301b Braindumps Real Exam Updated on Jan 13, 2022 with 210 Questions
Latest 301b PDF Dumps & Real Tests Free Updated Today
Exam Domains Overview
301B exam is based on three domains and tries to testify candidate’s knowledge on various topics, including the following:
- 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.
- 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 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.
How to book the F5 301b Exam
These are following steps for registering the F5 301b exam. Step 1: Visit to F5 Candidate Portal Exam Registration Step 2: Signup/Login to F5 account Step 3: After creating F5 account Select your testing center from PearsonVUE Step 4: Select Date, time and confirm with payment method
NEW QUESTION 54
Which command line interface command will check if the BIG-IP platform contains a packet velocity ASIC (PVA)?
- A. tmsh show /sys hardware | grep -i pva
- B. tmsh show /ltm hardware | grep -i pva
- C. bigpipe platform show | grep -i pva
- D. tmsh show /sys hardware pva status
Answer: A
Explanation:
Explanation
NEW QUESTION 55
The LTM Specialist is writing a custom HTTP monitor for a web application and has viewed the content by accessing the site directly via their browser. The monitor continually fails. The monitor configuration is:
ltm monitor http /Common/exampleComMonitor {
defaults-from /Common/http
destination *:*
interval 5
recv "Recent Searches"
send "GET /app/feed/current\?uid=20145 HTTP/1.1\\r\\nHost: www.example.com\\r\\nAccept-EncodinG.
gzip, deflate\\r\\nConnection: close\\r\\n\\r\\n"
time-until-up 0
timeout 16
}
A trace shows the following request and response:
Request:
GET /app/feed/current?uid=20145 HTTP/1.1
Host www.example.com
Accept-Encoding gzip, deflate
Connection: close
Response:
HTTP/1.1 302 Moved Temporarily
Date Wed, 17 Oct 2012 18:45:52 GMT
Server Apache
Location https://example.com/login.jsp
Content-Encoding gzip
Content-Type text/html;charset=UTF-8
Set-CookiE. JSESSIONID=261EFFBDA8EC3036FBCC22D991AC6835; Path=/app/feed/current?
uid=20145
What is the problem?
- A. The request does NOT include any cookies and the application is expecting a session cookie.
- B. The HTTP monitor does NOT support monitoring jsp pages.
- C. The request includes an Accept-Encoding so the server is responding with a gzipped result and LTM monitors CANNOT handle gzipped responses.
- D. The request does NOT include a User-Agent header.
Answer: A
NEW QUESTION 56
-- Exhibit -
-- Exhibit --
Refer to the exhibit.
An LTM Specialist has uploaded a qkview to F5 iHealth.
Within the GUI, what is the correct procedure to comply with the recommendation shown in the
exhibit?
- A. Obtain product version image from release.f5.com.
Overwrite existing image with new product version image.
Select product version image and click Install.
Select the available disk and volume set name. - B. Obtain product version image from downloads.f5.com.
Import product version image.
Install image onto BIG-IP platform.
Select product version image and click Install.
Select the available disk and volume set name. - C. Obtain product version image from images.f5.com.
Overwrite existing image with new product version image.
Select product version image and click Install.
Select the available disk and volume set name. - D. Log a call requesting the product version image via websupport.f5.com
Import product version image.
Install image onto BIG-IP platform.
Select product version image and click Install.
Select the available disk and volume set name.
Answer: B
NEW QUESTION 57
An LTM Specialist with the Administrator role and terminal access of "tmsh" logs in via ssh and is in the Traffic Manager Shell. The LTM Specialist wants to enter the bash shell to review log files.
Which command does the LTM Specialist need to run to access the bash shell?
