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BIG-IP Local Traffic Manager (LTM) Specialist: Maintain & Troubleshoot Questions 51–55 (page: 12)

Updated On: 9-Feb-2026
Page 12 of 43
PDF with 210 Questions

An LTM Specialist has configured a virtual server for www.example.com, load balancing connections to a pool of application servers that provide a shopping cart application. Cookie persistence is enabled on the virtual server. Users are able to connect to the application, but the user's shopping cart fails to update. A traffic capture shows the following:
Request:
GET /cart/updatecart.php HTTP/1.1
Host: www.example.com
Connection: keep-alive
Cache-Control: max-age=0
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_5) AppleWebKit/537.4 (KHTML, like Gecko) Chrome/22.0.1229.94 Safari/537.4
Accept: text/html, application/xhtml+xml, application/xml;q=0.9, */*;q=0.8
Accept-EncodinG. gzip, deflate, sdch
Accept-LanguagE. en-US, en;q=0.8
Accept-Charset: ISO-8859-1, utf-8;q=0.7, *;q=0.3
CookiE. BIGipServerwebstore_pool=353636524.20480.0000
Response:
HTTP/1.1 200 OK
DatE. Wed, 24 Oct 2012 18:00:13 GMT
Server: Apache/2.2.22 (Ubuntu)
X-Powered-By: PHP/5.3.10-1ubuntu3.1
Set-CookiE. cartID=647A5EA6657828C69DB8188981CB5; path=/; domain=wb01.example.com
Keep-AlivE. timeout=5, max=100
Connection: Keep-Alive
Content-TypE. text/html
No changes can be made to the application.
What should the LTM Specialist do to resolve the problem?

  1. Use an iRule to rewrite the cartID cookie domain.
  2. Create a universal persistence profile on the cartID cookie.
  3. Enable source address persistence as a fallback persistence method.
  4. Create a cookie persistence profile with "match across services" enabled.

Answer(s): A



An LTM Specialist has been asked to configure a virtual server to distribute connections between a pool of two application servers with addresses 172.16.20.1 and 172.16.20.2. The application servers are listening on TCP ports 80 and 443. The application administrators have asked that clients be directed to the same node for both HTTP and HTTPS requests within the same session.
Virtual servers vs_http and vs_https have been created, listening on 1.2.3.100:80 and
1.2.3.100:443, respectively.
Which configuration option will result in the desired behavior?

  1. Create pool app_pool with members 172.16.20.1:any and 172.16.20.2:any Assign app_pool as the default pool for both vs_http and vs_https Disable port translation for vs_http and vs_https
  2. Create pool http_pool with members 172.16.20.1:80 and 172.16.20.2:80 Assign pool http_pool as the default pool for both vs_https and vs_https Disable port translation for vs_https
    Create an SSL persistence profile with "match across virtual servers" enabled Assign the persistence profile to vs_http.
  3. Create pool http_pool with members 172.16.20.1:80 and 172.16.20.2:80 Create pool https_pool with members 172.16.20.1:443 and 172.16.20.2:443 Assign http_pool as the default pool for vs_http
    Assign https_pool as the default pool for vs_https
    Create a source address persistence profile with "match across services" enabled Assign the persistence profile to vs_http and vs_https
  4. Create pool http_pool with members 172.16.20.1:80 and 172.16.20.2:80 Create pool https_pool with members 172.16.20.1:443 and 172.16.20.2:443 Assign http_pool as the default pool for vs_http
    Assign https_pool as the default pool for vs_https
    Create an SSL persistence profile with "match across virtual servers" enabled Assign the persistence profile to vs_http

Answer(s): C



An LTM Specialist is investigating reports from users that SSH connections are being terminated unexpectedly. SSH connections are load balanced through a virtual server. The users experiencing this problem are running SQL queries that take upwards of 15 minutes to return with no screen output. The virtual server is standard with a pool associated and no other customizations.
What is causing the SSH connections to terminate?

  1. UDP IP ToS
  2. TCP idle timeout
  3. The virtual server has no persistence.
  4. The pool has Reselect Retries set to 0.

Answer(s): B



Users in a branch office are reporting a website is always slow. No other users are experiencing the problem. The LTM Specialist tests the website from the external VLAN along with testing the servers directly. All tests indicate normal behavior. The environment is a single HTTP virtual server on the external VLAN with a single pool containing three HTTP pool members on the internal VLAN.
Which two locations are most appropriate to collect additional protocol analyzer data? (Choose two.)

  1. a user's machine
  2. the switch local to the user
  3. the LTM device's internal VLAN
  4. the LTM device's external VLAN
  5. a user's Active Directory authentication

Answer(s): A,B



An LTM Specialist has a single HTTPS virtual server doing SSL termination. No server SSL profile is defined. The pool members are on the internal VLAN answering on HTTP port 80. Users with certain browsers are experiencing issues.
Which two locations are most appropriate to gather packets needed to determine the SSL issue? (Choose two.)

  1. server interface
  2. user's computer
  3. LTM device's external VLAN
  4. LTM device's internal VLAN
  5. LTM device's management interface

Answer(s): B,C



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