F5 301b 問題集

質問 1：
Windows PC clients are connecting to a virtual server over a high-speed, low-latency network with no packet loss.
Which built-in client-side TCP profile provides the highest throughput for HTTP downloads?
A. tcp-legacy
B. tcp-lan-optimized
C. tcp-wan-optimized
D. tcp
正解：B

質問 2：
Which command line interface command will check if the BIG-IP platform contains a packet velocity ASIC (PVA)?
A. bigpipe platform show | grep -i pva
B. tmsh show /ltm hardware | grep -i pva
C. tmsh show /sys hardware pva status
D. tmsh show /sys hardware | grep -i pva
正解：D

質問 3：
-- 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 'time-until-up' setting on the monitor is incorrect.
B. The server is marking the connection as closed.
C. The monitor request is NOT returning the page body.
D. The pool member is rejecting the monitor request.
正解：C

質問 4：
-- Exhibit-

-- Exhibit --
Refer to the exhibit.
A user is unable to access an HTTP application via a virtual server.
What is the cause of the failure?
A. The host header requires a host name.
B. The Connection: Keep-Alive header is set.
C. There is no pool member available to service the request.
D. The virtual server is in the disabled state.
正解：C

質問 5：
An LTM Specialist notices the following error on the stdout console:
mcpd[2395]: 01070608:0: License is not operational(expired or digital signature does not match contents)
Which command should be executed to verify the LTM device license?
A. bigpipe version
B. tmsh show /sys license
C. tmsh /util bigpipe version
D. tmsh show /sys license status
正解：B

質問 6：
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. ETag
B. Expect
C. From
D. Trailer
正解：D

質問 7：
-- 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. license the device for AVR
D. reboot the device
正解：A

質問 8：
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. Add a valid username and password to the monitor.
C. Add an NTLM profile to the virtual server.
D. Use an HTTPS monitor with a valid certificate instead.
正解：B

質問 9：
-- 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. The LTM device drops the connection.
B. The LTM device performs a Network Address Translation (NAT).
C. The LTM device performs a Port Address Translation (PAT).
D. Port 1990 is a well-known port, so its use is restricted.
E. 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
正解：C