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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What type of RAID is RAID 2?

What type of RAID is RAID 2?

• Byte-level striping with dedicated parity.
• A striped set from a series of mirrored drives.
• Block-level striping with dedicated parity.
• Bit-level striping with dedicated Hamming-code parity. 

EXPLANATION

RAID 2
RAID 2 consists of bit-level striping with dedicated Hamming-code parity. All disk spindle rotation is synchronized and data is striped such that each sequential bit is on a different drive. Hamming-code parity is calculated across corresponding bits and stored on at least one parity drive. This level is of historical significance only; although it was used on some early machines (for example, the Thinking Machines CM-2), as of 2014 it is not used by any commercially available system.
RAID 2

SOURCE

https://en.wikipedia.org/wiki/Standard_RAID_levels#RAID_2 

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In Linux system, which command will print the output of log file in reverse ?

In Linux system, which command will print the output of log file in reverse ?

• less
• cat
• tac
• rcs 

 

EXPLANATION

Let's assume that we have a log file named "Letters" that contains: A B C D (in separate lines).
To view the content of the log file in Linux terminal, the command will be:

linux@machine:~$ sudo cat Letters

And we will get the output:
A
B
C
D

To view the content of the log file in reverse, the command will be:

linux@machine:~$ sudo tac Letters

And we will get the output:
D
C
B
A

SOURCE

https://www.tecmint.com/learn-linux-cat-command-and-tac-command/

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While working on an issue on a clients network you learn that you will be using the 1000BaseCX standard. What type of cable will you be using.

While working on an issue on a clients network you learn that you will be using the 1000BaseCX standard. What type of cable will you be using.

• CoreXtended Fiber
• Single-mode fiber
• Multimode fiber
• STP

EXPLANATION

The 1000BaseCX standard specifies Gigabit Ethernet over STP cabling.

1. Multi-mode Fiber is incorrect because 1000BaseSX and 1000BaseLX specify Gigabit Ethernet over two types of Multi-mode fiber.
2. Single-mode fiber is used with 100BaseFX standard.
3. As far as CoreXtended Fiber, there anin't no such animal.
   

SOURCE

http://www.thenetworkencyclopedia.com/entry/1000basecx/

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