301b試験無料問題集（210題）「F5 LTM Specialist: Maintain & Troubleshoot 認定」

出題：1

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?

A. Modify the monitor of the pool.

B. Configure the virtual server to use SNAT.

C. Enable the virtual server.

D. Edit the packet filter rules.

正解：B 解答を投票する

出題：2

An F5 LTM Specialist needs to perform an LTM device configuration backup prior to RMA swap.
Which command should be executed on the command line interface to create a backup?

A. bigpipe config save /var/tmp/backup.ucs

B. tmsh save /sys config /var/tmp/backup.ucs

C. tmsh save /sys config ucs /var/tmp/backup.ucs

D. tmsh save /sys ucs /var/tmp/backup.ucs

正解：D 解答を投票する

出題：3

An LTM Specialist is creating a custom EAV monitor.
In which directory should the LTM Specialist upload the script?

A. /usr/bin/monitors

B. /usr/monitors

C. /config/templates

D. /usr/monitor

E. /config/monitors

正解：E 解答を投票する

出題：4

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?

A. Trailer

B. ETag

C. From

D. Expect

正解：A 解答を投票する

出題：5

-- Exhibit-

-- Exhibit --
Refer to the exhibit.
Which two items can be consolidated to simplify the LTM configuration? (Choose two.)

A. /Common/vs2-https-redirect

B. /Common/vs4-https-redirect

C. /Common/vs1-https-redirect

D. /Common/vs5-https-redirect

E. /Common/vs3-https-redirect

正解：B,C 解答を投票する

出題：6

-- 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. However, the monitor is marking the member as down. The LTM Specialist captures the monitor traffic via tcpdump.
What is the issue?

A. The pool member is rejecting the monitor request.

B. The 'time-until-up' setting on the monitor is incorrect.

C. The server is marking the connection as closed.

D. The monitor request is NOT returning the page body.

正解：D 解答を投票する

出題：7

-- Exhibit-

-- Exhibit --
Refer to the exhibit.
The virtual server is listening on port 443.
What is the solution to the problem?

A. Add an SSL Client profile to the existing virtual server.

B. Modify the virtual server TCP profile to disable Nagle's Algorithm.

C. Modify the virtual server HTTP Profile to 'Redirect RewritE.Matching'.

D. Modify the virtual server HTTP Profile to 'Redirect RewritE.All'.

正解：D 解答を投票する

出題：8

An LTM device is monitoring three pool members. One pool member is being marked down.
What should the LTM Specialist enable to prevent the server from being flooded with connections once its monitor determines it is up?

A. fastest load balance algorithm

B. manual resume

C. hold down timer

D. slow ramp timer

E. packet shaping

正解：D 解答を投票する

出題：9

-- Exhibit-

-- Exhibit -
Refer to the exhibits.
How should the LTM Specialist minimize the configuration?

A. Create a single monitor and apply it to each pool member.

B. The configuration is as minimized as possible.

C. Remove the pool member level monitors.

D. Create a single monitor, apply it to the pool, and remove the pool member level monitors.

正解：D 解答を投票する

出題：10

-- Exhibit-

-- Exhibit -Refer to the exhibits.
Every monitor has the same Send String, Recv String, and an Alias of *:*. The LTM Specialist simplifies the configuration to minimize the number of monitors.
How many unique monitors remain?

正解：A 解答を投票する

出題：11

What do the following iRule commands do when they are used in the same iRule?
set hsl [HSL::open -proto UDP -pool syslog_server_pool]
HSL::send $hsl "<190> [HTTP::host] from [whereis [IP::client_addr] country continent state city zip] , IP: [IP::client_addr]"

A. The commands set up a high-speed logging connection and then send the geographical database to the server.

B. The commands set up a high-speed logging connection and then send the host header and client geographical detail to the connection.

C. The commands set up a high-speed logging connection and then send the host header, HTTP payload, and client geographical detail to the connection.

D. The commands set up a high-speed logging connection to the LTM device and then send the host header and client geographical detail to the connection.

正解：B 解答を投票する

出題：12

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 value informational

B. tmsh modify /sys db log.tcpdump.level value informational

C. tmsh modify /sys db log.tcpdump.level status informational

D. tmsh set /sys db log.tcpdump.level status informational

正解：B 解答を投票する

出題：13

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?

A. 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

B. 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

C. tcpdump -ni 0.0:nnn -s 0 'host 10.0.0.1' -w /var/tmp/trace.cap

D. tcpdump -ni vlan301 -s 0 'port 80 and host 10.0.0.1' -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

正解：D 解答を投票する

出題：14

An LTM Specialist is investigating reports from users that SSH connections are being terminated unexpectedly. SSH connections are load balanced through a virtual server. The users experiencing this problem are running SQL queries that take upwards of 15 minutes to return with no screen output. The virtual server is standard with a pool associated and no other customizations.
What is causing the SSH connections to terminate?

A. TCP idle timeout

B. UDP IP ToS

C. The virtual server has no persistence.

D. The pool has Reselect Retries set to 0.

正解：A 解答を投票する

出題：15

-- Exhibit-

-- Exhibit --
Refer to the exhibit.
An LTM Specialist is upgrading the LTM devices.
Which device should be upgraded first?

