IT Questions and Answers :)

Friday, February 21, 2020

In Microsoft Azure, What server size/series uses credits and slows down if the credits run out?

In Microsoft Azure, What server size/series uses credits and slows down if the credits run out?

  • F series
  • D series
  • B series
  • A series 
In Microsoft Azure, What server size/series uses credits and slows down if the credits run out?

EXPLANATION

The B-series VMs are ideal for workloads that do not need the full performance of the CPU continuously, like web servers, proof of concepts, small databases and development build environments. These workloads typically have burstable performance requirements. The B-series provides you with the ability to purchase a VM size with baseline performance and the VM instance builds up credits when it is using less than its baseline.
When the VM has accumulated credit, the VM can burst above the baseline using up to 100% of the vCPU when your application requires higher CPU performance. If the CPU usage goes above 25% it will start to consume credit. WHen the credits run out the server will run at baseline rate.

SOURCE

https://docs.microsoft.com/en-us/azure/virtual-machines/windows/b-series-burstable
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Which of the following lines of code is not in proper Syntax for its language?

Which of the following lines of code is not in proper Syntax for its language?

  • VISIBLE "HAI WORLD!!!1!"
  • console.log(Hello World!);
  • cout << "Hello World!" << endl;
  • TALK TO THE HAND "Hello, World!" 
Which of the following lines of code is not in proper Syntax for its language?

EXPLANATION

The correct answer is console.log(Hello World!); The code is written in JavaScript and it is missing the apostrophes around 'Hello World!' The working version of this code would be: console.log('Hello World!');
The rest of the lines of code are all completely legal for their own language. The first being C++ the code cout << "Hello World!" << endl; will print the words "Hello World!" to the console and then move to the next line.
The next answer is written in ArnoldC which is a language based off of quotes from movies that featured Arnold Schwarzenegger. YOU HAVE BEEN TERMINATED
The final, and my favorite is called LOLCODE, which is a c based language that features language used by the stereotypical lolcatz. If you would like to learn more about this language there is a website dedicated to its use. you can find it here at http://lolcode.org

PS. Yes I sourced wikipedia, it only let me source one website.

SOURCE

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




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Wednesday, February 19, 2020

What is the current (as of Feb. 2020) limit on physical memory for Windows 10 Pro 64-bit?

What is the current (as of Feb. 2020) limit on physical memory for Windows 10 Pro 64-bit?

  • 24 TB
  • 6 TB
  • 2 TB
  • 4 GB 
What is the current (as of Feb. 2020) limit on physical memory for Windows 10 Pro 64-bit?

 

EXPLANATION

Physical Memory Limits on the following editions of Windows 10:

  • Windows 10 Pro 32-bit: 4 GB
  • Windows 10 Pro 64-bit: 2 TB
  • Windows 10 Enterprise 64-bit: 6 TB
  • Windows Server 2016: 24 TB
See Microsoft's article on Memory Limits for Windows and Windows Server Releases
See this video on actually running Windows 10 Pro with 2 TB of physical memory.

SOURCE

https://docs.microsoft.com/en-us/windows/win32/memory/memory-limits-for-windows-releases
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Tuesday, February 18, 2020

Which of the following features does TFTP provide?

Which of the following features does TFTP provide?

  • flow control
  • email notifications
  • compression
  • snmp traps 

 

EXPLANATION

While UDP is connection-less, it does not mean that TFTP is not, it means the transport layer protocol is connection-less.
In this case TFTP has it's own built in flow control, error detection, acknowledgements, and error recovery mechanisms

SOURCE

https://en.wikipedia.org/wiki/User_Datagram_Protocol
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Thursday, February 13, 2020

Which of the following is the purpose of a private VLAN (PVLAN) in Cisco?

Which of the following is the purpose of a private VLAN (PVLAN) in Cisco?

  • A secured VLAN with no outside access.
  • A VLAN with only one port or interface assigned to it.
  • A VLAN that is only configured on a single switch.
  • Allows access to a resource (like the internet), but not between access ports. 

Which of the following is the purpose of a private VLAN (PVLAN) in Cisco?

EXPLANATION

A private VLAN would be used in an application like a motel. There would be certain port(s) that would allow access to the internet, DNS servers, etc. But the access ports that may connect to each motel room would be isolated from each other. This means that room one can't see room two or the other way around, but they can both get to some servers or the internet.
You could have a VLAN on only one switch, but this is not a private VLAN.

A VLAN with only one port or interface is also not a private VLAN and having only one member would mean it is basically useless.
While private VLANS improve security it is not generally the same as having a VLAN that can't connect outside of the VLAN.
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