- A. run /cli bash
- B. exit
- C. quit
- D. run /util bash
Answer: D
NEW QUESTION 58
A virtual server for a set of web services is constructed on an LTM device. The LTM Specialist has created an iRule and applied this iRule to the virtual server:
when HTTP_REQUEST {
switch [HTTP::uri] {
"/WS1/ws.jsp" {
log local0. "[HTTP::uri]-Redirected to JSP Pool"
pool JSP
}
default { log local0. "[HTTP::uri]-Redirected to Non-JSP Pool"
pool NonJSP
} } }
However, the iRule is NOT behaving as expected. Below is a snapshot of the log:
/WS1/ws.jsp-Redirected to JSP Pool /WS1/ws.jsp-Redirected to JSP Pool /WS1/ws.jsp-Redirected to JSP Pool /WS1/WS.jsp-Redirected to Non-JSP Pool /ws1/WS.jsp-Redirected to Non-JSP Pool /WS1/ws.jsp-Redirected to JSP Pool /ws1/ws.jsp-Redirected to Non-JSP Pool
What is the problem?
- A. The pool members of both pools need to be set up as case-insensitive members.
- B. The condition in the iRule is case sensitive.
- C. The 'switch' command in the iRule has been used incorrectly.
- D. The "Process Case-Insensitivity" option for the virtual server needs to be selected.
Answer: B
NEW QUESTION 59
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. floating self IP
- B. network failover
- C. connection mirroring
- D. vlan failsafe
- E. MAC masquerading
Answer: E
NEW QUESTION 60
An application is configured on an LTM device:
Virtual server: 10.0.0.1:80 (VLAN vlan301)
SNAT IP: 10.0.0.1
Pool members: 10.0.1.1:8080, 10.0.1.2:8080, 10.0.1.3:8080 (VLAN vlan302)
Which packet capture should the LTM Specialist perform on the LTM device command line interface to capture only server traffic specifically for this application?
- A. tcpdump -ni 0.0:nnn -s 0 'host 10.0.0.1' -w /var/tmp/trace.cap
- B. tcpdump -ni vlan301 -s 0 'port 80 and host 10.0.0.1' -w /var/tmp/trace.cap
- C. tcpdump -ni 0.0:nnn -s 0 '(port 80 and host 10.0.0.1) or (port 8080 and host 10.0.1.1 or host 10.0.1.2 or host 10.0.1.3)' -w /var/tmp/trace.cap
- D. tcpdump -ni vlan302 -s 0 'port 8080 and (host 10.0.1.1 or host 10.0.1.2 or host 10.0.1.3)' -w /var/tmp/trace.cap
Answer: D
NEW QUESTION 61
-- Exhibit -
-- Exhibit --
Refer to the exhibit.
A server administrator notices that one server is intermittently NOT being sent any HTTP requests. The server logs display no issues. The LTM Specialist notices log entries stating the node (172.16.20.1) status cycling between down and up. The pool associated with the virtual server (10.10.1.100) has a custom HTTP monitor applied.
Which tcpdump filter will help trace the monitor?
- A. tcpdump -i internal port 80 and host 172.16.1.31
- B. tcpdump -i external port 80 and host 10.10.1.100
- C. tcpdump -i internal port 80 and host 172.16.1.33
- D. tcpdump -i external port 80 and host 172.16.20.1
Answer: A
NEW QUESTION 62
-- 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 63
-- Exhibit- -- Exhibit -
Refer to the exhibit.
An LTM Specialist is troubleshooting an issue with SSL and is receiving the error shown when connecting to the virtual server. When connecting directly to the pool member, clients do NOT receive this message, and the application functions correctly. The LTM Specialist exports theappropriate certificate and key from the pool member and imports them into the LTM device. The LTM Specialist then creates the Client SSL profile and associates it with the virtual server.
What is the issue?
- A. The SSL certificate and key have expired.
- B. The client CANNOT verify the certification path.
- C. The SSL certificate and key do NOT match.
- D. The common name on the SSL certificate does NOT match the hostname of the site.
Answer: B
NEW QUESTION 64
-- 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, delete node 10.1.1.1
- B. delete pool test1_pool, delete node 10.1.1.2
- C. delete pool test1_pool, delete pool test2_pool, delete node 10.1.1.3
- D. delete node 10.1.1.2, delete pool test2_pool
- E. delete virtual test1_vs, delete pool test2_pool, delete node 10.1.1.1
Answer: B
NEW QUESTION 65
-- Exhibit -
-- Exhibit -
Refer to the exhibit.
