[UPDATED Mar-2023] Best Value Available Preparation Guide for 301b Exam
1 Full 301b Practice Test and 210 Unique Questions, Get it Now!
Exam Domains Overview
301B exam is based on three domains and tries to testify candidate’s knowledge on various topics, including the following:
- Maintain Application and LTM Device Health
This first section intends to check how the candidate determines the appropriate profile setting modifications in a given scenario along with sub-set of an LTM configuration, LTM device statistics, finding out the appropriate upgrade and recovery steps, ways to minimize application outages, benefits of custom alerting, and setting up custom alerts.
AVR alerting capabilities, vCMP environment upgrading, SCF and UCS files, performance statistics, and buffer settings in the TCP profile are some of the skills included in this exam domain.
- Troubleshoot basic performance issues
The last section assesses if the test-taker is aware of LTM device logs issues, can find what can cause them, and what are the ways to construct a viable solution. Other skills needed include the ability to find out why LTM device failover problems arise as well as high availability and/or sync failure. Finally, applicants should know how to interpret log file messages, and more.
- Troubleshoot basic hardware issues
As the title suggests, the second module is dedicated to the key issues and some of the most common ways to deal with them. This part of the outline is quite extensive and consists of 15 sub-domains. By going through all of them, the applicants will learn more about what all it takes to determine which iRule to use to resolve an application issue, the iRule functionality, how to correctly interpret the AVR information for defining performance issues as well as the LTM device misconfiguration, and how to choose the appropriate HTTP/HTTPS application headers.
Finding out the HTTP/HTTPS application errors & their solutions, comparing the traces to determine the root cause of an HTTP/HTTPS application problem and the best way to resolve it, finding out the right protocol analyzer tool, and identifying from where to gather the protocol analyzer data are also covered well in this exam domain along with the topic such as how to define monitor issues and solutions for them.
NEW QUESTION 117
-- 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. Configure SNAT Automap on the virtual server.
- B. Assign OneConnect profile to the virtual server.
- C. Set "redirect-rewrite" to "selective" in http profile.
- D. Remove "header-erase Host" in http profile.
Answer: D
NEW QUESTION 118
-- Exhibit -
-- Exhibit -
Refer to the exhibits.
How should the LTM Specialist minimize the configuration?
- A. Remove the pool member level monitors.
- B. The configuration is as minimized as possible.
- C. Create a single monitor and apply it to each pool member.
- D. Create a single monitor, apply it to the pool, and remove the pool member level monitors.
Answer: D
NEW QUESTION 119
-- Exhibit -
-- Exhibit --
Refer to the exhibit.
An LTM Specialist has created a virtual server to load balance traffic to a pool of HTTPS servers. The servers use client certificates for user authentication. The virtual server has clientssl, serverssl, and http profiles enabled. Clients are unable to connect to the application through the virtual server. Clients are able to connect to the application servers directly.
What is the root cause of the problem?
- A. The clientssl profile is NOT set to require a client certificate.
- B. The application server does NOT support 2048-bit keys.
- C. The application server does NOT see the client certificate due to SSL offload.
- D. The LTM device does NOT trust the issuing CA of the client certificate.
Answer: C
NEW QUESTION 120
-- 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 must determine the cause of the problem.
The LTM Specialist is seeing a client source IP of 168.210.232.5 in the tcpdump. However, the client source IP is actually 10.123.17.12.
Why does the IP address of 10.123.17.12 fail to appear in the tcpdump?
- A. The Secure Network Address Translation (SNAT) pool on the virtual server is activated.
- B. The individual's data stream is being routed to the LTM device by a means other than the default route.
- C. The LTM device performed NAT on the individual's IP address.
- D. Network Address Translation (NAT) has occurred in the path between the client and the LTM device.
Answer: D
NEW QUESTION 121
-- Exhibit-
-- Exhibit --
Refer to the exhibit.
An LTM Specialist is upgrading the LTM devices.
Which device should be upgraded first?
- A. Device D
- B. Device A
- C. Device B
- D. Device C
Answer: D
NEW QUESTION 122
-- Exhibit - -- Exhibit -
Refer to the exhibit.
An LTM Specialist is troubleshooting an HTTP monitor that is marking a pool member as down. Connecting to the pool member directly through a browser shows the application is up and functioning correctly.
ltm monitor http http_mon { defaults-from http destination *:* interval 5 recv "200 OK" send "GET /\\r\\n" time-until-up 0 timeout 16
}
What is the issue?
- A. The pool member is responding without HTTP headers.
- B. The HTTP headers are compressed.
- C. The pool member is responding with a 404.
- D. The request is NOT being received by the pool member.
Answer: A
NEW QUESTION 123
An LTM device has a virtual server configured as a Performance Layer 4 virtual listening on 0.0.0.0:0 to perform routing of packets to an upstream router. The client machine at IP address 192.168.0.4 is attempting to contact a host upstream of the LTM device on IP address 10.0.0.99.
