F5 BIG-IP LTM Maintain and Troubleshoot (301B) Certification Sample Questions

02. A virtual server terminates SSL from clients and forwards the requests to its pool members without encryption. The application on the members builds links for the pages it returns and is producing unencrypted links, because it sees the request arriving in the clear. The application is documented to honor a request header stating the protocol the client used, and the application owner has ruled out rewriting page content in transit.
What is the appropriate solution?
a) Rewrite each link in the responses as they pass back through the device
b) Publish the application on a second virtual server that does not terminate the encryption
c) Have the device tell the members that the client connection was encrypted
d) Encrypt the connection between the device and the members so that the requests arrive protected

03. Pool members with limited capacity are spending a noticeable share of their work answering health monitors. Which two changes reduce that load?
(Choose two.)
a) Probe the members less frequently
b) Have the probe request something cheaper for the member to produce
c) Shorten the timeout so that failed probes are abandoned sooner
d) Assign the same monitor to the pool as well as to each member

04. Captures taken at the same time on both sides of a BIG-IP device show frequent retransmissions between the device and the pool members, while the client side shows almost none. What does the comparison localize?
a) A problem on the client-side path that the device is concealing by retransmitting for the clients
b) A problem with the capture, because retransmissions should appear on both sides in equal numbers
c) A problem in the application itself, since the members are having to send their data more than once
d) A problem on the path between the device and the pool members behind it

05. Users report an error page from an application. A capture shows a complete request and a response carrying a success status code, with no resets, retransmissions or delays anywhere in the exchange. What does the evidence establish?
a) The device rewrote the status code before returning the response to the client
b) The client is displaying a cached page from an earlier failed attempt
c) The error is contained in the response body
d) The capture was taken at a point that does not carry the failing traffic

06. An LTM device has 10 virtual servers for hosts in the same domain, each with its own key and certificate pair — for example www.example.com, ftp.example.com, ssh.example.com and ftps.example.com. What should the LTM Specialist do to reduce the number of objects on the LTM device?
a) Import the 10 certificates into a single certificate chain file and assign that file to one ClientSSL profile
b) Create a virtual server on port 0 and let it answer for every protocol
c) Create a transparent virtual server to replace all of the existing virtual servers
d) Create a wildcard certificate and use it on all of the *.example.com virtual servers

07. Which two iRule events are appropriate for inspecting HTTP requests and responses?
(Choose two.)
a) CLIENT_ACCEPTED
b) HTTP_REQUEST
c) SERVER_CONNECTED
d) HTTP_RESPONSE

08. Small requests through a virtual server succeed while large ones stall. A capture shows the large transfers stopping at the same point each time, with ICMP messages returning from a device on the path reporting that the packets are too large to forward.
What resolves the problem?
a) Move the pool members onto the same subnet as the clients so no intermediate device is involved
b) Apply compression so that the responses are small enough to cross the constrained path
c) Bring the packet size in line with what the path will carry
d) Raise the idle timeout in the profile so the transfer is not abandoned partway through

09. An LTM Specialist compares traces taken on both sides of a BIG-IP device while a request fails. Which two differences between the traces would implicate the device configuration?
(Choose two.)
a) A header present in one trace and absent in the other
b) A request forwarded to a member other than the one the transaction belongs to
c) A difference in the number of packets each trace contains overall
d) A difference in the time at which each trace recorded the packets

10. When re-licensing an LTM device from the command line interface, which tmsh command should the LTM Specialist use to generate the required information to provide on the F5 licensing portal?
a) tmsh generate /sys dossier
b) tmsh list /sys registration-key
c) tmsh install /sys license registration-key
d) tmsh run /util get-dossier