Pass the F5 LTM Specialist 301b Questions and answers with CertsForce

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Questions # 1:

-- Exhibit –

Question # 1

-- Exhibit --

Refer to the exhibit.

A user is unable to access an application.

What is the root cause of the problem?

Options:

A.

The User-Agent is incorrect.


B.

The 'Content-Length' is zero.


C.

The user failed authentication.


D.

The GET request uses the wrong syntax.


Expert Solution
Questions # 2:

-- Exhibit –

Question # 2

-- 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


Expert Solution
Questions # 3:

What is the correct command to reset an LTM device to its default settings?

Options:

A.

tmsh reset-all default


B.

tmsh set /sys config defaults


C.

tmsh load /sys config default


D.

tmsh /util bigpipe reset-factory-defaults


Expert Solution
Questions # 4:

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?

Options:

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 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


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


E.

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


Expert Solution
Questions # 5:

An LTM Specialist configures the following iRule on an LTM device:

when HTTP_REQUEST {

if {[string tolower [HTTP::uri]] contains "/URI1/" } {

pool Pool1

}

elseif {[string tolower [HTTP::uri]] contains "/URI2/" } {

pool Pool2

}

elseif {[string tolower [HTTP::uri]] contains "/URI3/" } {

pool Pool3

}

else { pool Pool4}

}

Given the following request: http://www.example.comURI1/index.html?fu=bar &pass=1234

Which pool will be selected by the iRule?

Options:

A.

Pool1


B.

Pool2


C.

Pool3


D.

Pool4


Expert Solution
Questions # 6:

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?

Options:

A.

The request does NOT include a User-Agent header.


B.

The HTTP monitor does NOT support monitoring jsp pages.


C.

The request does NOT include any cookies and the application is expecting a session cookie.


D.

The request includes an Accept-Encoding so the server is responding with a gzipped result and LTM monitors CANNOT handle gzipped responses.


Expert Solution
Questions # 7:

An LTM Specialist is troubleshooting an HTTP monitor. The pool member is accessible directly through a browser, but the HTTP monitor is marking the pool member as down.

GET / HTTP/1.1

HTTP/1.1 400 Bad Request

DatE. Tue, 23 Oct 2012 21:39:07 GTM

Server: Apache/2.2.22 (FreeBSD) PHP/5.4.4

mod_ssl/2.2.22 OpenSSL/0.9.8q DAV/2

Content-LengtH. 226

Connection: close

Content-TypE. text/html; charset=iso-8859-1

Which issue is the pool member having?

Options:

A.

The pool member has too many concurrent connections.


B.

The pool member is rejecting the request because it is invalid.


C.

The pool member lacks the object requested by the monitor.


D.

The pool member is NOT accepting requests from the LTM device IP address.


Expert Solution
Questions # 8:

A failover event is recorded in the following log messages:

Jan 01 00:56:56 BIG-IP notice mcpd[5318]: 01070727:5: Pool /Common/my-pool member /Common/10.0.0.10:80 monitor status down.

Jan 01 00:56:56 BIG-IP notice sod[5855]: 010c0045:5: Leaving active, group score 10 peer group score 20.

Jan 01 00:56:56 BIG-IP notice sod[5855]: 010c0052:5: Standby for traffic group /Common/traffic-group-1.

Jan 01 00:56:56 BIG-IP notice sod[5855]: 010c0018:5: Standby

Jan 01 00:57:06 BIG-IP notice logger: /usr/bin/tmipsecd --tmmcount 4 ==> /usr/bin/bigstart stop racoon

What is the cause of the failover?

Options:

A.

The HA group score changed.


B.

No traffic is seen on traffic-group-1.


C.

The peer device left the traffic group.


D.

The racoon service stopped responding.


Expert Solution
Questions # 9:

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.

How should the LTM Specialist resolve this issue?

Options:

A.

Add an HTTP profile to both virtual servers.


B.

Enable SNAT Automap on both virtual servers.


C.

Create a custom persistence profile and enable "Map Proxies."


D.

Create a custom persistence profile and enable "Match Across Services."


Expert Solution
Questions # 10:

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?

Options:

A.

The port 80 pool member is deleting the user's session cookie.


B.

The port 443 pool member is deleting the user's session cookie.


C.

The port 80 and port 443 connections are balanced to the same node.


D.

The port 80 and port 443 connections are balanced to different nodes.


Expert Solution
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