Match each command-line tool to its primary function.
Drag a concept onto its matching description — or click a concept then click the description.
DNS query and lookup
Display network connections and listening ports
Capture and analyze network traffic
Perform SSL/TLS cryptographic operations
Network discovery and port scanning
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
nmap: Network discovery and security scanning
These tools are commonly used for network troubleshooting and security assessments.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
nmap: Network discovery and security scanning
Why this is correct
nmap is used for network discovery, port scanning, and vulnerability detection.
nmap: Display network connections and routing tables
Why it's wrong here
Incorrect — that describes netstat, not nmap.
netstat: Display network connections, routing tables, and interface statistics
Why this is correct
netstat shows active connections, routing tables, and network interface statistics.
netstat: Capture and analyze network packets
Why it's wrong here
Incorrect — that describes tcpdump, not netstat.
tcpdump: Capture and analyze network packets
Why this is correct
tcpdump is a packet analyzer used to capture and inspect network traffic.
tcpdump: Test connectivity to a remote host
Why it's wrong here
Incorrect — that describes ping, not tcpdump.
Go deeper
About these practice questions
Courseiva writes every CAS-005 question from scratch — 968 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CAS-005 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CAS-005 exam.