the responsibilities of data link layer

... Trang 1The Data Link LayerChapter 3 Trang 2Data Link Layer Design Issues• Services Provided to the Network Layer • Framing • Error Control • Flow Control Trang 3Functions of the Data Link Layer• ... Data Link Protocols• HDLC – High-Level Data Link Control • The Data Link Layer in the Internet Trang 41High-Level Data Link ControlFrame format for bit-oriented protocols Trang 42High-Level Data ... bytes (b) Four examples of byte sequences before and after stuffing Trang 9Framing (3)Bit stuffing (a) The original data (b) The data as they appear on the line (c) The data as they are stored in

Ngày tải lên: 21/12/2017, 11:48

... 3Functions of the Data Link Layer• Provide service interface to the network layer • Dealing with transmission errors • Regulating data flow SinhVienZone.Com Trang 4Functions of the Data Link Layer ... (2)SinhVienZone.Com Trang 40Example Data Link Protocols• HDLC – High-Level Data Link Control • The Data Link Layer in the Internet SinhVienZone.Com Trang 41High-Level Data Link ControlFrame format for ... examples of byte sequences before and after stuffing. SinhVienZone.Com Trang 9Framing (3)Bit stuffing (a) The original data. (b) The data as they appear on the line. (c) The data as they are

Ngày tải lên: 30/01/2020, 23:02

... Trang 1The Data Link LayerChapter 3 Trang 2Data Link Layer Design Issues• Services Provided to the Network Layer • Framing • Error Control • Flow Control Trang 3Functions of the Data Link Layer• ... 39Petri Net Models (2)Trang 40Example Data Link Protocols• HDLC – High-Level Data Link Control • The Data Link Layer in the Internet Trang 41High-Level Data Link ControlFrame format for bit-oriented ... (b) Four examples of byte sequences before and after stuffing. Trang 9Framing (3)Bit stuffing (a) The original data. (b) The data as they appear on the line. (c) The data as they are stored in

Ngày tải lên: 14/12/2021, 07:14

... Trang 1A note on the use of these ppt slides:We’re making these slides freely available to all (faculty, students, readers) They’re in powerpoint form so you can add, ... one) and slide content to suit your needs They obviously represent a lot of work on our part In return for use, we only ask the following: ‰ If you use these slides (e.g., in a class) in substantially ... mạng cần cân nhắc các yếu tố: Trang 8Truyền thông giữa các bộ thích ứng mạngframe datagram rcving node link layer protocol sending node frame adapter adapter  thêm thông tin điều khiển và kiểm

Ngày tải lên: 23/10/2014, 21:01

... objectives 11 3.1. The question of the thesis 11 [...]... objectives 3.1 The question of the thesis To assess the level of satisfaction of the statistics and services of GSO what ... practices of data dissemination, I chose the topic of my thesis: “Evaluation on the satisfaction of GSO's statisticians on the quality of data dissemination on the GSO's website”. The ... completed the thesis "Evaluation on the satisfaction of GSO's statisticians on the quality of data dissemination on the GSO's website " Then, I would like to thank the leaders of

Ngày tải lên: 20/07/2015, 21:04

... field in the data-link trailer This field contains a value that is the result of a mathematical formula applied to the data in the Trang 11Data Link Function 4: Identifying the Encapsulated Data ... Typical LAN Features for OSI Layer 1  The OSI physical layer, or Layer 1, defines the details of how to move data from one device to another  The OSI physical layer defines the standards used to send ... Typical LAN Features for OSI Layer 2 Trang 5Data Link Function 1: Arbitration The specifications for these data-link protocols define how to arbitrate the use of the physical medium to avoid

Ngày tải lên: 12/08/2015, 09:13

... ALGORITHM The local gradient  j  n  for hidden neuron j is equal to the product of the weighted sum of the  k  n  s computed for the neurons in the layer to the immediate right of that neuron ... 60% of the root mean square errors (RMSE) in the model error time series, while the multilayer perceptron performs slightly better. viii To extend the updating ability to the remainder of the ... ON THE APPLICATION OF DATA ASSIMILATION IN THE SINGAPORE REGIONAL MODEL SUN YABIN (M.Sc., TJU) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF CIVIL ENGINEERING

Ngày tải lên: 11/09/2015, 10:15

... 3-1. The research model The data model refers to the data model structure, the operations and any constraints on the operations. It affects the way a user views and manipulates the data in the database. The ... separating the effect of. .. separating the effect of the data model from the effect of the query language The second and the third sections review the existing ... of the query language, e.g. the keywords, and order of the operations and statements. By measuring user performance of stage 1 and stage 2, we can determine the impact of the data model and the

Ngày tải lên: 28/09/2015, 13:21

... Determine the link efficiency for the following type of data link if the velocity of propagation is 2.108 m/s and the bit error rates of the links are all negligibly low: 3 2 Trang 33Example of link ... max window Trang 424 2Trang 43 Data Link Control Protocols  The data link control layer is concerned with the transfer of dataover a serial data link The link can be:  point‐to‐point physical ...  responsibilities of the data link The most important layer are flow control and error control Collectively, these functions are known as data link control. procedures used to restrict the

Ngày tải lên: 04/12/2016, 08:57

... sniff(iface=interface,prn=monitorPackets) 1 2 3 4 Trang 5Arp Spoofing• ARP translates layer 3 to layer 2 addresses • Clients maintain their own ARP tables of these logical-to-physical bindings • But anyone ... Attack• Clients authenticate themselves to access points prior to association with the network • Authentication typically occurs over unencrypted layer 2 management frames • De-authentication also ... AttackdefmonitorPackets(p): if p.haslayer(BOOTP): global reqCnt global ofrCnt opCode = p.getlayer(BOOTP).op if opCode == 1: reqCnt=reqCnt+1 elif opCode == 2: ofrCnt=ofrCnt+1 print"[*]

