Introduction to F5-201: TMOS Administration Exam

The qualified candidate is capable of performing day-to-day operations of TMOS-based devices which have already been installed. They are also capable of basic troubleshooting of a TMOS-based device in order to provide full, accurate, and appropriate information to senior engineers and/or F5 Support.

They can do any of the following without assistance:

• Perform software management functions on the platform (for example, capable of performing upgrades and licensing).
• Open a support case and utilize online resources such as AskF5, F5 iHealth, and DevCentral
• Be familiar with HTTP, ClientSSL, ServerSSL, TCP, UDP, and persistence profiles
• Able to access and manage the BIG-IP through multiple paths (management IP, Self IP)
• Perform administrative tasks using the GUI
• Understand the relationship and differentiation between virtual servers, virtual server types, virtual addresses, pools, pool members, nodes, profiles, iRules, and address translation (NAT/SNAT)

Understanding of functional and technical aspects of Troubleshooting Basic Virtual Server Connectivity Issues

The following will be discussed in this section:

• Determine the state and availability of the pool member/node in question
• Validate the expected persistence behavior
• Understand how a virtual server processes a request (most specific to least specific)
• Verify the pool member/node connection configuration and count
• Explain the concept of “persistence”
• Understand how a packet is processed once it arrives at device (connection table, packet filters, etc.)
• Determine if the pool configuration has an effect on virtual server state
• Determine if a virtual server is configured with the proper IP address configuration
• Understand the difference between the virtual servers status definitions
• Determine which tools to use in order to diagnose the issue
• Verify the pool member/node Ratio configuration
• Given a specific connectivity issue, isolate where the problem might be according to the processing order
• Differentiate between fallback and primary persistence
• Use the appropriate tool to troubleshoot persistence
• Verify the type of persistence profile assigned to the virtual server in question
• Understand the effects of health monitors on the status of pool members/nodes
• Determine if the virtual server is configured with the appropriate profiles
• Determine if a virtual server is configured for the proper listening port
• Determine the state of a virtual server (offline, enabled, etc.)

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F5 201 Exam Syllabus Topics:

Reference: https://support.education.f5.com/hc/en-us/articles/4403999362715-TMOS-Administration-201

Understanding of functional and technical aspects of Troubleshooting basic performance issues

The following will be discussed in this section:

• Understand how to get performance statistics in addition to the those shown in the dashboard (Overview - Performance)
• Establish the frequency of a given issue (random, continuous, isolated, intermittent, repetitive intervals)
• Use BIG-IP tools in order to identify potential performance issues
• Differentiate between performance issue types (i.e. Latency, Congestion, broken content)
• Recognize when a packet capture is needed within the context of a performance issue

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