20 Questions
Which component of FortiOS makes basic and important decisions, such as routing packets or offloading sessions to an NPU processor?
Kernel
What bridges the kernel with the hardware in FortiOS?
Device drivers
What is located above the kernel in FortiOS?
User space
What is the purpose of the configuration layer in FortiOS?
To configure the system
How does the kernel in FortiOS access the entire system memory?
Directly
What is the purpose of the command 'diagnose hardware sysinfo memory' in FortiOS?
To display the total amount of system memory and free memory
What are the five main purposes for which FortiGate allocates memory?
Kernel memory slabs, system I/O cache, buffers, shared memory, process memory
What is the purpose of kernel memory slabs in FortiOS?
To collect objects with a common purpose and a fixed size
What is the purpose of system I/O cache in FortiOS?
To cache data from I/O operations
What is the purpose of buffers in FortiOS?
To read/write data from disk or flash
Which type of cache is used for storing information about files and directories?
inode_cache
What are kernel memory slabs used for?
Storing information in memory
What is the purpose of the system I/O cache?
To speed up access to information stored in hard and flash disk memories
What happens to an I/O cache page when it has not been used for some time?
It enters the inactive state
What is the purpose of shared memory (SHM)?
To allow processes to share information
What is the command to display the total amount of memory allocated for the I/O cache?
diagnose hardware sysinfo memory
What is the purpose of WAN optimization?
To speed up data transfer over a wide area network
What is the size of a page in the I/O cache?
4K
What is the purpose of the route cache?
To store entries in memory slabs
What happens to an inactive page in the I/O cache if the kernel needs to reclaim memory?
It may be reclaimed by the kernel
Test your knowledge on FortiOS architecture and memory usage with this quiz. Learn about the kernel, device drivers, user space, and more. Perfect for anyone looking to deepen their understanding of FortiGate.
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