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F5 301b Practice Test - Questions Answers, Page 11

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Question 101

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An LTM Specialist needs to rewrite text within an HTML response from a web server. A client is sending the HTTP request below:

GET / HTTP/1.1

Host: www.f5.com

User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:16.0) Gecko/20100101 Firefox/16.0

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

Accept-LanguagE. en-US,en;q=0.5

Accept-EncodinG. gzip, deflate

Cache-Control: no-cache

Connection: keep-alive

CookiE. somecookie=1

Although a stream profile has been added to the virtual server, the content within the HTTP response is NOT being matched, and therefore NOT modified.

Which HTTP header should the LTM Specialist remove from the request to ensure the content can be matched and modified?

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Question 102

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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?

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Question 103

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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?

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Question 104

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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

How should the LTM Specialist resolve this issue?

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Question 105

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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?

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Question 106

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An LTM device supports two power supplies. The value of the BigDB key 'platform.powersupplymonitor' is equal to enable.

Where would the error message be visible if one of the power supplies fails or is NOT plugged in?

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Question 107

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An LTM Specialist loads a UCS file generated on a different LTM device and receives the following error message:

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

Which command should the LTM Specialist use to prevent the error?

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Question 108

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These log entries can have different root causes:

Jun 28 05:01:21 LTM_A notice mcpd[27545]: 0107143a:5: CMI reconnect timer: enabled

Jun 28 05:01:21 LTM_A notice mcpd[27545]: 01071431:5: Attempting to connect to CMI peer 1.1.1.2 port 6699

Jun 28 05:01:21 LTM_A notice mcpd[27545]: 01071432:5: CMI peer connection established to 1.1.1.2 port 6699

Jun 28 05:01:26 LTM_A notice mcpd[27545]: 0107143a:5: CMI reconnect timer: disabled, all peers are connected

Which two commands should be used to obtain additional information on these entries? (Choose two.)

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Question 109

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An LTM Specialist wants to allow access to the Always On Management (AOM) from the network.

Which two methods should the LTM Specialist use to configure the AOM interface? (Choose two.)

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Question 110

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An LTM Specialist troubleshooting an issue looks at the following /var/log/ltm entries:

Oct 2 04:52:42 slot1/tmm7 crit tmm7[21734]: 01010201:2: Inet port exhaustion on 10.143.109.5 to 10.143.147.150:53 (proto 17)

Oct 2 05:37:16 slot1/tmm7 crit tmm7[21734]: 01010201:2: Inet port exhaustion on 10.143.109.5 to 10.143.147.150:53 (proto 17)

Oct 2 05:57:32 slot1/tmm2 crit tmm2[21729]: 01010201:2: Inet port exhaustion on 10.143.109.5 to 10.143.147.150:53 (proto 17)

Oct 2 06:30:03 slot1/tmm7 crit tmm7[21734]: 01010201:2: Inet port exhaustion on 10.143.109.5 to 10.143.147.150:53 (proto 17)

Oct 2 06:37:44 slot1/tmm2 crit tmm2[21729]: 01010201:2: Inet port exhaustion on 10.143.109.5 to 10.143.147.150:53 (proto 17)

Oct 2 06:47:05 slot1/tmm5 crit tmm5[21732]: 01010201:2: Inet port exhaustion on 10.143.109.5 to 10.143.147.150:53 (proto 17)

Which configuration item should the LTM Specialist review to fix the issue?

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An LTM Specialist configures an HTTP monitor as follows: ltm monitor http stats_http_monitor { defaults-from http destination *:* interval 5 recv 'Health check: OK' send 'GET /stats/stats.html 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 } The monitor is marking all nodes as down. A trace of the HTTP conversation shows the following: GET /stats/stats.html HTTP/1.1 Host: www.example.com Accept-EncodinG. gzip, deflate Connection: close HTTP/1.1 401 Authorization Required DatE. Tue, 23 Oct 2012 19:38:56 GMT Server: Apache/2.2.15 (Unix) WWW-AuthenticatE. Basic realm='Please enter your credentials' Content-LengtH. 480 Connection: close Content-TypE. text/html; charset=iso-8859-1 Which action will resolve the problem?
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&amp;pass=1234 Which pool will be selected by the iRule?
An LTM device is serving an FTP virtual server that has three pool members. The FTP pool members are monitored via TCP port 21. Customers are reporting that they are able to log in, but are sometimes unable to upload files to the server. Which monitor should the LTM Specialist configure to verify that the servers can handle file uploads?
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?
-- 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. How should the send string be modified to correct this issue?
-- 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?
-- 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. The client receives the same errors when trying Mozilla Firefox and Internet Explorer browsers. The LTM Specialist does an ssldump on the virtual server and receives the results as per the exhibit. How should this be resolved?
-- Exhibit -- -- Exhibit -- Refer to the exhibit. An LTM device is used to load balance web content over a secure channel. The developers of the web content have done a trace using an HTTP profiler application. They believe that allowing the LTM device to compress traffic to the client will improve performance. The client can utilize GZIP or deflate compression algorithms. An LTM Specialist must implement the compression. The LTM Specialist has completed the following actions: 1. Create the relevant profile. 2. Apply the relevant profile to the virtual server (VS). After applying the relevant profile, the LTM device is failing to compress the traffic. Instead, the traffic is being served with an error. What is the problem?
-- Exhibit -- -- Exhibit -- Refer to the exhibit. Which step should an LTM Specialist take next to finish upgrading to HD1.3?
An LTM Specialist configures a new HTTP virtual server on an LTM device external VLAN. The web servers are connected to the LTM device internal VLAN. Clients trying to connect to the virtual server are unable to establish a connection. A packet capture shows an HTTP response from a web server to the client and then a reset from the client to the web server. From which two locations could the packet capture have been collected? (Choose two.)