F5 F5 Certifications F50-531 Questions & Answers

• Question 51:

  Which process or system can be monitored by the BIG-IP system and used as a fail-over trigger in a redundant pair configuration?

  A. bandwidth utilization

  B. duplicate IP address

  C. CPU utilization percentage

  D. VLAN communication ability

  Correct Answer: D

• Question 52:

  Assuming there are open connections through an active system's NAT and a fail-over occurs, by default, what happens to those connections?

  A. All open connections will be lost.

  B. All open connections will be maintained.

  C. The "Mirror" option must be chosen on the NAT and the setting synchronized prior to the connection establishment.

  D. Long-lived connections such as Telnet and FTP will be maintained while short-lived connections such as HTTP will be lost.

  E. All open connections are lost, but new connections are initiated by the newly active BIG-IP, resulting in minimal client downtime.

  Correct Answer: B

• Question 53:

  Assume the bigd daemon fails on the active system. Which three are possible results? (Choose three.)

  A. The active system will restart the bigd daemon and continue in active mode.

  B. The active system will restart the tmm daemon and continue in active mode.

  C. The active system will reboot and the standby system will go into active mode.

  D. The active system will fail-over and the standby system will go into active mode.

  E. The active system will continue in active mode but gather member and node state information from the standby system.

  Correct Answer: ACD

• Question 54:

  What is the purpose of MAC masquerading?

  A. to prevent ARP cache errors

  B. to minimize ARP entries on routers

  C. to minimize connection loss due to ARP cache refresh delays

  D. to allow both BIG-IP devices to simultaneously use the same MAC address

  Correct Answer: C

• Question 55:

  A virtual server is listening at 10.10.1.100:any and has the following iRule associated with it: when CLIENT_ACCEPTED { if {[TCP::local_port] equals 21 } { pool ftppool } elseif {[TCP::local_port] equals 23 } { pool telnetpool } If a user connects to 10.10.1.100 and port 22, which pool will receive the request?

  A. ftppool

  B. telnetpool

  C. None. The request will be dropped.

  D. Unknown. The pool cannot be determined from the information provided.

  Correct Answer: D

• Question 56:

  When configuring a Virtual Server to use an iRule with an HTTP_REQUEST event, which list includes the required steps in a proper order to create all necessary objects?

  A. create profiles, create the iRule, create required pools, create the Virtual Server

  B. create the Virtual Server, create required pools, create the iRule, edit the Virtual Server

  C. create a custom HTTP profile, create required pools, create the Virtual Server, create the iRule

  D. create required pools, create a custom HTTP profile, create the iRule, create the Virtual Server

  Correct Answer: B

• Question 57:

  Which statement is true concerning a functional iRule?

  A. iRules use a proprietary syntax language.

  B. iRules must contain at least one event declaration.

  C. iRules must contain at least one conditional statement.

  D. iRules must contain at least one pool assignment statement.

  Correct Answer: B

• Question 58:

  What is the purpose of floating self-IP addresses?

  A. to define an address that grants administrative access to either system at any time

  B. to define an address that allows either system to initiate communication at any time

  C. to define an address that allows network devices to route traffic via a single IP address

  D. to define an address that gives network devices greater flexibility in choosing a path to forward traffic

  Correct Answer: C

• Question 59:

  Which parameters are set to the same value when a pair of BIG-IP devices are synchronized?

  A. host names

  B. system clocks

  C. profile definitions

  D. VLAN fail-safe settings

  E. MAC masquerade addresses

  Correct Answer: C

• Question 60:

  Which two statements are true concerning the default communication between a redundant pair of BIG-IP systems? (Choose two.)

  A. Synchronization occurs via a TCP connection using ports 683 and 684.

  B. Connection mirroring data is shared via a TCP connection using port 1028.

  C. Persistence mirroring data is shared via a TCP connection using port 1028.

  D. Connection mirroring data is shared through the serial fail-over cable unless network fail-over is enabled.

  Correct Answer: BC