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F5 301b LTM Specialist: Maintain & Troubleshoot Exam Practice Test

Demo: 31 questions
Total 209 questions

LTM Specialist: Maintain & Troubleshoot Questions and Answers

Question 1

-- 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?

Options:

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

Question 2

-- Exhibit –

-- Exhibit --

Refer to the exhibit.

Which pool can be removed without affecting client traffic?

Options:

A.

ftp_pool

B.

http_pool

C.

server1_80

D.

server_pool

Question 3

-- Exhibit –

-- Exhibit --

Refer to the exhibit.

Which URL should be reported to the server/application team as getting user-visible errors?

Options:

A.

/env.cgi

B.

/page14.cgi

C.

/reflector.php

D.

/browserspecific.html

Question 4

-- Exhibit –

-- Exhibit --

Refer to the exhibit.

An LTM Specialist is investigating reports that users are unable to perform some commands through an FTP virtual server. The users are receiving the FTP error "500 Illegal PORT command." The virtual server is configured to SNAT using automap. The LTM Specialist performs a capture on the server side of the LTM device.

Why is the server returning this error?

Options:

A.

LIST command disallowed

B.

PORT command disallowed

C.

Active IP address in PORT command

D.

Active IP address in LOGIN command

Question 5

Which two alerting capabilities can be enabled from within an application visibility reporting (AVR) analytics profile? (Choose two.)

Options:

A.

sFlow

B.

SNMP

C.

e-mail

D.

LCD panel alert

E.

high speed logging (HSL)

Question 6

-- Exhibit –

-- Exhibit --

Refer to the exhibits.

How should the LTM Specialist minimize the configuration?

Options:

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.

Question 7

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?

Options:

A.

server

B.

external VLAN

C.

internal VLAN

D.

client machine

Question 8

An F5 LTM Specialist needs to perform an LTM device configuration backup prior to RMA swap.

Which command should be executed on the command line interface to create a backup?

Options:

A.

bigpipe config save /var/tmp/backup.ucs

B.

tmsh save /sys ucs /var/tmp/backup.ucs

C.

tmsh save /sys config /var/tmp/backup.ucs

D.

tmsh save /sys config ucs /var/tmp/backup.ucs

Question 9

Which command line interface command will check if the BIG-IP platform contains a packet velocity ASIC (PVA)?

Options:

A.

bigpipe platform show | grep -i pva

B.

tmsh show /sys hardware pva status

C.

tmsh show /sys hardware | grep -i pva

D.

tmsh show /ltm hardware | grep -i pva

Question 10

-- Exhibit –

-- Exhibit --

Refer to the exhibit.

Which two items can be consolidated to simplify the LTM configuration? (Choose two.)

Options:

A.

/Common/vs1-https-redirect

B.

/Common/vs2-https-redirect

C.

/Common/vs3-https-redirect

D.

/Common/vs4-https-redirect

E.

/Common/vs5-https-redirect

Question 11

-- Exhibit –

-- Exhibit --

Refer to the exhibit.

A virtual server is set up on an LTM device as follows:

Virtual server address 78.24.213.79

Default Persistence ProfilE. source_addr, 600s.

Pool NamE. Pool1

Pool Members: 10.72.250.52:80 and 10.72.250.60:80 (both on Internal Vlan)

There are several current connections to the virtual server, and pool member 10.72.250.52:80 has been set to a "Disabled" state.

A tcpdump on the Internal Vlan shows traffic going to 10.72.250.52:80.

How soon after the persistence table query was run can existing connections be refreshed/renewed to ensure that no requests are sent to 10.72.250.52?

Options:

A.

196 seconds

B.

460 seconds

C.

539 seconds

D.

590 seconds

E.

591 seconds

Question 12

A web application requires the client to provide the destination server and service identification.

Which HTTP header will supply this information?

Options:

A.

Host

B.

From

C.

Expect

D.

Connection

Question 13

A client is attempting to log in to a web application that requires authentication. The following HTTP headers are sent by the client:

GET /owa/ HTTP/1.1

Authorization: Basic dXNlcm5hbWU6cGFzc3dvcmQ=

User-Agent: curl/7.26.0

Host: 10.0.0.14

Accept: */*

Accept-EncodinG. gzip,deflate

The web server is responding with the following HTTP headers:

HTTP/1.1 401 Unauthorized

Content-TypE. text/html

Server: Microsoft-IIS/7.5

WWW-AuthenticatE. NTLM

DatE. Wed, 16 Aug 1977 19:12:31 GMT

Content-LengtH. 1293

The client has checked the login credentials and believes the correct details are being entered.

