What type of RAID is RAID-Z?

What type of RAID is RAID-Z?

• Hardware RAID
• Software RAID
• not a RAID
• Virtual RAID 

 

EXPLANATION

RAID-Z is a software raid achieved by

data/parity distribution scheme like RAID-5, but uses dynamic stripe width: every block is its own RAID stripe. It is primarily used by ZFS file system.
https://en.wikipedia.org/wiki/ZFS#RAID-Z

SOURCE

https://en.wikipedia.org/wiki/ZFS#RAID-Z

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In computing, what is an octet? Checkmark A byte that is 8 bits A group of 8x8 bits A byte that is 80 bits A short string of coding

In computing, what is an octet?

• A byte that is 8 bits
• A group of 8x8 bits
• A byte that is 80 bits
• A short string of coding

 

EXPLANATION

An octet is a byte, that is eight bits. This unit of digital information is often used in computing and telecommunications when the term byte might be ambiguous,
since historically there was no standard definition for the size of the byte. The usage of the old term octad(e) for 8 bits is no longer common today. (wiki)

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What is one of the primary weaknesses of symmetric cryptography?

What is one of the primary weaknesses of symmetric cryptography?

• Hard disk storage
• RAM memory requirement
• CPU processing speed
• Key Management 

EXPLANATION

Symmetric cryptography is usually fast and easy to implement. This is because encryption and decryption with a private key requires less complex computation than other types of cryptography. The significant disadvantage of symmetric encryption relate to the difficulties of managing the private key.
 

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Apple's Profile Manager is an example of what type of service?

Apple's Profile Manager is an example of what type of service?

• MDM
• ASM
• APPL
• DEP 

 

EXPLANATION

Apple's PRofile Manager is an example of a Mobile Device Management (MDM) service. Profile Manager can be used to control and distribute settings, apps and other content to Apple OSX and Apple iOS devices.

SOURCE

https://support.apple.com/profile-manager

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Which of the following characters designates a class in CSS?

Which of the following characters designates a class in CSS?

• #
• !
• .
• ~ 

 

EXPLANATION

The .class selector selects elements with a specific class attribute.  To select elements with a specific class, write a period (.) character, followed by the name of the class.

Definition and Usage

The .class selector selects elements with a specific class attribute.

To select elements with a specific class, write a period (.) character, followed by the name of the class.

You can also specify that only specific HTML elements should be affected by a class. To do this, start with the element name, then write the period (.) character, followed by the name of the class (look at Example 1 below).

HTML elements can also refer to more than one class (look at Example 2 below). 

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In Windows, out of the following commands, which command line command will show you the last reboot time of your machine?

In Windows, out of the following commands, which command line command will show you the last reboot time of your machine?

• net statistics workstation
• netstat -a
• get-uptime
• uptime 

 

EXPLANATION

The net statistics command displays the statistics log for the local Workstation or Server service, or the running services for which statistics are available. Used without parameters, net statistics lists the running services for which statistics are available.
The available parameters are:
workstation   : Displays statistics for the local Workstation service.
server   : Displays statistics for the local Server service.
net help   command   : Displays help for the specified net command.

https://technet.microsoft.com/en-us/library/bb490714.aspx

SOURCE

https://technet.microsoft.com/en-us/library/bb490714.aspx

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Which type of backup site has the fastest recovery time?

Which type of backup site has the fastest recovery time?

• Hot site
• Cold site
• Middle Site
• Warm Site 

 

EXPLANATION

A hot backup site is a full duplicate of the source data center, so has the fastest recovery time but also the highest price tag. The warm site is a scaled-down hot site,
which includes basics like power, networking, and telecommunications that are active at all times. A cold site usually includes power and physical space when not in use, giving you the longest recovery window for the cheapest price.

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