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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Monitoring & Health Checks | 10% | - Monitor types and configuration
|
| Topic 2: Traffic Management Fundamentals | 25% | - Profiles and persistence
|
| Topic 3: Networking & Routing | 15% | - VLANs, self-IPs, and routes
|
| Topic 4: Maintenance & Upgrades | 10% | - Software installation and upgrades
|
| Topic 5: Troubleshooting & Support | 20% | - Tools and log analysis
|
| Topic 6: BIG-IP System Architecture & Initial Setup | 20% | - Initial configuration and licensing
|
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NEW QUESTION # 64
A BIG-IP Administrator needs to view the CPU utilization of a particular Virtual Server. Which section of the Configuration Utility should the administrator use for this purpose?
Answer: D
Explanation:
When a BIG-IP system experiences high overall CPU usage, troubleshooting requires identifying which specific application or service is the primary consumer of resources. While the system-wide performance graphs provide a global view, the granular data necessary to isolate a "top talker" is found in the "Local Traffic" statistics. Navigating to Statistics > Module Statistics > Local Traffic > Virtual Servers allows the administrator to see specific metrics for each configured virtual server, including the number of packets processed, current connections, and critical CPU cycles consumed. This is essential for troubleshooting performance issues where an inefficient iRule, high SSL handshake volume, or complex L7 profiles (like Compression or ASM) might be overtaxing the Traffic Management Microkernel (TMM) for one specific application. By reviewing these basic stats, an administrator can determine if a performance bottle-neck is a system-wide h1ardware issue or if it is isolated to a single virtual server, enabling targeted remediation such as optimizing iRule logic or moving the high-load virtual server to a dedicated device.
NEW QUESTION # 65
Refer to the exhibit.
The image shows the status of a virtual server namedapplication_vsin the BIG-IP Configuration Utility.
What is the cause of the status shown? (Choose two answers)
Answer: A,C
Explanation:
The exhibit shows the virtual serverapplication_vswith a status indicating it isoffline but enabled. In BIG-IP terminology, this status means the virtual server itself is administratively enabled, but it is unable to pass traffic becauseno usable pool members are available.
Two common and documented causes for this condition are:
Pool member(s) administratively disabled (Option A):When all pool members are administratively disabled, BIG-IP removes them from load-balancing decisions. Even though the virtual server remains enabled, it has no available pool members to send traffic to, resulting in an offline status.
Node(s) administratively disabled (Option C):Pool members inherit the status of their parent nodes. If a node is administratively disabled, all associated pool members are also marked unavailable. This condition causes the virtual server to show as offline, even though the virtual server configuration itself is correct.
The other options are incorrect:
Forced offline pool members (Option B)result in a different operational intent and are explicitly set for maintenance scenarios.
Virtual server administratively disabled (Option D)would show the virtual server as disabled, not enabled/offline.
This behavior is consistent with BIG-IP traffic management logic and is commonly verified by reviewingpool and node availability stateswhen diagnosing virtual server availability issues.
NEW QUESTION # 66
Which tmsh command shows virtual server status?
Answer: D
NEW QUESTION # 67
Users report that traffic is negatively affected every time a BIG-IP device fails over. The traffic becomes stabilized after a few minutes. What should the BIG-IP Administrator do to reduce the impact of future failovers?
Answer: B
Explanation:
When a virtual server's traffic flow is disrupted only during failover events and takes several minutes to stabilize, the issue is typically related to the ARP cache on upstream network devices47. By default, each BIG-IP in an HA pair uses its own unique hardware MAC address for traffic4848. When a failover occurs, the new active device takes over the floating IP addresses, but the upstream switch may still have the MAC address of the old device cached4949. Traffic fails until the switch's ARP entry is updated. "MAC Masquerade" is a troubleshooting feature that assigns a shared, virtual MAC address to the floating traffic group. Regardless of which BIG-IP is currently active, it will use this masqueraded MAC address for all traffic related to that group52. Because the MAC address seen by the network never changes during a failover, the upstream devices do not need to relearn ARP entries, resulting in an instantaneous transition and eliminating the performance drop reported by users
NEW QUESTION # 68
A BIG-IP Administrator needs to view the CPU utilization of a particular Virtual Server. Which section of the Configuration Utility should the administrator use for this purpose?
Answer: D
Explanation:
Monitoring granular resource utilization is essential when troubleshooting performance degradation for specific applications. While global system stats show overall hardware health, they do not pinpoint which virtual server is overconsuming resources during traffic spikes. To identify the specific application causing a high CPU load, the administrator should navigate to Statistics > Module Statistics > Local Traffic > Virtual Servers7474. This section provides detailed metrics for each virtual server, including CPU cycles used for traffic processing and iRule execution75. Identifying a "top-talker" or a problematic virtual server allows the administrator to take targeted action, such as optimizing an inefficient iRule, adjusting compression levels, or offloading the virtual server to a different device group76. This targeted troubleshooting ensures that one high-demand virtual server does not negatively impact the performance of other services running on the same BIG-IP hardware, maintaining overall system stability and resource availability
NEW QUESTION # 69
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