ITForMe Beta Sign in
NET+ N10-009 V9 Network troubleshooting Branch services troubleshooting project · 1 of 2 Runs in your browser · no setup Original practice · Review pending

Restore branch addressing and name resolution

Resolve a support ticket with bounded switch commands and preserve a reviewable change record.

Estimated22 min
DifficultyIntermediate
Points16
Optional changed-fault follow-up

Optional changed-fault follow-up. Waiting about 14 days can reduce immediate recall, but ITForMe does not schedule or verify the interval. Completion is not delayed-retention evidence or readiness timing.

Open the optional changed incident →
Scenario brief

Fictional Pine Harbor Clinic opened a small records office. New clients on the Records VLAN cannot obtain a lease or resolve records.pineharbor.test. One statically configured test client still reaches the local gateway and the approved DHCP/DNS server. Change CHG-204 authorizes only the smallest correction supported by the evidence. Keep a rollback path and attach before-and-after proof to the ticket.

Content record

Original practice · Review pending

Mapped to CompTIA N10-009 objectives · Internal validation 2026-10-05 · Original ITForMe practice mapped to published objectives; not an official exam question. A named independent subject-matter expert has not yet verified the question and answer key.

Community review →
5.1Explain the troubleshooting methodology. 5.3Given a scenario, troubleshoot common issues with network services. 5.5Given a scenario, use the appropriate tool or protocol to solve networking issues. 2.2Given a scenario, configure switching technologies and features. 3.4Given a scenario, implement IPv4 and IPv6 network services. 3.1Explain the purpose of organizational processes and procedures.
Show review record and official sources

Method: Mapped to N10-009 objectives 2.2, 3.1, 3.4, 5.1, 5.3, and 5.5. The DHCP-relay behavior, bounded IOS-style commands, evidence limits, minimum-change contract, verification, and rollback record were checked against RFC 2131 and Cisco DHCP-relay documentation.

Current-profile check: 2026-08-12 · Next review due 2027-02-08

01

Inspect the evidence

Use only the information provided to complete the tasks.

Ticket and approved service plan

table
ComponentApproved valueConstraint
Records VLAN40 · 192.0.2.64/27Gateway 192.0.2.65
DHCP and internal DNS198.51.100.18Reached through the routed core
Access pathGi1/0/14 access VLAN 40Uplink Gi1/0/24 already carries VLAN 40
RollbackRestore the captured helper lineOnly if the correction causes new impact

If columns are offscreen, scroll sideways or focus the table and use arrow keys.

Client and service checks

code
RECORDS-LT07 after ipconfig /release and /renew
  Autoconfiguration IPv4 Address: 169.254.44.17/16
  DHCP Server: none

STATIC-TEST (192.0.2.94/27, gateway 192.0.2.65)
  ping 192.0.2.65 ................ PASS
  ping 198.51.100.18 ............. PASS
  nslookup records.pineharbor.test 198.51.100.18
    Name: records.pineharbor.test
    Address: 198.51.100.44

BR-EDGE-01 observations

code
show interfaces gi1/0/14 switchport
  Operational Mode: static access
  Access Mode VLAN: 40
show interfaces trunk
  Gi1/0/24 allowed and active: 10,40,99
show running-config interface vlan 40
  interface Vlan40
   ip address 192.0.2.65 255.255.255.224
   ip helper-address 198.51.100.12
   no shutdown
CMDB: 198.51.100.12 was retired; CHG-204 names 198.51.100.18.
02

Complete the response

Partial credit is available for matching, ordering, and multi-select tasks.

Changes will save automatically.
01
matching

Match each observation to the narrowest conclusion it supports.

4 pts
Need a hint?

Start with the row and choice that have the most distinctive purpose, then use that pair to narrow the rest.

Show another hint

For each remaining pair, explain the relationship in one sentence before selecting it.

02
switch cli

Use the isolated BR-EDGE-01 console to inspect the current state, apply only the authorized DHCP-relay correction, verify the resulting configuration, and save it.

5 pts
AtlasOS 4.2 training simulatorBounded IOS-style practice syntax
Browser simulator
Isolated configuration model—not a vendor emulator or packet simulator. Commands change only this published scenario state.
Need a hint?

Inspect the current state with show commands before changing configuration; enter ? to see available commands.

Show another hint

Change the smallest required scope, verify the resulting state, and save only when the scenario calls for it.

03
multi select

Select the FOUR post-change observations needed to close the client-service ticket.

4 pts
Need a hint?

Evaluate each option independently against the scenario evidence instead of treating the list as one decision.

Show another hint

Choose only options that directly satisfy the prompt; being generally true is not enough.

04
single choice

Which closeout record best preserves evidence and a bounded rollback path?

3 pts
Need a hint?

Restate the exact outcome or failure the prompt asks about before comparing choices.

Show another hint

Eliminate choices that solve a nearby problem, change more than requested, or do not fit the evidence.

Ready to check your work?Unanswered tasks and matches earn no points. A partial submission is scored and saved in your history.
Persistent progress

Attempt history

Every submission is retained. Starting another attempt never replaces or unlocks the previous one.

No attempts yet

Your first submitted score and detailed answer review will appear here.

Community quality control

Question or answer look wrong?

Proposals and votes help staff prioritize review. They never change the scoring key automatically.

Full review queue →
No community corrections yet

Be the first to flag unclear wording, an answer-key issue, or a source that needs another look.

Propose a correction