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SSCP Practice Question: Based on the exhibit, which of the following best…

Network Topology
0 0 ACCEPT alllo * 0.0.0.0/010 840 ACCEPT tcp20 1680 ACCEPT tcp5 420 ACCEPT tcp0 0 DROP alleth0 * 0.0.0.0/0Refer to the exhibit.

Based on the exhibit, which of the following best describes the firewall configuration?

⚠ Common exam trap

The trap here is that candidates often overlook the implicit deny at the end of an ACL, assuming that only the listed permits exist and that all other traffic is allowed by default, rather than understanding that any traffic not explicitly permitted is dropped.

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

The firewall allows SSH, HTTP, and HTTPS from the internal subnet and drops all other traffic.

The exhibit shows an access control list (ACL) that explicitly permits TCP traffic on ports 22 (SSH), 80 (HTTP), and 443 (HTTPS) from the internal subnet (e.g., 192.168.1.0/24) to any destination, followed by an implicit deny all rule. This configuration allows only SSH, HTTP, and HTTPS from the internal subnet and drops all other traffic, matching option C.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • The firewall allows only loopback traffic.

    Why it's wrong here

    Loopback is allowed, but also traffic from internal subnet.

  • The firewall allows all traffic from the internal subnet.

    Why it's wrong here

    Only specific ports are allowed, not all traffic.

  • The firewall allows SSH, HTTP, and HTTPS from the internal subnet and drops all other traffic.

    Why this is correct

    The rules show ACCEPT for ports 22, 80, 443 from 10.0.0.0/24, and a final DROP all.

  • The firewall allows all traffic from external sources.

    Why it's wrong here

    The final rule drops all traffic not matching previous rules, including external.

Visual reference

Source Router + ACL permit 10.0.0.0/8 deny any Server 10.0.0.5 ✓ 192.168.1.1 ✗ dropped ACLs evaluate top-down; first match wins — implicit deny all at end

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This SSCP practice question is part of Courseiva's free ISC2 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 SSCP exam.