F5 303 Online Practice Questions and Exam Preparation

F5 303 Online Questions & Answers

• Question 121:

  Administrative user accounts have been defined on the remote LDAP server and are unable to log in to the BIG-IP device. Which log file should the BIG-IP Administrator check to find the related messages?

  A. /var/log/secure
  B. /var/log/messages
  C. /Nar/log/ltm
  D. /var/log/user.log
  A. /var/log/secure

• Question 122:

  What is the recommended procedure for upgrading a major TMOS release on a BIG-IP platform?

  A. 1. Renew the device license. 2.Take a configuration backup. 3.Reboot the device to the non-active volume. 4.Upload the device code. 5.Install device code to the current volume.
  B. 1. Take a configuration backup. 2.Upload the device code. 3.Install device code to the non-active volume. 4.Reboot the device to the non-active volume. 5.Renew the device license.
  C. 1. Renew the device license. 2.Take a configuration backup. 3.Upload the device code. 4.Install device code to the non-active volume. 5.Reboot the device to the non-active volume.
  D. 1. Take a configuration backup. 2.Reboot the device to the non-active volume. 3.Renew the device license. 4.Upload the device code. 5. Install device code to the current volume.
  C. 1. Renew the device license. 2.Take a configuration backup. 3.Upload the device code. 4.Install device code to the non-active volume. 5.Reboot the device to the non-active volume.

• Question 123:

  An HA pair of LTM devices configured in Active-Standby mode stops responding to traffic and causes an outage. The Active device becomes Standby, but the partner device stays in Standby mode instead of taking over as Active. A reboot and restart of the services brings the LTM device to Active mode for a short time, but then it goes into Standby mode again.

  Which two configuration components caused this condition? (Choose two.)

  A. VLAN Fail-safe
  B. System Fail-safe
  C. Gateway Fail-safe
  D. Switch Board Failure
  E. Link down on Failover
  A. VLAN Fail-safe
  C. Gateway Fail-safe

• Question 124:

  A design requires the LTM device to become HA standby when the one of the two physical interface on the External trunk is down the Externaltrunk is an interface on the External VLAN Which TMOS command enables this behavior?

  A. tmsh modify net van External failsafe enabled
  B. tmsh create sys ha-group External trunks add Externally
  C. tmsh create sys ha-group External trunks add External threshold 2 weight 101)
  D. tmsh create sys ha-group External trunks add ( External( attribute percent up-members 100))
  C. tmsh create sys ha-group External trunks add External threshold 2 weight 101)

• Question 125:

  A BIG-IP Administrator runs the initial configuration wizard and learns that the NTP servers were invalid. In which area of the Configuration Utility should the BIG-IP Administrator update the list of configured NTP servers?

  A. System > Configuration
  B. System > Services
  C. System > Preferences
  D. System > Platform
  A. System > Configuration

• Question 126:

  DNS queries from two internal DNS servers are being load balanced to external DNS Servers via a Virtual Server on a BIG-P device. The DNS queries originate from 192.168.101.100 and 192.168.101.200 and target 192.168.21.50.

  All DNS queries destined for the external DNS Servers fail.

  Which property change should the BIG-IP Administrator make in the Virtual Server to resolve this issue?

  A. Protocol Profile (Client) to DNS-OPTIMZED
  B. Type to Performance (HTTP)
  C. Protocol to UDP
  D. Source Address to 192.168.101.0/24
  C. Protocol to UDP

• Question 127:

  Refer to the exhibit

  

  The network team creates a new VLAN on the switches. The BIG-IP Administrator needs to create a configuration on the BIG-IP device. The BIG-IP Administrator creates a new VLAN and Self IP, but the servers on the new VLAN are NOT reachable from the BIG-IP device.

  Which action should the BIG-IP Administrators to resolve this issue?

  A. Set Port Lockdown of Set IP to Allow All
  B. Change Auto Last Hop to enabled
  C. Assign a physical interface to the new VLAN
  D. Create a Floating Set IP Address
  C. Assign a physical interface to the new VLAN

• Question 128:

  To increase available bandwidth of an existing Trunk, the BIG-IP Administrator is adding additional interfaces. Which command should the BIG-IP Administrator run from within bosh shell?

  A. tmsh create /net trunk trunk_A interfaces add {1.3.1.4}
  B. tmsh create/sys trunk trunk_A interfaces add {1.3.1.4}
  C. tmsh modify/sys trunk trunk^A interfaces add {1.3.1.4}
  D. tmsh modify /net trunk trunk_A interfaces add {1.3.1.4}
  D. tmsh modify /net trunk trunk_A interfaces add {1.3.1.4}

• Question 129:

  ABIG IP system load balances connections to a web application. A TCP-based Denial of Service attack against the web application is occurring, which has caused very high memory utilization on the LTM device due to stale TCP connections.

  Which TCPprofile option should be used to reduce memory utilization?

  A. Idle timeout
  B. Reset on timeout
  C. Slow Start
  D. Multipath TCP
  A. Idle timeout

• Question 130:

  Which log file should the BIG-IP Administrator check to determine if a specific user tried to log in to the 8IG-IP Configuration by utility?

  A. /var/log/pam/tally/log
  B. /ver/log/secure
  C. /var/log/trn
  D. /var/log/http.d
  B. /ver/log/secure