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NEW QUESTION 43
A device group is made up of four members: LTM-A, LTM-B, LTM-C, and LTM-D. An LTM Specialist makes a configuration change on LTM-B. Later, a different LTM Specialist notices a "changes pending" message on all devices. When logged into LTM-D, the LTM Specialist attempts to config-sync to the device group. The sync operation fails.
Why is the LTM Specialist on LTM-D unable to synchronize the configuration to the group?
- A. LTM-D has the lowest commit-id of the group.
- B. LTM-B is the device eligible to initiate a config-sync.
- C. NTP is NOT configured on the devices in the group.
- D. The changes made on LTM-B are invalid.
Answer: B
Explanation:
Explanation/Reference:
NEW QUESTION 44
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?
- A. Server must support HTTP/0.9.
- B. Client must support HTTP keep-alive.
- C. Client must support HTTP/1.0.
- D. Server must support HTTP keep-alive.
Answer: D
NEW QUESTION 45
A failover event is recorded in the log messages:
Jan 01 00:00:50 BIG-IP notice sod[5855]: 01140029:5: HA proc_running tmm fails action is go offline and down links.
Jan 01 00:00:50 BIG-IP notice sod[5855]: 010c0050:5: Sod requests links down.
Jan 01 00:00:50 BIG-IP notice sod[5855]: 010c0054:5: Offline for traffic group /Common/traffic-
group-1.
Jan 01 00:00:50 BIG-IP notice sod[5855]: 010c003e:5: Offline
Jan 01 00:00:50 BIG-IP notice logger: /usr/bin/tmipsecd --tmmcount 4 ==> /usr/bin/bigstart stop
racoon
Jan 01 00:00:50 BIG-IP info lacpd[5502]: 01160016:6: Failover event detected. (Switchboard failsafe disabled while offline)
Jan 01 00:00:51 BIG-IP err bcm56xxd[5296]: 012c0010:3: Failover event detected. Marking external interfaces down. bsx.c(3633)
Jan 01 00:00:51 BIG-IP info bcm56xxd[5296]: 012c0015:6: Link: 1.1 is DOWN
Jan 01 00:00:56 BIG-IP notice mcpd[5318]: 0107143c:5: Connection to CMI peer 10.0.0.3 has been removed
Jan 01 00:00:56 BIG-IP notice mcpd[5318]: 0107143a:5: CMI reconnect timer: enabled
Jan 01 00:00:56 BIG-IP notice mcpd[5318]: 01071431:5: Attempting to connect to CMI peer
10.0.0.3 port 6699
What is the cause of the failover?
- A. A switchboard failure caused system fail-safe to initiate the failover.
- B. TMM failed, and system fail-safe initiated the failover.
- C. TMM failed, and VLAN fail-safe initiated the failover.
- D. Loss of connection to CMI peer 10.0.0.3 initiated the failover.
Answer: B
NEW QUESTION 46
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?
- A. The User-Agent header contains an invalid character.
- B. The web server is NOT expecting a keep-alive connection.
- C. The web server is configured to accept HTTP 1.0 requests only.
- D. The client request does NOT include a Host header.
Answer: D
NEW QUESTION 47
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?
- A. Add a backslash before the colon in the receive string.
- B. Use an HTTPS monitor with a valid certificate instead.
- C. Add an NTLM profile to the virtual server.
- D. Add a valid username and password to the monitor.
Answer: D
NEW QUESTION 48
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?
- A. Trailer
- B. Server
- C. Referer
- D. Via
Answer: C
NEW QUESTION 49
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?
- A. Server must support HTTP/0.9.
- B. Client must support HTTP keep-alive.
- C. Client must support HTTP/1.0.
- D. Server must support HTTP keep-alive.
Answer: D
NEW QUESTION 50
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?
- A. when HTTP_RESPONSE {
if { [HTTP::is_3xx] } {
log local0. "redirecting client ip address [IP::addr [IP::remote_addr]]"
}
} - B. when HTTP_RESPONSE {
if { [HTTP::is_redirect] } {
log local0. "redirecting client ip address [IP::addr [IP::remote_addr]]"
}
} - C. when HTTP_REQUEST {
if { [HTTP::is_301] } {
log local0. "redirecting client ip address [IP::addr [IP::remote_addr]]"
}
} - D. when HTTP_REQUEST {
if { [HTTP::is_redirect] } {
log local0. "redirecting client ip address [IP::addr [IP::remote_addr]]"
}
}
Answer: B
NEW QUESTION 51
-- Exhibit -
-- Exhibit --
Refer to the exhibits.
