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

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Viewing questions 31-40 out of questions
Questions # 31:

An LTM device is monitoring pool members on port 80. The LTM device is using an HTTP monitor with a send string of GET / and a blank receive string.

What would cause the pool members to be marked down?

Options:

A.

A pool member responds with an HTTP 200 series response code.


B.

A pool member responds with an HTTP 300 series response code.


C.

A pool member responds with an HTTP 400 series response code.


D.

A pool member responds with an HTTP 500 series response code.


E.

A pool member does NOT acknowledge the connection SYN on port 80.


Expert Solution
Questions # 32:

-- Exhibit –

Question # 32

Question # 32

-- Exhibit --

Refer to the exhibits.

An LTM Specialist has configured a virtual server to distribute connections to a pool of application servers and to offload SSL processing. The application fails to work as expected when connecting to the virtual server. It does work when clients connect directly to the application. Two packet captures were taken at the application server.

What is the root cause of the problem?

Options:

A.

The application servers are NOT listening on port 80.


B.

The LTM device is sending non-SSL traffic to an SSL port.


C.

The virtual server does NOT have a clientSSL profile assigned.


D.

The SSL handshake between the LTM device and the server is failing.


Expert Solution
Questions # 33:

Which iRule will reject any connection originating from a 10.0.0.0/8 network?

Options:

A.

when CLIENT_ACCEPTED {

set remote_ip [IP::addr [IP::remote_addr] mask 8]

switch $remote_ip {

"10.0.0.0" { reject }

"11.0.0.0" { pool pool_http1}

default { pool http_pool }

}

}


B.

when CLIENT_ACCEPTED {

set remote_ip [IP::addr [IP::local_addr] mask 8]

switch $remote_ip {

"10.0.0.0" { reject }

"11.0.0.0" { pool pool_http1}

default { pool http_pool }

}

}


C.

when CLIENT_ACCEPTED {

set remote_ip [IP::addr [IP::client_addr] mask 255.0.0.0]

switch $remote_ip {

"10.0.0.0" { reject }

"11.0.0.0" { pool pool_http1}

default { pool http_pool }

}

}


D.

when CLIENT_ACCEPTED {

set remote_ip [IP::addr [IP::local_addr] mask 255.0.0.0]

switch $remote_ip {

"10.0.0.0" { reject }

"11.0.0.0" { pool pool_http1}

default { pool http_pool }

}

}


Expert Solution
Questions # 34:

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


Expert Solution
Questions # 35:

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


Expert Solution
Questions # 36:

-- Exhibit –

Question # 36

-- Exhibit --

Refer to the exhibit.

Users report that a web application works incorrectly. Sometimes contextual data displayed on the web pages is accurate; other times it is inaccurate.

The LTM administrator looks at the connection table with a filter on one of the client IP addresses currently connected using the command "tmsh show sys connection cs-client-addr 10.0.20.1"

with the following results:

10.0.20.1:60048 10.0.20.88:80 10.0.20.1:60048 172.16.20.1:80 tcp 3 (tmm: 0)

10.0.20.1:60050 10.0.20.88:80 10.0.20.1:60050 172.16.20.3:80 tcp 3 (tmm: 0)

10.0.20.1:60047 10.0.20.88:80 10.0.20.1:60047 172.16.20.2:80 tcp 3 (tmm: 0)

10.0.20.1:60049 10.0.20.88:80 10.0.20.1:60049 172.16.20.1:80 tcp 3 (tmm: 0)

What is the solution to the problem?

Options:

A.

Synchronize the clock of the LTM device with NTP.


B.

Modify the load balancing method attached to the pool.


C.

Set up an HTTP cookie insert profile in the virtual server.


D.

Modify the setup of the monitor bound to the pool used by the application.


Expert Solution
Questions # 37:

An LTM Specialist has a OneConnect profile and HTTP profile configured on a virtual server to load balance an HTTP application.

The following HTTP headers are seen in a network trace when a client connects to the virtual server:

Clientside:

GET / HTTP/1.1

Host: 192.168.136.100

User-Agent: Mozilla/5.0

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8

Accept-EncodinG. gzip, deflate

Connection: keep-alive

Serverside:

HTTP/1.1 200 OK

DatE. 5 Jun 1989 17:06:55 GMT

Server: Apache/2.2.14 (Ubuntu)

Vary: Accept-Encoding

Content-EncodinG. gzip

Content-LengtH. 3729

X-Cnection: close

Content-TypE. text/html

The LTM Specialist notices the OneConnect feature is working incorrectly.

Why is OneConnect functioning incorrectly?

Options:

A.

Client must support HTTP/1.0.


B.

Client must support HTTP keep-alive.


C.

Server must support HTTP/0.9.


D.

Server must support HTTP keep-alive.


Expert Solution
Questions # 38:

An LTM Specialist notices the following error on the stdout console:

mcpd[2395]: 01070608:0: License is not operational(expired or digital signature does not match contents)

Which command should be executed to verify the LTM device license?

Options:

A.

bigpipe version


B.

tmsh show /sys license


C.

tmsh /util bigpipe version


D.

tmsh show /sys license status


Expert Solution
Questions # 39:

-- Exhibit –

Question # 39

-- 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.


Expert Solution
Questions # 40:

A device on the network is configured with the same IP address as the management address of the active LTM device, causing the management GUI to be inaccessible.

Which two methods should the LTM Specialist use to access the LTM device in order to change the management IP address? (Choose two.)

Options:

A.

Connect via ssh to the AOM IP address.


B.

Connect via ssh to the management address.


C.

Connect to the LTM device via serial connection.


D.

Connect a monitor and keyboard to the LTM device.


E.

Connect via ssh to the standby unit and connect via ssh across the serial link between the devices.


Expert Solution
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Viewing questions 31-40 out of questions