You need to encrypt and compress your backups before replicating them off site. Which is best practice, compress then encrypt, or encrypt then compress?

You need to encrypt and compress your backups before replicating them off site. Which is best practice, compress then encrypt, or encrypt then compress?

• Neither!
• Doesn't matter!
• Encrypt first!
• Compress first! 

EXPLANATION

If you encrypt the data first, it will be randomized and unintelligible by your compression application which need to compress the data in a logical format.

Compressing then encrypting is the way to go.

SOURCE

https://stackoverflow.com/questions/4676095/when-compressing-and-encrypting-should-i-compress-first-or-encrypt-first

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In Active Directory, what would a RSOP report tell you?

In Active Directory, what would a RSOP report tell you?

• Remote System Operation Protocol
• Random State Oscillation Period
• Removal Strategy for Outside People
• Resultant Set Of Policy 

EXPLANATION

 A Resultant Set of Policy (RSOP) is a report of all Group Policy settings within Active Directory that shows how those settings can affect a network, or how existing Group Policy Objects (GPOs) affect various combinations of users and computers when the local security policy is applied.

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Which of the following is implemented exclusively as firmware?

Which of the following is implemented exclusively as firmware?

• BIOS
• Linux
• Database
• Wi-Fi 

 

EXPLANATION

Firmware is software that is permanently programmed into a device's read-only memory. Basic Input/Output System (BIOS) is an example of firmware.

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Which of the following RegEx character sets does the '\w' meta-character most closely represent in Perl-compatible Regular Expression implementations?

Which of the following RegEx character sets does the '\w' meta-character most closely represent in Perl-compatible Regular Expression implementations?

• [a-zA-Z0-9_]
• [a-zA-Z]
• [a-zA-Z0-9]
• [a-zA-Z_] 

 

EXPLANATION

The "word" meta-character \w in RegEx will match the full alpha-numeric range, basically the full alphabet as well as number characters, and includes underscores.

Note that it matches more alphabet characters than the standard a through z: pretty much any alphabet character, such as 'ñ', also match.

http://www.w3schools.com/jsref/jsref_regexp_wordchar.asp

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What is the primary difference between LED and an LCD monitor?

What is the primary difference between LED and an LCD monitor?

• price
• Backlighting source
• Doesn't last as long as plasma displays
• screen size 

 

EXPLANATION

LCD
LCD is the abbreviation of Liquid Crystal display. There are two layers of glass in this technology that are joined together with liquid crystals in between. These crystals help pass or block the light. However, crystals do not produce any light and it comes through fluorescent lamps (CCFL) situated at the back of the screen.
LED
The technology in LED TV’s is much the same with the difference being the source of light at the back of the screen. Whereas it is CCFL in the case of LCD, there is Light emitting Diodes (LED’s) in the case of LED TV’s.
http://www.differencebetween.com/difference-between-lcd-and-vs-led-monitor/
http://www.diffen.com/difference/LCD_TV_vs_LED_TV

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Where does Cryptolocker execute from on a Windows OS?

Where does Cryptolocker execute from on a Windows OS?

• Desktop
• C:\Programfiles
• C:\Windows\System32
• C:\Users\*User*\AppData\Local 

EXPLANATION

Cryptolocker runs from App Data Local and starts locking each file from A to Z then works on mapped drives from A to Z.

SOURCE

https://malwaretips.com/blogs/remove-cryptolocker-virus/

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What is the default port used by Postfix?

What is the default port used by Postfix?

• 25
• 45
• 37
• 20 

 

EXPLANATION

Postfix is an open source mail transfer agent (MTA) that is used to route and deliver emails. Postfix is the alternate of widely
used Sendmail MTA. Postfix uses port number 25 (SMTP) by default.

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