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In conclusion
The F5 301B exam is your final step towards becoming a certified technical specialist or BIG-IP LTM: Local Traffic Manager. Prepare for the test and earn this certification with confidence using the official guide, free courses, and live training sessions offered by the vendor. Pass this last hurdle and have a promising career ahead.
The benefit in Obtaining the F5 301b Exam Certification
After passing F5 BIG-IP Local Traffic Manager (LTM) Specialist: Maintain & Troubleshoot 301b Exam candidates can get F5 Certified Technology Specialists certification. After getting F5 Certification candidates can get a job as an F5 Certified BIG-IP Administrator Network Engineer, F5 Certified BIG-IP Administrator Load Balancer/ADC, F5 Certified BIG-IP Administrator Architect and F5 Certified BIG-IP Administrator Engineer. Candidate can earn $74,000 per month.
Recognizing the Certification’s Role
F5 301B exam is associated with the F5-CTS BIG-IP Local Traffic Manager certification. Earning it is the ideal way to perk-up the career of a professional who has already become an F5 accredited administrator and looking for further enhancement options. The ideal audience for this certificate includes seasoned networking specialists capable to conduct basic-to-advanced troubleshooting tasks, VPN implementation, and others.
NEW QUESTION 71
An LTM Specialist wants to allow access to the Always On Management (AOM) from the network.
Which two methods should the LTM Specialist use to configure the AOM interface? (Choose two.)
- A. Log in to the Host via ssh, "ssh aom", and modify the network configuration file.
- B. Choose the network configurator in the AOM menu on the serial port.
- C. Configure the AOM IP from the front panel buttons and LCD.
- D. Configure the AOM network address in the GUI under System>Platform.
Answer: A,B
NEW QUESTION 72
-- Exhibit -
-- Exhibit --
Refer to the exhibit.
Users receive an error when attempting to connect to the website https://website.com. The website has a DNS record of 195.56.67.90. The upstream ISP has confirmed that there is nothing wrong with the routing between the user and the LTM device.
The following tcpdump outputs have been captured:
External Vlan, filtered on IP 168.210.232.5
00:25:07.598519 IP 168.210.232.5.33159 > 195.56.67.90.https: S 1920647964:1920647964(0) win 8192 <mss
1450,nop,nop,sackOK>
00:25:07.598537 IP 195.56.67.90.https > 168.210.232.5.33159: S 2690691360:2690691360(0) ack
1920647965 win 4350 <mss 1460,sackOK,eol>
00:25:07.598851 IP 168.210.232.5.33160 > 195.56.67.90.https: S 2763858764:2763858764(0) win 8192 <mss
1450,nop,nop,sackOK>
00:25:07.598858 IP 195.56.67.90.https > 168.210.232.5.33160: S 1905576176:1905576176(0) ack
2763858765 win 4350 <mss 1460,sackOK,eol>
Internal Vlan, filtered on IP 168.210.232.5
00:31:46.171124 IP 168.210.232.5.33202 > 192.168.100.20.http: S 2389057240:2389057240(0) win 4380
<mss 1460,nop,wscale 0,sackOK,eol>
What is the problem?
- A. The firewall is dropping the connection coming from the pool members returned to the client.
- B. The filters on the tcpdumps are incorrect.
- C. The DNS entry for website.com is incorrect.
- D. The subnet masks of the pool members of pool WebServices1 and the f5 'Internal' Vlan are incorrect.
- E. The virtual server 'WEBSERVICES1' is listening on the incorrect port.
Answer: A
NEW QUESTION 73
A stand-alone LTM device is to be paired with a second LTM device to create an active/standby pair. The current stand-alone LTM device is in production and has several VLANs with floating IP addresses configured. The appropriate device service clustering (DSC) configurations are in place on both LTM devices.
Which two non-specific DSC settings should the LTM Specialist configure on the second LTM device to ensure no errors are reported when attempting to synchronize for the first time? (Choose two.)
