Real F5 301b Exam Questions [Updated 2021]
301b Exam Dumps Pass with Updated 2021 LTM Specialist: Maintain & Troubleshoot
Who should take the F5 301b exam
The F5 BIG-IP Local Traffic Manager (LTM) Specialist: Maintain & Troubleshoot 301b Exam certification is an internationally-recognized validation that identifies persons who earn it as possessing skilled as F5 Certified Technology Specialists. If a candidate wants significant improvement in career growth needs enhanced knowledge, skills, and talents. The F5 BIG-IP Local Traffic Manager (LTM) Specialist: Maintain & Troubleshoot 301b Exam certification provide proof of this advanced knowledge and skill. If a candidate passed the prerequisite of this exam that is F5 LTM Specialist: Architect, Setup, and Deploy 301a Exam and has knowledge of associated technologies and skills that are required to pass F5 BIG-IP Local Traffic Manager (LTM) Specialist: Maintain & Troubleshoot 301b Exam then he should take this exam.
NEW QUESTION 117
-- Exhibit -
-- Exhibit --
Refer to the exhibit.
An LTM Specialist is working on an LTM 11.0.0 installation and has identified a security vulnerability as shown in the exhibit. The LTM Specialist is tasked with applying the latest available hotfix to resolve the problem.
Which procedure resolves the problem?
- A. Browse to System > Software Management > Image List.
Import TMOS 11.2.0 to the available hotfix images.
Select the imported hotfix image and installation location and click Install. - B. Browse to System > Software Management > Hotfix List.
Import 11.1.0.HF3 to the available hotfix images.
Select the imported hotfix image and installation location and click Install. - C. Browse to System > Software Management > Hotfix List.
Import TMOS 11.2.0 to the available hotfix images.
Select the imported hotfix image and installation location and click Install. - D. Browse to System > Software Management > Image List.
Import 11.1.0.HF3 to the available hotfix images.
Select the imported hotfix image and installation location and click Install.
Answer: B
NEW QUESTION 118
-- Exhibit -
-- Exhibit --
Refer to the exhibit.
An LTM Specialist is reviewing the 'test' partition.
Which objects, in order, can be removed from the partition?
- A. delete pool test1_pool, delete node 10.1.1.2
- B. delete virtual test1_vs, delete pool test2_pool, delete node 10.1.1.1
- C. delete node 10.1.1.2, delete pool test2_pool
- D. delete pool test1_pool, delete node 10.1.1.2, delete node 10.1.1.1
- E. delete pool test1_pool, delete pool test2_pool, delete node 10.1.1.3
Answer: A
NEW QUESTION 119
-- Exhibit -
-- Exhibit --
Refer to the exhibit.
Which step should an LTM Specialist take next to finish upgrading to HD1.3?
- A. Activate HD1.3
- B. Install hotfix to HD1.3
- C. Relicense HD1.3
- D. Install image to HD1.3
Answer: A
NEW QUESTION 120
Which iRule will reject any connection originating from a 10.0.0.0/8 network?
- A. when CLIENT_ACCEPTED {
set remote_ip [IP::addr [IP::remote_addr] mask 8]
switch $remote_ip {
"10.0.0.0" { reject }
"11.0.0.0" { pool pool_http1}
default { pool http_pool }
}
} - B. when CLIENT_ACCEPTED {
set remote_ip [IP::addr [IP::client_addr] mask 255.0.0.0]
switch $remote_ip {
"10.0.0.0" { reject }
"11.0.0.0" { pool pool_http1}
default { pool http_pool }
}
} - C. when CLIENT_ACCEPTED {
set remote_ip [IP::addr [IP::local_addr] mask 8]
switch $remote_ip {
"10.0.0.0" { reject }
"11.0.0.0" { pool pool_http1}
default { pool http_pool }
}
} - D. when CLIENT_ACCEPTED {
set remote_ip [IP::addr [IP::local_addr] mask 255.0.0.0]
switch $remote_ip {
"10.0.0.0" { reject }
"11.0.0.0" { pool pool_http1}
default { pool http_pool }
}
}
Answer: B
NEW QUESTION 121
An LTM Specialist has just manually failed the active LTM device over to the standby LTM device.
The LTM Specialist notices the newly active LTM device is NOT currently receiving traffic. The LTM Specialist verifies the newly active device is responding to ARP but still no traffic is hitting the virtual servers. The LTM Specialist also notices that the virtual servers eventually start responding.
What should be added to the configuration to resolve the problem?