A. Device A

B. Device B

C. Device C

D. Device D

正解：C 解答を投票する

出題：16

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?

A. visible only via the console

B. in the /var/log/ltm log file

C. in the /var/log/tmm log file

D. in the /var/log/kern.log file

正解：B 解答を投票する

出題：17

An LTM Specialist is tasked with ensuring that the syslogs for the LTM device are sent to a remote syslog server.
The following is an extract from the config file detailing the node and monitor that the LTM device is using for the
remote syslog server:
monitor Syslog_15002 { defaults from udp dest *:15002 }
node 91.223.45.231 { monitor Syslog_15002 screen RemoteSYSLOG }
There seem to be problems communicating with the remote syslog server. However, the pool monitor shows that the remote server is up.
The network department has confirmed that there are no firewall rules or networking issues preventing the LTM device from
communicating with the syslog server. The department responsible for the remote syslog server indicates that there may
be problems with the syslog server. The LTM Specialist checks the BIG-IP LTM logs for errors relating to the remote syslog server. None are found. The LTM Specialist does a tcpdump:
tcpdump -nn port 15002, with the following results: 21:28:36.395543 IP 192.168.100.100.44772 > 91.223.45.231.15002: UDP, length 19 21:28:36.429073 IP 192.168.100.100.39499 > 91.223.45.231.15002: UDP, length 169 21:28:36.430714 IP 192.168.100.100.39499 > 91.223.45.231.15002: UDP, length 181 21:28:36.840524 IP 192.168.100.100.39499 > 91.223.45.231.15002: UDP, length 169 21:28:36.846547 IP 192.168.100.100.39499 > 91.223.45.231.15002: UDP, length 181 21:28:39.886343 IP 192.168.100.100.39499 > 91.223.45.231.15002: UDP, length 144
NotE.192.168.100.100 is the self IP of the LTM device.
Why are there no errors for the remote syslog server in the log files?

A. The "verbose" logging option needs to be enabled for the pool.

B. When the remote syslog sever fails, it returns to service before the timeout for the monitor has expired.

C. The -log option for tcpdump needs to be used.

D. The monitor type used is inappropriate.

正解：D 解答を投票する

出題：18

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. Use an HTTPS monitor with a valid certificate instead.

B. Add an NTLM profile to the virtual server.

C. Add a backslash before the colon in the receive string.

D. Add a valid username and password to the monitor.

正解：D 解答を投票する

出題：19

-- Exhibit-

-- Exhibit -
Refer to the exhibit.
Which profile could be removed or changed on this virtual server to reduce CPU load on the LTM device without increasing server side bandwidth usage?

A. http

B. tcp

C. httpcompression

D. optimized-caching

正解：C 解答を投票する

出題：20

Given LTM device ltm log:
Sep 26 20:51:08 local/lb-d-1 notice promptstatusd[3695]: 01460006:5: semaphore mcpd.running(1) held
Sep 26 20:51:08 local/lb-d-1 notice promptstatusd[3695]: 01460006:5:
Sep 26 20:51:08 local/lb-d-1 warning promptstatusd[3695]: 01460005:4: mcpd.running(1) held, wait for mcpd
Sep 26 20:51:08 local/lb-d-1 info sod[3925]: 010c0009:6: Lost connection to mcpd reestablishing.
Sep 26 20:51:08 local/lb-d-1 err bcm56xxd[3847]: 012c0004:3: Lost connection with MCP: 16908291 ... Exiting bsx_connect.cpp(174)
Sep 26 20:51:08 local/lb-d-1 info bcm56xxd[3847]: 012c0012:6: MCP Exit Status Sep 26 20:51:08 local/lb-d-1 info bcm56xxd[3847]: 012c0012:6: Info: LACP stats (time now:1348717868) : no traffic
Sep 26 20:51:08 local/lb-d-1 info bcm56xxd[3847]: 012c0014:6: Exiting...
Sep 26 20:51:08 local/lb-d-1 err lind[3842]: 013c0004:3: IO error on recv from mcpd connection lost Sep 26 20:51:08 local/lb-d-1 notice bigd[3837]: 01060110:5: Lost connection to mcpd with
error 16908291, will reinit connection.
Sep 26 20:51:08 local/lb-d-1 err statsd[3857]: 011b0004:3: Initial subscription for system configuration failed with error '' Sep 26 20:51:08 local/lb-d-1 err statsd[3857]: 011b0001:3: Connection to mcpd failed with
error '011b0004:3: Initial subscription for system configuration failed with error '''
Sep 26 20:51:08 local/lb-d-1 err csyncd[3851]: 013b0004:3: IO error on recv from mcpd connection lost .............skipping more logs..... Sep 26 20:51:30 local/lb-d-1 notice sod[3925]: 01140030:5: HA proc_running bcm56xxd is
now responding.
Sep 26 20:51:34 local/lb-d-1 notice sod[3925]: 01140030:5: HA proc_running mcpd is now responding. Sep 26 20:51:34 local/lb-d-1 notice sod[3925]: 010c0018:5: Standby
Which daemon failed?

A. promptstatusd

B. mcpd

C. lind

D. bcm56xxd

E. sod

正解：B 解答を投票する

301b試験無料問題集「F5 LTM Specialist: Maintain & Troubleshoot 認定」