2023 Latest F5 301b Real Exam Dumps PDF
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NEW QUESTION 68
An HTTP 1.1 application utilizes chunking.
Which header should be used to notify the client's browser that there are additional HTTP headers at the end of the message?
- A. From
- B. Expect
- C. ETag
- D. Trailer
Answer: D
NEW QUESTION 69
A web developer has created a custom HTTP call to a backend application. The HTTP headers being sent by the HTTP call are:
GET / HTTP/1.1
User-Agent: MyCustomApp (v1.0)
Accept: text/html
Cache-Control: no-cache
Connection: keep-alive
CookiE. somecookie=1
The backend server is responding with the following:
HTTP/1.1 400 Bad Request
DatE. Wed, 20 Jul 2012 17:22:41 GMT
Connection: close
Why is the HTTP web server responding with a HTTP 400 Bad Request?
- A. The User-Agent header contains an invalid character.
- B. The web server is configured to accept HTTP 1.0 requests only.
- C. The client request does NOT include a Host header.
- D. The web server is NOT expecting a keep-alive connection.
Answer: C
NEW QUESTION 70
-- Exhibit-
-- Exhibit --
Refer to the exhibit.
A user is unable to access an application.
What is the root cause of the problem?
- A. The user failed authentication.
- B. The User-Agent is incorrect.
- C. The GET request uses the wrong syntax.
- D. The 'Content-Length' is zero.
Answer: A
NEW QUESTION 71
An LTM Specialist has a single HTTPS virtual server doing SSL termination. No server SSL profile is defined.
The pool members are on the internal VLAN answering on HTTP port 80. Users with certain browsers are experiencing issues.
Which two locations are most appropriate to gather packets needed to determine the SSL issue? (Choose two.)
- A. LTM device's external VLAN
- B. user's computer
- C. LTM device's internal VLAN
- D. LTM device's management interface
- E. server interface
Answer: A,B
NEW QUESTION 72
-- 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 with a 404.
- B. The pool member is responding without HTTP headers.
- C. The request is NOT being received by the pool member.
- D. The HTTP headers are compressed.
Answer: B
NEW QUESTION 73
Which three HTTP headers allow an application server to determine the client's language compatibility, browser, operating system type, and compression compatibility? (Choose three.)
- A. Accept-Encoding
- B. Host
- C. Accept
- D. Accept-Language
- E. User-Agent
Answer: A,D,E
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 client SSL and server SSL profiles to the virtual server
- B. enable Collected Entities, Response Codes on the analytics profile
- C. assign a streaming profile to the virtual server
- D. enable Statistics Logging Type, External on the analytics profile
Answer: B
NEW QUESTION 75
An LTM Specialist is receiving reports from customers about multiple applications failing to work properly.
The LTM Specialist looks at the services running and notices that the bigd process has NOT started.
How are monitored LTM device objects marked when the bigd process is stopped?
- A. unchanged until bigd is restarted
- B. green or available
- C. blue or unchecked
- D. red or offline
Answer: A
NEW QUESTION 76
-- 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 with a 404.
- B. The pool member is responding without HTTP headers.
- C. The request is NOT being received by the pool member.
- D. The HTTP headers are compressed.
Answer: B
NEW QUESTION 77
-- Exhibit -
-- Exhibit --
Refer to the exhibits.
An LTM Specialist is troubleshooting an application configured on an LTM device on a one-armed configuration. The application is NOT working through the LTM device but does work when accessed directly via the application servers. The virtual server 192.168.1.211:443 is configured to SNAT using the address 192.168.1.144 and references a pool with the member 192.168.10.80:443. No Client or Server SSL profiles are associated. The LTM Specialist has collected two traffic captures to help determine the issue.
What is the problem with the configuration on the LTM device?
- A. Virtual server is configured without SSL Profiles.
- B. Virtual server is configured to use wrong port.
- C. Pool member is configured to use wrong port.
- D. Pool member is configured for SSL off-loading.
Answer: C
NEW QUESTION 78
-- 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. Enable loose initiation in the TCP profile.
- B. Increase the TCP timeout value in the TCP profile.
- C. Add an FTP profile to the virtual server.
- D. Add an FTP monitor to the pool.
Answer: C
NEW QUESTION 79
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 client traffic specifically for this virtual server?
