Which of the following is the purpose of a private VLAN (PVLAN) in Cisco?

Which of the following is the purpose of a private VLAN (PVLAN) in Cisco?

• A secured VLAN with no outside access.
• A VLAN with only one port or interface assigned to it.
• A VLAN that is only configured on a single switch.
• Allows access to a resource (like the internet), but not between access ports. 

EXPLANATION

A private VLAN would be used in an application like a motel. There would be certain port(s) that would allow access to the internet, DNS servers, etc. But the access ports that may connect to each motel room would be isolated from each other. This means that room one can't see room two or the other way around, but they can both get to some servers or the internet.
You could have a VLAN on only one switch, but this is not a private VLAN.

A VLAN with only one port or interface is also not a private VLAN and having only one member would mean it is basically useless.
While private VLANS improve security it is not generally the same as having a VLAN that can't connect outside of the VLAN.

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What tool can be used to collect error logs from Microsoft Outlook?

What tool can be used to collect error logs from Microsoft Outlook?

• Event Viewer
• Performance Monitor
• SaRA
• setup.exe /repair 

EXPLANATION

The Microsoft Support and Recovery Assistant (SaRa)uses advanced diagnostics to figure out what's wrong and offers the best solution for the identified problem.
It can currently fix Office, Office 365, or Outlook problems. If the Microsoft Support and Recovery Assistant can't fix a problem for you, it will suggest next steps and help you get in touch with Microsoft support.

SOURCE

https://support.office.com/en-us/article/about-the-microsoft-support-and-recovery-assistant-e90bb691-c2a7-4697-a94f-88836856c72f

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In macOS, what key strokes do you use to show & hide invisible folders?

In macOS, what key strokes do you use to show & hide invisible folders?

• control+command+space
• option+command+period
• shift+option+i
• shift+command+period 

EXPLANATION

press "shift+command+period to show the invisible system folders on macOS devices.

SOURCE

http://osxdaily.com/2018/02/12/show-hidden-files-mac-keyboard-shortcut/

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What kind of information about your e-mail environment is not stored in DNS?

What kind of information about your e-mail environment is not stored in DNS?

• Certificate expiration date
• SPF record
• DKIM selector
• MX 

 

EXPLANATION

Autodiscover records, MX records and DKIM selectors are provided in de public DNS zone for each domain. The expiration date for a certificate is displayed on the certificate itself.

SOURCE

https://nl.wikipedia.org/wiki/Domain_Name_System

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From a hardware perspective what is the default paging file size requirements for Exchange 2019

From a hardware perspective what is the default paging file size requirements for Exchange 2019

• 75% of installed memory
• 25% of installed memory
• 10% of installed memory
• 50% of installed memory 

EXPLANATION

When installing Exchange 2019 it is required to set the paging file size to 25% of the installed memory.

SOURCE

https://docs.microsoft.com/en-us/exchange/plan-and-deploy/system-requirements?view=exchserver-2019

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