Which of the following is a default value for the tombstone lifetime for a new Active Directory forest?

Which of the following is a default value for the tombstone lifetime for a new Active Directory forest?

• 180 days
• 30 days
• 6 months
• 24 hours  

EXPLANATION

Tombstone lifetime is the amount of time a deleted directory object remains in storage before it is permanently deleted.  This value is unique in the forest.

For new Active Directory forests, the default Tombstone Lifetime (TSL) is 180 days.

While some may point out that the default value can be 60 days, this only is true for existing forests whose original forest root Domain Controller was created while running Windows Server 2003 R2 SP1 or earlier operating systems.  Certainly, at the time of this writing, nobody would be creating a new forest using Windows Server 2003 R2 SP1.

SOURCE

https://www.usmanghani.co/active-directory-tombstone-lifetime-value/             

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When two systems first connect using SSH they exchange their....

When two systems first connect using SSH they exchange their....

• Public key
• Private key
• Passphase
• Password      

EXPLANATION

When two systems first connect using SSH they exchange their public keys with each other.

SOURCE

https://help.ubuntu.com/community/SSH/OpenSSH/Keys         

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Which target attribute is used with links to force the web browser to open the link in a new tab or window?

Which target attribute is used with links to force the web browser to open the link in a new tab or window?

• _new
• _reload
• _top
• _blank               

EXPLANATION

The target attribute specifies where the linked document will open when the link is clicked. The default is the current window. If target="_blank", the linked document will open in a new tab or (on older browsers) a new window.  

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In which layer of the OSI model does the ICA protocol from Citrix operate?

In which layer of the OSI model does the ICA protocol from Citrix operate?

• Transport
• Application
• Presentation
• Physical               

EXPLANATION

 The Independent Computing Architecture (ICA) protocol operates at the presentation layer of the OSI model, that is, the 6th layer. ICA is a Windows presentation services protocol from Citrix that provides the foundation for turning any client device-thin or fat-into the ultimate thin client. In the case of the ICA protocol, the 6th layer or the presentation layer is responsible for making sure the data can be presented to the application layer, in other words, the presentation layer prepares/formats the data making it ready to be passed up to the application layer.

SOURCE

http://s3.amazonaws.com/legacy.icmp/additional/ica_acceleration_0709a.pdf

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In a ISA type system, what DMA channel was always assigned to the system board?

In a ISA type system, what DMA channel was always assigned to the system board?

• 3
• 0
• 7
• 5               

EXPLANATION

http://www.pchell.com/hardware/irqs.shtml

SOURCE

http://www.pchell.com/hardware/irqs.shtml

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What international standard describes requirements for an information security management system (ISMS)?

What international standard describes requirements for an information security management system (ISMS)?

• GDPR
• ISO/IEC 27001
• ISO/IEC 27000
• ISO/IEC 27002  

EXPLANATION

"Standards aren’t the same as regulations and following a standard doesn’t guarantee that you’re within the relevant laws."

GDPR is a data privacy law/regulation created by the European Union (EU). It has an "extra-territorial effect" to protect data belonging to EU citizens and residents. This not only applies to EU-based organizations but also that in another region, which target or collect data related to people from European Economic Area (EEA).

ISO 27000 has an overview of ISMS and it contains terms and definitions.
ISO 27002 has guidelines and it's optional. However, there are useful tips related to the implementation of controls and requirements, which are provided in ISO 27001.

SOURCE

https://www.iso.org/isoiec-27001-information-security.html             

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On an RPM based Linux server what command would you use to update software from the command line

On an RPM based Linux server what command would you use to update software from the command line

• apt
• nano
• sup
• yum              

EXPLANATION

YUM allows automatic updates, package and dependency management, on RPM-based distributions. Like the Advanced Package Tool (APT) from Debian, YUM works with software repositories (collections of packages), which can be accessed locally[4] or over a network connection.

SOURCE

https://en.wikipedia.org/wiki/Yum_(software) 

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