- A. vlan failsafe
- B. connection mirroring
- C. network failover
- D. floating self IP
- E. MAC masquerading
Answer: E
NEW QUESTION 122
An LTM Specialist is troubleshooting a problem on an eCommerce website. The user browses the online store using port 80, adding items to the shopping cart. The user then clicks the "Checkout" button on the site, which redirects the user to port 443 for the checkout process. Suddenly, the user's shopping cart is shown as empty.
The shopping cart data is stored in memory on the server, and the default source address persistence profile is used on both virtual servers.
How should the LTM Specialist resolve this issue?
- A. Create a custom persistence profile and enable "Match Across Services."
- B. Add an HTTP profile to both virtual servers.
- C. Create a custom persistence profile and enable "Map Proxies."
- D. Enable SNAT Automap on both virtual servers.
Answer: A
NEW QUESTION 123
The LTM device is configured to provide load balancing to a set of web servers that implement access control lists (ACL) based on the source IP address of the client. The ACL is at the network level and the web server is configured to send a TCP reset back to the client if it is NOT permitted to connect.
The virtual server is configured with the default OneConnect profile.
The ACL is defined on the web server as:
Permit: 192.168.136.0/24
Deny: 192.168.116.0/24
The packet capture is taken of two individual client flows to a virtual server with IP address 192.168.136.100.
Client A - Src IP 192.168.136.1 - Virtual Server 192.168.136.100:
Clientside:
09:35:11.073623 IP 192.168.136.1.55684 > 192.168.136.100.80: S 869998901:869998901(0) win 8192 <mss
1460,nop,wscale 2,nop,nop,sackOK>
09:35:11.073931 IP 192.168.136.100.80 > 192.168.136.1.55684: S 2273668949:2273668949(0) ack
869998902 win 4380 <mss 1460,nop,wscale 0,sackOK,eol>
09:35:11.074928 IP 192.168.136.1.55684 > 192.168.136.100.80: . ack 1 win 16425
09:35:11.080936 IP 192.168.136.1.55684 > 192.168.136.100.80: P 1:299(298) ack 1 win 16425
09:35:11.081029 IP 192.168.136.100.80 > 192.168.136.1.55684: . ack 299 win 4678 Serverside:
09:35:11.081022 IP 192.168.136.1.55684 > 192.168.116.128.80: S 685865802:685865802(0) win 4380 <mss
1460,nop,wscale 0,sackOK,eol>
09:35:11.081928 IP 192.168.116.128.80 > 192.168.136.1.55684: S 4193259095:4193259095(0) ack
685865803 win 5840 <mss 1460,nop,nop,sackOK,nop,wscale 6>
09:35:11.081943 IP 192.168.136.1.55684 > 192.168.116.128.80: . ack 1 win 4380
09:35:11.081955 IP 192.168.136.1.55684 > 192.168.116.128.80: P 1:299(298) ack 1 win 4380
09:35:11.083765 IP 192.168.116.128.80 > 192.168.136.1.55684: . ack 299 win 108 Client B - Src IP 192.168.116.1 - Virtual Server 192.168.136.100:
Clientside:
09:36:11.244040 IP 192.168.116.1.55769 > 192.168.136.100.80: S 3320618938:3320618938(0) win 8192
<mss 1460,nop,wscale 2,nop,nop,sackOK>
09:36:11.244152 IP 192.168.136.100.80 > 192.168.116.1.55769: S 3878120666:3878120666(0) ack
3320618939 win 4380 <mss 1460,nop,wscale 0,sackOK,eol>
09:36:11.244839 IP 192.168.116.1.55769 > 192.168.136.100.80: . ack 1 win 16425
09:36:11.245830 IP 192.168.116.1.55769 > 192.168.136.100.80: P 1:299(298) ack 1 win 16425
09:36:11.245922 IP 192.168.136.100.80 > 192.168.116.1.55769: . ack 299 win 4678 Serverside:
09:36:11.245940 IP 192.168.136.1.55684 > 192.168.116.128.80: P 599:897(298) ack 4525 win 8904
09:36:11.247847 IP 192.168.116.128.80 > 192.168.136.1.55684: P 4525:5001(476) ack 897 win 142 Why was the second client flow permitted by the web server?
- A. SNAT automap was enabled on the virtual server.
- B. A global SNAT is defined.
- C. A source address persistence profile is assigned to the virtual server.
- D. The idle TCP session from the first client was re-used.
Answer: D
NEW QUESTION 124
The following decoded TCPDump capture shows the trace of a failing health monitor.
