The following decoded tcpdump capture shows the trace of a failing health monitor. ``` 00:00:13.245104 IP 10.29.29.60.51947 10.0.0.12.http: P 1:59(58) ack 1 win 46 out 0tcl/tmm3 0x0010: 0x00 000c caeb 0050 8be5 aca3 dd65 e3e1 ........P..... 0x0020: 002a 002a 1000 0000 0101 080a 94b4 5be2 ...*.*.......... 0x0030: 080a 94ad 8745 5420 4745 5420 2f65 7465 ..ET GET /etet 0x0040: 6765 2e68 746d 6c20 4854 5450 2f31 2e30 ge.html HTTP/1.0 0x0050: 0d0a 6874 7470 2d48 6f73 743a 2036 6374 ..http-Host: 6ct 0x0060: 696e 6e3a 62613 6566 7363 0d0a 0d0a 0105 inn:bafs .... 0x0070: 0100 0003 00 ... 00:00:13.245284 IP 10.0.0.12.http 10.29.29.60.51947: . ack 59 win 362 in 0tcl/tmm3 0x0010: 0x00 000c 4500 00c9 6f68 4000 4006 755d ....E..oh@.@.u] 0x0020: 0a29 0010 0a2a 0010 0800 0e06 4906 9e90 .)..)..I.. 0x0030: 080a 94b4 5be2 080a 94ad 8745 5420 ....E.T 0x0040: 0150 4854 5450 2f31 2e31 2042 6164 2052 .P HTTP/1.1 Bad R 0x0050: 6571 7565 7374 0d0a 436f 6e74 656e 742d equest. Content- 0x0060: 5479 7065 3a20 7465 7874 2f68 746d 6c2d Type: text/html- 0x0070: 6368 6172 7365 743d 6973 6f2d 3838 3539 charset=iso-8859 0x0080: 2d31 0d0a 436f 6e6e 6563 7469 6f6e 3a20 -1. Connection: 0x0090: 636c 6f73 650d 0a43 6f6e 7465 6e74 2d4c close.Content-L 0x00a0: 656e 6774 683a 2030 0d0a 0d0a 3133 3432 ength: 0..1342 0x00b0: 3639 3638 3537 3634 3337 3438 0d0a 0d0a 696c 6567 616c 2052 6571 7565 7374 2053 4552 illegal Request SER 0x00c0: 5645 5220 4953 2055 500d 0a56 616c 6964 VER IS UP.Valid 0x00d0: 6174 696f 6e20 4661 696c 6564 3064 0a0d ation Failed0d.. ``` The health monitor is sending the string shown in the capture; however, the server response is NOT as expected. The correct response should be an HTML page including the string 'SERVER IS UP'. What is the issue?

Question

The following decoded tcpdump capture shows the trace of a failing health monitor. ``` 00:00:13.245104 IP 10.29.29.60.51947 > 10.0.0.12.http: P 1:59(58) ack 1 win 46 out 0tcl/tmm3 0x0010: 0x00 000c caeb 0050 8be5 aca3 dd65 e3e1 ........P..... 0x0020: 002a 002a 1000 0000 0101 080a 94b4 5be2 ...*.*.......... 0x0030: 080a 94ad 8745 5420 4745 5420 2f65 7465 ..ET GET /etet 0x0040: 6765 2e68 746d 6c20 4854 5450 2f31 2e30 ge.html HTTP/1.0 0x0050: 0d0a 6874 7470 2d48 6f73 743a 2036 6374 ..http-Host: 6ct 0x0060: 696e 6e3a 62613 6566 7363 0d0a 0d0a 0105 inn:bafs .... 0x0070: 0100 0003 00 ... 00:00:13.245284 IP 10.0.0.12.http > 10.29.29.60.51947: . ack 59 win 362 in 0tcl/tmm3 0x0010: 0x00 000c 4500 00c9 6f68 4000 4006 755d ....E..oh@.@.u] 0x0020: 0a29 0010 0a2a 0010 0800 0e06 4906 9e90 .)..)..I.. 0x0030: 080a 94b4 5be2 080a 94ad 8745 5420 ....E.T 0x0040: 0150 4854 5450 2f31 2e31 2042 6164 2052 .P HTTP/1.1 Bad R 0x0050: 6571 7565 7374 0d0a 436f 6e74 656e 742d equest. Content- 0x0060: 5479 7065 3a20 7465 7874 2f68 746d 6c2d Type: text/html- 0x0070: 6368 6172 7365 743d 6973 6f2d 3838 3539 charset=iso-8859 0x0080: 2d31 0d0a 436f 6e6e 6563 7469 6f6e 3a20 -1. Connection: 0x0090: 636c 6f73 650d 0a43 6f6e 7465 6e74 2d4c close.Content-L 0x00a0: 656e 6774 683a 2030 0d0a 0d0a 3133 3432 ength: 0..1342 0x00b0: 3639 3638 3537 3634 3337 3438 0d0a 0d0a 696c 6567 616c 2052 6571 7565 7374 2053 4552 illegal Request SER 0x00c0: 5645 5220 4953 2055 500d 0a56 616c 6964 VER IS UP.Valid 0x00d0: 6174 696f 6e20 4661 696c 6564 3064 0a0d ation Failed0d.. ``` The health monitor is sending the string shown in the capture; however, the server response is NOT as expected. The correct response should be an HTML page including the string 'SERVER IS UP'. What is the issue?

Accepted Answer

D. The 'GET /etetge.html' request does not match the actual page location.

Answer

A. The /test_page.html does NOT exist on the web server.

Answer

B. The server is configured to require authentication.

Answer

C. The monitor is sending an HTTP/1.0 request and the server expects HTTP/1.1.

301B Question #38: Real Exam Question with Answer & Explanation

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