FortiOS Architecture and Memory Usage Quiz
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Questions and Answers

Which component of FortiOS makes basic and important decisions, such as routing packets or offloading sessions to an NPU processor?

  • Device drivers
  • User space
  • Kernel (correct)
  • Configuration layer

What bridges the kernel with the hardware in FortiOS?

  • Device drivers (correct)
  • Application processes
  • User space
  • Configuration layer

What is located above the kernel in FortiOS?

  • Application processes
  • Configuration layer
  • Device drivers
  • User space (correct)

What is the purpose of the configuration layer in FortiOS?

<p>To configure the system (C)</p> Signup and view all the answers

How does the kernel in FortiOS access the entire system memory?

<p>Directly (C)</p> Signup and view all the answers

What is the purpose of the command 'diagnose hardware sysinfo memory' in FortiOS?

<p>To display the total amount of system memory and free memory (B)</p> Signup and view all the answers

What are the five main purposes for which FortiGate allocates memory?

<p>Kernel memory slabs, system I/O cache, buffers, shared memory, process memory (C)</p> Signup and view all the answers

What is the purpose of kernel memory slabs in FortiOS?

<p>To collect objects with a common purpose and a fixed size (C)</p> Signup and view all the answers

What is the purpose of system I/O cache in FortiOS?

<p>To cache data from I/O operations (D)</p> Signup and view all the answers

What is the purpose of buffers in FortiOS?

<p>To read/write data from disk or flash (B)</p> Signup and view all the answers

Which type of cache is used for storing information about files and directories?

<p>inode_cache (C)</p> Signup and view all the answers

What are kernel memory slabs used for?

<p>Storing information in memory (D)</p> Signup and view all the answers

What is the purpose of the system I/O cache?

<p>To speed up access to information stored in hard and flash disk memories (D)</p> Signup and view all the answers

What happens to an I/O cache page when it has not been used for some time?

<p>It enters the inactive state (A)</p> Signup and view all the answers

What is the purpose of shared memory (SHM)?

<p>To allow processes to share information (D)</p> Signup and view all the answers

What is the command to display the total amount of memory allocated for the I/O cache?

<p>diagnose hardware sysinfo memory (A)</p> Signup and view all the answers

What is the purpose of WAN optimization?

<p>To speed up data transfer over a wide area network (C)</p> Signup and view all the answers

What is the size of a page in the I/O cache?

<p>4K (B)</p> Signup and view all the answers

What is the purpose of the route cache?

<p>To store entries in memory slabs (A)</p> Signup and view all the answers

What happens to an inactive page in the I/O cache if the kernel needs to reclaim memory?

<p>It may be reclaimed by the kernel (B)</p> Signup and view all the answers

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