... 5 .2 illustrates the relationship The obvious result is the increase in the data that needs to be transmitted 5.5 Advantages of theOSIReferenceModelThe major advantage of theOSIReferenceModel ... node B Figure 5 .1 The layers and message types of theOSIReferenceModel Network node C Primitives Primitives Presentation layer TheOSIReferenceModel 41 about the content of the received information ... substantial 5.6 The Seven Layers of theOSIReferenceModel 5.6 .1 Layer 1: The Physical Layer The Physical Layer is responsible for the actual transmission of the data and the provision of the necessary...
... kế , đồng thời dùng dịch vụ đc cung cấp lớp kế Phân lớp cho mô hình đc thực thi theo: • chức phụ thuộc mạng (lớp 1 ,2, 3), liên hệ mật thiết với giao thức liên quan đến mạng truyền số liệu • chức ... Mô hình OSI sở dành cho việc chuẩn hoá hệ thống truyền thông, nghiên cứu xây dựng ISO Mô hình dùng làm sở để kết nối hệ thống mở phục vụ cho ứng dụng phân tán Mô hình OSI chia giao thức ... Có loại ARQ bản: idle RQ (hoạt động theo chế độ bán song công, kiểm soát lỗi đc dùng với lược đồ truyền số liệu thiên hướng ký tự), continuous RQ (hoạt động theo chế độ song công, đc dùng chiến...
... mSDetAck mSDetConfirm openReq 10 openAck 11 endSession 12 . ReleaseComplet 10 10 11 11 12 Q.9 31 messages H .24 5 messages h×nh 6:Trao ®æi th«ng ®iÖp Q.9 31 Vµ H .24 5 gi÷a hai H. 323 Terminal ... a typical H. 323 Terminal Video I/O Equipment Audio I/O Equipment User Data Applications System Control User Interface Video codec H2 61, H263 Audio condec G 711 , G 722 , G 723 , G 728 G 729 recovery Path ... Gatekeeper – Call Across WAN May I call 21 11 with a bandwidth of 384K? Call flow H. 323 RAS signaling yes you can! IP WAN zone zone Admission Control Via Zone BandWidth in the Cisco IOS MCM Gatepeer H×nh4:...
... that the strangest and most unique things are very often connected not with the larger but with the smaller crimes, and occasionally, indeed, where there is room for doubt whether any positive ... guide myself by the thousands of other similar cases which occur to my memory In the present instance I am forced to admit that the facts are, to the best of my belief, unique." The portly client ... it, and the muscles are more developed." "Well, the snuff, then, and the Freemasonry?" "I won't insult your intelligence by telling you how I read that, especially as, rather against the strict...
... 2 List the seven layers of theOSImodel and the encapsulation unit used to describe the data grouping at each layer Also list the networking devices that operate ... Logical Grouping Devices or Components that Operate at this Layer 2- 2 CCNA 1: Networking Basics v 3.0 - Lab 2. 3.7 Copyright 20 03, Cisco Systems, Inc ...
... 2 List the seven layers of theOSImodel and the encapsulation unit used to describe the data grouping at each layer Also list the networking devices that operate ... Logical Grouping Devices or Components that Operate at this Layer 2- 2 CCNA 1: Networking Basics v 3.0 - Lab 2. 3.7 Copyright 20 03, Cisco Systems, Inc ...
... năm 19 42 chúng đạt đến số lợng cực đại 1. 800 cá thể; trờng hợp ốc bơu vàng phá hoại mùa màng trongnhững năm 19 96 -19 97 Việt Nam ví dụ ) 16 0 Thỏ rừng 14 0 12 0 10 0 Mèo rừng 80 60 40 20 18 45 18 55 18 65 ... 19 96 -19 97 Việt Nam ví dụ ) 16 0 Thỏ rừng 14 0 12 0 10 0 Mèo rừng 80 60 40 20 18 45 18 55 18 65 18 75 18 85 18 95 19 05 19 15 1 925 19 35 Hình Biến động số lợng thỏ rừng (Lepus americanus) linh miêu (Felis cannadensis) ... sinh thái C B A Tỷ lệ nhóm tuổi Quần thể chuột đồng Tháng tuổi Phát triển mạnh ổn định 20 16 12 20 40 60 10 15 Tỷ lệ nhóm tuổi Hình Tháp tuổi sinh thái Hình trên: Ba kiểu tháp sinh thái thể khác...
... this model This model allows all network elements to operate together, no matter who created the protocols and what computer vendor supports them The main benefits of theOSImodel include the ... of only the transport layer of theOSImodelThe TCP/IP process layer, when used with TCP, provides the functions of theOSImodel s presentation and application layers (6 and 7) When the TCP/IP ... standards for this layer Note: The Physical Layer of theOSImodel is only part of a LAN (Local Area Network) Layer – The Data Link Layer Layer of theOSImodel provides the following functions: •...
... flexibility between the two layers Media Access Control (MAC) Responsible for framing Builds frames from the1 s and 0’s that the Physical Layer picks up from the wire Transmits the raw bit stream ... packets from the source network to the destination network Responsible for physically passing data from one node to another • • • • Ensures hardware addressing of the device and delivery to the correct ... flow control to the layer Also carries a Frame Check Sequence to make sure the frame received is identical to the one transmitted Sub-layers: Logical Link Control (LLC) Runs between the Network Layer...
... Activity 2. 1: Reviewing the Process Exercise 1: Comparing the Process ! Compare your experience with the process presented in this section Identify a project with which you have been involved in the ... information to make an informed decision Reflect on the gathering, analyzing, and presenting process you used in the project Then discuss the answers to the following questions • Did you use a process ... • What were the stages of the process? • What was involved in each stage? • What were the advantages and disadvantages of the process? • How does the process you used compare to the one described...
... Delhi, IN Feb 11 , 20 13 - Feb 22 , 20 13 Live Event SANS Scottsdale 20 13 Scottsdale, AZUS Feb 17 , 20 13 - Feb 23 , 20 13 Live Event SANS Belgium 20 13 Brussels, BE Feb 18 , 20 13 - Feb 23 , 20 13 Live Event ... Monterey, CAUS Mar 22 , 20 13 - Mar 27 , 20 13 Live Event SANS Abu Dhabi 20 13 Abu Dhabi, AE Mar 23 , 20 13 - Mar 28 , 20 13 Live Event SANS Anaheim 20 13 OnlineCAUS Jan 09, 20 13 - Jan 14 , 20 13 Live Event SANS ... 04, 20 13 - Mar 09, 20 13 Live Event SANS 20 13 Orlando, FLUS Mar 08, 20 13 - Mar 15 , 20 13 Live Event SANS Secure Canberra 20 13 Canberra, AU Mar 18 , 20 13 - Mar 23 , 20 13 Live Event SANS Monterey 20 13 ...