Two administrators update the same Active Directory user account at the same time while connected to two different domain controllers. What method does Active Directory replication use to determine what changes to make in the event of a conflict?

Two administrators update the same Active Directory user account at the same time while connected to two different domain controllers. What method does Active Directory replication use to determine what changes to make in the event of a conflict?

• USN - Update Sequence Number
• SID - Security Identifier
• Email to Administrator with links to available choices
• RID - Relative Identifier               

EXPLANATION

Active Directory replication does not depend on time to determine what changes need to be propagated. It relies instead on the use of update sequence numbers (USNs) that are assigned by a counter that is local to each domain controller. Because these USN counters are local, it is easy to ensure that they are reliable and never "run backward" (that is, decrease in value). The trade-off is that it is meaningless to compare a USN assigned on one domain controller to a USN assigned on a different domain controller.
More info here:

https://technet.microsoft.com/en-us/library/cc961798.aspx">https://technet.microsoft.com/en-...

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Which of the following is NOT in the same subnet as the other 3

Which of the following is NOT in the same subnet as the other 3

• 10.27.9.14/29
• 10.27.9.16/29
• 10.27.9.20/29
• 10.27.9.18/29 

 

EXPLANATION

In IP v4. The range is from 10.27.9.16 to 10.27.9.23 with a 29 bit subnet mask. 255.255.255.248

Giving a total of 8 hosts on the sunbet, although only 6 are usable.

SOURCE

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

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In macOS, what are the default numeric file permissions on a user home folder; /Users/username/?

In macOS, what are the default numeric file permissions on a user home folder; /Users/username/?

• 755
• 777
• 775
• 733 

EXPLANATION

By default, the permissions on a home folder are drwxr-xr-x or 755. This allows other users on the system access to the top level of the the home folder so that they can access the Public and Sites folders to read or send files to the owner. The main other folders (Desktop, Documents, etc) are locked to drwx------ so that only the owner has access.

SOURCE

http://www.macinstruct.com/node/415

 

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How do you search for text using the Nano text editor?

How do you search for text using the Nano text editor?

• Control + F
• Control + W
• Control + O
• Control + S

EXPLANATION

Rather than using 'F' for 'find' Nano uses 'W' for 'Where Is'.

SOURCE

https://wiki.gentoo.org/wiki/Nano/Basics_Guide

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Microsoft's HoloLens is what type of device?

Microsoft's HoloLens is what type of device?

Augmented reality

Machine learning

Virtual reality

Mixed reality 

 

 

EXPLANATION

Mixed reality (MR) not just overlays, but anchors virtual objects to real-world objects and allows the user to interact with combined virtual/real objects.

• Virtual reality (VR) immerses users in a fully artificial digital environment.
•   Augmented reality (AR) overlays virtual objects on the real-world environment with spatial registration that enables geometric persistence concerning placement and orientation within the real world. Prior technologies that overlaid data or images not spatially registered to real-world geometries are referred to as heads-up display technologies.

SOURCE

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

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