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F5 301b Practice Test - Questions Answers, Page 10

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Question 91

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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?

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Question 92

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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?

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Question 93

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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?

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Question 94

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A web application sends information about message integrity and content life time to the client.

Which two HTTP headers should be used in sending the client information? (Choose two.)

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Question 95

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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?

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Question 96

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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?

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Question 97

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The LTM device is configured to provide load balancing to a set of web servers that implement access control lists (ACL) based on the source IP address of the client. The ACL is at the network level and the web server is configured to send a TCP reset back to the client if it is NOT permitted to connect.

The virtual server is configured with the default OneConnect profile.

The ACL is defined on the web server as:

Permit: 192.168.136.0/24

Deny: 192.168.116.0/24

The packet capture is taken of two individual client flows to a virtual server with IP address 192.168.136.100.

Client A - Src IP 192.168.136.1 - Virtual Server 192.168.136.100:

Clientside:

09:35:11.073623 IP 192.168.136.1.55684 > 192.168.136.100.80: S 869998901:869998901(0) win 8192 <mss 1460,nop,wscale 2,nop,nop,sackOK>

09:35:11.073931 IP 192.168.136.100.80 > 192.168.136.1.55684: S 2273668949:2273668949(0) ack 869998902 win 4380 <mss 1460,nop,wscale 0,sackOK,eol>

09:35:11.074928 IP 192.168.136.1.55684 > 192.168.136.100.80: . ack 1 win 16425

09:35:11.080936 IP 192.168.136.1.55684 > 192.168.136.100.80: P 1:299(298) ack 1 win 16425

09:35:11.081029 IP 192.168.136.100.80 > 192.168.136.1.55684: . ack 299 win 4678

Serverside:

09:35:11.081022 IP 192.168.136.1.55684 > 192.168.116.128.80: S 685865802:685865802(0) win 4380 <mss 1460,nop,wscale 0,sackOK,eol>

09:35:11.081928 IP 192.168.116.128.80 > 192.168.136.1.55684: S 4193259095:4193259095(0) ack 685865803 win 5840 <mss 1460,nop,nop,sackOK,nop,wscale 6>

09:35:11.081943 IP 192.168.136.1.55684 > 192.168.116.128.80: . ack 1 win 4380

09:35:11.081955 IP 192.168.136.1.55684 > 192.168.116.128.80: P 1:299(298) ack 1 win 4380

09:35:11.083765 IP 192.168.116.128.80 > 192.168.136.1.55684: . ack 299 win 108

Client B - Src IP 192.168.116.1 - Virtual Server 192.168.136.100:

Clientside:

09:36:11.244040 IP 192.168.116.1.55769 > 192.168.136.100.80: S 3320618938:3320618938(0) win 8192 <mss 1460,nop,wscale 2,nop,nop,sackOK>

09:36:11.244152 IP 192.168.136.100.80 > 192.168.116.1.55769: S 3878120666:3878120666(0) ack 3320618939 win 4380 <mss 1460,nop,wscale 0,sackOK,eol>

09:36:11.244839 IP 192.168.116.1.55769 > 192.168.136.100.80: . ack 1 win 16425

09:36:11.245830 IP 192.168.116.1.55769 > 192.168.136.100.80: P 1:299(298) ack 1 win 16425

09:36:11.245922 IP 192.168.136.100.80 > 192.168.116.1.55769: . ack 299 win 4678

Serverside:

09:36:11.245940 IP 192.168.136.1.55684 > 192.168.116.128.80: P 599:897(298) ack 4525 win 8904

09:36:11.247847 IP 192.168.116.128.80 > 192.168.136.1.55684: P 4525:5001(476) ack 897 win 142

Why was the second client flow permitted by the web server?

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Question 98

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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

Which issue is the pool member having?

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Question 99

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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 'Unable to connect' in the browser, although connections directly to the pool member show the application is functioning correctly. The LTM device configuration is:

ltm virtual /Common/vs_https {

destination /Common/10.10.1.110:443

ip-protocol udp

mask 255.255.255.255

pool /Common/pool_https

profiles {

/Common/udp { }

}

translate-address enabled

translate-port enabled

vlans-disabled

}

ltm pool /Common/pool_https {

members {

/Common/172.16.20.1:443 {

address 172.16.20.1

}

}

}

What issue is the LTM Specialist experiencing?

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Question 100

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

GET / HTTP/1.1

Host: www.example.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

HTTP/1.1 200 OK

Server: Apache/2.2.15 (Unix)

Last-ModifieD. Wed, 12 Aug 2009 00:00:30 GMT

Accept-Ranges: bytes

Content-LengtH. 1063

X-Cnection: close

Content-TypE. text/html; charset=UTF-8

Vary: Accept-Encoding

Content-EncodinG. gzip

Connection: Keep-Alive

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 header field is contributing to 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.)