[2022年01月14日]301b認定ガイド問題と解答トレーニング
301b認定お試しセット最新301bのPDF問題集
質問 18
-- Exhibit-
-- Exhibit -
Refer to the exhibits.
How should the LTM Specialist minimize the configuration?
- A. The configuration is as minimized as possible.
- B. Create a single monitor and apply it to each pool member.
- C. Create a single monitor, apply it to the pool, and remove the pool member level monitors.
- D. Remove the pool member level monitors.
正解: C
質問 19
-- Exhibit -
-- Exhibit -
Refer to the exhibits.
How should the LTM Specialist minimize the configuration?
- A. The configuration is as minimized as possible.
- B. Create a single monitor and apply it to each pool member.
- C. Create a single monitor, apply it to the pool, and remove the pool member level monitors.
- D. Remove the pool member level monitors.
正解: C
質問 20
A virtual server for a set of web services is constructed on an LTM device. The LTM Specialist has created an iRule and applied this iRule to the virtual server:
when HTTP_REQUEST {
switch [HTTP::uri] {
"/WS1/ws.jsp" {
log local0. "[HTTP::uri]-Redirected to JSP Pool"
pool JSP
}
default { log local0. "[HTTP::uri]-Redirected to Non-JSP Pool"
pool NonJSP
}
}
}
However, the iRule is NOT behaving as expected. Below is a snapshot of the log:
/WS1/ws.jsp-Redirected to JSP Pool
/WS1/ws.jsp-Redirected to JSP Pool
/WS1/ws.jsp-Redirected to JSP Pool
/WS1/WS.jsp-Redirected to Non-JSP Pool
/ws1/WS.jsp-Redirected to Non-JSP Pool
/WS1/ws.jsp-Redirected to JSP Pool
/ws1/ws.jsp-Redirected to Non-JSP Pool
What is the problem?
- A. The "Process Case-Insensitivity" option for the virtual server needs to be selected.
- B. The 'switch' command in the iRule has been used incorrectly.
- C. The pool members of both pools need to be set up as case-insensitive members.
- D. The condition in the iRule is case sensitive.
正解: D
質問 21
An LTM Specialist connects to an LTM device via the serial console cable and receives unreadable output. The LTM Specialist is using the appropriate cable and connecting it to the correct serial port.
Which command should the LTM Specialist run through ssh to verify that the baud rate settings for the serial port are correct on the LTM device?
- A. tmsh list /sys console
- B. tmsh show /sys console
- C. tmsh show /ltm console
- D. tmsh edit /sys console
正解: B
質問 22
An LTM device pair is configured for failover and connection mirroring. The LTM devices are configured with virtual servers for HTTP, HTTPS with SSL offload, and SSH. An event occurs that causes a failover. HTTP and SSH sessions active at the time of failover remain active, but HTTPS sessions are dropped.
What is the root cause of this problem?
- A. Connection mirroring was NOT enabled for the HTTPS virtual servers.
- B. The SSL certificates on the LTM devices do NOT match.
- C. Connection mirroring is incompatible with clientssl profiles.
- D. SNAT automap was NOT enabled for the HTTPS virtual servers.
正解: C
質問 23
-- 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?
- A. Add the 'http' monitor to the pool.
- B. Add the 'icmp' monitor to the node.
- C. Correct the firewall rules on the pool member.
- D. Modify the receive string to valid content.
正解: D
質問 24
An IT administrator wants to log which server is being load balanced to by a user with IP address 10.10.10.25.
Which iRule should the LTM Specialist use to fulfill the request?
