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F5 LTM Specialist 備考常見疑問一次解答

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問題 #1

The following iRule is being used within a persistence profile on a virtual server. Assuming the following HTTP requests are made within the same timeout window, what is the maximum number of persistence records that will be created iRule: rule Persist_Universal { when HTTP_REQUEST { persist uie [findstr [HTTP::uri] "?" 8 3] } Requests:#1 http: I/www.test.com/input.html?testl 45ABR80 #2 http ://www.test.com/input .html?testl 35PDC72 #3 http :llwww.test. com/input.html?testl 25ABR76 #4 http ://www.test.com/input.html?testl
45MN088 #5 http ://www.test. com/input.html?testl 55ABR98 #6 http ://www.test.com/input.html?testl 45 PDC6O #7 http ://www.test. com/input.html?testl 75ABC50 #8 http ://www.test.com/input.html?testl 25MN055 #9 http: llwww.test. com/input.html?testl 45ABC70 #10 http ://www.test.com/input.html?testl 35PDC42

A. It cannot be determined from the given data.
B. 0
C. 5
D. 10
E. 4
F. 1
G. 3

問題 #2

Which three statements are true about SNATs? (Choose three.)

A. SNAT addresses can be identical to virtual server IP addresses.
B. SNAT s provide bi-directional traffic initiation.
C. SNAT s support UDP, TCP, and ICMP traffic.
C, SNAT s provide a many-to-one mapping between IP addresses.

問題 #3

An LTM has the 3 virtual servers, 2 SNATs, four self IP addresses defined, and the networks shown in the exhibit. Selected options for each object are shown below. Settings not shown are at their defaults.
Assume port exhaustion has not been reached. Vi rtualServerl Destination: 10.10.2.102:80 netmask 255.255.255.255 Pool: Pool with 3 members in the 172.16/16 network SNAT Automap configured Vi rtualServer2 Destination: 10.10.2.102:* netmask 255.255.255.255 Pool: Pool with 3 members in the 192.168/16 network Vi rtualServer3 Destination: 10.10.2.0:80 netmask 255.255.255.0 Type: IP Forwarding SNAT1 Source IP: 10.10.0.0 netmask 255.255.0.0 SNAT Address: SNAT Pool with 2 members
172.16.20.50 and 192.168.10.50 SNAT2 Source IP: All Addresses SNATAddress:
10.10.2.102 Floating Self IPs 192.168.1.1; 172.16.1.1; 10.10.2.1; 10.10.1.1

A. Source IP: 10.10.2.102; Destination IP 10.10.2.10
B. connection attempt is made with a source IP and port of 10.10.100.50:2222 and a destination IP and port of 10.10.2.10:80. When the request is processed, what will be the source and destination IP addresses?

C. Source IP: Either 172.16.20.50 or 192.168.10.50; Destination IP: 10.10.2.10
D. Source IP: 10.10.2.1; Destination IP: pool in the 172.16/16 network C
E. The request will be droped.
F. Source IP: 10.10.2.1; Destination IP: 10.10.2.10

問題 #4

What does the nsert XForwarded For?
option in an HTTP profile do?
What does the ?nsert XForwarded For?option in an HTTP profile do?

A. The client IP addresses are inserted into messages sent to remote syslog servers.
B. A BIG-IP self-IP is inserted in the source address field on the clint-side connection.
C. The client IP addresses are inserted into HTTP header.
D. A BIG-IP self-IP is inserted in the source address field on the server-sid connection.

問題 #5

Which statement is true concerning SNATs using SNAT pools and SNATs using automap?

A. SNAT s using a SNAT pool translate source addresses randomly to any of the addresses in the SNAT pool.
B. A .SNAT pool can contain virtual server addresses.
C. SNAT s using automap preferentially translate source addresses to non-floating self-IP addresses.
D. SNAT s using automap translate source addresses randomly to any of the BIG-IP's floating self-IP addresses.

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