Interpret Availability Status of Interfaces F5CAB5 Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A BIG-IP administrator needs to perform maintenance on a network interface that is currently carrying production traffic. The administrator wants to ensure that the interface is not used for any new connections while maintenance is performed, but does not want to remove the interface from the configuration. What should the administrator do?

   • AChange the interface speed to a lower value to reduce traffic.
   • BUnplug the network cable from the interface.
   • CSet the interface to 'disabled' in the Configuration Utility.
   • DRemove the interface from all VLANs and trunks.
   Reveal Solution Discussion Select an answer first
2. 2expert · hard

   An administrator is troubleshooting a BIG-IP that is experiencing packet loss on a specific interface. The interface status shows 'up' and the negotiated speed is correct. The administrator checks the interface counters and sees a high number of 'RX errors' but no 'TX errors'. The cable and switch port have been replaced, and the issue persists. What is the most likely cause of the RX errors?

   • AA faulty SFP or GBIC transceiver on the BIG-IP interface.
   • BThe switch port is configured with a higher speed than the BIG-IP interface.
   • CThe BIG-IP is experiencing a TMM failure on that interface.
   • DThe BIG-IP interface is not assigned to the correct VLAN.
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   An administrator notices that a BIG-IP interface connected to a distribution switch is showing a status of 'down' in the Configuration Utility, even though the switch port is administratively up and the cable is securely connected. The administrator verifies that the switch port is in the correct VLAN and that no spanning-tree issues exist. What should the administrator check next to isolate the cause of the interface being down?

   • AVerify that the media type and speed/duplex settings on the BIG-IP interface match the switch port configuration.
   • BConfirm that the interface is assigned to a VLAN before it can pass traffic.
   • CReboot the BIG-IP device to force a re-initialization of the network interfaces.
   • DCheck the BIG-IP system logs for TMM failure messages indicating a software crash on the interface.
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   An interface on a BIG-IP system is 'up' but the administrator suspects it is not performing well. Which status indicator would help confirm a performance issue?

   • AThe interface is not in a disabled state.
   • BHigh error or drop counters on the interface.
   • CThe interface is assigned to a VLAN.
   • DThe interface is administratively enabled.
   Reveal Solution Discussion Select an answer first
6. 5application · medium

   A BIG-IP administrator is troubleshooting a performance issue where traffic through a specific interface is slower than expected. The interface status shows 'up' and the link speed is negotiated at 1 Gbps, but throughput tests show only 200 Mbps. The administrator checks the interface counters and sees a high number of CRC errors. What is the most likely cause of this performance degradation?

   • AThe BIG-IP is configured for half-duplex on this interface.
   • BA faulty cable or connector causing physical layer errors.
   • CThe interface is a member of a trunk and is not the active member.
   • DThe interface is configured with a lower MTU than the rest of the network.
   Reveal Solution Discussion Select an answer first