
address before analyzing it in Wireshark. Which method is MOST suitable during
capture?
A. Use a capture filter based on the server IP
B. Apply a display filter after capture only
C. Disable packet timestamps
D. Convert the capture into text format immediately
Correct Answer: 🔴 A. Use a capture filter based on the server IP
, Explanation: 🔹 Capture filters reduce the amount of collected traffic by selecting
packets during capture. This improves efficiency when focusing on a specific host.
Display filters operate after packets have already been captured. Options C and D do
not assist targeted collection.
Q5. A network engineer opens a packet capture file and wants to quickly identify
conversations between hosts. Which Wireshark feature should be used?
A. Packet coloring rules only
B. Conversations statistics
C. File compression settings
D. Interface configuration panel
Correct Answer: 🔴 B. Conversations statistics
Explanation: 🔹 The Conversations feature provides summarized communication
relationships between endpoints, including addresses, ports, packet counts, and
transferred data. This helps analysts identify major traffic flows. Other options do not
provide communication summaries.
Q6. Which statement BEST describes the purpose of packet timestamps in
Wireshark analysis?
A. They identify the encryption algorithm used
B. They provide timing information for performance and sequence analysis
C. They replace IP addressing information
D. They determine the operating system automatically
Correct Answer: 🔴 B. They provide timing information for performance and
sequence analysis
Explanation: 🔹 Packet timestamps allow analysts to measure delays, retransmissions,
response times, and traffic patterns. Encryption algorithms and operating systems
COMPLETE PRACTICE TEST BANK QUESTIONS AND ANSWERS | VERIFIED
SOLUTIONS | UPDATED 2026/2027 STUDY GUIDE
Examiner/Administrator: Wireshark University / The Wireshark Certified Network
Analyst Program
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
WIRESHARK CERTIFIED NETWORK ANALYST (WCNA) CERTIFICATION EXAM
2026/2027 EDITION
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
COMPLETE PRACTICE EXAM
100+ MULTIPLE-CHOICE QUESTIONS
PASSING SCORE: 70%
TESTING TIME: 120 MINUTES
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
TABLE OF CONTENTS
• Network Analysis Fundamentals and Packet Capture Concepts
• Wireshark Interface, Navigation, and Configuration
• Capture Filters and Display Filters
• TCP/IP Protocol Analysis and Troubleshooting
• Network Traffic Investigation and Packet Interpretation
• Advanced Protocol Analysis Techniques
• Wireless and Security Traffic Analysis
• Performance Monitoring and Network Diagnostics
• Expert Wireshark Features and Analysis Workflows
WIRESHARK UNIVERSITY / WCNA CERTIFICATION STANDARDS || ALIGNED WITH
PROFESSIONAL NETWORK ANALYSIS COMPETENCIES || ORIGINAL PRACTICE
EXAMINATION MATERIAL || COMPREHENSIVE CERTIFICATION PREPARATION ||
100% EDUCATIONAL STUDY RESOURCE || ADVANCED NETWORK ANALYST
TRAINING GUIDE || PROFESSIONAL EXAMINATION USE - 2026/2027 EDITION
,Network Analysis Fundamentals and Packet Capture Concepts
Q1. A network analyst is investigating intermittent application delays reported by
users. Packet captures show normal DNS resolution but noticeable delays before
TCP data transfer begins. Which Wireshark analysis approach is MOST appropriate
for identifying the issue?
A. Disable TCP analysis features to reduce capture complexity
B. Examine TCP handshake timing and connection establishment delays
C. Filter only HTTP response packets and ignore TCP segments
D. Export packets without timestamps for simplified comparison
Correct Answer: 🔴 B. Examine TCP handshake timing and connection
establishment delays
Explanation: 🔹 TCP connection establishment analysis is critical when delays occur
before application data exchange. Reviewing SYN, SYN-ACK, and ACK timing helps
determine whether latency originates from network delay, server response time, or
connection issues. Option A is incorrect because TCP analysis features provide valuable
troubleshooting information. Option C ignores the transport layer where the delay
occurs. Option D removes essential timing information required for performance
analysis.
Q2. During a packet capture review, an analyst observes multiple retransmitted
TCP segments. Which conclusion is MOST accurate?
A. The application layer is definitely corrupted
B. Retransmissions may indicate packet loss or network reliability issues
C. TCP retransmissions always indicate a security attack
D. The Ethernet frame format is invalid
Correct Answer: 🔴 B. Retransmissions may indicate packet loss or network
reliability issues
Explanation: 🔹 TCP retransmissions commonly occur when packets are lost, delayed,
or received incorrectly. Analysts use retransmission patterns to investigate congestion,
,faulty links, wireless interference, or routing problems. Option A is incorrect because
TCP handles reliability independently of application corruption. Option C is incorrect
because retransmissions are not automatically malicious. Option D relates to frame
structure and is unrelated.
Q3. A technician starts Wireshark on a workstation but captures no traffic from
other devices on the network. What is the MOST likely reason?
A. The workstation is not connected to the internet
B. The network switch prevents visibility of unrelated unicast traffic
C. Wireshark cannot capture Ethernet traffic
D. TCP packets cannot be captured on switched networks
Correct Answer: 🔴 B. The network switch prevents visibility of unrelated unicast
traffic
Explanation: 🔹 Modern switched networks forward unicast traffic only to the
destination port, meaning a standard workstation capture usually sees its own traffic.
Port mirroring, network taps, or appropriate capture locations are required for broader
visibility. Options C and D are incorrect because Wireshark supports Ethernet and TCP
capture. Option A does not explain the lack of other device traffic.
Q4. A security analyst wants to capture all traffic involving a specific server IP
address before analyzing it in Wireshark. Which method is MOST suitable during
capture?
A. Use a capture filter based on the server IP
B. Apply a display filter after capture only
C. Disable packet timestamps
D. Convert the capture into text format immediately
Correct Answer: 🔴 A. Use a capture filter based on the server IP
, Explanation: 🔹 Capture filters reduce the amount of collected traffic by selecting
packets during capture. This improves efficiency when focusing on a specific host.
Display filters operate after packets have already been captured. Options C and D do
not assist targeted collection.
Q5. A network engineer opens a packet capture file and wants to quickly identify
conversations between hosts. Which Wireshark feature should be used?
A. Packet coloring rules only
B. Conversations statistics
C. File compression settings
D. Interface configuration panel
Correct Answer: 🔴 B. Conversations statistics
Explanation: 🔹 The Conversations feature provides summarized communication
relationships between endpoints, including addresses, ports, packet counts, and
transferred data. This helps analysts identify major traffic flows. Other options do not
provide communication summaries.
Q6. Which statement BEST describes the purpose of packet timestamps in
Wireshark analysis?
A. They identify the encryption algorithm used
B. They provide timing information for performance and sequence analysis
C. They replace IP addressing information
D. They determine the operating system automatically
Correct Answer: 🔴 B. They provide timing information for performance and
sequence analysis
Explanation: 🔹 Packet timestamps allow analysts to measure delays, retransmissions,
response times, and traffic patterns. Encryption algorithms and operating systems