00:00:13.245104 IP 10.29.29.60.51947 > 10.0.0.12.http: P 1:59(58) ack 1 win 46 <nop,nop,timestamp
2494782300 238063789> out slot1/tmm3 lis
0x0000: 4500 006e 3b19 4000 4006 ce0c 0a1d 1d3c E..n;.@.@......<
0x0010: 0a00 000c caeb 0050 8be5 aca3 dd65 e3e1 .......P.....e..
0x0020: 8018 002e 1b41 0000 0101 080a 94b3 5b5c .....A........[\
0x0030: 0e30 90ad 4745 5420 2f74 6573 745f 7061 .0..GET./test_pa
0x0040: 6765 2e68 746d 6c20 4854 5450 312e 310d ge.html.HTTP1.1.
0x0050: 0a48 6f73 743a 200d 0a43 6f6e 6e65 6374 .Host:...Connect
0x0060: 696f 6e3a 2043 6c6f 7365 0d0a 0d0a 0105 ion:.Close......
0x0070: 0100 0003 00 .....
00:00:13.245284 IP 10.0.0.12.http > 10.29.29.60.51947: . ack 59 win 362 <nop,nop,timestamp 238063789
2494782300> in slot1/tmm3 lis
0x0000 0ffd 0800 4500 00c9 6f68 4000 8006 755d [email protected]]
0x0010 0a29 0015 0a29 0103 0050 e0d6 4929 90eb .)...)...P..I)..
0x0020 6f12 d83c 8019 fab3 9b31 0000 0101 080a o..<.....1......
0x0030 0068 4e10 5240 6150 4854 5450 2f31 2e31 .hN.R@aPHTTP/1.1
0x0040 2034 3030 2042 6164 2052 6571 7565 7374 .400.Bad.Request
0x0050 0d0a 436f 6e74 656e 742d 5479 7065 3a20 ..Content-Type:.
0x0060 7465 7874 2f68 746d 6c0d 0a44 6174 653a text/html..Date:
0x0070 2054 6875 2c20 3231 204a 616e 2032 3031 .Mon,.01.Jan.201
0x0080 3020 3138 3a35 383a 3537 2047 4d54 0d0a 2.00:00:01.GMT..
0x0090 436f 6e6e 6563 7469 6f6e 3a20 636c 6f73 Connection:.clos
0x00a0 650d 0a43 6f6e 7465 6e74 2d4c 656e 6774 e..Content-Lengt
0x00b0 683a 2032 300d 0a0d 0a3c 6831 3e42 6164 h:.20....<h1>Bad
0x00c0 2052 6571 7565 7374 3c2f 6831 3e .Request</h1>
The health monitor is sending the string shown in the capture; however, the server response is NOT as expected. The correct response should be an HTML page including the string 'SERVER IS UP'.
What is the issue?
- A. The /test_page.html does NOT exist on the web server.
- B. Incorrect syntax in send string. 'Connection: Close' should be 'Connection: Open'.
- C. The wrong HTTP version is specified in the send string. Version 1.2 should be used instead of version
1.1. - D. Incorrect syntax in send string. 'HTTP1.1' should be 'HTTP/1.1'.
Answer: D
NEW QUESTION 125
-- Exhibit -
-- Exhibit -
Refer to the exhibit.
Which profile could be removed or changed on this virtual server to reduce CPU load on the LTM device without increasing server side bandwidth usage?
- A. http
- B. optimized-caching
- C. tcp
- D. httpcompression
Answer: D
NEW QUESTION 126
-- Exhibit-
-- Exhibit -
Refer to the exhibit.
An LTM Specialist configures a virtual server to load balance to a pool of FTP servers. File transfers are failing. The virtual server is configured as follows:
ltm virtual ftp_vs { destination 10.10.1.103:ftp ip-protocol tcp mask 255.255.255.255 pool ftp_pool profiles { tcp { } } vlans-disabled }
Which change will resolve the problem?
- A. Add an FTP profile to the virtual server.
- B. Increase the TCP timeout value in the TCP profile.
- C. Enable loose initiation in the TCP profile.
- D. Add an FTP monitor to the pool.
Answer: A
NEW QUESTION 127
An LTM Specialist needs to modify the logging level for tcpdump execution events. Checking the BigDB Key, the following is currently configured:
sys db log.tcpdump.level {
value "Notice"
}
Which command should the LTM Specialist execute on the LTM device to change the logging level to informational?
- A. tmsh modify /sys db log.tcpdump.level status informational
- B. tmsh modify /sys db log.tcpdump.level value informational
- C. tmsh set /sys db log.tcpdump.level status informational
- D. tmsh set /sys db log.tcpdump.level value informational
Answer: B
NEW QUESTION 128
A web application requires knowledge of the client's true IP address for logging and analysis purposes.
