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</p> Signup and view all the answers

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

    <p>Directly</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</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</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</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</p> Signup and view all the answers

    What is the purpose of buffers in FortiOS?

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

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

    <p>inode_cache</p> Signup and view all the answers

    What are kernel memory slabs used for?

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

    What is the purpose of shared memory (SHM)?

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

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

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

    What is the purpose of the route cache?

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

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