A pair of LTM devices is configured for HA.
What happens if the pool member server with IP address 10.0.0.4 becomes totally unresponsive to the active LTM device, but is still responsive to the standby LTM device?
- A. The HTTP application will be unavailable via the LTM device.
- B. The HA-group will disable the trunk my_trunk.
- C. The HA-group will initiate a fail-over because the threshold is set to 2.
- D. The HA-group will initiate a fail-over because the HA-Group score will be zero.
Answer: C
NEW QUESTION 66
-- Exhibit - -- Exhibit -
Refer to the exhibit.
A server administrator notices that one server is intermittently NOT being sent any HTTP requests. The server logs display no issues. The LTM Specialist notices log entries stating the node
(172.16.20.1) status cycling between down and up. The pool associated with the virtual server
(10.10.1.100) has a custom HTTP monitor applied.
Which tcpdump filter will help trace the monitor?
- A. tcpdump -i internal port 80 and host 172.16.1.31
- B. tcpdump -i external port 80 and host 10.10.1.100
- C. tcpdump -i internal port 80 and host 172.16.1.33
- D. tcpdump -i external port 80 and host 172.16.20.1
Answer: A
NEW QUESTION 67
An LTM Specialist is tasked with ensuring that the syslogs for the LTM device are sent to a remote syslog server.
The following is an extract from the config file detailing the node and monitor that the LTM device is using for the remote syslog server:
monitor
Syslog_15002 {
defaults from udp
dest *:15002
}
node 91.223.45.231 {
monitor Syslog_15002
screen RemoteSYSLOG
}
There seem to be problems communicating with the remote syslog server. However, the pool monitor shows that the remote server is up.
The network department has confirmed that there are no firewall rules or networking issues preventing the LTM device from communicating with the syslog server. The department responsible for the remote syslog server indicates that there may be problems with the syslog server. The LTM Specialist checks the BIG-IP LTM logs for errors relating to the remote syslog server. None are found. The LTM Specialist does a tcpdump:
tcpdump -nn port 15002, with the following results:
21:28:36.395543 IP 192.168.100.100.44772 > 91.223.45.231.15002: UDP, length 19
21:28:36.429073 IP 192.168.100.100.39499 > 91.223.45.231.15002: UDP, length 169
21:28:36.430714 IP 192.168.100.100.39499 > 91.223.45.231.15002: UDP, length 181
21:28:36.840524 IP 192.168.100.100.39499 > 91.223.45.231.15002: UDP, length 169
21:28:36.846547 IP 192.168.100.100.39499 > 91.223.45.231.15002: UDP, length 181
21:28:39.886343 IP 192.168.100.100.39499 > 91.223.45.231.15002: UDP, length 144 NotE. 192.168.100.100 is the self IP of the LTM device.
Why are there no errors for the remote syslog server in the log files?
- A. The monitor type used is inappropriate.
- B. The "verbose" logging option needs to be enabled for the pool.
- C. The -log option for tcpdump needs to be used.
- D. When the remote syslog sever fails, it returns to service before the timeout for the monitor has expired.
Answer: A
NEW QUESTION 68
Given a tcpdump on an LTM device from both sides of a connection on the External and Internal VLANs, how should an LTM Specialist determine if SNAT is enabled for a particular pool?
- A. by checking to see if the Destination port is carried through from the External Vlan to the Internal Vlan
- B. by checking to see if the Source IP is carried through from the External Vlan to the Internal Vlan
- C. by checking to see if the Source port is carried through from the External Vlan to the Internal Vlan
- D. by checking to see if the Destination IP is carried through from the External Vlan to the Internal Vlan
Answer: B
NEW QUESTION 69
-- 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 image to HD1.3
- C. Install hotfix to HD1.3
- D. Relicense HD1.3
Answer: A
NEW QUESTION 70
Given LTM device ltm log:
Sep 26 20:51:08 local/lb-d-1 notice promptstatusd[3695]: 01460006:5: semaphore mcpd.running(1) held
Sep 26 20:51:08 local/lb-d-1 notice promptstatusd[3695]: 01460006:5:
Sep 26 20:51:08 local/lb-d-1 warning promptstatusd[3695]: 01460005:4: mcpd.running(1) held,
wait for mcpd
Sep 26 20:51:08 local/lb-d-1 info sod[3925]: 010c0009:6: Lost connection to mcpd - reestablishing.
