BIG-IP Administration Data Plane Concepts (F5CAB2) exam Version: Demo [ Total Questions: 10] Web: www.certsout.com Email: support@certsout.com F5 F5CAB2 IMPORTANT NOTICE Feedback We have developed quality product and state-of-art service to ensure our customers interest. If you have any suggestions, please feel free to contact us at feedback@certsout.com Support If you have any questions about our product, please provide the following items: exam code screenshot of the question login id/email please contact us at and our technical experts will provide support within 24 hours. support@certsout.com Copyright The product of each order has its own encryption code, so you should use it independently. Any unauthorized changes will inflict legal punishment. We reserve the right of final explanation for this statement. F5 - F5CAB2 Certs Exam 1 of 19 Pass with Valid Exam Questions Pool A. B. C. D. Category Breakdown Category Number of Questions Determine expected traffic behavior based on configuration 5 Explain high availability (HA) concepts 2 TOTAL 10 Question #:1 A virtual server is listening at 10.10.1.100:80 and has the following iRule associated with it: when HTTP_REQUEST { if { [HTTP::header UserAgent] contains "MSIE" } { pool MSIE_pool } else { pool Mozilla_pool } If a user connects to http://10.10.1.100/foo.html and their browser does not specify a UserAgent, which pool will receive the request? MSIE_pool Mozilla_pool None. The request will be dropped. Unknown. The pool cannot be determined from the information provided. Answer: B Question #:2 - [Determine expected traffic behavior based on configuration] Refer to the exhibit above. F5 - F5CAB2 Certs Exam 2 of 19 Pass with Valid Exam Questions Pool F5 - F5CAB2 Certs Exam 3 of 19 Pass with Valid Exam Questions Pool F5 - F5CAB2 Certs Exam 4 of 19 Pass with Valid Exam Questions Pool A BIG-IP pool is configured with . The pool Priority Group Activation = Less than 2 available members members have different priority groups and availability states. Which pool members are ? receiving traffic (Choose one answer) F5 - F5CAB2 Certs Exam 5 of 19 Pass with Valid Exam Questions Pool A. B. C. D. serv1 serv1, serv3 serv1, serv2, serv3, serv4 serv1, serv3, serv4 Answer: D Explanation Comprehensive and Detailed Explanation From BIG-IP Administration Data Plane Concepts documents: This question tests understanding of and how BIG-IP determines which Priority Group Activation (PGA) pool members are eligible to receive traffic. Key BIG-IP Priority Group Concepts: Higher priority group numbers = higher priority BIG-IP will that meets the only send traffic to the highest priority group Priority Group Activation condition Lower priority groups are activated only when the condition is met Only members count toward the activation threshold available (green) Configuration from the Exhibit: Priority Group Activation: Less than 2 available members Pool Members and Status: Pool Member Priority Group Status serv1 2 Active (available) serv2 2 F5 - F5CAB2 Certs Exam 6 of 19 Pass with Valid Exam Questions Pool Inactive (down) serv3 1 Active (available) serv4 1 Active (available) Step-by-Step Traffic Decision: BIG-IP first evaluates the highest priority group (Priority Group 2) Priority Group 2 has: serv1 # available serv2 # unavailable Total available members = 1 Activation rule is Less than 2 available members Condition is (1 < 2) true BIG-IP activates the next lower priority group (Priority Group 1) Traffic is now sent to: serv1 (Priority Group 2) serv3 and serv4 (Priority Group 1) Final Result: Traffic is distributed to serv1, serv3, and serv4 Why the Other Options Are Incorrect: A – Ignores activation of the lower priority group B – serv4 is also active and eligible C – serv2 is down and cannot receive traffic F5 - F5CAB2 Certs Exam 7 of 19 Pass with Valid Exam Questions Pool A. B. C. D. Key Data Plane Concept Reinforced: Priority Group Activation controls when lower-priority pool members are allowed to receive traffic , based strictly on the number of in the higher-priority group. In this case, the failure of one available members high-priority member caused BIG-IP to to lower-priority members to maintain expand traffic distribution availability. =========== Question #:3 - [Determine expected traffic behavior based on configuration] A development team needs to apply a software fix and troubleshoot one of its servers. The BIG-IP Administrator needs to from the BIG-IP system to the back-end server. immediately remove all connections The BIG-IP Administrator checks the virtual server configuration and finds that a persistence profile is to it. assigned What should the BIG-IP Administrator do to meet this requirement? (Choose one answer) Set the pool member to a state and manually delete existing connections through the Forced Offline command line Set the pool member to an state and manually delete existing connections through the command Offline line Set the pool member to a state Forced Offline Set the pool member to a state Disabled Answer: C Explanation Comprehensive and Detailed Explanation (BIG-IP Administration – Data Plane Concepts): In BIG-IP traffic management, cause existing client connections (and subsequent persistence profiles requests) to be repeatedly sent to the same pool member. When persistence is enabled, simply preventing new connections is not sufficient if the requirement is to immediately remove all existing connections Key behavior of pool member states: Forced Offline Immediately removes the pool member from load balancing. Terminates all existing connections , regardless of persistence. Prevents new connections from being established. This is the correct state when urgent maintenance or troubleshooting is required. F5 - F5CAB2 Certs Exam 8 of 19 Pass with Valid Exam Questions Pool A. B. C. D. Disabled Prevents from