What is the reason the destination web server is sending an HTTP 401 response?

Options:

A.

The username and password are incorrect.

B.

The server has an incorrect date configured.

C.

The client is using the wrong type of browser.

D.

The wrong authentication mechanism is being used.

Question 14

-- Exhibit –

-- Exhibit --

Refer to the exhibit.

An administrator created a monitor to a pool member web server, which resulted in a pool member that is marked red. The administrator knows the web server is working when it is accessed from another computer.

What should the administrator do to correct the problem?

Options:

A.

Change the default gateway on the server.

B.

Create a SNAT in the LTM device configuration.

C.

Change the route to the client in the LTM configuration.

D.

Change the username and/or password on the monitor.

Question 15

-- Exhibit –

-- Exhibit --

Refer to the exhibit.

An LTM Specialist is reviewing the virtual server configuration on an LTM device.

Which two actions should the LTM Specialist perform to minimize the virtual server configuration? (Choose two.)

Options:

A.

Remove 'snat automap' from the virtual server.

B.

Remove the 'http' profile from the virtual server.

C.

Remove the 'default_class' from the virtual server.

D.

Combine 'acct_class' and 'marketing_class' into one class and update associations on the virtual server.

E.

Combine 'marketing_class' and 'default_class' into one class and update associations on the virtual server.

Question 16

A customer needs to intercept all of the redirects its application is sending to clients. When a redirect is matched, the customer needs to log a message including the client IP address.

Which iRule should be used?

Options:

A.

when HTTP_RESPONSE {

if { [HTTP::is_3xx] } {

log local0. "redirecting client ip address [IP::addr [IP::remote_addr]]"

}

}

B.

when HTTP_REQUEST {

if { [HTTP::is_301] } {

log local0. "redirecting client ip address [IP::addr [IP::remote_addr]]"

}

}

C.

when HTTP_REQUEST {

if { [HTTP::is_redirect] } {

log local0. "redirecting client ip address [IP::addr [IP::remote_addr]]"

}

}

D.

when HTTP_RESPONSE {

if { [HTTP::is_redirect] } {

log local0. "redirecting client ip address [IP::addr [IP::remote_addr]]"

}

}

Question 17

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?

Options:

A.

Via

B.

Server

C.

Trailer

D.

Referer

Question 18

-- Exhibit –

-- Exhibit --

Refer to the exhibit.

An LTM Specialist is troubleshooting a new HTTP monitor on a pool. The pool member is functioning correctly when accessed directly through a browser. However, the monitor is marking the member as down. The LTM Specialist captures the monitor traffic via tcpdump.

What is the issue?

Options:

A.

The server is marking the connection as closed.

B.

The pool member is rejecting the monitor request.

C.

The monitor request is NOT returning the page body.

D.

The 'time-until-up' setting on the monitor is incorrect.

Question 19

-- 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

00:25:07.598537 IP 195.56.67.90.https > 168.210.232.5.33159: S 2690691360:2690691360(0) ack 1920647965 win 4350

00:25:07.598851 IP 168.210.232.5.33160 > 195.56.67.90.https: S 2763858764:2763858764(0) win 8192

00:25:07.598858 IP 195.56.67.90.https > 168.210.232.5.33160: S 1905576176:1905576176(0) ack 2763858765 win 4350

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

What is the problem?

Options:

A.

The filters on the tcpdumps are incorrect.

B.

The DNS entry for website.com is incorrect.

C.

The virtual server 'WEBSERVICES1' is listening on the incorrect port.

D.

The firewall is dropping the connection coming from the pool members returned to the client.

E.

The subnet masks of the pool members of pool WebServices1 and the f5 'Internal' Vlan are incorrect.

Question 20

An LTM Specialist is troubleshooting an issue with a new virtual server. When connecting through the virtual server, clients receive the message "The connection was reset" in the browser, although connections directly to the pool member show the application is functioning correctly.

ltm pool srv1_https_pool {

members {

192.168.2.1:https{

address 192.168.2.1

}

}

}

ltm virtual https_example_vs {

destination 192.168.1.155:https

ip-protocol tcp

mask 255.255.255.255

pool srv1_https_pool

profiles {

http { }

tcp { }

}

snat automap

vlans-disabled

}

How should the LTM Specialist resolve this issue?

Options:

A.

Enable HTTP monitoring on the pool.

B.

Add a ClientSSL profile to the virtual server.

C.

Disable SNAT Automap on the virtual server.

D.

