Objective 1.08 Describe Data Center, Server/virtual Server, and Object Monitoring Including Explanation of Resulting Object Statuses [prober Pools, BIG-IP and Generic Server Objects, Monitors, Etc.] 302 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A BIG-IP DNS administrator has configured a prober pool with three prober virtual servers located in different parts of the network. Each prober is running an HTTP monitor against the same virtual server object. The administrator observes that one prober is receiving a timeout while the other two are receiving successful responses. According to the default aggregation logic for prober pools, what is the resulting status of the monitored virtual server?

   • AUnknown, because the results are inconsistent across the probers.
   • BUp, because the majority of probers are receiving successful responses.
   • CDown, because all probers must succeed for the object to be considered up.
   • DDown, because the prober pool requires a unanimous decision to mark the object up.
   Reveal Solution Discussion Select an answer first
2. 7application · medium

   A company is setting up BIG-IP DNS to monitor a multi-tier application. They have a BIG-IP LTM device that load balances web servers, and they want to monitor the health of the BIG-IP LTM device itself, as well as the virtual server it hosts. In BIG-IP DNS, how should the administrator represent the BIG-IP LTM device and the virtual server it hosts?

   • ACreate a data center object for the BIG-IP LTM device and a server object for the hosted virtual server.
   • BCreate a single server object for the BIG-IP LTM device and include the virtual server as a pool member.
   • CCreate a server object for the BIG-IP LTM device and a virtual server object for the hosted virtual server.
   • DCreate a virtual server object for the BIG-IP LTM device and a server object for the hosted virtual server.
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4. 8application · medium

   A company has two data centers, each with a BIG-IP DNS and a virtual server for the same application. The virtual server in Data Center A is marked 'down' due to a failed HTTP monitor. The virtual server in Data Center B is 'up'. A wide-IP is configured to load balance between the two virtual servers. What will happen to client traffic for this wide-IP?

   • AAll client traffic will be sent to Data Center B, as the virtual server in Data Center A is unavailable.
   • BClient traffic will be sent to Data Center A because it is the preferred data center, regardless of its status.
   • CClient traffic will be split evenly between both data centers, as the wide-IP does not consider virtual server status.
   • DClient traffic will be sent to a fallback pool of servers in a third data center.
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5. 9expert · hard

   An administrator is configuring a prober pool to monitor a virtual server that is only accessible via HTTPS. The administrator has created a prober virtual server with a destination IP and port. They need to assign a monitor to the prober virtual server to check the HTTPS service. Which monitor type should be assigned to the prober virtual server?

   • AAn ICMP monitor, which checks if the server is reachable on the network.
   • BAn HTTPS monitor, which checks the SSL/TLS handshake and HTTP response on the specified port.
   • CA TCP monitor, which checks if the port is open and accepting connections.
   • DAn HTTP monitor, which checks the HTTP response on the specified port.
   Reveal Solution Discussion Select an answer first
6. 10application · medium

   A global enterprise has BIG-IP DNS deployed in two geographically separated data centers. They are configuring a wide-IP that load balances a critical web application hosted in both locations. The network team is concerned that a single monitoring point could incorrectly mark a data center as down due to a localized routing issue between the monitor and the target. They want the health of each data center's virtual server to be determined by probes originating from multiple network vantage points. What should the administrator configure to meet this requirement?

   • AConfigure a single ICMP monitor on the primary BIG-IP DNS and apply it to the virtual servers in both data centers.
   • BCreate a prober pool containing prober virtual servers on each BIG-IP DNS, and associate it with the virtual server monitors.
   • CAssign a separate TCP monitor to each virtual server and set the interval to a low value for faster failover.
   • DUse a custom monitor that checks the application's HTTP response code on the virtual server in each data center.
   Reveal Solution Discussion Select an answer first