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Last tested: 2019-12-02
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"...></b></td> <td width="15" align="center"><input..." Line: 64 Column: 92 - 52
"...ory"></td> <td width="40" style="font-size:13px;color:green">ISBN.D..." Line: 101 Column: 53 - 17
"...ght='150'> <td width='120'><a hre..." Line: 102 Column: 146 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 103 Column: 440 - 16
".../div></td> <td width='20'> ..." Line: 104 Column: 28 - 17
"...nbsp;</td> <td width='120'><a hre..." Line: 105 Column: 152 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 108 Column: 24 - 17
"...ght='150'> <td width='120'><a hre..." Line: 109 Column: 170 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 110 Column: 456 - 16
".../div></td> <td width='20'> ..." Line: 111 Column: 28 - 17
"...nbsp;</td> <td width='120'><a hre..." Line: 112 Column: 179 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 115 Column: 24 - 17
"...ght='150'> <td width='120'><a hre..." Line: 116 Column: 266 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 117 Column: 520 - 16
".../div></td> <td width='20'> ..." Line: 118 Column: 28 - 17
"...nbsp;</td> <td width='120'><a hre..." Line: 119 Column: 188 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 122 Column: 24 - 17
"...ght='150'> <td width='120'><a hre..." Line: 123 Column: 206 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 124 Column: 480 - 16
".../div></td> <td width='20'> ..." Line: 125 Column: 28 - 17
"...nbsp;</td> <td width='120'><a hre..." Line: 126 Column: 179 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 129 Column: 24 - 17
"...ght='150'> <td width='120'><a hre..." Line: 130 Column: 173 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 131 Column: 458 - 16
".../div></td> <td width='20'> ..." Line: 132 Column: 28 - 17
"...nbsp;</td> <td width='120'><a hre..." Line: 133 Column: 176 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 136 Column: 24 - 17
"...ght='150'> <td width='120'><a hre..." Line: 137 Column: 177 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 138 Column: 460 - 16
".../div></td> <td width='20'> ..." Line: 139 Column: 28 - 17
"...nbsp;</td> <td width='120'><a hre..." Line: 140 Column: 266 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 143 Column: 24 - 17
"...ght='150'> <td width='120'><a hre..." Line: 144 Column: 246 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 145 Column: 506 - 16
".../div></td> <td width='20'> ..." Line: 146 Column: 28 - 17
"...nbsp;</td> <td width='120'><a hre..." Line: 147 Column: 242 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 150 Column: 24 - 17
"...ght='150'> <td width='120'><a hre..." Line: 151 Column: 226 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 152 Column: 494 - 16
".../div></td> <td width='20'>..." Line: 153 Column: 28 - 17
"...nbsp;</td> <td width='120'><a hre..." Line: 154 Column: 251 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 157 Column: 24 - 17
"...ght='150'> <td width='120'><a hre..." Line: 158 Column: 228 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 159 Column: 494 - 16
".../div></td> <td width='20'> ..." Line: 160 Column: 28 - 17
"...nbsp;</td> <td width='120'><a hre..." Line: 161 Column: 237 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 164 Column: 24 - 17
"...ght='150'> <td width='120'><a hre..." Line: 165 Column: 216 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..." Line: 166 Column: 484 - 16
".../div></td> <td width='20'> ..." Line: 167 Column: 28 - 17
"...nbsp;</td> <td width='120'><a hre..." Line: 168 Column: 204 - 73
"...></a></td> <td width='370' style='font-size:13px; border-bottom:1px dashed green;'><a hre..."
The “align” attribute on the “td” element is obsolete. Use CSS instead.
Line: 54 Column: 47 - 32
"...:</b></td> <td width="15" align="center"><input..." Line: 56 Column: 28 - 32
"...Title</td> <td width="15" align="center"><input..." Line: 58 Column: 29 - 32
"...uthor</td> <td width="15" align="center"><input..." Line: 60 Column: 27 - 32
"...>ISBN</td> <td width="15" align="center"><input..." Line: 63 Column: 195 - 32
"...></b></td> <td width="15" align="center"><input..." Line: 196 Column: 5 - 23
"...</tr> <tr><td align="center"><table..." Line: 196 Column: 50 - 68
"...nter"><tr><td align="center"> <br> ..." Line: 202 Column: 33 - 98
"...></tr><tr><td align="center" style="padding-top:20px; padding-bottom:20px;"> <smal..."
