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

質問 1

An LTM device is running BIG-IP v10.2.0 software. The LTM Specialist is tasked with upgrading the LTM device to BIG-IP v11.2.0 HF1. The LTM Specialist starts the upgrade process by selecting the uploaded Hotfix and installing to an unused volume. After 10 minutes,the LTM Specialist checks the status of the upgrade process and notices that the process is stalled at 0%.
What should the LTM Specialist verify?

（A）the selected volume has sufficient space available

（B）the LTM device has an available Internet connection via the management interface

（C）the LTM device has been restarted into maintenance mode

（D）the base software version exists on the LTM device

正解：D 解答を投票する

質問 2

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 modify /sys db log.tcpdump.level value informational

（B）tmsh modify /sys db log.tcpdump.level status informational

（C）tmsh set /sys db log.tcpdump.level value informational

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

正解：A 解答を投票する

質問 3

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）bcm56xxd

（B）lind

（C）promptstatusd

（D）mcpd

（E）sod

正解：D 解答を投票する

質問 4

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 '(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

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

（D）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

正解：D 解答を投票する

質問 5

An LTM Specialist is troubleshooting virtual server 10.0.0.1:443 residing on VLAN vlan301. The web application is accessed via www.example.com. The LTM Specialist wants to save a packet capture with complete decrypted payload for external analysis.
Which command should the LTM Specialist execute on the LTM device command line interface?

（A）ssldump -Aed -ni vlan301 -k /config/filestore/files_d/Common_d/certificate_key_d/:Common:www.example.com.key_1 > /var/tmp/trace.cap

（B）tcpdump -vvv -s 0 'host 10.0.0.1 and port 443' -w /var/tmp/trace.cap

（C）ssldump -Aed -k /config/filestore/files_d/Common_d/certificate_key_d/:Common:www.example.com.key_1 > /var/tmp/trace.cap

（D）tcpdump -vvv -s 0 -ni vlan301 'host 10.0.0.1 and port 443' -w /var/tmp/trace.cap

正解：A 解答を投票する

質問 6

-- Exhibit-

-- Exhibit --
Refer to the exhibit.
Which step should an LTM Specialist take next to finish upgrading to HD1.3?

（A）Install image to HD1.3

（B）Install hotfix to HD1.3

（C）Relicense HD1.3

（D）Activate HD1.3

正解：D 解答を投票する

質問 7

Which two subsystems could the LTM Specialist utilize to access an LTM device with lost management interface connectivity? (Choose two.)

（A）SCCP

（B）ALOM

（C）AOM

（D）ILO

正解：A、C 解答を投票する

質問 8

An LTM device pool has suddenly been marked down by a monitor. The pool consists of members 10.0.1.1:443 and 10.0.1.2:443 and are verified to be listening. The affected virtual server is 10.0.0.1:80.
Which two tools should the LTM Specialist use to troubleshoot the associated HTTPS pool monitor via the command line interface? (Choose two.)

（A）curl

（B）telnet

（C）tcpdump

（D）ssldump

正解：A、D 解答を投票する

質問 9

-- Exhibit-

-- Exhibit -
Refer to the exhibit.
The decoded TCPDump capture is a trace of a failing health monitor. The health monitor is sending the string shown in the capture; however, the server response is NOT as expected. The receive string is set to 'SERVER IS UP'.
What is the solution?

（A）Incorrect syntax in send string. 'HTTP/1.1' should be 'HTTP1.1'.

（B）Incorrect syntax in send string. 'Connection: Close' should be 'Connection: Open'.

（C）The GET request Host header field requires a host name.

（D）The /test_page.html does NOT exist on the web server and should be added.

正解：D 解答を投票する

質問 10

An LTM Specialist realizes that a datacenter engineer has changed the console baud rate.
Which command determines the current baud rate via the command line interface?

（A）tmsh list /sys baud-rate

（B）tmsh show /ltm console

（C）tmsh list /net baud-rate

（D）tmsh show /sys console

正解：D 解答を投票する

質問 11

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

（B）The virtual server does NOT have a clientSSL profile assigned.

（C）The application servers are NOT listening on port 80.

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

正解：A 解答を投票する

質問 12

Given:
Filesystem Size Used Avail Use% Mounted on /dev/md11 248M 248M 0 100% / /dev/md13 3.0G 76M 2.8G 3% /config /dev/md12 1.7G 1.1G 476M 71% /usr /dev/md14 3.0G 214M 2.6G 8% /var /dev/md0 30G 2.2G 26G 8% /shared /dev/md1 6.9G 288M 6.3G 5% /var/log none 3.9G 452K 3.9G 1% /dev/shm none 3.9G 19M 3.9G 1% /var/tmstat none 3.9G 1.2M 3.9G 1% /var/run prompt 4.0M 12K 4.0M 1% /var/prompt /dev/md15 12G 8.3G 3.1G 74% /var/lib/mysql
Which command is used to produce this output?

（A）vmstat

（B）du

（C）df

（D）lsof

（E）ps

正解：C 解答を投票する

質問 13

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?

（A）SNAT Pool

（B）Virtual Server Port Translation

（C）Pool Member

（D）Port Lockdown

正解：A 解答を投票する

質問 14

A user is having issues with connectivity to an HTTPS virtual server. The virtual server is on the LTM device's external vlan, and the pools associated with the virtual server are on the internal vlan. An LTM Specialist does a tcpdump on the external interface and notices that the host header is incomplete.
In which location should the LTM Specialist put a traffic analyzer to gather the most pertinent data?

（A）client machine

（B）internal VLAN

（C）external VLAN

（D）server

正解：A 解答を投票する

質問 15

-- 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. After trying Mozilla Firefox and Internet Explorer browsers, the client still receives the same errors.
The LTM Specialist does an ssldump on the virtual server and receives the results as per the exhibit.
What is the problem?

（A）The BIG-IP LTM is NOT listening on port 443.

（B）The client needs to be upgraded to the appropriate cipher-suite.

（C）The BIG-IP LTM is NOT serving a certificate.

（D）The SSL key length is incorrect.

正解：C 解答を投票する

質問 16

Which three HTTP headers allow an application server to determine the client's language compatibility, browser, operating system type, and compression compatibility? (Choose three.)

（A）Host

（B）User-Agent

（C）Accept-Language

（D）Accept-Encoding

（E）Accept

正解：B、C、D 解答を投票する

質問 17

-- Exhibit-

-- 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 <mss 1450,nop,nop,sackOK>
00:25:07.598537 IP 195.56.67.90.https > 168.210.232.5.33159: S 2690691360:2690691360(0) ack 1920647965 win 4350 <mss 1460,sackOK,eol>
00:25:07.598851 IP 168.210.232.5.33160 > 195.56.67.90.https: S 2763858764:2763858764(0) win 8192 <mss 1450,nop,nop,sackOK>
00:25:07.598858 IP 195.56.67.90.https > 168.210.232.5.33160: S 1905576176:1905576176(0) ack 2763858765 win 4350 <mss 1460,sackOK,eol>
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 <mss 1460,nop,wscale 0,sackOK,eol>
What is the problem?

（A）The DNS entry for website.com is incorrect.

（B）The subnet masks of the pool members of pool WebServices1 and the f5 'Internal' Vlan are incorrect.

（C）The filters on the tcpdumps are incorrect.

（D）The firewall is dropping the connection coming from the pool members returned to the client.

（E）The virtual server 'WEBSERVICES1' is listening on the incorrect port.

正解：D 解答を投票する

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

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