multiple access protocols in data link layer ppt

... Trang 41 Sequence wind ow edge Window wind ow edge tx 1 frame receive ACK0 max window size max window Trang 424 2Trang 43 Data Link Control Protocols  The data link control layer is concerned ... 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 ... channels over physical circuits) Trang 44 Data Link Protocol Application DTE DTE DTE: Data Terminal EquipmentDLP: Data Link Protocol DCE: Data Circuit Terminating Equipment : Communication Subsystem

Ngày tải lên: 04/12/2016, 08:57

... High-level Data Link Control: single link procedure  Link access procedure version B (LAPB): extension of LAPA, used in X.25 networks  Multilink procedure: extension of LAPB  Link access procedure ... 1 km link of 1 Mbps and a send window K = 2 A 10 km link of 200 Mbps and a send window K=7 A 50 000 km satellite link of 2 Mbps, a send window K =127  Solution? Trang 34Example of link utilization: ... synchronous  Service offered by data link: Trang 45Telecomm Dept. Faculty of EEE DCN HCMUT Data Link Protocol Application DTE DTE DTE: Data Terminal Equipment Trang 46Data Link Protocol ApplicationTrang

Ngày tải lên: 12/04/2023, 21:00

... the alert window that reads There is no primary key defined appears, click the button Access will insert an ID field—the Key field—in the table: 10 The key field When the alert window popped ... appears, type: Friends of Mine Data Input Form in the box Trang 158 Click the button The form should open and look like this: Trang 16Add a new record 1 In the form window, click the button ... Friends database window should now look like this: Trang 9Create forms 1 In the Objects list, click Forms 2 Double-click Create form by using wizard Trang 103 When the Form Wizard window appears,

Ngày tải lên: 14/08/2014, 09:21

... return to the Friends database window Trang 16DATABASE BASICS 574 On the Menu Bar, click File, then Exit to close Access Trang 18WORKING WITH TABLES 59Working with Tables In this section, you’ll ... for the database to download completely, then close the web browser Trang 21Open an existing database 1 Start Microsoft Access 2 In the Getting Started pane, click More Trang 22WORKING WITH ... to the database window Trang 6DATABASE BASICS 47Create reports 1 In the Objects list, click Reports 2 Double-click Create report by using wizard Trang 73 When the Report Wizard window

Ngày tải lên: 14/08/2014, 09:21

... 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 soát lỗi Trang 9Định khung và ... 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, modify, and delete slides (including this one) ... gọi là các liên kết (links)  các liên kết hữu tuyến  các liên kết vô tuyến  các mạng cục bộ ˆ đơn vị dữ liệu giao thức ở tầng 2 là frame , đóng gói/bao bọc gam dữ liệu “link” Tầng liên kết dữ

Ngày tải lên: 23/10/2014, 21:01

... CablingPin 4 Pin 4 Pin 5 Pin 5 Pin 6 Pin 2 Pin 7 Pin 7 Pin 8 Pin 8 Straight-through cable Crossover cable Trang 1710BASE-T Hubs The hub repeats the signal to all other devices Trang 18Reducing ... 3: Error Detection Most data-link protocols include a frame check sequence (FCS) or cyclical redundancy check (CRC) field in the data-link trailer This field contains a value that is the result ... network. Trang 42 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

Ngày tải lên: 12/08/2015, 09:13

... can be used to automate detecting layer two attacks • For more information, see “Detecting and Responding to Data Link Layer Attacks” published in SANS GCIA Reading Room ... Network Dilemma • About 1 year ago, sitting in a hotel room in Washington D.C. – “Free” Wireless Internet starts working intermittently – Users start complaining of Facebook posts they didn’t make ... 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 •

Ngày tải lên: 12/09/2017, 01:26

... 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 ... 27Sliding Window Protocol Using Go Back NContinued  Trang 28Sliding Window Protocol Using Go Back NContinued  Trang 29Sliding Window Protocol Using Go Back NTrang 30Sliding Window Protocol Using ... 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•

Ngày tải lên: 21/12/2017, 11:48

... 13CollisionsTrang 14Multiple Collision DomainsTrang 15Collision & Broadcast DomainsNo of Broadcast domains= No of every active interface of the Routers No of collision domains = No of every active interface ... StructureTrang 8Communicating Within the LANTrang 9MAC Address ComponentsTrang 10MAC AddressesTrang 11 Signals degrade with transmission distance.LAN Segment Limitations Trang 12Extending LAN SegmentsTrang ... v3.0—2-1Understanding Ethernet Trang 2Local Area NetworkTrang 3LAN Components• Computers – PCs – Servers • Interconnections – NICs – Media • Network devices – Hubs – Switches – Routers • Protocols –

Ngày tải lên: 20/04/2018, 23:48

... Understanding Ethernet BSCI v3.0—2-1 Local Area Network LAN Components • Computers – PCs – Servers • Interconnections – NICs – Media • Network devices – Hubs – Switches – Routers • Protocols ... 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 Address

Ngày tải lên: 08/11/2019, 18:10

... Models (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 ... 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)Relationship ... bit-oriented protocols. SinhVienZone.Com Trang 42High-Level Data Link Control (2)Trang 43The Data Link Layer in the InternetA home personal computer acting as an internet host. SinhVienZone.Com