"...:</b></td> <td width="15" align="center"><input..." Line: 56 Column: 28 - 32
"...Title</td> <td width="15" align="center"><input..." Line: 58 Column: 29 - 32
"...uthor</td> <td width="15" align="center"><input..." Line: 60 Column: 27 - 32
"...>ISBN</td> <td width="15" align="center"><input..." Line: 63 Column: 195 - 32
"...></b></td> <td width="15" align="center"><input..." Line: 196 Column: 5 - 23
"...</tr> <tr><td align="center"><table..." Line: 196 Column: 50 - 68
"...nter"><tr><td align="center"> <br> ..." Line: 202 Column: 33 - 98
"...></tr><tr><td align="center" style="padding-top:20px; padding-bottom:20px;"> <smal..."
Duplicate ID “type”.
Line: 56 Column: 33 - 90
"...="center"><input type="radio" id="type" name="type" value="author" ></td> ..." Line: 58 Column: 33 - 88
"...="center"><input type="radio" id="type" name="type" value="isbn" ></td> ..."
"...="center"><input type="radio" id="type" name="type" value="author" ></td> ..." Line: 58 Column: 33 - 88
"...="center"><input type="radio" id="type" name="type" value="isbn" ></td> ..."
Attribute “height” not allowed on element “tr” at this point.
Line: 100 Column: 36 - 52
"...="center"><tr height='150'> <td ..." Line: 107 Column: 7 - 23
"...d> </tr><tr height='150'> <td ..." Line: 114 Column: 7 - 23
"...d> </tr><tr height='150'> <td ..." Line: 121 Column: 7 - 23
"...d> </tr><tr height='150'> <td ..." Line: 128 Column: 7 - 23
"...d> </tr><tr height='150'> <td ..." Line: 135 Column: 7 - 23
"...d> </tr><tr height='150'> <td ..." Line: 142 Column: 7 - 23
"...d> </tr><tr height='150'> <td ..." Line: 149 Column: 7 - 23
"...d> </tr><tr height='150'> <td ..." Line: 156 Column: 7 - 23
"...d> </tr><tr height='150'> <td ..." Line: 163 Column: 7 - 23
"...d> </tr><tr height='150'> <td ..."
"...="center"><tr height='150'> <td ..." Line: 107 Column: 7 - 23
"...d> </tr><tr height='150'> <td ..." Line: 114 Column: 7 - 23
"...d> </tr><tr height='150'> <td ..." Line: 121 Column: 7 - 23
"...d> </tr><tr height='150'> <td ..." Line: 128 Column: 7 - 23
"...d> </tr><tr height='150'> <td ..." Line: 135 Column: 7 - 23
"...d> </tr><tr height='150'> <td ..." Line: 142 Column: 7 - 23
"...d> </tr><tr height='150'> <td ..." Line: 149 Column: 7 - 23
"...d> </tr><tr height='150'> <td ..." Line: 156 Column: 7 - 23
"...d> </tr><tr height='150'> <td ..." Line: 163 Column: 7 - 23
"...d> </tr><tr height='150'> <td ..."
Element “g:plusone” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Line: 198 Column: 19 - 43
"...ss="soc1"><g:plusone size="medium"></g:pl..."
"...ss="soc1"><g:plusone size="medium"></g:pl..."
Element “fb:like” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)
Line: 200 Column: 175 - 284
"...</script><fb:like href="" send="false" layout="button_count" width="450" show_faces="true" action="like" font="tahoma"></fb:li..."
"...</script><fb:like href="" send="false" layout="button_count" width="450" show_faces="true" action="like" font="tahoma"></fb:li..."
Stray end tag “div”.
Line: 205 Column: 1 - 6
"...d</b><br> </div> <a hr..."
"...d</b><br> </div> <a hr..."
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
Line: 217 Column: 82 - 119
"...RSS feed"><img src="/images/rss.png" border="0"></a> <..."
"...RSS feed"><img src="/images/rss.png" border="0"></a> <..."
Warnings
The first occurrence of ID “type” was here.
Line: 54 Column: 33 - 89
"...="center"><input type="radio" id="type" name="type" value="title" ></td> ..." Line: 54 Column: 33 - 89
"...="center"><input type="radio" id="type" name="type" value="title" ></td> ..."
"...="center"><input type="radio" id="type" name="type" value="title" ></td> ..." Line: 54 Column: 33 - 89
"...="center"><input type="radio" id="type" name="type" value="title" ></td> ..."
