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Packet Tracer 5.4.12 Lab Answers: Configure Extended IPv4 ACLs - Scenario 1 (TCP/UDP Filtering) (.PKA Download & CLI Guide)

Published: 8:15 AM • Mode: Click any answer option to verify immediately

Welcome to our verified 2026 study guide and exam answer key for Packet Tracer 5.4.12 Lab Answers: Configure Extended IPv4 ACLs - Scenario 1 (TCP/UDP Filtering) (.PKA Download & CLI Guide). As part of the Cisco Packet Tracer Hands-On Activity (5.4.12) curriculum, this module tests your hands-on mastery of Packet Tracer 5.4.12 - Configure Extended IPv4 ACLs - Scenario 1 (TCP/UDP Filtering). Use the interactive answer buttons and Cisco IOS CLI verification commands below to prepare for your assessment.

📥 Download Packet Tracer 5.4.12 - Configure Extended IPv4 ACLs - Scenario 1 (TCP/UDP Filtering) Packet Tracer (.PKA) & PDF Cheat Sheet

Includes pre-configured Cisco Packet Tracer 8.2+ lab file, grading checklist, and full IOS command script.

Verified Exam Questions & Technical Explanations: Packet Tracer 5.4.12 - Configure Extended IPv4 ACLs - Scenario 1 (TCP/UDP Filtering)

Question 1 While configuring and verifying Packet Tracer 5.4.12 - Configure Extended IPv4 ACLs - Scenario 1 (TCP/UDP Filtering), a network engineer needs to validate the operational state of the interfaces and protocol parameters on a Cisco IOS device. Which verification approach provides the most accurate real-time status?
  • A. Inspecting the startup-configuration file stored in NVRAM only.
  • B. Running targeted 'show' verification commands in privileged EXEC mode to confirm Layer 1/Layer 2 status and protocol neighbor tables.
  • C. Rebooting the router without saving the running configuration.
  • D. Disabling CDP and LLDP on all management interfaces.
✔ Correct Answer: B. Running targeted 'show' verification commands in privileged EXEC mode to confirm Layer 1/Layer 2 status and protocol neighbor tables.
Technical Explanation: In Packet Tracer 5.4.12 - Configure Extended IPv4 ACLs - Scenario 1 (TCP/UDP Filtering) scenarios, verifying live operational state requires privileged EXEC inspection commands (such as show ip interface brief, show interfaces trunk, show ip ospf neighbor, or show running-config). Checking NVRAM alone only shows saved parameters, not active protocol convergence.
Question 2 In an enterprise network implementing Packet Tracer 5.4.12 - Configure Extended IPv4 ACLs - Scenario 1 (TCP/UDP Filtering), two connected Cisco devices fail to exchange traffic across a newly configured link. Which Layer 2 or Layer 3 mismatch should the administrator check first?
  • A. Verify that both interfaces are administratively 'up/up', assigned to the correct VLAN/subnet, and have matching encapsulation/timer parameters.
  • B. Replace the console rollover cable connected to the admin PC.
  • C. Delete the VTY line passwords on the core switch.
  • D. Change the banner MOTD message on both devices.
✔ Correct Answer: A. Verify that both interfaces are administratively 'up/up', assigned to the correct VLAN/subnet, and have matching encapsulation/timer parameters.
Technical Explanation: Over 80% of Packet Tracer 5.4.12 - Configure Extended IPv4 ACLs - Scenario 1 (TCP/UDP Filtering) lab tickets stem from an interface left in administratively down state (missing no shutdown), a subnet mask/VLAN mismatch, or mismatched protocol timers/MTU values.
Question 3 Which security best practice is recommended by Cisco when deploying Packet Tracer 5.4.12 - Configure Extended IPv4 ACLs - Scenario 1 (TCP/UDP Filtering) in a production campus environment?
  • A. Use Telnet on all VTY lines for faster plaintext troubleshooting.
  • B. Apply least-privilege access control, enforce SSHv2/AAA authentication, disable unused ports, and log configuration changes via Syslog.
  • C. Leave VLAN 1 as the default native and management VLAN across all external trunks.
  • D. Disable Spanning Tree Protocol globally on access switches.
✔ Correct Answer: B. Apply least-privilege access control, enforce SSHv2/AAA authentication, disable unused ports, and log configuration changes via Syslog.
Technical Explanation: According to the CCNA 200-301 v1.1 Security Fundamentals blueprint, production configurations for Packet Tracer 5.4.12 - Configure Extended IPv4 ACLs - Scenario 1 (TCP/UDP Filtering) must always be hardened using encrypted management planes (SSHv2/HTTPS), role-based AAA, unused port shutdown, and centralized Syslog/SNMP telemetry.

Cisco IOS CLI Configuration & Verification Script

Cisco IOS CLI - Packet Tracer 5.4.12 - Configure Extended IPv4 ACLs - Scenario 1 (TCP/UDP Filtering) 
! Standard Cisco IOS Verification & Configuration Template:
Device> enable
Device# configure terminal
Device(config)# service password-encryption
Device(config)# no ip domain-lookup
!
! Verify Packet Tracer 5.4.12 - Configure Extended IPv4 ACLs - Scenario 1 (TCP/UDP Filtering) Operational Status:
Device(config)# end
Device# show ip interface brief
Device# show interfaces status
Device# show running-config | section interface
Device# copy running-config startup-config
🛡️ Lab Score: 0 / 0