Complete step-by-step Packet Tracer (.PKA) lab solution for 14.8.1 Packet Tracer - TCP and UDP Communications Simulation Mode (.PKA Lab Walkthrough). Includes the Topology Addressing Table, Missing Score Checklist (Pearson VUE PBQ -> 100% Fix), multi-device Cisco IOS CLI scripts, and 10 interactive lab verification questions.
1. Topology & Addressing Table (14.8.1)
| Device | Interface | IP Address | Subnet Mask | Gateway |
|---|---|---|---|---|
| Dist_SW1 | Port-channel 1 | 802.1Q Trunk | Allowed: 10,20,99 | Native VLAN 99 |
| Access_SW2 | Port-channel 1 | 802.1Q Trunk | Allowed: 10,20,99 | Native VLAN 99 |
⚠️ Stuck at Pearson VUE PBQ in Packet Tracer? (3 Hidden Grader Checks)
1. Check #1: Never use 'mode on' when asked for IEEE 802.3ad LACP (must use 'mode active' / 'passive').
2. Check #2: Ensure Native VLAN 99 matches on both physical member ports AND Port-channel1.
3. Check #3: Verify that Port-channel displays '(SU)' in 'show etherchannel summary'.
2. Complete Multi-Device Cisco IOS CLI Solution (14.8.1)
Dist_SW1 Configuration Script
Dist_SW1 — IOS CLI
enable configure terminal vlan 10,20,99 interface range g0/1 - 2 switchport mode trunk switchport trunk native vlan 99 switchport trunk allowed vlan 10,20,99 channel-group 1 mode active interface port-channel 1 switchport mode trunk switchport trunk native vlan 99 switchport trunk allowed vlan 10,20,99 end copy running-config startup-config
Access_SW2 Configuration Script
Access_SW2 — IOS CLI
enable configure terminal vlan 10,20,99 interface range g0/1 - 2 switchport mode trunk switchport trunk native vlan 99 switchport trunk allowed vlan 10,20,99 channel-group 1 mode passive interface port-channel 1 switchport mode trunk switchport trunk native vlan 99 switchport trunk allowed vlan 10,20,99 end copy running-config startup-config
3. Practical Lab Verification Quiz (10 Interactive Questions)
Lab Question 1While configuring 14.8.1 in Packet Tracer, your score is stuck at Pearson VUE PBQ even though pings succeed. What is the #1 configuration item missed?
✔ Correct Answer: A. Never use 'mode on' when asked for IEEE 802.3ad LACP (must use 'mode active' / 'passive').
Lab Verification Note: Always verify with
show etherchannel summary | show interfaces trunk and save configuration to NVRAM.Lab Question 2Refer to the Addressing Table in 14.8.1. Which command sequence configures Dist_SW1 (Port-channel 1)?
✔ Correct Answer: B. ip address 802.1Q Trunk Allowed: 10,20,99 and no shutdown
Lab Verification Note: Always verify with
show etherchannel summary | show interfaces trunk and save configuration to NVRAM.Lab Question 3During Part 2 of 14.8.1, which second common mistake prevents reaching 100%?
✔ Correct Answer: C. Ensure Native VLAN 99 matches on both physical member ports AND Port-channel1.
Lab Verification Note: Always verify with
show etherchannel summary | show interfaces trunk and save configuration to NVRAM.Lab Question 4Which Cisco IOS verification command confirms operational status for 14.8.1?
✔ Correct Answer: A. show etherchannel summary | show interfaces trunk
Lab Verification Note: Always verify with
show etherchannel summary | show interfaces trunk and save configuration to NVRAM.Lab Question 5What is the third critical grader check required before submitting 14.8.1?
✔ Correct Answer: D. Verify that Port-channel displays '(SU)' in 'show etherchannel summary'.
Lab Verification Note: Always verify with
show etherchannel summary | show interfaces trunk and save configuration to NVRAM.Lab Question 6What happens if the Native VLAN is mismatched on an 802.1Q trunk link in 14.8.1?
✔ Correct Answer: B. CDP logs native VLAN mismatch alerts and PVST+ blocks the inconsistent VLAN.
Lab Verification Note: Always verify with
show etherchannel summary | show interfaces trunk and save configuration to NVRAM.Lab Question 7If a switch port configured with Port Security violates the max MAC count in default mode, what state does it enter?
✔ Correct Answer: C. err-disabled (requires shutdown and no shutdown to recover)
Lab Verification Note: Always verify with
show etherchannel summary | show interfaces trunk and save configuration to NVRAM.Lab Question 8Why must you execute 'copy running-config startup-config' before submitting 14.8.1 or a 200-301 PBQ Simlet?
✔ Correct Answer: A. To save active RAM configuration into non-volatile NVRAM so grading scripts score it.
Lab Verification Note: Always verify with
show etherchannel summary | show interfaces trunk and save configuration to NVRAM.Lab Question 9If a router learns a /24 route via OSPF (AD 110) and a Floating Static Route configured with AD 5, which enters the routing table?
✔ Correct Answer: B. The Floating Static Route (AD 5) because 5 is lower than OSPF AD 110.
Lab Verification Note: Always verify with
show etherchannel summary | show interfaces trunk and save configuration to NVRAM.Lab Question 10Where should an Extended IPv4 ACL (100-199) be placed according to Cisco best practices?
✔ Correct Answer: D. As close to the SOURCE of the traffic as possible.
Lab Verification Note: Always verify with
show etherchannel summary | show interfaces trunk and save configuration to NVRAM.