data communications and networking 5th edition
Data communications and Networking
... discussed: data communications, networking, protocols and standards, and networking models. Networks exist so that data may be sent from one place to another-the basic con- cept of data communications. To fully ... Chapter 1 and Chapter 2. Chapter 1 In Chapter 1, we introduce the concepts of data communications and networking. We dis- cuss data communications components, data representation, and data flow. We then ... hardware and software com- ponents of data communications and networking. Although the term "network model" suggests a relationship to networking, the model also encompasses data communications. Chapters This...
Ngày tải lên: 28/02/2014, 17:08
business data communications and networking a research perspective
... ECL SCIV dataset, consisting of over 1,110 skin-color images of more than 1,110 people, which resulted from vi Research in the area of data communications and networking is well and alive ... International Journal of Business Data Communications and Networking (http://www.idea-group.com/ijbdcn). The chapters are divided in four themes: (1) network design and application issues, (2) mobility, ... interesting research activities taking place in the eld of business data communications and networking. The rst section, Network Design and Application Issues, starts with Chapter I, “Design of High...
Ngày tải lên: 01/06/2014, 01:19
Data Access and Networking
... ■ DATA ACCESS AND NETWORKING 147 < ;data: DataGrid x:Name="grdData" Margin="15" AutoGenerateColumns="False"> < ;data: DataGrid.Columns> < ;data: DataGridTemplateColumn ... “Silverlight-enabled WCF Service” and name it StartingHandService.svc, as shown in Figure 6-4. Then click the Add button. CHAPTER 6 ■ DATA ACCESS AND NETWORKING 149 EventHandler<GetHandsCompletedEventArgs>(service_GetHandsCompleted); ... public static List<StartingHands> GetHands() { List<StartingHands> hands = new List<StartingHands>(); hands.Add( new StartingHands() { Nickname = "Big...
Ngày tải lên: 05/10/2013, 03:20
Cryptography and network security principles and practice, 5th edition
Ngày tải lên: 07/12/2013, 11:53
Tài liệu Communications and Networking doc
... channels, and can be encountered in most of multicarrier systems. In summary, this book covers a wide range of interesting topics of communications and networking. The introductions, data, and ... sub-carriers and can be considered to be guard bands that avoid interference from other applications in adjacent bands and are not employed to deliver any information. It should be noted that x n and ... references in this book would help the readers know more about communications and networking and help them explore this exciting and fact-evolving fi eld. Editor Jun Peng University of Texas...
Ngày tải lên: 22/02/2014, 05:20
distributed systems concepts and design 5th edition
... repeaters and network interfaces; and software components, including protocol stacks, communication handlers and drivers. The resulting functionality and performance available to distributed system and ... devices Database server Application logic Database manager Tier 1 Tier 2 Tier 3 a) data manipulation Application and data management User view, controls and data manipulation 54 CHAPTER 2 SYSTEM ... including the encoding and decoding of parameters and results, the passing of messages and the preserving of the required semantics for the procedure call. This approach directly and elegantly supports...
Ngày tải lên: 27/03/2014, 23:12
DNS and BIND 5th Edition_3 doc
... your data the first time and then maintain your DNS data manually. Or, you can use h2n over and over again. As you have seen, the format of the host table is much simpler to understand and to ... cache the data. After the time to live expires, the name server must discard the cached data and get new data from the authoritative name servers. This also applies to negatively cached data; a ... primary master name server. Let's go back and revisit the DNS database files; there are shortcuts we didn't use. Unless you see and understand the long form first, though, the short form...
Ngày tải lên: 18/06/2014, 15:20
DNS and BIND 5th Edition_4 doc
... standard. The code is based on DNS 4.9.3, so it understands the domain, search, nameserver, options, and sortlist directives; AIX supports up to three nameserver directives. AIX versions 4 and ... for the hosts database. 6.4.3 HP's HP−UX HP's resolver implementation is basically straight DNS; the HP−UX 8.0 and 9.0 resolvers are based on DNS 4.8.3, and support the standard domain, ... name server pulling the zone data starts a child process, and the name server providing the zone data may start a child process. We'll digress a little here and explain why child processes...
Ngày tải lên: 18/06/2014, 15:20
DNS and BIND 5th Edition_5 docx
... and one for TCP), and one for opening zone data files. If that's more than the limit your operating system places on processes, BIND won't be able to get any more file descriptors and ... for data in the movie.edu and two in−addr.arpa zones. Why? Because most of the hosts querying the name server are on the two networks it's connected to, 192.249.249 and 192.253.253. And ... message about the zone data: Jan 10 20:48:38 terminator named[3221]: terminator2 has CNAME and other data (invalid) This message means that there's a problem with your zone data. For example,...
Ngày tải lên: 18/06/2014, 15:20
DNS and BIND 5th Edition_6 ppt
... command−line program nsupdate, which is part of the standard BIND distribution. nsupdate reads one−line commands that it then translates into an update message. Commands can be specified on standard ... operate efficiently, and it may even panic or exit. Unless your name server handles an extremely large amount of data, you won't run into this limit. But if you do, BIND 4.9 and 8 have configuration ... host or network cannot handle ten active zone transfers, you should decrease this number. If you run a server supporting hundreds or thousands of zones, and your host and network can support...
Ngày tải lên: 18/06/2014, 15:20
DNS and BIND 5th Edition_7 pdf
... already in its database of authoritative data and cache data, it answers with this information; this part of the operation hasn't changed. However, if the information is not in its database, ... question in a DNS packet; it includes the name and the requested data type and class. There is never more than one question in a DNS packet. The capability of handling more than one question in a DNS ... The data are divided into the following basic areas: starting up, updating the database, processing queries, and maintaining zones. We won't cover updating the name server's internal database...
Ngày tải lên: 18/06/2014, 15:20
DNS and BIND 5th Edition_8 doc
... server's internal database − including cached information − can also help you track down problems. The INT signal causes named to dump its authoritative data, cache data, and hints data to named_dump.db ... it last loaded the data, and read the file. About the best you can do is to use nslookup to compare the data returned by the primary and by a slave. If they return different data, you probably ... process. The status of 1 indicates that the zone data was successfully transferred. The old zone data is purged (time 00:14:02.094), and the new data is loaded. The next maintenance (see time 00:14:30.058)...
Ngày tải lên: 18/06/2014, 15:20
DNS and BIND 5th Edition_9 doc
... and quit */ } /* * Initialize a handle to this response. The handle will * be used later to extract information from the response. */ if (ns_initparse(response.buf, responseLen, &handle) ... buffer handle A pointer to a data structure filled in by ns_init_parse ns_init_parse returns zero on success and −1 when it fails to parse the response buffer. const u_char *ns_msg_base(ns_msg handle) const ... *ns_msg_end(ns_msg handle) int ns_msg_size(ns_msg handle) These routines return a pointer to the start of the response, a pointer to the end of the response, and the size of the response. They are returning data...
Ngày tải lên: 18/06/2014, 15:20
DNS and BIND 5th Edition_10 potx
... [class] type RDATA [class] [TTL] type RDATA The RR begins with optional TTL and class fields, followed by a type and RDATA field appropriate to the type and class. Class and type use the standard mnemonics; ... would expect from Microsoft, and provides a handy hook into WINS: you can configure the server to query a WINS server for address data if it doesn't find the data in a DNS zone. This is done ... Information HINFO stands for Host INFOrmation. The data are a pair of strings identifying the host's hardware type and operating system. The strings should come from the MACHINE NAMES and OPERATING...
Ngày tải lên: 18/06/2014, 15:20