The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.
Line: 79 Column: 52 - 154
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"... First C'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Head First C'></a></..." Line: 83 Column: 90 - 230
"... Edition'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Professional JavaScript for Web Developers, 3rd Edition'></a></..." Line: 85 Column: 70 - 190
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"...vaScript'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Head First JavaScript'></a></..." Line: 91 Column: 56 - 162
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"... Edition'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Head First C#, 2nd Edition'></a></..." Line: 95 Column: 75 - 200
"... Edition'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Head First Servlets and JSP, 2nd Edition'></a></..." Line: 97 Column: 50 - 150
"...rst Ajax'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Head First Ajax'></a></..." Line: 177 Column: 47 - 137
"...e='Nginx'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Nginx'></a></..." Line: 179 Column: 49 - 141
"...'PHP CLI'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='PHP CLI'></a></..." Line: 181 Column: 55 - 153
"...ws To Go'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Windows To Go'></a></..." Line: 183 Column: 58 - 159
"...amentals'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='VFX Fundamentals'></a></..." Line: 185 Column: 87 - 217
"...ngularJS'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Material Design implementation with AngularJS'></a></..." Line: 187 Column: 61 - 165
"...nologies'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Beacon Technologies'></a></..." Line: 189 Column: 67 - 177
"...Projects'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Raspberry Pi IoT Projects'></a></..." Line: 191 Column: 58 - 159
"... Arduino'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Junk Box Arduino'></a></..." Line: 193 Column: 56 - 155
"...cal Hive'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Practical Hive'></a></..." Line: 195 Column: 57 - 157
"...al D3.js'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Practical D3.js'></a></..." Line: 217 Column: 82 - 119
"...RSS feed"><img src="/images/rss.png" border="0"></a> <..."
"...t jQuery'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Head First jQuery'></a></..." Line: 81 Column: 47 - 144
"... First C'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Head First C'></a></..." Line: 83 Column: 90 - 230
"... Edition'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Professional JavaScript for Web Developers, 3rd Edition'></a></..." Line: 85 Column: 70 - 190
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"...bile Web'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Head First Mobile Web'></a></..." Line: 93 Column: 61 - 172
"... Edition'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Head First C#, 2nd Edition'></a></..." Line: 95 Column: 75 - 200
"... Edition'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Head First Servlets and JSP, 2nd Edition'></a></..." Line: 97 Column: 50 - 150
"...rst Ajax'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Head First Ajax'></a></..." Line: 177 Column: 47 - 137
"...e='Nginx'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Nginx'></a></..." Line: 179 Column: 49 - 141
"...'PHP CLI'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='PHP CLI'></a></..." Line: 181 Column: 55 - 153
"...ws To Go'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Windows To Go'></a></..." Line: 183 Column: 58 - 159
"...amentals'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='VFX Fundamentals'></a></..." Line: 185 Column: 87 - 217
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"...nologies'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Beacon Technologies'></a></..." Line: 189 Column: 67 - 177
"...Projects'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Raspberry Pi IoT Projects'></a></..." Line: 191 Column: 58 - 159
"... Arduino'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Junk Box Arduino'></a></..." Line: 193 Column: 56 - 155
"...cal Hive'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Practical Hive'></a></..." Line: 195 Column: 57 - 157
"...al D3.js'><img src='/images/null.gif' width='180' height='216' border='0' class='border' alt='Practical D3.js'></a></..." Line: 217 Column: 82 - 119
"...RSS feed"><img src="/images/rss.png" border="0"></a> <..."
Element name “g:plusone” cannot be represented as XML 1.0.
Line: 198 Column: 19 - 43
"...ss="soc1"><g:plusone size="medium"></g:pl..."
"...ss="soc1"><g:plusone size="medium"></g:pl..."
Element name “fb:like” cannot be represented as XML 1.0.
Line: 200 Column: 175 - 284
"...</script><fb:like href="" send="false" layout="button_count" width="450" show_faces="true" action="like" font="tahoma"></fb:li..."
"...</script><fb:like href="" send="false" layout="button_count" width="450" show_faces="true" action="like" font="tahoma"></fb:li..."
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
Line: 1 Column: 1 - 6
"...<html> <head..."
"...<html> <head..."
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it-ebooks.info Ping
Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.
it-ebooks.info TRACEROUTE
Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.