Under which condition is using the trial$-$and$-$error approach not advisable? $($Choose all that apply.$)$

You can undo changes easily.

A server or network device is live on the network.

You can$$t undo changes easily.

No data can be lost.

At which layer are problems restricted to one workstation likely to occur?

Data Link

Transport

Physical

Presentation

After implementing a solution, what$$s the next step?

Document the solution.

Test the solution.

Devise preventive measures.

Consider possible causes.

Which of the following can be used to prevent data loss during a power fluctuation or failure?

TDR

UPS

MIB

SNMP

Which of the following is an element of the information$-$gathering step in the problem$-$solving process? $($Choose all that apply.$)$

Find out whether the function ever worked.

Determine whether something has changed.

Compare current operation with a baseline.

Consider possible causes.