- A. 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 - B. 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
- C. tcpdump -ni 0.0:nnn -s 0 'host 10.0.0.1' -w /var/tmp/trace.cap
- D. tcpdump -ni vlan301 -s 0 'port 80 and host 10.0.0.1' -w /var/tmp/trace.cap
- E. tcpdump -ni vlan301 -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 80
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 on the list, the client is sent to Pool WebClient1. Otherwise, discard and log the discard.
- C. The iRule compares a client IP to a list. If the client IP is NOT 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, discard and log the discard.
Answer: C
NEW QUESTION 81
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. Loose Initiation
- B. Generate Initial Sequence Number
- C. Reset on Timeout
- D. Loose Close
Answer: A
Explanation:
Explanation/Reference:
NEW QUESTION 82
An LTM Specialist is troubleshooting an issue where one LTM device in a three LTM device group is failing to synchronize after a synchronize to group command is issued. The LTM Specialist verifies there are no packet filters, port lock down, or network issues preventing the connection.
What are two reasons the synchronization group is having issues? (Choose two.)
- A. Certificates stored for the device trusts on all of the peer LTM devices are corrupted.
- B. Admin password changed on the LTM device NOT receiving the synchronized configurations.
- C. Admin passwords changed on one of the peer LTM devices that are able to synchronize.
- D. Certificates expired on all of the peer LTM devices.
- E. Certificates stored for the device trusts on the LTM device NOT receiving the configuration are corrupted.
Answer: B,E
NEW QUESTION 83
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. Create a cookie persistence profile with "match across services" enabled.
- B. Enable source address persistence as a fallback persistence method.
- C. Create a universal persistence profile on the cartID cookie.
- D. Use an iRule to rewrite the cartID cookie domain.
Answer: D
NEW QUESTION 84
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.key_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 85
-- 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 web server does NOT have a correct default gateway.
- C. The LTM device does NOT have an IP Forwarding virtual server on the External VLAN.
- D. The router does NOT have a route to the server subnet.
- E. The LTM device does NOT have a SNAT on the External VLAN.
Answer: B
NEW QUESTION 86
-- Exhibit -
-- Exhibit --
Refer to the exhibits.
A virtual server has been configured for SSL offload on a single-arm network. On average, the virtual server will be handling 100,000 connections, with a peak of 130,000 connections. Between the virtual server and the web servers there is a single reverse proxy to provide site caching. The proxy is configured to perform source IP persistence before contacting the web servers. The site is logging users out immediately after logging them in.
What should the LTM Specialist do to resolve this issue?
- A. Change the virtual server server-side TCP profile to tcp-lan-optimized.
- B. Create an iRule to add client IP persistence to a SNAT pool member.
- C. Add a source address persistence profile to the virtual server.
- D. Configure the virtual server HTTP profile to insert an X-Forwarded-For header.
Answer: B
NEW QUESTION 87
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.
What is the issue?
- A. The port 80 pool member is deleting the user's session cookie.
- B. The port 80 and port 443 connections are balanced to the same node.
- C. The port 80 and port 443 connections are balanced to different nodes.
- D. The port 443 pool member is deleting the user's session cookie.
Answer: C
NEW QUESTION 88
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 "Process Case-Insensitivity" option for the virtual server needs to be selected.
- B. The condition in the iRule is case sensitive.
- C. The 'switch' command in the iRule has been used incorrectly.
- D. The pool members of both pools need to be set up as case-insensitive members.
Answer: B
NEW QUESTION 89
-- Exhibit -
-- Exhibit --
Refer to the exhibit.
An LTM Specialist has a virtual server set up on the LTM device as per the exhibit. The LTM Specialist receives reports of intermittent issues. Some clients are connecting fine while others are failing to connect.
The LTM Specialist does a tcpdump on the relevant interfaces, with the following results extracted:
What is causing the intermittent issues?
- A. The default gateway is inaccessible from WS1.
- B. The load balancing (LB) method is inappropriate.
- C. The firewall is dropping the packets from WS1.
- D. The pool members have been set up as an active/standby pair, with WS1 as the standby.
Answer: A
NEW QUESTION 90
There are three servers in the pool: 172.16.20.1, 172.16.20.2, and 172.16.20.3, with the virtual IP address 10.0.20.88.
