Technical Interview questions for New Hire

User calls in and complains that her computer and network is running very slow. How would you go about troubleshooting it?

Questions by nasiraziz1

Showing Answers 1 - 4 of 4 Answers


  • May 27th, 2013

First assure customer that will do everything I can to help resolve the issue
>>Ask the following probing questions(open ended)
>Since when, any recent changes to the system/location/CPE(Customer premises equipment)?
>When does the problem occur. All the times/all websites?
>Torrent/download clients used/not used, if yes than exit and check...
>Multiple browsers tried/not tried
>If problem is only found on one browser, clear cache/cookies....
>If problem persists on multiple browsers. Check if other systems work fine
>Wired connection tried/not tried
>If problem only occurs in wireless connection change the position of antenna/ change the channel in wireless settings(6, 11 preferred)
>Check MTU(Maximum Transmission unit-Usually default numbers 1454 / 1492 used, depends on Internet Service Provider) setting in the router/modem
>If even than problem persists tell customer to shut down the computer for today and pray for a better connection tomorrow...just kidding
>If problem persists reset the modem and check/Check for bad weather/Virus, spyware and check with another system.
>If problem still persists, suspect equipment line issue, further steps depend on the process..need for line test etc....

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  • Jun 3rd, 2013

Not enough hard disk space.
Left over programs and bad files or Data Corruption. (Defrag to resolve)
Missing Windows updates / Outdated drivers.
Computer is overheating.
Corrupt OS.
Bad Hardware.

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  • Sep 14th, 2013

Delete temp file,internet temporary file,cookies,history, run the disk cleaner.
may pc slow by installing Antivirus also,
may be virus also,scan by good antivirus,
may malware attack on the PC, scan by anti malware byte.
not store more than 25 mb data on desktop.
may bad sector on hard disk,
may be data scatter, run the defragmentation tools

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  • Sep 2nd, 2014

The 2 previous answers posted show how not to troubleshoot.

To effectively troubleshoot anything, you first get the scope of the problem. "Are you the only one having the problem"? If no, then you don't need to troubleshoot layer 7 stuff. "When did it start?" If there was a clear indication that it was fast, but is now slow, look into recent network changes "Do you see the same symptoms in a different browser?" "Do you see the same symptoms on different webpages, or just specific ones?"

These kind of questions will help you know where to start taking action, not just taking random actions like the shot-gun approach.

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