F5 F50-531 問題集

質問 1：
Where is the load-balancing mode specified?
A. within the pool definition
B. within the virtual server definition
C. within the node definition
D. within the pool member definition
正解：A

質問 2：
Assume a BIG-IP has no NATs or SNATs configured. Which two scenarios are possible when client traffic arrives on a BIG-IP that is NOT destined to a self-IP? (Choose two.)
A. If the destination of the traffic does not match a virtual server, the traffic will be forwarded based on routing tables.
B. If the destination of the traffic does not match a virtual server, the traffic will be discarded.
C. If the destination of the traffic matches a virtual server, the traffic will be processed per the virtual server definition.
D. If the destination of the traffic matches a virtual server, the traffic will be forwarded, but it cannot be load-balanced since no SNAT has been configured.
正解：B,C

質問 3：
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. telnetpool
B. Unknown. The pool cannot be determined from the information provided.
C. ftppool
D. None. The request will be dropped.
正解：B

質問 4：
What is the purpose of provisioning?
A. Provisioning allows modules that are not licensed to be fully tested.
B. Provisioning allows modules that are licensed be granted appropriate resource levels.
C. Provisioning allows the administrator to activate modules in non-standard combinations.
D. Provisioning allows the administrator to see what modules are licensed, but no user action is ever required.
正解：B

質問 5：
Which three iRule events are likely to be seen in iRules designed to select a pool for load balancing? (Choose 3)
A. CLIENT_ACCEPTED
B. HTTP_REQUEST
C. HTTP_RESPONSE
D. CLIENT_DATA
E. SERVER_SELECTED
F. SERVER_DATA
G. SERVER_CONNECTED
正解：A,B,D

質問 6：
Which is an advantage of terminating SSL communication at the BIG-IP rather than the ultimate web server?
A. Terminating SSL at the BIG-IP can eliminate SSL processing at the web servers.
B. Terminating SSL at the BIG-IP eliminates the need to use SSL acceleration hardware anywhere in the network.
C. Terminating SSL at the BIG-IP eliminates all UN-encrypted traffic from the internal network.
D. Terminating SSL at the BIG-IP eliminates the need to purchase SSL certificates from a certificate authority.
正解：A

質問 7：
A site has six members in a pool. Three of the servers are new and have more memory and a faster processor than the others. Assuming all other factors are equal and traffic should be sent to all members, which two load-balancing methods are most appropriate? (Choose two.)
A. Observed
B. Ratio
C. Priority
D. Round Robin
正解：A,B

質問 8：
A site wishes to perform source address translation on packets from some clients but not others. The determination is not based on the client's IP address, but on the virtual servers their packets arrive on. What could best accomplish this goal?
A. The decision to perform source address translation is always based on VLAN. Thus, the goal cannot be achieved.
B. Some virtual servers could be associated with SNAT pools and others not associated with SNAT pools.
C. The decision to perform source address translation is always based on a client's address (or network). Thus, this goal cannot be achieved.
D. A SNAT for all addresses could be defined, and then disable the SNAT processing for select VLANs.
正解：B