IT Questions and Answers :)

Wednesday, October 14, 2020

What tool on a Mac laptop will close a non-responding application

What tool on a Mac laptop will close a non-responding application

  • Force Quit
  • iQuit
  • Sudo-kill
  • App Stop 
 
 
What tool on a Mac laptop will close a non-responding application

EXPLANATION

Force quit is the native Mac application that functions similar to Task Manager for stopping errant applications when the OS is running

SOURCE

https://support.apple.com/en-ca/HT201276
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Tuesday, September 29, 2020

What PowerShell Cmdlet would you use to update the Primary and Secondary DNS Server IP Addresses

What PowerShell Cmdlet would you use to update the Primary and Secondary DNS Server IP Addresses

  • Set-DNSServerAddress
  • Set-DNSClientServerAddress
  • New-DNSServerAddress
  • Set-DNSServerClientAddress 

 

What PowerShell Cmdlet would you use to update the Primary and Secondary DNS Server IP Addresses

EXPLANATION

This Cmdlet can also update the DNS Server IP Addresses on remove computers by creating a New-CimSession, then using the -CIMSession parameter

# These Commands will Update the NIC Interface called Ethernet




$Session = New-CimSession -ComputerName ComputerName
Set-DNSClientServerAddress -CimSession $Session -ServerAddresses 192.168.1.1,192.168.1.2 -InterfaceAlias *Ether*

You can list multiple IP's seperated by a comma, as well as multiple InterfaceAliases such as *ether*,*local*

SOURCE

https://blogs.technet.microsoft.com/heyscriptingguy/2014/08/30/powertip-use-powershell-to-set-primary-and-secondary-dns-server-addresses/



 

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Thursday, September 17, 2020

In PowerShell, what is the built-in alias for the ForEach-Object command ?

In PowerShell, what is the built-in alias for the ForEach-Object command ?

  • %
  • fe
  • ?

In PowerShell, what is the built-in alias for the ForEach-Object command ?

EXPLANATION

In order to cut down on the amount of code you have to write, you get handy alias such as:

% - ForEach-Object
? - Where-Object

It just makes coding that much easier but can reduce the understandability of the code. 

SOURCE

 

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Wednesday, September 16, 2020

To what bridge on the motherboard is the CPU connected?

To what bridge on the motherboard is the CPU connected?

  • Southbridge
  • Northbridge
  • Eastbridge
  • Westbridge


To what bridge on the motherboard is the CPU connected?

EXPLANATION

The Northbridge is one of two chips in the chipset architecture on a PC motherboard. The second chip is called Southbridge.
Northbridge is connected directly to the CPU via the FSB (front-side bus) and is responsible for tasks that require the highest performance. Also RAM (and integrated graphics) is located on the Northbridge.

For more detailed information check the source.

SOURCE

https://en.wikipedia.org/wiki/Northbridge_(computing)
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Tuesday, September 15, 2020

The convergence of traditional audio-video systems and high-bandwidth, low latency networking is know as what?

The convergence of traditional audio-video systems and high-bandwidth, low latency networking is know as what?

  • AV Over IP
  • Mesh AV
  • HD BASE-T
  • AV Over Fiber 

EXPLANATION

AV over IP uses existing or additional networking infrastructure to transport encoded AV streams from source to destination without requiring costly dedicated AV cabling and switching equipment.
This permits organizations to leverage their existing equipment and cabling often without significant modification.

SOURCE

https://campustechnology.com/articles/2017/03/01/an-introduction-to-av-over-ip.aspx
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Monday, September 14, 2020

Which of these is NOT a FSMO Role

Which of these is NOT a FSMO Role

  • RID Master
  • PDC Emulator
  • Forest Master
  • Schema Master 

 

EXPLANATION

There are 5 FSMO roles in Active Directory:
Schema Master
Domain Naming Master
RID Master
PDC Emulator
Infrastructure master

https://support.microsoft.com/en-gb/help/197132/active-directory-fsmo-roles-in-windows

SOURCE

https://support.microsoft.com/en-gb/help/197132/active-directory-fsmo-roles-in-windows
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Thursday, September 10, 2020

If I twist the pairs as close as I can to the tip of an Ethernet connector, what am I reducing?

If I twist the pairs as close as I can to the tip of an Ethernet connector, what am I reducing?

  • Power Redundancy
  • Electromagnetic Radiation
  • Mold Buildup
  • Heat Dissipation 
If I twist the pairs as close as I can to the tip of an Ethernet connector, what am I reducing?

  EXPLANATION

Twisted pair cabling is a type of wiring in which two conductors of a single circuit are twisted together for the purposes of improving electromagnetic compatibility. Compared to a single conductor or an untwisted balanced pair, a twisted pair reduces electromagnetic radiation from the pair and cross-talk between neighboring pairs and improves rejection of external electromagnetic interference.

SOURCE

https://en.wikipedia.org/wiki/Twisted_pair
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