- A. when CLIENT_ACCEPTED {
if { [IP::addr [clientside [IP::remote_addr]] equals 10.10.10.25]} {
log local0. "client 10.10.10.25 connected to pool member [IP::addr [LB::server addr]]" }
} - B. when CLIENT_ACCEPTED {
if { [IP::addr [IP::remote_addr] equals 10.10.10.25]} {
log local0. "client 10.10.10.25 connected to pool member [IP::addr [LB::server addr]]" }
} - C. when SERVER_CONNECTED {
if { [IP::addr [clientside [IP::remote_addr]] equals 10.10.10.25]} {
log local0. "client 10.10.10.25 connected to pool member [IP::addr [LB::server addr]]" }
} - D. when SERVER_CONNECTED {
if { [IP::addr [IP::remote_addr]] equals 10.10.10.25]} {
log local0. "client 10.10.10.25 connected to pool member [IP::addr [LB::server addr]]" }
}
正解: C
質問 25
An LTM Specialist uploaded new releases .iso and .md5 files titled "BIGIP-FILENAME" via the GUI.
Which commands are run via the command line from the root directory to verify the integrity of the new .iso file?
- A. cd /var/shared/images md5sum --check BIGIP-FILENAME.iso
- B. cd /var/shared/images md5sum --check BIGIP-FILENAME.iso.md5
- C. cd /shared/images md5sum --check BIGIP-FILENAME.iso
- D. cd /shared/images md5sum --check BIGIP-FILENAME.iso.md5
正解: D
質問 26
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. increase Maximum Segment Retransmissions
- C. disable Nagle's Algorithm
- D. enable Proxy Maximum Segment
正解: C
質問 27
An LTM Specialist connects to an LTM device via the serial console cable and receives unreadable output.
The LTM Specialist is using the appropriate cable and connecting it to the correct serial port.
Which command should the LTM Specialist run through ssh to verify that the baud rate settings for the serial port are correct on the LTM device?
- A. tmsh list /sys console
- B. tmsh show /sys console
- C. tmsh show /ltm console
- D. tmsh edit /sys console
正解: B
質問 28
-- Exhibit -
-- Exhibit -Refer to the exhibit. Users report that a web application works incorrectly. Sometimes contextual data displayed on
the web pages is accurate; other times it is inaccurate.
The LTM administrator looks at the connection table with a filter on one of the client IP addresses currently connected using the command "tmsh show sys connection cs-client-addr 10.0.20.1"
with the following results:
10.0.20.1:60048 10.0.20.88:80 10.0.20.1:60048 172.16.20.1:80 tcp 3 (tmm: 0) 10.0.20.1:60050 10.0.20.88:80 10.0.20.1:60050 172.16.20.3:80 tcp 3 (tmm: 0) 10.0.20.1:60047 10.0.20.88:80 10.0.20.1:60047 172.16.20.2:80 tcp 3 (tmm: 0) 10.0.20.1:60049 10.0.20.88:80 10.0.20.1:60049 172.16.20.1:80 tcp 3 (tmm: 0)
What is the solution to the problem?
- A. Synchronize the clock of the LTM device with NTP.
- B. Modify the setup of the monitor bound to the pool used by the application.
- C. Modify the load balancing method attached to the pool.
- D. Set up an HTTP cookie insert profile in the virtual server.
正解: D
質問 29
-- Exhibit -
-- Exhibit --
Refer to the exhibit.
Which two items can be consolidated to simplify the LTM configuration? (Choose two.)
- A. /Common/vs4-https-redirect
- B. /Common/vs2-https-redirect
- C. /Common/vs3-https-redirect
- D. /Common/vs5-https-redirect
- E. /Common/vs1-https-redirect
正解: A,E
質問 30
An LTM Specialist must perform a packet capture on a virtual server with an applied standard FastL4 profile.
The virtual server 10.0.0.1:443 resides on vlan301.
Which steps should the LTM Specialist take to capture the data payload successfully while ensuring no other virtual servers are affected?
- A. The LTM device is under light load. The traffic should be mirrored to a dedicated sniffing device. On the sniffing device, the packet capture tcpdump -ni vlan301 should be executed.
- B. A new FastL4 profile should be created and applied to the virtual server with PVA acceleration disabled.
Then the packet capture tcpdump -ni vlan301 should be executed on the command line interface. - C. The packet capture tcpdump -ni vlan301 should be executed on the command line interface. There is no need to change profiles or PVA acceleration.
- D. The standard FastL4 profile should have PVA acceleration disabled. Then the packet capture tcpdump -ni vlan301 should be executed on the command line interface.
正解: B
質問 31
-- Exhibit-
-- Exhibit -
Refer to the exhibit.
A virtual server is set up on an LTM device as follows:
Virtual server address 78.24.213.79
Default Persistence ProfilE.source_addr, 600s.
Pool NamE.Pool1
Pool Members: 10.72.250.52:80 and 10.72.250.60:80 (both on Internal Vlan)
There are several current connections to the virtual server, and pool member
10.72.250.52:80 has been set to a "Disabled" state.
A tcpdump on the Internal Vlan shows traffic going to 10.72.250.52:80.
How soon after the persistence table query was run can existing connections be
refreshed/renewed to ensure that no requests are sent to 10.72.250.52?
- A. 590 seconds
- B. 539 seconds
- C. 460 seconds
- D. 196 seconds
- E. 591 seconds
正解: B
質問 32
-- Exhibit-
-- Exhibit -
Refer to the exhibit.
A company uses a complex piece of client software that connects to one or more virtual servers (VS) hosted on an LTM device. The client software is experiencing issues. An LTM Specialist is tasked with finding the cause of the problem.
The LTM Specialist has the tcpdump extract and knows the client software has at least one connection to a VS on port 1990. However, when a tcpdump runs on the internal VLAN, there is no record of port 1990 in the tcpdump.
Why is there no record of port 1990 in the tcpdump?
- A. Explanation:
-- Exhibit -
Macintosh HD:Users:danielkeller:Desktop:images 301b:LTMB211e1.png
-- Exhibit -
Refer to the exhibit.
A company uses a complex piece of client software that connects to one or more virtual servers hosted on an LTM device. The client software is experiencing issues. An LTM Specialist must determine the cause of the problem.
The LTM Specialist has the tcpdump extract and knows the client source IP is
168.210.232.5.
Assuming no wildcard virtual servers, how many distinct virtual servers does the client connect to on the LTM device?
A.2
B.3
C.4
D.6 - B. Port 1990 is a well-known port, so its use is restricted.
- C. The LTM device drops the connection.
- D. The LTM device performs a Port Address Translation (PAT).
- E. The LTM device performs a Network Address Translation (NAT).
正解: D
質問 33
There is a fault with an LTM device load balanced trading application that resides on directly connected VLAN vlan-301. The application virtual server is 10.0.0.1:80 with trading application backend servers on subnet 192.168.0.0/25. The LTM Specialist wants to save a packet capture with complete payload for external analysis.
Which command should the LTM Specialist execute on the LTM device command line interface?
- A. tcpdump -vvv -s 0 -nni vlan-301 -w /var/tmp/trace.cap 'net 192.168.0.0/25'
- B. tcpdump -vvv -w /var/tmp/trace.cap 'net 192.168.0.0/25'
- C. tcpdump -vvv -nni vlan-301 -w /var/tmp/trace.cap 'net 192.168.0.0/25'
- D. tcpdump -vvv -s 0 -w /var/tmp/trace.cap 'net 192.168.0.0/25'
正解: A
質問 34
A failover event is recorded in the following log messages:
Jan 01 00:56:56 BIG-IP notice mcpd[5318]: 01070727:5: Pool /Common/my-pool member / Common/10.0.0.10:80 monitor status down.
Jan 01 00:56:56 BIG-IP notice sod[5855]: 010c0045:5: Leaving active, group score 10 peer group score
20.
Jan 01 00:56:56 BIG-IP notice sod[5855]: 010c0052:5: Standby for traffic group /Common/traffic-group-1.
Jan 01 00:56:56 BIG-IP notice sod[5855]: 010c0018:5: Standby
Jan 01 00:57:06 BIG-IP notice logger: /usr/bin/tmipsecd --tmmcount 4 ==> /usr/bin/bigstart stop racoon What is the cause of the failover?
- A. The peer device left the traffic group.
- B. No traffic is seen on traffic-group-1.
- C. The racoon service stopped responding.
- D. The HA group score changed.
正解: D
質問 35
-- Exhibit -
-- Exhibit --
Refer to the exhibit.
An LTM Specialist has uploaded a qkview to F5 iHealth.
Within the GUI, what is the correct procedure to comply with the recommendation shown in the exhibit?
- A. Obtain product version image from release.f5.com.
Overwrite existing image with new product version image.
Select product version image and click Install.
Select the available disk and volume set name. - B. Log a call requesting the product version image via websupport.f5.com Import product version image.
Install image onto BIG-IP platform.
Select product version image and click Install.
Select the available disk and volume set name. - C. Obtain product version image from downloads.f5.com.
Import product version image.
Install image onto BIG-IP platform.
Select product version image and click Install.
Select the available disk and volume set name. - D. Obtain product version image from images.f5.com.
Overwrite existing image with new product version image.
Select product version image and click Install.
Select the available disk and volume set name.
正解: C
質問 36
-- Exhibit - -- Exhibit -
Refer to the exhibit.
An LTM Specialist configures a virtual server that balances HTTP connections to a pool of three application servers. Approximately one out of every three connections to the virtual server fails.
Which two actions will resolve the problem? (Choose two.)
- A. Verify that port lockdown is set to allow port 80.
- B. Enable SNAT automap on the virtual server.
- C. Increase the TCP timeout value in the default TCP profile.
- D. Verify the default gateway on the application servers.
- E. Assign a custom HTTP monitor to the pool.
正解: B,D
質問 37
-- 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. optimized-caching
- B. httpcompression
- C. http
- D. tcp
正解: B
質問 38
The output of a tmsh command is: ------------------------------------------------------------ Net::Interface Name Status Bits Bits Errs Errs Drops Drops Colli In Out In Out In Out sions
------------------------------------------------------------ 1.1 down 0 0 0 0 0 0 0 1.2 up 191.4K 0 0 0 374 0 0 1.3 down 0 0
0 0 0 0 0 1.4 up 22.5K 0 0 0 44 0 0 2.1 miss 0 0 0 0 0 0 0 2.2 miss 0 0 0 0 0 0 0 mgmt up 43.2G 160.0G 0 0 0 0
0
Which command was executed on the LTM device to show the output?
- A. tmsh show /net interface status
- B. tmsh /net show interface
- C. tmsh show /net interface
- D. tmsh /net show interface status
正解: C
質問 39
An LTM Specialist is working with an LTM device configured with 10 virtual servers on the same domain with a different key/cert pair per virtual. For examplE.www.example.com; ftp.example.com; ssh.example.com; ftps.example.com.
What should the LTM Specialist do to reduce the number of objects on the LTM device?
- A. create a transparent virtual server thus eliminating all virtual servers
- B. create a 0 port virtual server and have it answer for all protocols
- C. create a wildcard certificate and use it on all *.example.com virtual servers
- D. create a 0.0.0.0:0 virtual server thus eliminating all virtual servers
正解: C
質問 40
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?
- A. The server has an incorrect date configured.
- B. The client is using the wrong type of browser.
- C. The username and password are incorrect.
- D. The wrong authentication mechanism is being used.
正解: D
質問 41
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F5 301b 認定試験の出題範囲：
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ベストF5 301b学習ガイドと問題集は2022：https://jp.fast2test.com/301b-premium-file.html
トップクラスF5 301b試験最先端学習ガイド！練習問題バージョン：https://drive.google.com/open?id=1hUJ29gF4EeXvdky0yw0eq41LHbWYr09i