Users are able to access the application when connecting to the virtual server but are unsuccessful when connecting directly to the application servers. The LTM Specialist wants to allow direct access to the application servers.
Why are users unable to connect directly to the application servers?
- A. The router does NOT have a route to the server subnet.
- B. The web server does NOT have a correct default gateway.
- C. The LTM device does NOT have a SNAT on the External VLAN.
- D. The LTM device does NOT have an IP Forwarding virtual server on the External VLAN.
- E. The LTM device does NOT have an IP Forwarding virtual server on the Internal VLAN.
Answer: B
NEW QUESTION 52
-- Exhibit -
-- Exhibit --
Refer to the exhibit.
A user is unable to access an application.
What is the root cause of the problem?
- A. The user failed authentication.
- B. The User-Agent is incorrect.
- C. The GET request uses the wrong syntax.
- D. The 'Content-Length' is zero.
Answer: A
NEW QUESTION 53
-- Exhibit -
-- Exhibit -
Refer to the exhibits.
An LTM Specialist is reconfiguring a virtual server to redirect all clients to HTTPS. Testing reveals that the redirect is functioning incorrectly. As part of the troubleshooting process, the LTM Specialist performs a packet capture.
What is the issue?
- A. The virtual server is missing a clientssl profile.
- B. The virtual server is incorrectly processing the HTTP request.
- C. The redirect is causing an infinite loop.
- D. The redirect is sending the client to the incorrect location.
Answer: D
NEW QUESTION 54
-- 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.
ltm monitor http http_mon { defaults-from http destination *:* interval 5 recv "200 OK" send "GET /\\r\\n" time-until-up 0 timeout 16 }
What is the issue?
- A. The pool member is responding with a 404.
- B. The HTTP headers are compressed.
- C. The request is NOT being received by the pool member.
- D. The pool member is responding without HTTP headers.
Answer: D
NEW QUESTION 55
An LTM Specialist is receiving reports from customers about multiple applications failing to work properly. The LTM Specialist looks at the services running and notices that the bigd process has NOT started.
How are monitored LTM device objects marked when the bigd process is stopped?
- A. green or available
- B. red or offline
- C. unchanged until bigd is restarted
- D. blue or unchecked
Answer: C
NEW QUESTION 56
-- 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?
- A. GET /\r\nHTTP/1.0\r\n\r\n
- B. GET /\r\nHost: \r\n\r\n
- C. GET / HTTP/1.0\r\n\r\n
- D. GET /\r\n\r\n
Answer: C
NEW QUESTION 57
-- Exhibit -
-- Exhibit --
Refer to the exhibits.
Users are able to access the application when connecting to the virtual server but are unsuccessful when connecting directly to the application servers. The LTM Specialist wants to allow direct access to the application servers.
Which configuration change resolves this problem?
- A. Configure a route to the web server subnet on the network router.
- B. Enable port 443 on the virtual server.
- C. Configure an IP Forwarding virtual server on the LTM device.
- D. Disable address translation on the virtual server.
- E. Configure a SNAT pool on the LTM device.
Answer: C
Explanation:
Explanation/Reference:
NEW QUESTION 58
An LTM Specialist needs to modify the logging level for tcpdump execution events. Checking the BigDB Key, the following is currently configured:
sys db log.tcpdump.level {
value "Notice"
}
Which command should the LTM Specialist execute on the LTM device to change the logging level to informational?
- A. tmsh set /sys db log.tcpdump.level status informational
- B. tmsh set /sys db log.tcpdump.level value informational
- C. tmsh modify /sys db log.tcpdump.level status informational
- D. tmsh modify /sys db log.tcpdump.level value informational
Answer: D
NEW QUESTION 59
-- Exhibit -
-- 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?
- A. The application servers are NOT listening on port 80.
- B. The SSL handshake between the LTM device and the server is failing.
- C. The virtual server does NOT have a clientSSL profile assigned.
- D. The LTM device is sending non-SSL traffic to an SSL port.
