200-201 Network Intrusion Analysis Practice Question
An analyst is reviewing PCAP and sees a TCP stream with a Wireshark filter 'tcp.stream eq 0'. The conversation shows an interactive shell session with commands like 'whoami' and 'ls'. This is most likely evidence of what?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Reverse shell
An interactive shell session over TCP indicates a reverse shell, allowing the attacker to execute commands remotely.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
DNS tunneling
Why it's wrong here
DNS tunneling uses DNS protocol.
- ✓
Reverse shell
Why this is correct
Reverse shell provides command-line access.
- ✗
SQL injection
Why it's wrong here
SQL injection uses database queries.
- ✗
ARP spoofing
Why it's wrong here
ARP spoofing manipulates ARP tables.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-201 practice question is part of Courseiva's free Cisco 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 200-201 exam.