A user CANNOT connect to an HTTP application. To understand the problem and find a solution, the LTM Specialist runs two concurrent traces on the LTM device, with the following results:
Trace on client side:
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on 0.0, link-type EN10MB (Ethernet), capture size 96 bytes
22:22:07.423759 IP 172.16.20.100.53875 > 10.0.20.88.80: S 998346084:998346084(0)
win 5840 <mss 1460,sackOK,timestamp 67942058 0,nop,wscale 4>
22:22:07.424056 IP 10.0.20.88.80 > 172.16.20.100.53875: S 4671780:4671780(0) ack
998346085 win 4380 <mss 1460,nop,wscale 0,nop,nop,timestamp 2392362490 67942058,sackOK,eol> 22:22:07.424776 IP 172.16.20.100.53875 > 10.0.20.88.80: . ack 1 win 365
<nop,nop,timestamp 67942058 2392362490>
22:22:07.424790 IP 172.16.20.100.53875 > 10.0.20.88.80: P 1:149(148) ack 1 win 365 <nop,nop,timestamp 67942058 2392362490> 22:22:07.424891 IP 10.0.20.88.80 > 172.16.20.100.53875: . ack 149 win 4528
<nop,nop,timestamp 2392362491 67942058>
22:22:12.024850 IP 10.0.20.88.80 > 172.16.20.100.53875: R 1:1(0) ack 149 win 4528
6 packets captured
6 packets received by filter
0 packets dropped by kernel
Trace on server side:
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on internal, link-type EN10MB (Ethernet), capture size 96 bytes
22:22:07.424881 IP 172.16.20.100.53875 > 172.16.20.2.80: S 51116678:51116678(0) win
4380 <mss 1460,nop,wscale 0,nop,nop,timestamp 2392362491 0,sackOK,eol>
22:22:08.424893 IP 172.16.20.100.53875 > 172.16.20.2.80: S 51116678:51116678(0) win 4380 <mss 1460,nop,wscale 0,nop,nop,timestamp 2392363491 0,sackOK,eol>
22:22:09.625082 IP 172.16.20.100.53875 > 172.16.20.2.80: S 51116678:51116678(0) win 4380 <mss 1460,nop,wscale 0,nop,nop,timestamp 2392364691 0,sackOK,eol>
22:22:10.825194 IP 172.16.20.100.53875 > 172.16.20.2.80: S 51116678:51116678(0) win 4380 <mss 1460,sackOK,eol>
4 packets captured 4 packets received by filter 0 packets dropped by kernel
What should the LTM Specialist do to solve the problem?
- A. Edit the packet filter rules.
- B. Enable the virtual server.
- C. Configure the virtual server to use SNAT.
- D. Modify the monitor of the pool.
Answer: C
NEW QUESTION 91
An LTM device is load balancing SIP traffic. An LTM Specialist notices that sometimes the SIP request is being load balanced to the same server as the initial connection.
Which setting in the UDP profile will make the LTM device more evenly distribute the SIP traffic?
- A. Disable Datagram LB
- B. Enable Datagram LB
- C. Set Timeout to Immediate
- D. Set Timeout to Indefinite
Answer: B
Explanation:
Explanation/Reference:
NEW QUESTION 92
......
Trustworthy Training Options
The extensive structure of the F5 301B exam demands more than commitment. It is needed that the aspirants have a hold over the best study material and acknowledged guidance to taste success in the test. Here are some worthy options:
- Free training courses by the vendor
F5 301B pursuers who don’t want to spend much and want quality assistance can aim at the free Getting Started with BIG-IP Local Traffic Manager (LTM) course. It includes web-based sessions divided into four modules and well-organized. By completing this training, candidates will understand all the key concepts of BIG-IP LTM systems and will be able to choose the proper method of using an iRule for customizing the traffic flow, utilize OneConnect, implement high availability, and many more.
- Live training
For acquiring expert-level cognizance in the most important F5 301B exam concepts, the vendor offers instructor-led training, Configuring BIG-IP LTM: Local Traffic Manager. Enrolling in it is an ideal way to learn in a classroom environment and have an ideal blend of lectures, extensive hands-on labs, and discussions. By following this course, one will build all the necessary skills and will have a better hold over the subject matter as well as more chances to secure passing grades easily.
Before you go for this training, it is suggested that you have completed the Administering BIG-IP instructor-led course, F5 Certified BIG-IP Administrator, along with optional Getting Started with BIG-IP and Getting Started with BIG-IP Local Traffic Manager (LTM) web-based courses.
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