Instances of the application that can decode X-Forwarded-For HTTP headers reside in pool_a, while pool_b instances assume the source IP is the true address of the client.
Which iRule provides the proper functionality?
- A. when HTTP_REQUEST {
if {[HTTP::header exists X-Forwarded-For]}{
pool pool_a
} else {
pool pool_b
}
} - B. when HTTP_DATA {
if {[HTTP::header exists X-Forwarded-For]}{
pool pool_a
} else {
pool pool_b
}
} - C. when HTTP_RESPONSE {
if {[HTTP::header exists X-Forwarded-For]}{
pool pool_a
} else {
pool pool_b
}
} - D. when HTTP_OPEN {
if {[HTTP::header exists X-Forwarded-For]}{
pool pool_a
} else {
pool pool_b
}
}
Answer: A
NEW QUESTION 129
A user is having issues with connectivity to an HTTPS virtual server. The virtual server is on the LTM device's external vlan, and the pools associated with the virtual server are on the internal vlan. An LTM Specialist does a tcpdump on the external interface and notices that the host header is incomplete.
In which location should the LTM Specialist put a traffic analyzer to gather the most pertinent data?
- A. internal VLAN
- B. server
- C. client machine
- D. external VLAN
Answer: C
NEW QUESTION 130
-- Exhibit -
-- Exhibit --
Refer to the exhibits.
Users are able to access the application when connecting to the virtual server but are unsuccessful when connecting directly to the application servers. The LTM Specialist wants to allow direct access to the application servers.
Why are users unable to connect directly to the application servers?
- A. The LTM device does NOT have an IP Forwarding virtual server on the Internal VLAN.
- B. The LTM device does NOT have a SNAT on the External VLAN.
- C. The router does NOT have a route to the server subnet.
- D. The web server does NOT have a correct default gateway.
- E. The LTM device does NOT have an IP Forwarding virtual server on the External VLAN.
Answer: D
NEW QUESTION 131
What does the following iRule do?
when CLIENT_ACCEPTED {
if { [matchclass [IP::client_addr] equals WebClient1-Whitelist1] }{
#log local0. "Valid client IP: [IP::client_addr] - forwarding traffic"
#Pool WebClient1
} else {
log local0. "Invalid client IP: [IP::client_addr] - discarding"
discard
}
}
- A. The iRule compares a client IP to a list. If the client IP is NOT on the list, the client is sent to Pool WebClient1. Otherwise, discard and log the discard.
- B. The iRule compares a client IP to a list. If the client IP is NOT on the list, discard and log the discard.
- C. The iRule compares a client IP to a list. If the client IP is on the list, discard and log the discard.
- D. The iRule compares a client IP to a list. If the client IP is on the list, the client is sent to Pool WebClient1. Otherwise, discard and log the discard.
Answer: B
NEW QUESTION 132
An LTM Specialist has just captured trace /var/tmp/trace.cap for site www.example.com while listening on virtual address 10.0.0.1:443 configured on partition ApplicationA. The data payload being captured is SSL encrypted.
Which command should the LTM Specialist execute to decrypt the data payload?
- A. ssldump -Aed -nr /var/tmp/trace.cap -k /config/filestore/files_d/Common_d/certificate_d/:Common:www.example.com.crt_1
- B. ssldump -Aed -nr /var/tmp/trace.cap -k /config/filestore/files_d/Common_d/certificate_key_d/:Common:www.example.com.key_1
- C. ssldump -Aed -nr /var/tmp/trace.cap -k /config/filestore/files_d/ApplicationA_d/certificate_key_d/:ApplicationA:www.example.com.k ey_1
- D. ssldump -Aed -nr /var/tmp/trace.cap -k /config/filestore/files_d/ApplicationA_d/certificate_d/:ApplicationA:www.example.com.crt_1
Answer: B
NEW QUESTION 133
......
F5 BIG-IP Local Traffic Manager (LTM) Specialist: Maintain & Troubleshoot 301b Exam
F5 BIG-IP Local Traffic Manager (LTM) Specialist: Maintain & Troubleshoot 301b Exam is related to F5 Certified Technology Specialists Certification. This 301b Exam validates the ability to do all major task such as design, implement, maintain and troubleshoot of advanced F5 product features to enhance the effectiveness of an Application Delivery Network. This 301b exam also tests the candidates have strong understanding the process of underlying principles from SSL-based VPN implementation to symmetric or asymmetric acceleration and have the ability to draw on that insight to integrate Local Traffic Manager into existing networks as well as new implementations. Network Administrator and Network Engineer. usually, hold or pursue this certification and you can expect the same job roles after completion of this certification.
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