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 device 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
}
}
}
What issue is the LTM Specialist experiencing?
A. The virtual server is disabled on all VLANs.
B. The pool member is marked down by a monitor.
C. The pool member is marked down administratively.
D. The virtual server is configured for the incorrect protocol.
An LTM Specialist is troubleshooting an HTTP monitor. The pool member is accessible directly through a browser, but the HTTP monitor is marking the pool member as down.
GET / HTTP/1.1
HTTP/1.1 400 Bad Request DatE. Tue, 23 Oct 2012 21:39:07 GTM Server: Apache/2.2.22 (FreeBSD) PHP/5.4.4 mod_ssl/2.2.22 OpenSSL/0.9.8q DAV/2 Content-LengtH. 226 Connection: close Content-TypE. text/html; charset=iso-8859-1
Which issue is the pool member having?
A. The pool member has too many concurrent connections.
B. The pool member is rejecting the request because it is invalid.
C. The pool member lacks the object requested by the monitor.
D. The pool member is NOT accepting requests from the LTM device IP address.
The LTM device is configured to provide load balancing to a set of web servers that implement access control lists (ACL) based on the source IP address of the client. The ACL is at the network level and the web server is configured to send a TCP reset back to the client if it is NOT permitted to connect.
The virtual server is configured with the default OneConnect profile.
The ACL is defined on the web server as:
Permit: 192.168.136.0/24 Deny: 192.168.116.0/24
The packet capture is taken of two individual client flows to a virtual server with IP address 192.168.136.100.
Client A - Src IP 192.168.136.1 - Virtual Server 192.168.136.100:
Clientside:
09:35:11.073623 IP 192.168.136.1.55684 > 192.168.136.100.80: S 869998901:869998901(0) win 8192
Serverside:
09:35:11.081022 IP 192.168.136.1.55684 > 192.168.116.128.80: S 685865802:685865802(0) win 4380
Client B - Src IP 192.168.116.1 - Virtual Server 192.168.136.100:
Clientside:
09:36:11.244040 IP 192.168.116.1.55769 > 192.168.136.100.80: S 3320618938:3320618938(0) win 8192
Serverside:
09:36:11.245940 IP 192.168.136.1.55684 > 192.168.116.128.80: P 599:897(298) ack 4525 win 8904 09:36:11.247847 IP 192.168.116.128.80 > 192.168.136.1.55684: P 4525:5001(476) ack 897 win 142
Why was the second client flow permitted by the web server?
A. A global SNAT is defined.
B. SNAT automap was enabled on the virtual server.
C. The idle TCP session from the first client was re-used.
D. A source address persistence profile is assigned to the virtual server.
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 username and password are incorrect.
B. The server has an incorrect date configured.
C. The client is using the wrong type of browser.
D. The wrong authentication mechanism is being used.
A web developer has created a custom HTTP call to a backend application. The HTTP headers being sent by the HTTP call are:
GET / HTTP/1.1 User-Agent: MyCustomApp (v1.0) Accept: text/html Cache-Control: no-cache Connection: keep-alive CookiE. somecookie=1
The backend server is responding with the following:
HTTP/1.1 400 Bad Request DatE. Wed, 20 Jul 2012 17:22:41 GMT Connection: close
Why is the HTTP web server responding with a HTTP 400 Bad Request?
A. The client request does NOT include a Host header.
B. The User-Agent header contains an invalid character.
C. The web server is NOT expecting a keep-alive connection.
D. The web server is configured to accept HTTP 1.0 requests only.
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. From
C. Trailer
D. Expect
A web application sends information about message integrity and content life time to the client. Which two HTTP headers should be used in sending the client information? (Choose two.)
A. ETag
B. Expect
C. Expires
D. Content-MD5
E. Content-Range
F. Content-Length
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. Range
B. Expect
C. Accept-Ranges
D. Content-Length
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. Accept
B. Accept-Encoding
C. Accept-Language
D. Host
E. User-Agent
A web application requires the client to provide the destination server and service identification. Which HTTP header will supply this information?
A. Host
B. From
C. Expect
D. Connection
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