- A. pools
- B. self IP addresses
- C. VLANs
- D. default route
Answer: B,C
NEW QUESTION 74
-- Exhibit -
-- Exhibit -
Refer to the exhibits.
When observing the AVR statistics for the HTTPS_VS, an LTM Specialist realizes that HTTP status codes are NOT being recorded.
How should the LTM Specialist modify the configuration to record the HTTP status codes?
- A. assign a streaming profile to the virtual server
- B. enable Statistics Logging Type, External on the analytics profile
- C. enable Collected Entities, Response Codes on the analytics profile
- D. assign client SSL and server SSL profiles to the virtual server
Answer: C
NEW QUESTION 75
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 set /sys db log.tcpdump.level status informational
- B. tmsh set /sys db log.tcpdump.level value informational
- C. tmsh modify /sys db log.tcpdump.level value informational
- D. tmsh modify /sys db log.tcpdump.level status informational
Answer: C
NEW QUESTION 76
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 other virtual servers are affected?
- A. 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. - B. The LTM device is under light load. The traffic should be mirrored to a dedicated sniffing device. On the sniffing device, the packet capture tcpdump -ni vlan301 should be executed.
- C. The packet capture tcpdump -ni vlan301 should be executed on the command line interface. There is no need to change profiles or PVA acceleration.
- D. The standard FastL4 profile should have PVA acceleration disabled. Then the packet capture tcpdump -ni vlan301 should be executed on the command line interface.
Answer: A
NEW QUESTION 77
-- Exhibit-
-- Exhibit --
Refer to the exhibits.
An LTM Specialist is troubleshooting an issue with one of the virtual servers on an LTM device, and all requests are receiving errors. Testing directly against the server generates no errors. The LTM Specialist has captured the request and response on both client and server sides of the LTM device.
What should the LTM Specialist do to fix this issue?
- A. Assign OneConnect profile to the virtual server.
- B. Set "redirect-rewrite" to "selective" in http profile.
- C. Configure SNAT Automap on the virtual server.
- D. Remove "header-erase Host" in http profile.
Answer: D
NEW QUESTION 78
An LTM Specialist is investigating reports from users that SSH connections are being terminated unexpectedly. SSH connections are load balanced through a virtual server. The users experiencing this problem are running SQL queries that take upwards of 15 minutes to return with no screen output. The virtual server is standard with a pool associated and no other customizations.
What is causing the SSH connections to terminate?
- A. The virtual server has no persistence.
- B. The pool has Reselect Retries set to 0.
- C. TCP idle timeout
- D. UDP IP ToS
Answer: C
NEW QUESTION 79
The end users of a web application need to verify that their browsers received the complete message-body from the web server.
Which HTTP header will accomplish this?
- A. Range
- B. Accept-Ranges
- C. Content-Length
- D. Expect
Answer: C
NEW QUESTION 80
A device group is made up of four members: LTM-A, LTM-B, LTM-C, and LTM-D. An LTM Specialist makes a configuration change on LTM-B. Later, a different LTM Specialist notices a "changes pending" message on all devices. When logged into LTM-D, the LTM Specialist attempts to config-sync to the device group. The sync operation fails.
Why is the LTM Specialist on LTM-D unable to synchronize the configuration to the group?
- A. The changes made on LTM-B are invalid.
- B. NTP is NOT configured on the devices in the group.
- C. LTM-D has the lowest commit-id of the group.
- D. LTM-B is the device eligible to initiate a config-sync.
Answer: D
NEW QUESTION 81
An LTM device is deployed in a one-armed topology. The virtual server, clients, and web servers are connected on the LTM device internal VLAN. A client tries to connect to the virtual server and is unable to establish a connection. A packet capture from the LTM device internal VLAN shows that the HTTP request is being forwarded to the web server.
From which two additional locations should protocol analyzer data be collected? (Choose two.)
- A. network interface of web server
- B. network interface of client machine
- C. any network interface of the Internet firewall
- D. external VLAN interface of LTM device
- E. internal VLAN interface of LTM device
Answer: A,B
NEW QUESTION 82
-- Exhibit -
-- Exhibit -Refer to the exhibit.
