Given a subnet address of 10.1.129.0/25, what is the broadcast address?

Given a subnet address of 10.1.129.0/25, what is the broadcast address?

• 10.1.129.25
• 10.1.129.127
• 10.255.255.255
• 10.1.129.255 

EXPLANATION

If we look at the address and subnet mask in binary, we can see the following:
0000 1010 . 0000 0001 . 1000 0001 . 0000 0000
1111  1111 . 1111 1111  . 1111 1111  . 1000 0000
Looking at the last octet, we can see that there are 7 binary zeros. These indicate that we have 7 host bits. When you change all of those bits to ones, you end up with:



 0000 1010 . 0000 0001 . 1000 0001 . 0111 1111
Converting back to decimal, we get:
10.1.129.127.

https://subnet.techlanda.com/

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In PowerShell, how do you list drives?

In PowerShell, how do you list drives?

• list-drives
• get-Psdrive
• dir PsDrives
• ls PsDrives

EXPLANATION

Get-PsDrive lists all physical and virtual drivers you can use with PowerShell to change just add : (colon) like:

cd HKLM:

SOURCE

http://go.microsoft.com/fwlink/?LinkID=113327

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What is the database design process used to increase integrity and reduce redundancy of data?

What is the database design process used to increase integrity and reduce redundancy of data?

• Relational Design
• Data Constraints
• Error Handling
• Normalization

EXPLANATION

This process is used to create the Entity Relationship Diagrams necessary to design a database. Each level of normalization is a new "normal form". Typically databases use 3NF or 4NF.
The higher the normal form the more relational your database will be.

SOURCE

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

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In Chrome OS what command allows your to refresh a webpage on Chrome?

In Chrome OS what command allows your to refresh a webpage on Chrome?

• CTRL + R
• ALT + F4
• F5
• CTRL + F5 

EXPLANATION

in most browsers a simple F5 refreshes your webpage. However on Chrome OS F5 is the switch window key, therefore your need to use CTRL+R in order to refresh a page.

SOURCE

https://support.google.com/chromebook/answer/183101?hl=en-GB

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Which SQL Server edition does not require a license for production use?

Which SQL Server edition does not require a license for production use?

• Express
• Standard
• Developer
• Enterprise 

EXPLANATION

Both Standard and Enterprise require licensing.  Developer also does not require a license but cannot be used for production.

SOURCE

https://www.microsoft.com/en-us/sql-server/sql-server-2017-editions

 

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