What is the default Encryption Algorithm used by BitLocker in Windows?

What is the default Encryption Algorithm used by BitLocker in Windows?

• AES
• RSA
• Blowfish
• Triple DES

 

EXPLANATION

 BitLocker uses Advanced Encryption Standard (AES) as its encryption algorithm with configurable key lengths of 128 or 256 bits. The default encryption setting is AES-128, but the options are configurable by using Group Policy.

The common wisdom is that AES 128 and AES 256 actually offer about the same security. It would take so long to brute-force 128-bit AES encryption that 256-bit AES encryption doesn’t really offer a meaningful amount of additional security. For example, if it would take a quadrillion years to brute-force 128-bit AES, does it really matter that it might take even longer to brute-force 256-bit AES? For all realistic purposes, they’re equally secure.

But it’s not quite all that simple. The NSA requires 128-bit keys for data marked SECRET, while it requires 256-bit keys for data marked TOP SECRET. The NSA clearly considers 256-bit AES encryption more secure. Does a secretive government agency tasked with breaking encryption know something we don’t know, or is this just a case of silly government bureaucracy?

We aren’t qualified to give the final word on this. Agile Bits has a great in-depth look at the subject in their blog post about why they moved the 1Password password manager from 128-bit AES to 256-bit AES. The NSA apparently considers 256-bit AES encryption protection against future quantum computing technologies that could break encryption much more quickly.

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Which DFSR setting captures, compresses and communicates only file differences to replication partners?

Which DFSR setting captures, compresses and communicates only file differences to replication partners?

• Remote Differential Compression
• Binary Delta Compression
• Realtime Differential Compression
• Remote Delta Compression 

 EXPLANATION

Remote Differential Compression (RDC) is a client-server synchronization algorithm that allows the contents of two files to be synchronized by communicating only the differences between them. It was introduced with Microsoft Windows Server 2003 R2 and is included with later Windows client and server operating systems.

SOURCE

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

 

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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 

 

 

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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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 

 

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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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
• ?
• ^ 

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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To what bridge on the motherboard is the CPU connected?

To what bridge on the motherboard is the CPU connected?

• Southbridge
• Northbridge
• Eastbridge
• Westbridge

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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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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