Remove the HTTP profile from the virtual server.

Question 21

-- 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?

Options:

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 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.

C.

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.

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.

Question 22

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.)

Options:

A.

Certificates expired on all of the peer LTM devices.

B.

Certificates stored for the device trusts on all of the peer LTM devices are corrupted.

C.

Admin passwords changed on one of the peer LTM devices that are able to synchronize.

D.

Admin password changed on the LTM device NOT receiving the synchronized configurations.

E.

Certificates stored for the device trusts on the LTM device NOT receiving the configuration are corrupted.

Question 23

-- Exhibit –

-- Exhibit --

Refer to the exhibit.

An LTM Specialist is upgrading the LTM devices.

Which device should be upgraded first?

Options:

A.

Device A

B.

Device B

C.

Device C

D.

Device D

Question 24

An LTM Specialist uploaded new releases .iso and .md5 files titled "BIGIP-FILENAME" via the GUI.

Which commands are run via the command line from the root directory to verify the integrity of the new .iso file?

Options:

A.

cd /var/shared/images

md5sum --check BIGIP-FILENAME.iso

B.

cd /shared/images

md5sum --check BIGIP-FILENAME.iso

C.

cd /var/shared/images

md5sum --check BIGIP-FILENAME.iso.md5

D.

cd /shared/images

md5sum --check BIGIP-FILENAME.iso.md5

Question 25

-- Exhibit –

-- Exhibit --

Refer to the exhibit.

An LTM Specialist is troubleshooting a new HTTP monitor on a pool. The pool member is functioning correctly when accessed directly through a browser, although the monitor is marking the member as down. As part of the troubleshooting, the LTM Specialist has captured the monitor traffic via tcpdump.

How should the LTM Specialist resolve this issue?

Options:

A.

Add the 'http' monitor to the pool.

B.

Add the 'icmp' monitor to the node.

C.

Modify the receive string to valid content.

D.

Correct the firewall rules on the pool member.

Question 26

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?

Options:

A.

Range

B.

Expect

C.

Accept-Ranges

D.

Content-Length

Question 27

-- Exhibit –

-- Exhibit --

Refer to the exhibit.

A client attempts to connect from a Google Chrome browser to a virtual server on a BIG-IP LTM. The virtual server is SSL Offloaded. When the client connects, the client receives an SSL error. After trying Mozilla Firefox and Internet Explorer browsers, the client still receives the same errors.

The LTM Specialist does an ssldump on the virtual server and receives the results as per the exhibit.

What is the problem?

Options:

A.

The SSL key length is incorrect.

B.

The BIG-IP LTM is NOT serving a certificate.

C.

The BIG-IP LTM is NOT listening on port 443.

D.

The client needs to be upgraded to the appropriate cipher-suite.

Question 28

-- Exhibit –

-- Exhibit --

Refer to the exhibit.

A user is unable to access a secure application via a virtual server.

What is the cause of the issue?

Options:

A.

The client authentication failed.

B.

The virtual server does NOT have a pool configured.

C.

The client and server CANNOT agree on a common cipher.

D.

The virtual server does NOT have a client SSL profile configured.

Question 29

The output of a tmsh command is: ------------------------------------------------------------ Net::Interface Name Status Bits Bits Errs Errs Drops Drops Colli In Out In Out In Out sions ------------------------------------------------------------ 1.1 down 0 0 0 0 0 0 0 1.2 up 191.4K 0 0 0 374 0 0 1.3 down 0 0 0 0 0 0 0 1.4 up 22.5K 0 0 0 44 0 0 2.1 miss 0 0 0 0 0 0 0 2.2 miss 0 0 0 0 0 0 0 mgmt up 43.2G 160.0G 0 0 0 0 0

Which command was executed on the LTM device to show the output?

Options:

A.

tmsh show /net interface

B.

tmsh /net show interface status

C.

tmsh /net show interface

D.

tmsh show /net interface status

Question 30

-- 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 the appropriate 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?

Options:

A.

The SSL certificate and key have expired.

B.

The SSL certificate and key do NOT match.

C.

The client CANNOT verify the certification path.

D.

The common name on the SSL certificate does NOT match the hostname of the site.

Question 31

-- 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?

Options:

A.

The GET request Host header field requires a host name.

B.

Incorrect syntax in send string. 'HTTP/1.1' should be 'HTTP1.1'.

C.

The /test_page.html does NOT exist on the web server and should be added.

D.

Incorrect syntax in send string. 'Connection: Close' should be 'Connection: Open'.

Demo: 31 questions
Total 209 questions