Free F5 Networks 301b Exam Questions

Question 1

An LTM Specialist is tasked with ensuring that the syslogs for the LTM device are sent to a remote syslogserver.The following is an extract from the config file detailing the node and monitor that the LTM device is using fortheremote syslog server:monitorSyslog_15002 {defaults from udpdest *:15002 }node 91.223.45.231 {monitor Syslog_15002screen RemoteSYSLOG }There seem to be problems communicating with the remote syslog server. However, the pool monitor showsthat the remote server is up.The network department has confirmed that there are no firewall rules or networking issues preventing theLTM device fromcommunicating with the syslog server. The department responsible for the remote syslog server indicates thatthere maybe problems with the syslog server. The LTM Specialist checks the BIG-IP LTM logs for errors relating to theremote syslogserver. None are found. The LTM Specialist does a tcpdump:tcpdump -nn port 15002, with the following results:21:28:36.395543 IP 192.168.100.100.44772 > 91.223.45.231.15002: UDP, length 1921:28:36.429073 IP 192.168.100.100.39499 > 91.223.45.231.15002: UDP, length 16921:28:36.430714 IP 192.168.100.100.39499 > 91.223.45.231.15002: UDP, length 18121:28:36.840524 IP 192.168.100.100.39499 > 91.223.45.231.15002: UDP, length 16921:28:36.846547 IP 192.168.100.100.39499 > 91.223.45.231.15002: UDP, length 18121:28:39.886343 IP 192.168.100.100.39499 > 91.223.45.231.15002: UDP, length 144NotE. 192.168.100.100 is the self IP of the LTM device.Why are there no errors for the remote syslog server in the log files?

A : The -log option for tcpdump needs to be used.

B : The monitor type used is inappropriate.

C : The "verbose" logging option needs to be enabled for the pool.

D : When the remote syslog sever fails, it returns to service before the timeout for the monitor has expired.

Answer: B

Question 2

The active LTM device in a high-availability (HA) pair performs a failover at the same time the network teamreports an outage of a switch on the network.Which two items could have caused the failover event? (Choose two.)

A : a VLAN fail-safe setting

B : a monitor on a pool in an HA group

C : the standby LTM that was rebooted

D : an Auditor role that has access to the GUI

E : the standby LTM that lost connectivity on the failover VLAN

Answer: A,B

Question 3

An HA pair of LTM devices configured in Active-Standby mode stops responding to traffic and causes anoutage. The Active device becomes Standby, but the partner device stays in Standby mode instead of takingover as Active. A reboot and restart of the services brings the LTM device to Active mode for a short time, butthen 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

Answer: A,C

Question 4

-- Exhibit – 301b-page158-image19 -- Exhibit --Refer to the exhibit.A client attempts to connect from a Google Chrome browser to a virtual server on a BIG-IP LTM. The virtualserver is SSL Offloaded. When the client connects, the client receives an SSL error. The client receives thesame errors when trying Mozilla Firefox and Internet Explorer browsers.The LTM Specialist does an ssldump on the virtual server and receives the results as per the exhibit.How should this be resolved?

A : Set the virtual server to listen on port 443 (HTTPS).

B : Upgrade the client to support the appropriate SSL cipher suite.

C : Select the appropriate "SSL Profile (Client)" in the virtual server settings.

D : Adjust the SSL key length in the SSL profile to match the minimum required by the client.

Answer: C

Question 5

An LTM Specialist must perform a packet capture on a virtual server with an applied standard FastL4 profile.The virtual server 10.0.0.1:443 resides on vlan301.Which steps should the LTM Specialist take to capture the data payload successfully while ensuring no othervirtual servers are affected?

A : The standard FastL4 profile should have PVA acceleration disabled. Then the packet capture tcpdump -nivlan301 should be executed on the command line interface.

B : The packet capture tcpdump -ni vlan301 should be executed on the command line interface. There is noneed to change profiles or PVA acceleration.

C : A new FastL4 profile should be created and applied to the virtual server with PVA acceleration disabled.Then the packet capture tcpdump -ni vlan301 should be executed on the command line interface.

D : The LTM device is under light load. The traffic should be mirrored to a dedicated sniffing device. On thesniffing device, the packet capture tcpdump -ni vlan301 should be executed.

Answer: C