301b Exam Question 141

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?
  • 301b Exam Question 142

    An LTM HTTP pool has an associated monitor that sends a string equal to 'GET /test.html'.
    Which two configurations could an LTM Specialist implement to allow server administrators to disable their pool member servers without logging into the LTM device? (Choose two.)
  • 301b Exam Question 143

    An LTM Specialist needs to rewrite text within an HTML response from a web server. A client is sending the HTTP request below:
    GET / HTTP/1.1
    Host: www.f5.com
    User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:16.0) Gecko/20100101 Firefox/16.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-LanguagE. en-US,en;q=0.5
    Accept-EncodinG. gzip, deflate
    Cache-Control: no-cache
    Connection: keep-alive
    CookiE. somecookie=1
    Although a stream profile has been added to the virtual server, the content within the HTTP response is NOT being matched, and therefore NOT modified.
    Which HTTP header should the LTM Specialist remove from the request to ensure the content can be matched and modified?
  • 301b Exam Question 144

    -- Exhibit -

    -- Exhibit --
    Refer to the exhibit.
    An LTM Specialist is troubleshooting a virtual server. Both the virtual server and the pool are showing blue squares for their statuses, and new clients report receiving "The connection was reset" through their browsers. Connections directly to the pool member are successful.
    What is the issue?
  • 301b Exam Question 145

    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 networklevel 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 <mss 1460,nop,wscale 2,nop,nop,sackOK>
    09:35:11.073931 IP 192.168.136.100.80 > 192.168.136.1.55684: S 2273668949:2273668949(0) ack 869998902 win 4380 <mss 1460,nop,wscale 0,sackOK,eol>
    09:35:11.074928 IP 192.168.136.1.55684 > 192.168.136.100.80: . ack 1 win 16425
    09:35:11.080936 IP 192.168.136.1.55684 > 192.168.136.100.80: P 1:299(298) ack 1 win 16425 09:35:11.081029 IP 192.168.136.100.80 > 192.168.136.1.55684: . ack 299 win 4678
    Serverside:
    09:35:11.081022 IP 192.168.136.1.55684 > 192.168.116.128.80: S 685865802:685865802(0) win 4380 <mss 1460,nop,wscale 0,sackOK,eol>
    09:35:11.081928 IP 192.168.116.128.80 > 192.168.136.1.55684: S 4193259095:4193259095(0) ack 685865803 win 5840 <mss 1460,nop,nop,sackOK,nop,wscale 6>
    09:35:11.081943 IP 192.168.136.1.55684 > 192.168.116.128.80: . ack 1 win 4380
    09:35:11.081955 IP 192.168.136.1.55684 > 192.168.116.128.80: P 1:299(298) ack 1 win 4380
    09:35:11.083765 IP 192.168.116.128.80 > 192.168.136.1.55684: . ack 299 win 108
    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 <mss 1460,nop,wscale 2,nop,nop,sackOK>
    09:36:11.244152 IP 192.168.136.100.80 > 192.168.116.1.55769: S 3878120666:3878120666(0) ack 3320618939 win 4380 <mss 1460,nop,wscale 0,sackOK,eol>
    09:36:11.244839 IP 192.168.116.1.55769 > 192.168.136.100.80: . ack 1 win 16425
    09:36:11.245830 IP 192.168.116.1.55769 > 192.168.136.100.80: P 1:299(298) ack 1 win 16425
    09:36:11.245922 IP 192.168.136.100.80 > 192.168.116.1.55769: . ack 299 win 4678
    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?