drw-r-x-wx 2 terry staff 4096 Mar 10 14:29 Secret <== Based on permissions assigned to user (terry), group (staff), and other, which non-root users have permission to remove files in directory "Secret?"

drw-r-x-wx 2 terry staff 4096 Mar 10 14:29 Secret <== Based on permissions assigned to user (terry), group (staff), and other, which non-root users have permission to remove files in directory "Secret?"

• Both owner "terry" and group "staff" members
• Any user in "other"
• The owner, user "terry"
• Any member of group "staff" 

EXPLANATION

To remove a file, a user needs write and access (execute) permission on the directory. That is, -wx at minimum.
The user does not need read permission on the directory to remove a file if the name is known, but read permission on the directory would be required to discover the filename, for example, with "ls".
User "terry", the owner, does not have access to the directory (x is absent for user).

SOURCE

https://www.hackinglinuxexposed.com/articles/20030424.html

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Which WMI class can you use to determine a system's last bootup time?

Which WMI class can you use to determine a system's last bootup time?

• Win32_OperatingSystem
• Win32_BootEvent
• Win32_ComputerSystem
• Win32_BIOS             

EXPLANATION

Win32_OperatingSystem includes a property called LastBootUpTime, which is the time when the system last booted up.
Win32_ComputerSystem and Win32_BIOS do not have any properties that can be used for this.
Win32_BootEvent does not exist.

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Which encoding would allow you to transmit binary data over an ASCII-only communications channel?

Which encoding would allow you to transmit binary data over an ASCII-only communications channel?

• Unicode
• bytecode
• Base64
• ISO-8851-1 

 

EXPLANATION

Base64 is a format that encodes arbitrary binary data into ASCII characters (letters, digits and limited punctuation).  These characters then can be decoded back into binary at the other end.
  This allows transmitting binary data over channels that normally only allow ASCII (such as email or display terminals).  Base64 takes up 1/3 more space than the equivalent binary format.

SOURCE

https://en.wikipedia.org/wiki/Base64

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In SCCM, which of the following can build and capture and subsequently deploy an OS image from a set of operating system installation files, install additional applications during the build-phase and capture and restore user state information?

In SCCM, which of the following can build and capture and subsequently deploy an OS image from a set of operating system installation files, install additional applications during the build-phase and capture and restore user state information?

• Task Sequence
• Task Scheduler
• Task Manager
• Tasklist 

 

EXPLANATION

System Center Configuration Manager uses task sequences to automatically install an operating system image on a destination computer. You create a task sequence that references a boot image used to start the destination computer, the operating system image that you want to install on the destination computer, and any other additional content, such as other applications or software updates, that

SOURCE

https://technet.microsoft.com/en-us/library/bb693631.aspx

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In order to SEND email reliably, a mailserver MUST meet the following DNS requirement:

In order to SEND email reliably, a mailserver MUST meet the following DNS requirement:

• SPF and DKIM records
• A valid MX record
• A PTR record which matches the email domain
• A valid PTR record 

 

EXPLANATION

A sending mailserver shall have a valid PTR (reverse DNS lookup) record for its public IP address. That is, the PTR record must return the same IP address if submitted to a DNS lookup. If this is not the case, the recipient is likely to reject the mail as possible spam. (If IPv6 is used this also applies here, a point often overlooked)

MX records determine which computers accept inbound mail for

SOURCE

https://www.studiocoast.com.au/knowledgebase/194/email/support.aspx

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