Ngày tải lên: 30/01/2020, 23:02

... (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 protocols. Trang ... 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• ... 28Sliding Window Protocol Using Go Back NTrang 29Sliding Window Protocol Using Go Back NTrang 30Sliding Window Protocol Using Go Back N (2)Simulation of multiple timers in software. Trang 31A Sliding

Ngày tải lên: 14/12/2021, 07:14

... truyền thông: links  Kết nối có dây (wired links)  Kết nối không dây (wireless links)  LANs  Gói dữ liệu ở lớp 2: frame, đóng gói datagram Tầng data-link có nhiệm vụ truyền datagram từ 1 ... kết dữ liệu (Data Link layer) Computer Networking: A Top Down Approach 6 th edition Jim Kurose, Keith Ross Addison-Wesley March 2012 A note on the use of these ppt slides: We’re making these slides ... (còn gọi là network interface card NIC)  Ethernet card, 802.11 card; Ethernet chipset cpu memory host bus (e.g., PCI) network adapter card application transport network link link physical Trang

Ngày tải lên: 25/02/2023, 15:51

... Duplexing 264 6.3.2 TDD with Alternating Uplink and Downlink Slots 266 6.3.3 MD FRMA for TDD with a Single Switching-Point per 6.4.1 The Concept of Channel Access Functions 267 6.4.2 Downlink Signalling ... cover multiple access in GSM/GPRS and in UMTS, as well as latest trends in the industry towards the merging of wireless communications and based data communications, including their impact on multiple ... (sub-)layer We associate ‘basic multiple access schemes’ with the physical layer, and ‘multiple access protocols’ with the MAC (sub-)layer Unlike the few books dealing exclusively withmultiple access

Ngày tải lên: 20/04/2023, 09:32

... Network Acces Layer (Lớp truy nhập mạng) tơng ứng với physicallayer & Data link layer trong OSI + Internetwork layer: định tuyến gói dữ liệu giữa các máy chủ + Host to host layer: kết nối ... ITU (International Telecommunication Union - Hiệp hội viễnthông quốc tế) Physical layer: X21, X21 bis Data link layer: LAP-B Network layer: X25 - TCP/IP (Transmission Control Protocol/Internet ... mạng chuyển mạch gói(Packet Switched Network) Physical layer: X25.1 tớng ứng X21 bit Data link layer: X25.2 tơng ứng với LAP-B Network layer: X25.3 đặc tả giao diện DTE/DCE * Các chuẩn X3, X28

Ngày tải lên: 19/06/2023, 11:23

... to imperfect jamming signal cancellation. It worth noting that channel gain in S–R link in case that existence of jamming signal is different with case that main channel of S–R link reserved for ... on Physical Layer Security in Non‑Orthogonal Multiple Access Networks Dinh‑Thuan Do 1,2  · Minh‑Sang Van Nguyen 3 © Springer Science+Business Media, LLC, part of Springer Nature 2019 Abstract In this ... non-orthogonal multiple access (NOMA), these considered main categories are deployed to primarily pro-vide multiple access methodology In MA, it is introduced that signals distinguishing a explicit resource

Ngày tải lên: 22/11/2022, 14:09

... received or nothing to send Filler characterUrgent message from receiverHeader information beginsText begins Alerts receiver to incoming frameSender is pausing but not relinquishing the lineGood frame ... odd frame received Data transparency markerRequest for a responseSender terminatingEnd of transmission block; ACK requiredEnd of text in a message End of intermediate block in a multiblock transmissionBad ... Control frame: chỉ chứa các thông tin về điều khiển • Data frame: chứa các thông tin về dữ liệu, nhưng cũng có các thông tin điềukhiển dùng trong thông tin này e Data Frame: Hình 11.4 • Chiều mũi

Ngày tải lên: 08/08/2014, 10:20

... Meeting Participants 28 Trang 5Executive Summary Critical inadequacies in access to oral health care in the U.S., particularly in the low-income population, have been a focus of increasing concern ... Trang 1Filling an Urgent need: ImprovIng ChIldren’s ACCess to dentAl CAre In medICAId And sChIp JUlY 2008 Trang 2Filling an Urgent Need: Improving Children’s Access to Dental Care in Medicaid ... EPSDT would strengthen access for children in SCHIP Strong supports to assist families in identifying providers and in scheduling and getting to their children’s dental appointments can help lower

Ngày tải lên: 05/03/2014, 10:20

... the impact of inadequate access to land on economic development by investigating linkages to public and private investment in various sectors including construction and housing, industry and ... combine to maintain a high level of insecurity that limits investment in land The. .. Administration), including but not limited to development of wells, springs, and transmission lines, ... activity in Area C is limited primarily to low intensity agriculture. High intensity agricultural, industrial, housing, tourism, and other investments are hindered by the difficulty in obtaining

Ngày tải lên: 17/03/2014, 06:20

... DATA LINK CONTROL PROTOCOLS 2 Introduction  Data link control layer – often abbreviated simply to data link layer – is concerned with the transfer of data over a serial data link  The ... protocol  The data link layer is fundamental to the operation of all data communication applications 3 Introduction  Depending on the application, the user service provided by the data link layer ... delimiting 34 Bit-oriented Protocols – HDLC (High-level Data Link Control)  Network configuration  Point-to-point with single primary and secondary  Multipoint with single primary and multiple

Ngày tải lên: 30/03/2014, 07:20