The network flow is asymmetrical, and the following TCP capture displays:
# tcpdump -nnni 0.0 'host 192.168.0.4 and host 10.0.0.99'
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on 0.0, link-type EN10MB (Ethernet), capture size 96 bytes
05:07:55.499954 IP 192.168.0.4.35345 > 10.0.0.99.443: S 3205656213:3205656213(0) ack
3267995082 win 1480
05:07:55.499983 IP 10.0.0.99.443 > 192.168.0.4.35345: R 1:1(0) ack 1 win 0
05:07:56.499960 IP 192.168.0.4.35345 > 10.0.0.99.443: S 3205656213:3205656213(0) ack
3267995082 win 1480
05:07:56.499990 IP 10.0.0.99.443 > 192.168.0.4.35345: R 1:1(0) ack 1 win 0
4 packets captured
Which option within the fastL4 profile needs to be enabled by the LTM Specialist to prevent the LTM device from rejecting the flow?
- A. Generate Initial Sequence Number
- B. Reset on Timeout
- C. Loose Initiation
- D. Loose Close
Answer: C
NEW QUESTION 124
Which two items can be logged by the Application Visibility Reporting analytics profile? (Choose two.)
- A. HTTP version
- B. Per Virtual Server CPU Utilization
- C. HTTP Response Codes
- D. User Agent
Answer: C,D
NEW QUESTION 125
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. A virtual server connection limit has been reached.
- B. The LTM device reset the connection because no pool members are available.
- C. The LTM device has reached the maximum number of allowed attempts to send the data segment to the affected TCP connection.
- D. The host at the other end terminated the TCP connection.
Answer: D
Explanation:
Explanation
NEW QUESTION 126
Which two subsystems could the LTM Specialist utilize to access an LTM device with lost management interface connectivity? (Choose two.)
- A. SCCP
- B. AOM
- C. ALOM
- D. ILO
Answer: A,B
NEW QUESTION 127
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. Content-Length
- B. Accept-Ranges
- C. Range
- D. Expect
Answer: A
NEW QUESTION 128
-- 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 > Hotfix 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 > Image 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 129
Which two alerting capabilities can be enabled from within an application visibility reporting (AVR) analytics profile? (Choose two.)
- A. LCD panel alert
- B. high speed logging (HSL)
- C. sFlow
- D. SNMP
- E. e-mail
Answer: D,E
NEW QUESTION 130
-- 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 Network Address Translation (NAT).
- B. The LTM device performs a Port Address Translation (PAT).
- C. The LTM device drops the connection.
- D. Port 1990 is a well-known port, so its use is restricted.
Answer: B
NEW QUESTION 131
-- Exhibit-
-- Exhibit -
Refer to the exhibit.
An LTM Specialist is troubleshooting an HTTP monitor that is marking a pool member as down. Connecting to the pool member directly through a browser shows the application is up and functioning correctly.
How should the send string be modified to correct this issue?
- A. GET /\r\nHTTP/1.0\r\n\r\n
- B. GET / HTTP/1.0\r\n\r\n
- C. GET /\r\n\r\n
- D. GET /\r\nHost: \r\n\r\n
Answer: B
NEW QUESTION 132
-- Exhibit-
-- Exhibit -
Refer to the exhibit.
A pair of LTM devices are deployed in a high-availability (HA) pair as the diagram shows. After inserting a new rule on the firewalls, the LTM devices become Standby. The rule drops alloutbound sessions to the Internet. Only inbound connections are allowed from the Internet. There are no other changes to the environment.
What triggered the LTM device failover?
- A. VLAN Failsafe
- B. Gateway Failsafe
- C. Auto Failback
- D. HA Group
Answer: B
NEW QUESTION 133
A new VLAN vlan301 has been configured on a highly available LTM device in partition ApplicationA. A new directly connected backend server has been placed on vlan301. However, there are connectivity issues pinging the default gateway. The VLAN self IPs configured on the LTM devices are 192.168.0.251 and 192.168.0.252 with floating IP 192.168.0.253. The LTM Specialist needs to perform a packet capture to assist with troubleshooting the connectivity.
Which command should the LTM Specialist execute on the LTM device command line interface to capture the attempted pings to the LTM device default gateway on VLAN vlan301?
- A. tcpdump -ni /ApplicationA/vlan301 'host 192.168.0.251 or host 192.168.0.252'
- B. tcpdump -ni /ApplicationA/vlan301 'host 192.168.0.253'
- C. tcpdump -ni vlan301 'host 192.168.0.253'
- D. tcpdump -ni vlan301 'host 192.168.0.251 or host 192.168.0.252'
Answer: B
NEW QUESTION 134
-- 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 > Hotfix 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 > Image 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 135
......
Get Instant Access to 301b Practice Exam Questions: https://www.examcollectionpass.com/F5/301b-practice-exam-dumps.html
The Best 301b Exam Study Material Premium Files and Preparation Tool: https://drive.google.com/open?id=1REhcs3sLx3VLcqWoO1QuLh7zzIFs6MX8