The decoded TCPDump capture is a trace of a failing health monitor. The health monitor is sending the string shown in the capture; however, the server response is NOT as expected. The receive string is set to 'SERVER IS UP'.
What is the solution?
- A. The /test_page.html does NOT exist on the web server and should be added.
- B. Incorrect syntax in send string. 'HTTP/1.1' should be 'HTTP1.1'.
- C. Incorrect syntax in send string. 'Connection: Close' should be 'Connection: Open'.
- D. The GET request Host header field requires a host name.
Answer: A
NEW QUESTION 83
An LTM Specialist is creating a custom EAV monitor.
In which directory should the LTM Specialist upload the script?
- A. /usr/monitor
- B. /usr/bin/monitors
- C. /usr/monitors
- D. /config/templates
- E. /config/monitors
Answer: E
NEW QUESTION 84
-- Exhibit -
-- Exhibit -
Refer to the exhibit.
A company uses a complex piece of client software that connects to one or more virtual servers (VS) hosted on an LTM device. The client software is experiencing issues. An LTM Specialist is tasked with finding the cause of the problem.
The LTM Specialist has the tcpdump extract and knows the client software has at least one connection to a VS on port 1990. However, when a tcpdump runs on the internal VLAN, there is no record of port 1990 in the tcpdump.
Why is there no record of port 1990 in the tcpdump?
- A. The LTM device performs a Port Address Translation (PAT).
- B. Port 1990 is a well-known port, so its use is restricted.
- C. The LTM device drops the connection.
- D. The LTM device performs a Network Address Translation (NAT).
- E. Explanation:
-- Exhibit -
-- Exhibit -Refer to the exhibit. A company uses a complex piece of client software that connects to one or more virtual servers
hosted on an LTM device. The client software is experiencing issues. An LTM Specialist must determine the cause of the problem.
The LTM Specialist has the tcpdump extract and knows the client source IP is 168.210.232.5. Assuming no wildcard virtual servers, how many distinct virtual servers does the client connect to on the LTM device?
A.2
B.3
C.4
D.6
Answer: A
NEW QUESTION 85
An LTM Specialist connects to an LTM device via the serial console cable and receives unreadable output.
The LTM Specialist is using the appropriate cable and connecting it to the correct serial port.
Which command should the LTM Specialist run through ssh to verify that the baud rate settings for the serial port are correct on the LTM device?
- A. tmsh edit /sys console
- B. tmsh show /ltm console
- C. tmsh show /sys console
- D. tmsh list /sys console
Answer: C
NEW QUESTION 86
These log entries can have different root causes:
Jun 28 05:01:21 LTM_A notice mcpd[27545]: 0107143a:5: CMI reconnect timer: enabled
Jun 28 05:01:21 LTM_A notice mcpd[27545]: 01071431:5: Attempting to connect to CMI peer 1.1.1.2 port 6699
Jun 28 05:01:21 LTM_A notice mcpd[27545]: 01071432:5: CMI peer connection established to 1.1.1.2 port 6699
Jun 28 05:01:26 LTM_A notice mcpd[27545]: 0107143a:5: CMI reconnect timer: disabled, all peers are connected
Which two commands should be used to obtain additional information on these entries? (Choose two.)
- A. bigstart status mcpd
- B. tmsh modify /sys db log.mcpd.level value debug
- C. tmsh modify /sys db log.cmi.level value debug
- D. tmsh show /sys mcpd
Answer: A,B
NEW QUESTION 87
A web application is meant to log the URI of the resource that responded to the client's initial Request-URI.
Which HTTP header will supply this information?
- A. Server
- B. Referer
- C. Via
- D. Trailer
Answer: B
NEW QUESTION 88
An LTM Specialist is customizing local traffic logging.
Which traffic management OS alert level provides the most detail?
