20+ practice questions focused on Network and Communications Security — one of the most tested topics on the Systems Security Certified Practitioner SSCP exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Network and Communications Security PracticeDuring a wireless penetration test, an attacker captures the four-way handshake of a WPA2-PSK network and attempts to crack the passphrase offline. Which attack is the attacker likely using?
Explanation: In the given scenario, the attacker captures the four-way handshake of a WPA2-PSK network. The most likely method to capture such a handshake is an evil twin attack, where the attacker sets up a rogue access point impersonating a legitimate network. Once a client connects to the rogue AP, the attacker captures the handshake and can then attempt to crack the passphrase offline using dictionary or brute-force attacks.
An organization wants to deploy a firewall that can inspect the payload of application-layer protocols such as HTTP and FTP, and make access decisions based on application data. Which type of firewall best meets this requirement?
Explanation: An application proxy firewall operates at the application layer (Layer 7), acting as an intermediary that fully understands protocols like HTTP and FTP. It terminates the client connection, inspects the payload, and makes access decisions based on application data, which meets the requirement to inspect application-layer protocols.
Which protocol is used to securely transfer files over a network and operates on TCP port 22?
Explanation: SSH (Secure Shell) is the correct answer because it is the protocol that provides secure, encrypted communication over TCP port 22. While SSH is commonly used for remote command-line access, it also supports secure file transfer through its subsystems, such as SFTP and SCP. The question asks for the protocol that securely transfers files over a network on port 22, and SSH is the foundational protocol that enables this secure transfer. SFTP, although it also uses port 22, is a file transfer protocol that runs over SSH, but the question specifically asks for the protocol that operates on port 22, which is SSH itself.
An organization deploys a firewall that examines the entire packet, including application-layer data, and can block specific commands or content. Which type of firewall is this?
Explanation: An application proxy firewall operates at the application layer (Layer 7) and examines the entire packet, including application-layer data. It can understand specific protocols like HTTP, FTP, and SMTP, and can block specific commands or content based on configured policies. This deep inspection distinguishes it from stateful and stateless firewalls.
In IPsec VPNs, which protocol provides authentication and encryption of the entire IP packet, including the IP header, in tunnel mode?
Explanation: ESP (Encapsulating Security Payload) is the IPsec protocol that provides both confidentiality (encryption) and authentication for the entire IP packet in tunnel mode. In tunnel mode, ESP encapsulates the original IP packet—including its header—inside a new IP packet, encrypting the payload and optionally authenticating it via HMAC. AH, by contrast, only provides authentication and integrity, not encryption. Therefore, ESP is the correct answer.
+15 more Network and Communications Security questions available
Practice all Network and Communications Security questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Network and Communications Security. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Network and Communications Security questions on the SSCP frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Network and Communications Security is tested as part of the Systems Security Certified Practitioner SSCP blueprint. Practicing with targeted Network and Communications Security questions ensures you can handle any format or difficulty that appears.
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Difficulty is subjective, but Network and Communications Security is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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