Sep 26 20:51:08 local/lb-d-1 err bcm56xxd[3847]: 012c0004:3: Lost connection with MCP:
16908291 ... Exiting bsx_connect.cpp(174)
Sep 26 20:51:08 local/lb-d-1 info bcm56xxd[3847]: 012c0012:6: MCP Exit Status
Sep 26 20:51:08 local/lb-d-1 info bcm56xxd[3847]: 012c0012:6: Info: LACP stats (time
now:1348717868) : no traffic
Sep 26 20:51:08 local/lb-d-1 info bcm56xxd[3847]: 012c0014:6: Exiting...
Sep 26 20:51:08 local/lb-d-1 err lind[3842]: 013c0004:3: IO error on recv from mcpd - connection
lost
Sep 26 20:51:08 local/lb-d-1 notice bigd[3837]: 01060110:5: Lost connection to mcpd with error
16908291, will reinit connection.
Sep 26 20:51:08 local/lb-d-1 err statsd[3857]: 011b0004:3: Initial subscription for system
configuration failed with error ''
Sep 26 20:51:08 local/lb-d-1 err statsd[3857]: 011b0001:3: Connection to mcpd failed with error
'011b0004:3: Initial subscription for system configuration failed with error '''
Sep 26 20:51:08 local/lb-d-1 err csyncd[3851]: 013b0004:3: IO error on recv from mcpd -
connection lost
.............skipping more logs.....
Sep 26 20:51:30 local/lb-d-1 notice sod[3925]: 01140030:5: HA proc_running bcm56xxd is now
responding.
Sep 26 20:51:34 local/lb-d-1 notice sod[3925]: 01140030:5: HA proc_running mcpd is now
responding.
Sep 26 20:51:34 local/lb-d-1 notice sod[3925]: 010c0018:5: Standby
Which daemon failed?
- A. bcm56xxd
- B. promptstatusd
- C. sod
- D. mcpd
- E. lind
Answer: D
NEW QUESTION 71
-- Exhibit -
-- Exhibit --
Refer to the exhibit.
An LTM Specialist is upgrading the LTM devices.
Which device should be upgraded first?
- A. Device B
- B. Device D
- C. Device C
- D. Device A
Answer: C
NEW QUESTION 72
-- 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 has the tcpdump extract. The client loses connection with the LTM device.
Where is the reset originating?
- A. the device initiating the connection
- B. the application server
- C. the local switch
- D. the destination device of the initial connection
Answer: A
NEW QUESTION 73
An LTM Specialist configured a virtual server to load balance a custom application. The application works when it is tested from within the firewall but it fails when tested externally. The pool member address is 192.168.200.10:80. A capture from an external client shows:
GET /index.jsp HTTP/1.1 Host: 207.206.201.100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20100101 Firefox/15.0.1 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Connection: keep-alive HTTP/1.1 302 Found DatE. Wed, 17 Oct 2012 23:09:55 GMT Server: Apache/2.2.15 (CentOS) Location: http://192.168.200.10/user/home.jsp Content-LengtH. 304 Connection: close
What is the solution to this issue?
- A. Assign a SNAT pool to the virtual server.
- B. Configure redirect rewrite option in the HTTP profile.
- C. Add a Web Acceleration Profile to the virtual server.
- D. Configure a content filter on the backend web server.
Answer: B
NEW QUESTION 74
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. Reset on Timeout
- B. Generate Initial Sequence Number
- C. Loose Initiation
- D. Loose Close
Answer: C
Explanation:
Explanation/Reference:
NEW QUESTION 75
......
301b Dumps With 100% Verified Q&As - Pass Guarantee or Full Refund: https://www.passtorrent.com/301b-latest-torrent.html