Wireshark WCNA Practice Exams
Last updated on Oct 21,2026- Exam Code: WCNA
- Exam Name: Wireshark Certified Network Analyst
- Certification Provider: Wireshark
- Latest update: Oct 21,2026
Which term defines an alias name used in DNS responses?
- A . PTR
- B . HOST
- C . ALIAS
- D . CNAME
Which network problem may cause packet loss, queuing, or throttling of possible throughput maximums?
- A . smaller packet sizes
- B . minimum receive window sizes
- C . congestion along a network path
- D . an overloaded TCP connection table
The Protocol Hierarchy Statistics window helps identify unusual protocols and applications in captured traffic.
- A . True
- B . False
Window scaling is established during the TCP handshake process to enable hosts to use larger
window sizes than is 65,535.
- A . True
- B . False
The IPv4 Total Length field defines the length of the IP header, valid data and data link padding.
- A . True
- B . False
Refer to the exhibit.
This is a DNS inverse query packet used to resolve an IP address to a host name.
- A . True
- B . False
Refer to the exhibit.
This TCP Round Trip Time graph indicates the highest round trip latency time seen in this trace file is 1 millisecond.
- A . True
- B . False
By default, Mergecap combines trace files based on the order they are listed on the command-line.
- A . True
- B . False
Refer to the exhibit.
What might be the purpose of this traffic?
- A . scan to identify active hosts on a network
- B . scan to determine open TCP ports on a target
- C . scan to determine open UDP ports on a target
- D . scan to discover IP-based protocols on a target
When you disable the UDP protocol decoding process, applications that use UDP (such as DHCP and DNS) will not be decoded.
- A . True
- B . False