Answer: D
NEW QUESTION 60
An LTM Specialist needs to modify the logging level for tcpdump execution events. Checking the BigDB Key, the following is currently configured:
sys db log.tcpdump.level {
value "Notice"
}
Which command should the LTM Specialist execute on the LTM device to change the logging level to informational?
- A. tmsh set /sys db log.tcpdump.level status informational
- B. tmsh set /sys db log.tcpdump.level value informational
- C. tmsh modify /sys db log.tcpdump.level status informational
- D. tmsh modify /sys db log.tcpdump.level value informational
Answer: D
NEW QUESTION 61
An LTM device is load balancing telnet and ssh applications in a client/server environment experiencing significant packet delay.
Which setting in the TCP profile should reduce the amount of packet delay?
- A. disable Bandwidth Delay
- B. disable Nagle's Algorithm
- C. enable Proxy Maximum Segment
- D. increase Maximum Segment Retransmissions
Answer: B
NEW QUESTION 62
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 server traffic specifically for this application?
- A. tcpdump -ni vlan301 -s 0 'port 80 and host 10.0.0.1' -w /var/tmp/trace.cap
- B. tcpdump -ni 0.0:nnn -s 0 'host 10.0.0.1' -w /var/tmp/trace.cap
- C. 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
- D. 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
Answer: C
NEW QUESTION 63
-- Exhibit-
-- Exhibit --
Refer to the exhibit.
Which step should an LTM Specialist take to utilize AVR?
- A. provision AVR
- B. install the AVR add-on
- C. reboot the device
- D. license the device for AVR
Answer: A
NEW QUESTION 64
The pool members are serving up simple static web content.
The current virtual server configuration is given as follows: tmsh list ltm virtual simple
ltm virtual simple { destination 10.10.10.10:80 ip-protocol tcp mask 255.255.255.255 profiles { http { } httpcompression { } oneconnect { } tcp { } } snat automap vlans-disabled
}
tmsh list ltm pool simple_pool ltm pool simple_pool { members {
10.10.10.11:80 { address 10.10.10.11 }
10.10.10.12:80
{ address 10.10.10.12 }
10.10.10.12:80
{ address 10.10.10.13 } }
}
Which three objects in the virtual server configuration can be removed without disrupting functionality of the virtual server? (Choose three.)
- A. httpcompression
- B. http
- C. tcp
- D. oneconnect
- E. snat automap
Answer: A,B,D
NEW QUESTION 65
-- Exhibit-
-- Exhibit -
Refer to the exhibits.
An LTM device has been configured for load balancing a number of different application servers. Configuration changes need to be made to the LTM device to allow administrative management of the servers in 172.16.10/24, 172.16.20/24, and 172.16.30/24 networks. The servers require outbound access to numerous destinations for operations.
Which solution has the simplest configuration changes while maintaining functionality and basic security?
- A. Enable 172.16.10.0:0/24, 172.16.20.0:0/24, and 172.16.30.0:0/24 on ingress VLAN(s), and enable 0.0.0.0:0/0.0.0.0 on egress VLAN(s).
- B. Replace 172.16.10.0:0/24, 172.16.20.0:0/24, and 172.16.30.0:0/24, with 172.16.0.0:0/16, and keep 0.0.0.0:0/0.0.0.0.
- C. Remove 172.16.10.0:0/24, 172.16.20.0:0/24, and 172.16.30.0:0/24, and keep 0.0.0.0:0/0.0.0.0 enabled on all VLANs.
- D. Enable 172.16.10.0:0/24, 172.16.20.0:0/24, and 172.16.30.0:0/24 on egress VLAN(s), and enable 0.0.0.0:0/0.0.0.0 on ingress VLAN(s).
Answer: A
NEW QUESTION 66
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?
- A. HTTP Method
- B. Cookie content
- C. User-Agent Value
- D. Accept-Encoding header
Answer: D
NEW QUESTION 67
A OneConnect profile is applied to a virtual server. The LTM Specialist would like the client source IP addresses within the 10.10.10.0/25 range to reuse an existing server side connection.
Which OneConnect profile source mask should the LTM Specialist use?
- A. 255.255.255.224
- B. 255.255.255.255
- C. 0.0.0.0
- D. 255.255.255.128
- E. 255.255.255.0
Answer: D
NEW QUESTION 68
......
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