- A. Alert
- B. Informational
- C. Notice
- D. Critical
- E. Emergency
Answer: B
NEW QUESTION 89
An LTM Specialist loads a UCS file generated on a different LTM device and receives the following error message:
"mcpd[2395]: 01070608:0: License is not operational (expired or digital signature does not match contents)"
Which command should the LTM Specialist use to prevent the error?
- A. tmsh show /sys license
- B. bigpipe config save /config.ucs
- C. tmsh load /sys /ucs rma <path/to/UCS>
- D. tmsh load /sys ucs <path/to/UCS> no-license
- E. tmsh show /sys hardware
Answer: D
NEW QUESTION 90
An LTM Specialist has configured a virtual server for www.example.com, load balancing connections to a pool of application servers that provide a shopping cart application. Cookie persistence is enabled on the virtual server. Users are able to connect to the application, but the user's shopping cart fails to update. A traffic capture shows the following:
Request:
GET /cart/updatecart.php HTTP/1.1
Host: www.example.com
Connection: keep-alive
Cache-Control: max-age=0
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_5) AppleWebKit/537.4 (KHTML, like Gecko) Chrome/22.0.1229.94 Safari/537.4 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-EncodinG. gzip,deflate,sdch Accept-LanguagE. en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3 CookiE. BIGipServerwebstore_pool=353636524.20480.0000 Response:
HTTP/1.1 200 OK
DatE. Wed, 24 Oct 2012 18:00:13 GMT
Server: Apache/2.2.22 (Ubuntu)
X-Powered-By: PHP/5.3.10-1ubuntu3.1
Set-CookiE. cartID=647A5EA6657828C69DB8188981CB5; path=/; domain=wb01.example.com Keep-AlivE. timeout=5, max=100 Connection: Keep-Alive Content-TypE. text/html No changes can be made to the application.
What should the LTM Specialist do to resolve the problem?
- A. Enable source address persistence as a fallback persistence method.
- B. Create a universal persistence profile on the cartID cookie.
- C. Use an iRule to rewrite the cartID cookie domain.
- D. Create a cookie persistence profile with "match across services" enabled.
Answer: C
NEW QUESTION 91
-- Exhibit-
-- Exhibit -
Refer to the exhibits.
Users are able to access the application when connecting directly to the web server but are unsuccessful when connecting to the virtual server. Return traffic bypasses the LTM device using Layer 2 nPath routing.
Which configuration change resolves this problem?
- A. Enable a SNAT pool on the LTM device.
- B. Configure the virtual server to listen on port 80 on the LTM device.
- C. Disable address translation on the LTM device.
- D. Configure the VIP address on the loopback interface of the web server.
- E. Configure a route on the web server to the client subnet.
Answer: D
NEW QUESTION 92
An LTM device has been configured to log the reasons for generating TCP RST packets.
The following log entry occurs:
"01230140:3: RST sent from 192.168.1.100:80 to 192.168.1.124:39272, [0x112d82a:1721] {peer} TCP RST from remote system."
Which condition will trigger this log entry?
- A. The LTM device has reached the maximum number of allowed attempts to send the data segment to the affected TCP connection.
- B. The host at the other end terminated the TCP connection.
- C. A virtual server connection limit has been reached.
- D. The LTM device reset the connection because no pool members are available.
Answer: B
NEW QUESTION 93
The pool members are serving up simple static web content. The current virtual server configuration is given as follows: tmsh list ltm virtual simple
ltm virtual simple { destination 10.10.10.10:80 ip-protocol tcp mask 255.255.255.255 profiles { http { } httpcompression { } oneconnect { } tcp { } } snat automap vlans-disabled }
tmsh list ltm pool simple_pool ltm pool simple_pool { members {
10.10.10.11:80 {
address 10.10.10.11 }
10.10.10.12:80
{
address 10.10.10.12 }
10.10.10.12:80
{
address 10.10.10.13 }
}
}
Which three objects in the virtual server configuration can be removed without disrupting functionality of the virtual server? (Choose three.)
- A. http
- B. httpcompression
- C. tcp
- D. snat automap
- E. oneconnect
Answer: A,B,E
NEW QUESTION 94
......
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