being sent to the pool member. new connections Allows existing connections to continue , which is not acceptable when persistence is configured and connections must be cleared immediately. Offline (non-forced) Similar to Disabled behavior depending on context. Does of existing connections. not guarantee immediate termination Manually deleting connections via the command line Is unnecessary and operationally inefficient. BIG-IP already provides a supported mechanism ( ) to cleanly and immediately Forced Offline remove traffic. Conclusion: To immediately remove , including those maintained by persistence, the BIG-IP all existing connections Administrator must set the pool member to a state. This directly satisfies the requirement Forced Offline without additional manual steps. Question #:4 - [Explain high availability (HA) concepts] What should a BIG-IP Administrator configure to ? (Choose one answer) minimize impact during a failover External monitors Clone pool OneConnect profile MAC masquerading Answer: D Explanation Comprehensive and Detailed Explanation From BIG-IP Administration Data Plane Concepts documents: In BIG-IP high availability (HA) deployments, one of the primary causes of traffic disruption during failover is by upstream network devices (switches and routers). When traffic groups Layer 2 and Layer 3 relearning move from the Active device to the Standby device, the network must quickly associate the IP addresses with the new device. F5 - F5CAB2 Certs Exam 9 of 19 Pass with Valid Exam Questions Pool Why MAC Masquerading Minimizes Failover Impact: MAC masquerading allows a traffic group to use a for its Self IPs. This MAC floating, shared MAC address address moves with the traffic group during failover. Key benefits: The when failover occurs MAC address does not change Upstream switches do not need to relearn ARP entries Traffic resumes almost immediately after failover Dramatically reduces packet loss and connection interruption From BIG-IP Administration Data Plane Concepts: MAC masquerade is specifically designed to provide fast failover It is a best practice for HA pairs, especially in environments sensitive to latency and connection loss Why the Other Options Are Incorrect: A. External monitors Used to check the availability of external resources Do not reduce network convergence or failover disruption B. Clone pool Used for traffic mirroring or security analysis Has no impact on failover behavior C. OneConnect profile Optimizes server-side TCP connections Does not address ARP or MAC relearning during failover Key HA Concept Reinforced: To minimize failover impact on live traffic, BIG-IP administrators should ensure Layer 2 continuity MAC is the primary mechanism that enables near-instant failover by preventing ARP and MAC table masquerading reconvergence delays. =========== F5 - F5CAB2 Certs Exam 10 of 19 Pass with Valid Exam Questions Pool A. B. C. D. Question #:5 - [Explain high availability (HA) concepts] A BIG-IP Administrator makes a configuration change to a Virtual Server on the device of an HA Standby pair. The HA pair is currently configured with enabled. What effect will the change have on the HA Auto-Sync pair configuration? (Choose one answer) The change will be undone next time a configuration change is made on the Active device. The change will be propagated next time a configuration change is made on the Active device. The change will be undone when Auto-Sync propagates the config to the Standby device. The change will take effect when Auto-Sync propagates the config to the HA pair. Answer: C Explanation Comprehensive and Detailed Explanation From BIG-IP Administration Data Plane Concepts documents: In a BIG-IP high availability (HA) configuration, is a device trust feature that automatically Auto-Sync synchronizes configuration changes within a Sync-Failover from the Active device to the Standby device device group. Key principles from BIG-IP Administration Data Plane Concepts: The Active device is always the authoritative source of configuration Configuration changes are intended to be made only on the Active device With , any time the Active device configuration changes, the system automatically Auto-Sync enabled pushes the configuration to all Standby members of the device group Configuration changes made directly on a Standby device are not preserved In this scenario: The administrator modifies a Virtual Server on the device Standby That change is and does not alter the device group’s synchronized configuration local only When Auto-Sync next runs (triggered by a change on the Active device or an internal sync event), the Active device configuration overwrites the Standby configuration As a result, the configuration change made on the Standby device is undone Why the Other Options Are Incorrect: F5 - F5CAB2 Certs Exam 11 of 19 Pass with Valid Exam Questions Pool A – The change is not undone only when another change is made; it is undone during the next Auto- Sync operation B – Changes made on the Standby device are never propagated to the Active device D – Auto-Sync does not merge or promote Standby changes into the HA pair configuration Best Practice Reinforced: Always perform configuration changes on the when Auto-Sync is enabled to ensure Active BIG-IP device consistent and predictable HA behavior. =========== Question #:6 - [Determine expected traffic behavior based on configuration] Refer to the exhibit. F5 - F5CAB2 Certs Exam 12 of 19 Pass with Valid Exam Questions Pool F5 - F5CAB2 Certs Exam 13 of 19 Pass with Valid Exam Questions Pool F5 - F5CAB2 Certs Exam 14 of 19 Pass with Valid Exam Questions Pool The BIG-IP Administrator needs to avoid overloading any of the pool members with connections when . What should the BIG-IP Administrator configure to meet this requirement? (Choose one they become active answer) F5 - F5CAB2 Certs Exam 15 of 19 Pass with Valid Exam Questions Pool A. B. C. D. Slow Ramp Time to the Pool Different Ratio for each member Action On Service Down to Reselect Same Priority Group to each member Answer: A Explanation Comprehensive and Detailed Explanation From BIG-IP Administration Data Plane Concepts documents: This question focuses on , which is a connection behavior when pool members transition from down to up classic data plane consideration in BIG-IP environments. What problem is being solved? When a pool member: Recovers from a failure Is enabled after maintenance Transitions from to inactive active ...it can suddenly receive a , especially when using load-balancing methods large burst of new connections such as . This sudden surge can overload the server. Least Connections Why Slow Ramp Time is the correct solution: Slow Ramp Time is a pool-level setting that: Gradually increases the number of connections sent to a newly available pool member Prevents sudden spikes in traffic Allows the server to warm up (application cache, JVM, DB connections, etc.) From BIG-IP Administration Data Plane Concepts: Slow Ramp Time controls the to a pool member that has just rate at which BIG-IP increases load become available During the ramp period, BIG-IP artificially increases the member’s connection count, making it appear “busier” and therefore less attractive for new connections This directly satisfies the requirement to avoid overloading pool members when they become active F5 - F5CAB2 Certs Exam 16 of 19 Pass with Valid Exam Questions Pool A. B. C. D. Why the Other Options Are Incorrect: B. Different Ratio for each member Ratios control under normal operation relative distribution They do not prevent a sudden surge when a member becomes active C. Action On Service Down to Reselect Controls persistence behavior when a member goes down Has no impact on connection ramp-up when a member comes back online D. Same Priority Group to each member Affects failover logic between priority groups Does not control connection rate or ramp-up behavior Key Data Plane Concept Reinforced: To protect backend servers during recovery events, BIG-IP provides , ensuring Slow Ramp Time graceful and preventing connection storms that can occur during high-load scenarios. reintroduction of traffic =========== Question #:7 A BIG-IP Administrator needs to apply a health monitor for a pool of database servers named DB_Pool that uses TCP port 1521. Where should the BIG-IP Administrator apply this monitor? Local Traffic > Profiles » Protocol > TCP Local Traffic > Nodes > Default Monitor Local Traffic > Pools > De Pool > Members Local Traffic > Pools > DB Pool > Properties Answer: D Question #:8 - [Determine expected traffic behavior based on configuration] F5 - F5CAB2 Certs Exam 17 of 19 Pass with Valid Exam Questions Pool A. B. C. D. A BIG-IP system receives a client connection destined to . Multiple virtual servers are 1.0.0.10:8080 configured on the system. Which virtual server will process the connection? (Choose one answer) A forwarding virtual server configured with 0.0.0.0:any A forwarding virtual server configured with 1.0.0.10:any (port 0) A virtual server configured with destination and is 1.0.0.10:8080 available (green) A virtual server configured with 0.0.0.0:8080 Answer: C Explanation Comprehensive and Detailed Explanation From BIG-IP Administration Data Plane Concepts documents: BIG-IP uses a to determine which virtual server virtual server matching and precedence algorithm processes an incoming connection. This decision is made entirely in the and is based on how data plane specifically a virtual server matches the destination IP address and port. BIG-IP Virtual Server Selection Rules (Simplified): When multiple virtual servers could match a packet, BIG-IP selects the , using the most specific match following precedence: Exact IP address and exact port Exact IP address with wildcard port (port 0 / any) Wildcard IP address with exact port Wildcard IP address and wildcard port Applying the Rules to This Scenario: Incoming traffic destination: 1.0.0.10:8080 Option C: 1.0.0.10:8080 Exact IP match Exact port match Highest possible specificity If the virtual server is available (green), it wins the match Option B: 1.0.0.10:any F5 - F5CAB2 Certs Exam 18 of 19 Pass with Valid Exam Questions Pool A. B. C. Exact IP match, but wildcard port Lower priority than an exact IP + exact port match Option D: 0.0.0.0:8080 Wildcard IP, exact port Lower priority than an exact IP match Option A: 0.0.0.0:any Wildcard IP and wildcard port Lowest priority, used only if no more specific virtual server exists Final Determination: Because a virtual server configured with exactly matches both the IP address and destination 1.0.0.10:8080 port of the incoming connection—and is available—it will be selected to process the traffic. always Key Data Plane Concept Reinforced: BIG-IP always processes traffic using the . Exact destination IP and most specific matching virtual server port matches take precedence over any wildcard or forwarding virtual server definitions. =========== Question #:9 - [Determine expected traffic behavior based on configuration] Which of the following lists the when BIG-IP order of preference from most preferred to least preferred processes and selects a ? (Choose one answer) virtual server Destination host address # Source host address # Service port Source host address # Service port # Destination host address Service port # Destination host address # Source host address Answer: A Explanation The BIG-IP system uses a specific precedence algorithm to determine which virtual server (listener) should process an incoming packet when multiple virtual servers might match the criteria. Since BIG-IP version 11.3.0, the system evaluates three primary factors in a fixed order of importance: