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F5 Networks Certification Study Materials Dumps 301b Exam for Full Questions - Exam Study Guide
NEW QUESTION 113
Internet clients connecting to a virtual server to download a file are experiencing about 150 ms of latency and no packet loss.
Which built-in client-side TCP profile provides the highest throughput?
- A. tcp-wan-optimized
- B. tcp-legacy
- C. tcp
- D. tcp-lan-optimized
Answer: A
NEW QUESTION 114
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 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 } } }
How should the LTM Specialist resolve this issue?
- A. Add an HTTP profile to the virtual server.
- B. Select the correct protocol for the virtual server.
- C. Enable the pool member on the correct VLAN.
- D. Remove an HTTP monitor from the pool.
Answer: B
NEW QUESTION 115
-- Exhibit - -- Exhibit -
Refer to the exhibits.
Which URL on which server is causing the highest latency for users?
- A. /reflector.php on 172.16.20.2
- B. /slow1.php on 172.16.20.3
- C. /Compress.HTML on 172.16.20.1
- D. /slow2.php on 172.16.20.1
Answer: B
NEW QUESTION 116
While investigating the cause of a device failover, an LTM Specialist discovers the following events in /var/log/ltm:
01010029:5: Clock advanced by 518 ticks 01010029:5: Clock advanced by 505 ticks 01010029:5: Clock advanced by 590 ticks 01010029:5: Clock advanced by 568 ticks 01010029:5: Clock advanced by 1681 ticks 01010029:5: Clock advanced by 6584 ticks 01140029:5: HA daemon_heartbeat tmm fails action is failover and restart. 010c0026:5: Failover condition, active attempting to go standby.
Which issue caused the failover?
- A. HA missing heartbeat packets
- B. NTP being out of sync
- C. VLAN Fail-safe heartbeats
- D. TMM being descheduled
Answer: D
NEW QUESTION 117
An LTM Specialist is running the following packet capture on an LTM device:
ssldump -Aed -ni vlan301 'port 443'
Which two SSL record message details will the ssldump utility display by default? (Choose two.)
- A. ClientHello
- B. Issuer
- C. ServerHello
- D. HTTP Version
- E. User-Agent
Answer: A,C
NEW QUESTION 118
-- 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 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. - D. 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.
Answer: D
NEW QUESTION 119
-- Exhibit-
-- Exhibit --
Refer to the exhibit.
An LTM Specialist is investigating intermittent page load issues being reported by users.
What should the LTM Specialist do to resolve the issue?
- A. Remove least connections load balancing method on virtual server.
- B. Remove HTTP monitor on the pool.
- C. Select least connections load balancing method on virtual server.
- D. Assign an HTTP monitor to the pool.
Answer: D
NEW QUESTION 120
Given the iRule:
when HTTP_REQUEST {
if {([HTTP::username] ne "") and ([HTTP::password] ne "") } {
log local0. "client ip [IP::remote_addr] credentials provided [HTTP::username] [HTTP::password]"}
else {
pool old_application_pool
}
}
The associated virtual server has a default pool named new_application_pool.
Which functionality does the iRule provide?
- A. Allows clients without credentials to access the old_application_pool and logs the access of clients with credentials to the new_application_pool.
- B. Allows clients with credentials to access the old_application_pool and logs the attempted access of clients with credentials to the new_application_pool.
- C. Allows clients without credentials to access the old_application_pool and logs the attempted access of clients without credentials to the new_application_pool.
- D. Allows clients with credentials to access the old_application_pool and logs the access of clients without credentials to the new_application_pool.
Answer: A
NEW QUESTION 121
-- Exhibit -
-- Exhibit --
Refer to the exhibit.
An LTM Specialist is reviewing the virtual server configuration on an LTM device.
Which two actions should the LTM Specialist perform to minimize the virtual server configuration? (Choose two.)
- A. Remove the 'http' profile from the virtual server.
- B. Combine 'marketing_class' and 'default_class' into one class and update associations on the virtual server.
- C. Remove the 'default_class' from the virtual server.
- D. Combine 'acct_class' and 'marketing_class' into one class and update associations on the virtual server.
- E. Remove 'snat automap' from the virtual server.
Answer: C,D
NEW QUESTION 122
An LTM Specialist is customizing local traffic logging.
Which traffic management OS alert level provides the most detail?
- A. Alert
- B. Emergency
- C. Informational
- D. Notice
- E. Critical
Answer: C
NEW QUESTION 123
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?
- A. Accept-Ranges
- B. Range
- C. Expect
- D. Content-Length
Answer: D
NEW QUESTION 124
An HA pair of LTM devices configured in Active-Standby mode stops responding to traffic and causes an outage. The Active device becomes Standby, but the partner device stays in Standby mode instead of taking over as Active. A reboot and restart of the services brings the LTM device to Active mode for a short time, but then it goes into Standby mode again.
Which two configuration components caused this condition? (Choose two.)
- A. System Fail-safe
- B. Switch Board Failure
- C. Link down on Failover
- D. Gateway Fail-safe
- E. VLAN Fail-safe
Answer: D,E
NEW QUESTION 125
An LTM device is load balancing SIP traffic. An LTM Specialist notices that sometimes the SIP request is being load balanced to the same server as the initial connection.
Which setting in the UDP profile will make the LTM device more evenly distribute the SIP traffic?
- A. Set Timeout to Immediate
- B. Enable Datagram LB
- C. Set Timeout to Indefinite
- D. Disable Datagram LB
Answer: B
NEW QUESTION 126
An LTM device has a virtual server configured as a Performance Layer 4 virtual listening on 0.0.0.0:0 to perform routing of packets to an upstream router. The client machine at IP address 192.168.0.4 is attempting to contact a host upstream of the LTM device on IP address 10.0.0.99.
The network flow is asymmetrical, and the following TCP capture displays:
# tcpdump -nnni 0.0 'host 192.168.0.4 and host 10.0.0.99'
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on 0.0, link-type EN10MB (Ethernet), capture size 96 bytes
05:07:55.499954 IP 192.168.0.4.35345 > 10.0.0.99.443: S 3205656213:3205656213(0) ack 3267995082 win 1480
05:07:55.499983 IP 10.0.0.99.443 > 192.168.0.4.35345: R 1:1(0) ack 1 win 0
05:07:56.499960 IP 192.168.0.4.35345 > 10.0.0.99.443: S 3205656213:3205656213(0) ack 3267995082 win 1480
05:07:56.499990 IP 10.0.0.99.443 > 192.168.0.4.35345: R 1:1(0) ack 1 win 0
4 packets captured
Which option within the fastL4 profile needs to be enabled by the LTM Specialist to prevent the LTM device from rejecting the flow?
- A. Loose Close
- B. Generate Initial Sequence Number
- C. Reset on Timeout
- D. Loose Initiation
Answer: D
NEW QUESTION 127
-- Exhibit-
-- Exhibit --
Refer to the exhibit.
An LTM Specialist is reviewing the virtual server configuration on an LTM device.
Which two actions should the LTM Specialist perform to minimize the virtual server configuration? (Choose two.)
- A. Remove the 'http' profile from the virtual server.
- B. Combine 'marketing_class' and 'default_class' into one class and update associations on the virtual server.
- C. Remove the 'default_class' from the virtual server.
- D. Combine 'acct_class' and 'marketing_class' into one class and update associations on the virtual server.
- E. Remove 'snat automap' from the virtual server.
Answer: C,D
NEW QUESTION 128
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 /net show interface status
- B. tmsh show /net interface status
- C. tmsh /net show interface
- D. tmsh show /net interface
Answer: D
NEW QUESTION 129
Which command should an LTM Specialist use on the command line interface to show the health of RAID array hard drives?
- A. tmsh show /sys raid status
- B. tmsh show /sys raid disk
- C. tmsh show /ltm raid disk
- D. tmsh show /ltm disk status
Answer: B
NEW QUESTION 130
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. The SSL certificates on the LTM devices do NOT match.
- B. SNAT automap was NOT enabled for the HTTPS virtual servers.
- C. Connection mirroring was NOT enabled for the HTTPS virtual servers.
- D. Connection mirroring is incompatible with clientssl profiles.
Answer: D
NEW QUESTION 131
-- Exhibit -
-- Exhibit --
Refer to the exhibit.
An LTM Specialist is troubleshooting an issue with a new virtual server. When connecting through the virtual server, clients receive the message "The connection was reset" in the browser. Connections directly to the pool member show the application is functioning correctly.
What is the issue?
- A. The virtual server is configured with the incorrect SNAT address.
- B. The pool member is failing the monitor check.
- C. The virtual server is processing encrypted traffic as plain-text HTTP.
- D. The pool member default gateway is set incorrectly.
Answer: C
NEW QUESTION 132
An LTM device is monitoring pool members on port 80. The LTM device is using an HTTP monitor with a send string of GET / and a blank receive string.
What would cause the pool members to be marked down?
- A. A pool member responds with an HTTP 300 series response code.
- B. A pool member responds with an HTTP 500 series response code.
- C. A pool member responds with an HTTP 200 series response code.
- D. A pool member responds with an HTTP 400 series response code.
- E. A pool member does NOT acknowledge the connection SYN on port 80.
Answer: E
NEW QUESTION 133
-- Exhibit -
-- Exhibit --
Refer to the exhibit.
A server administrator notices that one server is intermittently NOT being sent any HTTP requests. The server logs display no issues. The LTM Specialist notices log entries stating the node (172.16.20.1) status cycling between down and up. The pool associated with the virtual server (10.10.1.100) has a custom HTTP monitor applied.
Which tcpdump filter will help trace the monitor?
- A. tcpdump -i external port 80 and host 10.10.1.100
- B. tcpdump -i internal port 80 and host 172.16.1.31
- C. tcpdump -i internal port 80 and host 172.16.1.33
- D. tcpdump -i external port 80 and host 172.16.20.1
Answer: B
NEW QUESTION 134
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