Ngày tải lên: 12/09/2017, 01:26

... 15Collision & Broadcast DomainsNo of Broadcast domains= No of every active interface of the Routers No of collision domains = No of every active interface of the Switches & Routers Trang ... Ethernet – IP – ARP – DHCP Trang 4Functions of a LANTrang 5LAN SizesTrang 6LAN StandardsTrang 7Ethernet Frame StructureTrang 8Communicating Within the LANTrang 9MAC Address ComponentsTrang 10MAC ... v3.0—2-1Understanding Ethernet Trang 2Local Area NetworkTrang 3LAN Components• Computers – PCs – Servers • Interconnections – NICs – Media • Network devices – Hubs – Switches – Routers • Protocols – Ethernet

Ngày tải lên: 20/04/2018, 23:48

... arbitrary number of vectors—the size of the vector just increases to the sum of the sizes of all the vectors combined: No surprise here There is also the horzcat method that places the second vector ... Most of these construction mechanisms are through the apply method of the vector There are two different flavors of vector—breeze.linalg.DenseVector and breeze.linalg.SparseVector—the choice of the ... a matrix out of a Scala array too The constructor of the matrix accepts three arguments—the rows, the columns, and an array with values for the dimensions Note that the data from the array is

Ngày tải lên: 02/03/2019, 11:17

... score the sentiment for each of the reviews The number in the end of the output of the sentiment score shows that if the review has been positive or negative, the higher the number of the sentiment ... management He's the founder of Data Wranglers DC, a group dedicated to improving the craft of data wrangling, as well as a board member of Data Community DC He is currently the team leader of data operations ... the sentiment score— the better the review and the more negative the number of the sentiment score—the more negative the review has been We use the Spark Submit command with the following parameters:

Ngày tải lên: 04/03/2019, 13:21

... learning what a cat is, the first layer is an outline, the next layer is the shape of its eyes and nose, the next layer is a picture of a face, the next layers is the detail of a face, and so on ... patterns In addition, it needs to have the capability to process data The more data and types of patterns it handles, the more the amount of data and the number of calculations increases Hence, obviously, ... of open data from the Web Back then, it wasn't realistic to collect millions of pieces of data and then analyze and input that knowledge into a machine Actually, this work of databasing all the

Ngày tải lên: 04/03/2019, 14:14

... big data, certainly in the context of personal data, means that the marketing profession is in danger of reducing its remit, becoming a tactical rather than strategic part of the organization The ... the morass of data And in the midst of all this we cannot forget the experience of the consumer For it is the consumer that is producing this data but also then being the recipient of activities ... Dangers of reading data: the frailties of human judgement The pitfalls of storytelling Mixing up narrative and causality Is theory important? Concluding thoughts Notes 05 The power of prediction The

Ngày tải lên: 05/03/2019, 08:37

... the use of data analytics in political campaigns - in particular, whether there had been any misuse of personal data and, therefore, breaches of data protection law during the referendum At the ... providing copies of all the personal information the company held relating to him, along with an explanation as to the source of the data and its usage by the company The terms of the enforcement ... fine of £500,000 The scale of the penalty reflects the seriousness of the breaches and Facebook’s repeated failures to protect their user’s personal information, even after the misuse of data

Ngày tải lên: 15/03/2019, 13:39

... == "Chicago"; } ); The {} denote the body of the anonymous method; notice these fall within the scope of the () in the call to FindAll Thesignature of the anonymous methodin this case ... conceptually the same as that of relational databases, DataSets,and other objects The difference is that the structure of the XML document must be taken into account, e.g., in thiscase the document's ... is really the centerpiece of a wide range of data access technologiesfrom datasets to databases, text files to XMLdocuments, objects to object graphs The extensibility of LINQ is one of its most

Ngày tải lên: 26/03/2019, 11:35

... == "Chicago"; } ); The {} denote the body of the anonymous method; notice these fall within the scope of the () in the call to FindAll Thesignature of the anonymous methodin this case ... conceptually the same as that of relational databases, DataSets,and other objects The difference is that the structure of the XML document must be taken into account, e.g., in thiscase the document's ... is really the centerpiece of a wide range of data access technologiesfrom datasets to databases, text files to XMLdocuments, objects to object graphs The extensibility of LINQ is one of its most

Ngày tải lên: 19/04/2019, 10:10

... DHCP Functions of a LAN • Data and applications • Share resources • Provide communication path to other networks LAN Sizes LAN Standards Ethernet Frame Structure Communicating Within the LAN MAC ... Packet Delivery (10 of 22) Host-to-Host Packet Delivery (11 of 22) Host-to-Host Packet Delivery (12 of 22) Host-to-Host Packet Delivery (13 of 22) Host-to-Host Packet Delivery (14 of 22) Host-to-Host ... Packet Delivery (15 of 22) Host-to-Host Packet Delivery (16 of 22) Host-to-Host Packet Delivery (17 of 22) Host-to-Host Packet Delivery (18 of 22) Host-to-Host Packet Delivery (19 of 22) Host-to-Host

Ngày tải lên: 08/11/2019, 18:10

... consists of virtual connections between the nodes of a network independent of their physical layout. – These logical signal paths are defined by Data Link layer protocols. • The Data Link layer ... www.bkacad.com Overview Upon completion of this chapter, you will be able to: • Explain the role of Data Link layer protocols in data transmission. • Describe how the Data Link layer prepares data for transmission ... Upper Layer Services to the Media 11 • To support a wide variety of network functions, the Data Link layer is often divided into two sublayers: an upper sublayer and an lower sublayer. – The...

Ngày tải lên: 22/12/2013, 13:17